JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST
With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial res...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Erica J. Nelson [verfasserIn] Katherine A. Suess [verfasserIn] Rachel Bezanson [verfasserIn] Sedona H. Price [verfasserIn] Pieter van Dokkum [verfasserIn] Joel Leja [verfasserIn] Bingjie Wang [verfasserIn] Katherine E. Whitaker [verfasserIn] Ivo Labbé [verfasserIn] Laia Barrufet [verfasserIn] Gabriel Brammer [verfasserIn] Daniel J. Eisenstein [verfasserIn] Justus Gibson [verfasserIn] Abigail I. Hartley [verfasserIn] Benjamin D. Johnson [verfasserIn] Kasper E. Heintz [verfasserIn] Elijah Mathews [verfasserIn] Tim B. Miller [verfasserIn] Pascal A. Oesch [verfasserIn] Lester Sandles [verfasserIn] David J. Setton [verfasserIn] Joshua S. Speagle [verfasserIn] Sandro Tacchella [verfasserIn] Ken-ichi Tadaki [verfasserIn] Hannah Übler [verfasserIn] John. R. Weaver [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2023 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
In: The Astrophysical Journal Letters - IOP Publishing, 2022, 948(2023), 2, p L18 |
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| Übergeordnetes Werk: |
volume:948 ; year:2023 ; number:2, p L18 |
| Links: |
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| DOI / URN: |
10.3847/2041-8213/acc1e1 |
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| Katalog-ID: |
DOAJ090393139 |
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| 245 | 1 | 0 | |a JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST |
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| 520 | |a With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μ m < 24.5 mag) and very faint or even invisible with HST (<1.6 μ m). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M _⋆ ≳ 10 ^10 M _⊙ , and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μ m, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R _e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts. | ||
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| 700 | 0 | |a Rachel Bezanson |e verfasserin |4 aut | |
| 700 | 0 | |a Sedona H. Price |e verfasserin |4 aut | |
| 700 | 0 | |a Pieter van Dokkum |e verfasserin |4 aut | |
| 700 | 0 | |a Joel Leja |e verfasserin |4 aut | |
| 700 | 0 | |a Bingjie Wang |e verfasserin |4 aut | |
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| 700 | 0 | |a Daniel J. Eisenstein |e verfasserin |4 aut | |
| 700 | 0 | |a Justus Gibson |e verfasserin |4 aut | |
| 700 | 0 | |a Abigail I. Hartley |e verfasserin |4 aut | |
| 700 | 0 | |a Benjamin D. Johnson |e verfasserin |4 aut | |
| 700 | 0 | |a Kasper E. Heintz |e verfasserin |4 aut | |
| 700 | 0 | |a Elijah Mathews |e verfasserin |4 aut | |
| 700 | 0 | |a Tim B. Miller |e verfasserin |4 aut | |
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| 700 | 0 | |a Ken-ichi Tadaki |e verfasserin |4 aut | |
| 700 | 0 | |a Hannah Übler |e verfasserin |4 aut | |
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10.3847/2041-8213/acc1e1 doi (DE-627)DOAJ090393139 (DE-599)DOAJf79627debdfb47a4be8d77a553ee68f0 DE-627 ger DE-627 rakwb eng QB460-466 Erica J. Nelson verfasserin aut JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μ m < 24.5 mag) and very faint or even invisible with HST (<1.6 μ m). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M _⋆ ≳ 10 ^10 M _⊙ , and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μ m, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R _e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts. Galaxy evolution Galaxy structure Galaxy formation Astrophysics Katherine A. Suess verfasserin aut Rachel Bezanson verfasserin aut Sedona H. Price verfasserin aut Pieter van Dokkum verfasserin aut Joel Leja verfasserin aut Bingjie Wang verfasserin aut Katherine E. Whitaker verfasserin aut Ivo Labbé verfasserin aut Laia Barrufet verfasserin aut Gabriel Brammer verfasserin aut Daniel J. Eisenstein verfasserin aut Justus Gibson verfasserin aut Abigail I. Hartley verfasserin aut Benjamin D. Johnson verfasserin aut Kasper E. Heintz verfasserin aut Elijah Mathews verfasserin aut Tim B. Miller verfasserin aut Pascal A. Oesch verfasserin aut Lester Sandles verfasserin aut David J. Setton verfasserin aut Joshua S. Speagle verfasserin aut Sandro Tacchella verfasserin aut Ken-ichi Tadaki verfasserin aut Hannah Übler verfasserin aut John. R. Weaver verfasserin aut In The Astrophysical Journal Letters IOP Publishing, 2022 948(2023), 2, p L18 (DE-627)312189028 (DE-600)2006858-X 20418213 nnns volume:948 year:2023 number:2, p L18 https://doi.org/10.3847/2041-8213/acc1e1 kostenfrei https://doaj.org/article/f79627debdfb47a4be8d77a553ee68f0 kostenfrei https://doi.org/10.3847/2041-8213/acc1e1 kostenfrei https://doaj.org/toc/2041-8205 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_213 GBV_ILN_230 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 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 948 2023 2, p L18 |
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Erica J. Nelson @@aut@@ Katherine A. Suess @@aut@@ Rachel Bezanson @@aut@@ Sedona H. Price @@aut@@ Pieter van Dokkum @@aut@@ Joel Leja @@aut@@ Bingjie Wang @@aut@@ Katherine E. Whitaker @@aut@@ Ivo Labbé @@aut@@ Laia Barrufet @@aut@@ Gabriel Brammer @@aut@@ Daniel J. Eisenstein @@aut@@ Justus Gibson @@aut@@ Abigail I. Hartley @@aut@@ Benjamin D. Johnson @@aut@@ Kasper E. Heintz @@aut@@ Elijah Mathews @@aut@@ Tim B. Miller @@aut@@ Pascal A. Oesch @@aut@@ Lester Sandles @@aut@@ David J. Setton @@aut@@ Joshua S. Speagle @@aut@@ Sandro Tacchella @@aut@@ Ken-ichi Tadaki @@aut@@ Hannah Übler @@aut@@ John. R. Weaver @@aut@@ |
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jwst reveals a population of ultrared, flattened galaxies at 2 ≲ z ≲ 6 previously missed by hst |
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JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST |
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With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μ m < 24.5 mag) and very faint or even invisible with HST (<1.6 μ m). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M _⋆ ≳ 10 ^10 M _⊙ , and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μ m, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R _e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts. |
| abstractGer |
With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μ m < 24.5 mag) and very faint or even invisible with HST (<1.6 μ m). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M _⋆ ≳ 10 ^10 M _⊙ , and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μ m, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R _e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts. |
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With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies. Although “HST-dark” galaxies have previously been detected at long wavelengths, these observations generally suffer from a lack of spatial resolution, which limits our ability to characterize their sizes and morphologies. Here we report on a first view of starlight from a subset of the HST-dark population that is bright with JWST/NIRCam (4.4 μ m < 24.5 mag) and very faint or even invisible with HST (<1.6 μ m). In this Letter we focus on a dramatic and unanticipated population of physically extended galaxies (≳0.″25). These 12 galaxies have photometric redshifts 2 < z < 6, high stellar masses M _⋆ ≳ 10 ^10 M _⊙ , and significant dust-attenuated star formation. Surprisingly, the galaxies have elongated projected axis ratios at 4.4 μ m, suggesting that the population is disk dominated or prolate and we hence refer to them as ultrared flattened objects. Most of the galaxies appear red at all radii, suggesting significant dust attenuation throughout. With R _e (F444W) ∼ 1–2 kpc, the galaxies are similar in size to compact massive galaxies at z ∼ 2 and the cores of massive galaxies and S0s at z ∼ 0. The stellar masses, sizes, and morphologies of the sample suggest that some could be progenitors of lenticular or fast-rotating galaxies in the local universe. The existence of this population suggests that our previous censuses of the universe may have missed massive, dusty edge-on disks, in addition to dust-obscured starbursts. |
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JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST |
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