ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations

Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestell...
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Autor*in:	Dipen Sahu [verfasserIn] Sheng-Yuan Liu [verfasserIn] Doug Johnstone [verfasserIn] Tie Liu [verfasserIn] Neal J. Evans II [verfasserIn] Naomi Hirano [verfasserIn] Ken’ichi Tatematsu [verfasserIn] James Di Francesco [verfasserIn] Chin-Fei Lee [verfasserIn] Kee-Tae Kim [verfasserIn] Somnath Dutta [verfasserIn] Shih-Ying Hsu [verfasserIn] Shanghuo Li [verfasserIn] Qiu-Yi Luo [verfasserIn] Patricio Sanhueza [verfasserIn] Hsien Shang [verfasserIn] Alessio Traficante [verfasserIn] Mika Juvela [verfasserIn] Chang Won Lee [verfasserIn] David J. Eden [verfasserIn] Paul F. Goldsmith [verfasserIn] Leonardo Bronfman [verfasserIn] Woojin Kwon [verfasserIn] Jeong-Eun Lee [verfasserIn] Yi-Jehng Kuan [verfasserIn] Isabelle Ristorcelli [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling

Übergeordnetes Werk:	In: The Astrophysical Journal - IOP Publishing, 2022, 945(2023), 2, p 156
Übergeordnetes Werk:	volume:945 ; year:2023 ; number:2, p 156

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-4357/acbc26

Katalog-ID:	DOAJ089151844

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245	1	0	\|a ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations
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520			\|a Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date.
650		4	\|a Molecular clouds
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700	0		\|a Isabelle Ristorcelli \|e verfasserin \|4 aut
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allfields	10.3847/1538-4357/acbc26 doi (DE-627)DOAJ089151844 (DE-599)DOAJ150c9253a8ab415ba7c9af8aaa815fc1 DE-627 ger DE-627 rakwb eng QB460-466 Dipen Sahu verfasserin aut ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date. Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics Sheng-Yuan Liu verfasserin aut Doug Johnstone verfasserin aut Tie Liu verfasserin aut Neal J. Evans II verfasserin aut Naomi Hirano verfasserin aut Ken’ichi Tatematsu verfasserin aut James Di Francesco verfasserin aut Chin-Fei Lee verfasserin aut Kee-Tae Kim verfasserin aut Somnath Dutta verfasserin aut Shih-Ying Hsu verfasserin aut Shanghuo Li verfasserin aut Qiu-Yi Luo verfasserin aut Patricio Sanhueza verfasserin aut Hsien Shang verfasserin aut Alessio Traficante verfasserin aut Mika Juvela verfasserin aut Chang Won Lee verfasserin aut David J. Eden verfasserin aut Paul F. Goldsmith verfasserin aut Leonardo Bronfman verfasserin aut Woojin Kwon verfasserin aut Jeong-Eun Lee verfasserin aut Yi-Jehng Kuan verfasserin aut Isabelle Ristorcelli verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 156 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 156 https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 kostenfrei https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 2, p 156
spelling	10.3847/1538-4357/acbc26 doi (DE-627)DOAJ089151844 (DE-599)DOAJ150c9253a8ab415ba7c9af8aaa815fc1 DE-627 ger DE-627 rakwb eng QB460-466 Dipen Sahu verfasserin aut ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date. Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics Sheng-Yuan Liu verfasserin aut Doug Johnstone verfasserin aut Tie Liu verfasserin aut Neal J. Evans II verfasserin aut Naomi Hirano verfasserin aut Ken’ichi Tatematsu verfasserin aut James Di Francesco verfasserin aut Chin-Fei Lee verfasserin aut Kee-Tae Kim verfasserin aut Somnath Dutta verfasserin aut Shih-Ying Hsu verfasserin aut Shanghuo Li verfasserin aut Qiu-Yi Luo verfasserin aut Patricio Sanhueza verfasserin aut Hsien Shang verfasserin aut Alessio Traficante verfasserin aut Mika Juvela verfasserin aut Chang Won Lee verfasserin aut David J. Eden verfasserin aut Paul F. Goldsmith verfasserin aut Leonardo Bronfman verfasserin aut Woojin Kwon verfasserin aut Jeong-Eun Lee verfasserin aut Yi-Jehng Kuan verfasserin aut Isabelle Ristorcelli verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 156 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 156 https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 kostenfrei https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 2, p 156
allfields_unstemmed	10.3847/1538-4357/acbc26 doi (DE-627)DOAJ089151844 (DE-599)DOAJ150c9253a8ab415ba7c9af8aaa815fc1 DE-627 ger DE-627 rakwb eng QB460-466 Dipen Sahu verfasserin aut ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date. Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics Sheng-Yuan Liu verfasserin aut Doug Johnstone verfasserin aut Tie Liu verfasserin aut Neal J. Evans II verfasserin aut Naomi Hirano verfasserin aut Ken’ichi Tatematsu verfasserin aut James Di Francesco verfasserin aut Chin-Fei Lee verfasserin aut Kee-Tae Kim verfasserin aut Somnath Dutta verfasserin aut Shih-Ying Hsu verfasserin aut Shanghuo Li verfasserin aut Qiu-Yi Luo verfasserin aut Patricio Sanhueza verfasserin aut Hsien Shang verfasserin aut Alessio Traficante verfasserin aut Mika Juvela verfasserin aut Chang Won Lee verfasserin aut David J. Eden verfasserin aut Paul F. Goldsmith verfasserin aut Leonardo Bronfman verfasserin aut Woojin Kwon verfasserin aut Jeong-Eun Lee verfasserin aut Yi-Jehng Kuan verfasserin aut Isabelle Ristorcelli verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 156 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 156 https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 kostenfrei https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 2, p 156
allfieldsGer	10.3847/1538-4357/acbc26 doi (DE-627)DOAJ089151844 (DE-599)DOAJ150c9253a8ab415ba7c9af8aaa815fc1 DE-627 ger DE-627 rakwb eng QB460-466 Dipen Sahu verfasserin aut ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date. Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics Sheng-Yuan Liu verfasserin aut Doug Johnstone verfasserin aut Tie Liu verfasserin aut Neal J. Evans II verfasserin aut Naomi Hirano verfasserin aut Ken’ichi Tatematsu verfasserin aut James Di Francesco verfasserin aut Chin-Fei Lee verfasserin aut Kee-Tae Kim verfasserin aut Somnath Dutta verfasserin aut Shih-Ying Hsu verfasserin aut Shanghuo Li verfasserin aut Qiu-Yi Luo verfasserin aut Patricio Sanhueza verfasserin aut Hsien Shang verfasserin aut Alessio Traficante verfasserin aut Mika Juvela verfasserin aut Chang Won Lee verfasserin aut David J. Eden verfasserin aut Paul F. Goldsmith verfasserin aut Leonardo Bronfman verfasserin aut Woojin Kwon verfasserin aut Jeong-Eun Lee verfasserin aut Yi-Jehng Kuan verfasserin aut Isabelle Ristorcelli verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 156 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 156 https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 kostenfrei https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 2, p 156
allfieldsSound	10.3847/1538-4357/acbc26 doi (DE-627)DOAJ089151844 (DE-599)DOAJ150c9253a8ab415ba7c9af8aaa815fc1 DE-627 ger DE-627 rakwb eng QB460-466 Dipen Sahu verfasserin aut ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date. Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics Sheng-Yuan Liu verfasserin aut Doug Johnstone verfasserin aut Tie Liu verfasserin aut Neal J. Evans II verfasserin aut Naomi Hirano verfasserin aut Ken’ichi Tatematsu verfasserin aut James Di Francesco verfasserin aut Chin-Fei Lee verfasserin aut Kee-Tae Kim verfasserin aut Somnath Dutta verfasserin aut Shih-Ying Hsu verfasserin aut Shanghuo Li verfasserin aut Qiu-Yi Luo verfasserin aut Patricio Sanhueza verfasserin aut Hsien Shang verfasserin aut Alessio Traficante verfasserin aut Mika Juvela verfasserin aut Chang Won Lee verfasserin aut David J. Eden verfasserin aut Paul F. Goldsmith verfasserin aut Leonardo Bronfman verfasserin aut Woojin Kwon verfasserin aut Jeong-Eun Lee verfasserin aut Yi-Jehng Kuan verfasserin aut Isabelle Ristorcelli verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 156 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 156 https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 kostenfrei https://doi.org/10.3847/1538-4357/acbc26 kostenfrei https://doaj.org/toc/1538-4357 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 945 2023 2, p 156
language	English
source	In The Astrophysical Journal 945(2023), 2, p 156 volume:945 year:2023 number:2, p 156
sourceStr	In The Astrophysical Journal 945(2023), 2, p 156 volume:945 year:2023 number:2, p 156
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling Astrophysics
isfreeaccess_bool	true
container_title	The Astrophysical Journal
authorswithroles_txt_mv	Dipen Sahu @@aut@@ Sheng-Yuan Liu @@aut@@ Doug Johnstone @@aut@@ Tie Liu @@aut@@ Neal J. Evans II @@aut@@ Naomi Hirano @@aut@@ Ken’ichi Tatematsu @@aut@@ James Di Francesco @@aut@@ Chin-Fei Lee @@aut@@ Kee-Tae Kim @@aut@@ Somnath Dutta @@aut@@ Shih-Ying Hsu @@aut@@ Shanghuo Li @@aut@@ Qiu-Yi Luo @@aut@@ Patricio Sanhueza @@aut@@ Hsien Shang @@aut@@ Alessio Traficante @@aut@@ Mika Juvela @@aut@@ Chang Won Lee @@aut@@ David J. Eden @@aut@@ Paul F. Goldsmith @@aut@@ Leonardo Bronfman @@aut@@ Woojin Kwon @@aut@@ Jeong-Eun Lee @@aut@@ Yi-Jehng Kuan @@aut@@ Isabelle Ristorcelli @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	269019219
id	DOAJ089151844
language_de	englisch
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callnumber-first	Q - Science
author	Dipen Sahu
spellingShingle	Dipen Sahu misc QB460-466 misc Molecular clouds misc Collapsing clouds misc Infrared dark clouds misc Star formation misc Astronomical methods misc Astronomy data modeling misc Astrophysics ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations
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topic_title	QB460-466 ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations Molecular clouds Collapsing clouds Infrared dark clouds Star formation Astronomical methods Astronomy data modeling
topic	misc QB460-466 misc Molecular clouds misc Collapsing clouds misc Infrared dark clouds misc Star formation misc Astronomical methods misc Astronomy data modeling misc Astrophysics
topic_unstemmed	misc QB460-466 misc Molecular clouds misc Collapsing clouds misc Infrared dark clouds misc Star formation misc Astronomical methods misc Astronomy data modeling misc Astrophysics
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title	ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations
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title_sort	alma survey of orion planck galactic cold clumps (almasop): density structure of centrally concentrated prestellar cores from multiscale observations
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title_auth	ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations
abstract	Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date.
abstractGer	Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date.
abstract_unstemmed	Starless cores represent the initial stage of evolution toward (proto)star formation, and a subset of them, known as prestellar cores, with high density (∼ 10 ^6 cm ^−3 or higher) and being centrally concentrated are expected to be embryos of (proto)stars. Determining the density profile of prestellar cores therefore provides an important opportunity to gauge the initial conditions of star formation. In this work, we perform rigorous modeling to estimate the density profiles of three nearly spherical prestellar cores among a sample of five highly dense cores detected by our recent observations. We employed multiscale observational data of the (sub)millimeter dust continuum emission, including those obtained by SCUBA-2 on the James Clerk Maxwell Telescope with a resolution of ∼ 5600 au and by multiple Atacama Large Millimeter/submillimeter Array observations with a resolution as high as ∼ 480 au. We are able to consistently reproduce the observed multiscale dust continuum images of the cores with a simple prescribed density profile, which bears an inner region of flat density and an r ^−2 profile toward the outer region. By utilizing the peak density and the size of the inner flat region as a proxy for the dynamical stage of the cores, we find that the three modeled cores are most likely unstable and prone to collapse. The sizes of the inner flat regions, as compact as ∼ 500 au, signify them as being the highly evolved prestellar cores rarely found to date.
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container_issue	2, p 156
title_short	ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations
url	https://doi.org/10.3847/1538-4357/acbc26 https://doaj.org/article/150c9253a8ab415ba7c9af8aaa815fc1 https://doaj.org/toc/1538-4357
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author2Str	Sheng-Yuan Liu Doug Johnstone Tie Liu Neal J. Evans II Naomi Hirano Ken’ichi Tatematsu James Di Francesco Chin-Fei Lee Kee-Tae Kim Somnath Dutta Shih-Ying Hsu Shanghuo Li Qiu-Yi Luo Patricio Sanhueza Hsien Shang Alessio Traficante Mika Juvela Chang Won Lee David J. Eden Paul F. Goldsmith Leonardo Bronfman Woojin Kwon Jeong-Eun Lee Yi-Jehng Kuan Isabelle Ristorcelli
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up_date	2024-07-03T21:33:06.055Z
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ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP): Density Structure of Centrally Concentrated Prestellar Cores from Multiscale Observations

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