GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations
Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity whe...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Osbaldo Sánchez-García [verfasserIn] Bernardo Cervantes Sodi [verfasserIn] Jacopo Fritz [verfasserIn] Alessia Moretti [verfasserIn] Bianca M. Poggianti [verfasserIn] Koshy George [verfasserIn] Marco Gullieuszik [verfasserIn] Benedetta Vulcani [verfasserIn] Giovanni Fasano [verfasserIn] Amira A. Tawfeek [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 - IOP Publishing, 2022, 945(2023), 2, p 99 |
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| Übergeordnetes Werk: |
volume:945 ; year:2023 ; number:2, p 99 |
| Links: |
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| DOI / URN: |
10.3847/1538-4357/acb269 |
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| Katalog-ID: |
DOAJ089161459 |
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| 520 | |a Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. | ||
| 650 | 4 | |a Barred spiral galaxies | |
| 650 | 4 | |a Ram pressure stripped tails | |
| 650 | 4 | |a Galaxy clusters | |
| 650 | 4 | |a Star formation | |
| 650 | 4 | |a Galaxy evolution | |
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| 700 | 0 | |a Giovanni Fasano |e verfasserin |4 aut | |
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10.3847/1538-4357/acb269 doi (DE-627)DOAJ089161459 (DE-599)DOAJb004e9e997244990a1c8d80fd3d2fbb2 DE-627 ger DE-627 rakwb eng QB460-466 Osbaldo Sánchez-García verfasserin aut GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. Barred spiral galaxies Ram pressure stripped tails Galaxy clusters Star formation Galaxy evolution Spiral galaxies Astrophysics Bernardo Cervantes Sodi verfasserin aut Jacopo Fritz verfasserin aut Alessia Moretti verfasserin aut Bianca M. Poggianti verfasserin aut Koshy George verfasserin aut Marco Gullieuszik verfasserin aut Benedetta Vulcani verfasserin aut Giovanni Fasano verfasserin aut Amira A. Tawfeek verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 99 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 99 https://doi.org/10.3847/1538-4357/acb269 kostenfrei https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 kostenfrei https://doi.org/10.3847/1538-4357/acb269 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 99 |
| spelling |
10.3847/1538-4357/acb269 doi (DE-627)DOAJ089161459 (DE-599)DOAJb004e9e997244990a1c8d80fd3d2fbb2 DE-627 ger DE-627 rakwb eng QB460-466 Osbaldo Sánchez-García verfasserin aut GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. Barred spiral galaxies Ram pressure stripped tails Galaxy clusters Star formation Galaxy evolution Spiral galaxies Astrophysics Bernardo Cervantes Sodi verfasserin aut Jacopo Fritz verfasserin aut Alessia Moretti verfasserin aut Bianca M. Poggianti verfasserin aut Koshy George verfasserin aut Marco Gullieuszik verfasserin aut Benedetta Vulcani verfasserin aut Giovanni Fasano verfasserin aut Amira A. Tawfeek verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 99 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 99 https://doi.org/10.3847/1538-4357/acb269 kostenfrei https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 kostenfrei https://doi.org/10.3847/1538-4357/acb269 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 99 |
| allfields_unstemmed |
10.3847/1538-4357/acb269 doi (DE-627)DOAJ089161459 (DE-599)DOAJb004e9e997244990a1c8d80fd3d2fbb2 DE-627 ger DE-627 rakwb eng QB460-466 Osbaldo Sánchez-García verfasserin aut GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. Barred spiral galaxies Ram pressure stripped tails Galaxy clusters Star formation Galaxy evolution Spiral galaxies Astrophysics Bernardo Cervantes Sodi verfasserin aut Jacopo Fritz verfasserin aut Alessia Moretti verfasserin aut Bianca M. Poggianti verfasserin aut Koshy George verfasserin aut Marco Gullieuszik verfasserin aut Benedetta Vulcani verfasserin aut Giovanni Fasano verfasserin aut Amira A. Tawfeek verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 99 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 99 https://doi.org/10.3847/1538-4357/acb269 kostenfrei https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 kostenfrei https://doi.org/10.3847/1538-4357/acb269 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 99 |
| allfieldsGer |
10.3847/1538-4357/acb269 doi (DE-627)DOAJ089161459 (DE-599)DOAJb004e9e997244990a1c8d80fd3d2fbb2 DE-627 ger DE-627 rakwb eng QB460-466 Osbaldo Sánchez-García verfasserin aut GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. Barred spiral galaxies Ram pressure stripped tails Galaxy clusters Star formation Galaxy evolution Spiral galaxies Astrophysics Bernardo Cervantes Sodi verfasserin aut Jacopo Fritz verfasserin aut Alessia Moretti verfasserin aut Bianca M. Poggianti verfasserin aut Koshy George verfasserin aut Marco Gullieuszik verfasserin aut Benedetta Vulcani verfasserin aut Giovanni Fasano verfasserin aut Amira A. Tawfeek verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 99 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 99 https://doi.org/10.3847/1538-4357/acb269 kostenfrei https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 kostenfrei https://doi.org/10.3847/1538-4357/acb269 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 99 |
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10.3847/1538-4357/acb269 doi (DE-627)DOAJ089161459 (DE-599)DOAJb004e9e997244990a1c8d80fd3d2fbb2 DE-627 ger DE-627 rakwb eng QB460-466 Osbaldo Sánchez-García verfasserin aut GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. Barred spiral galaxies Ram pressure stripped tails Galaxy clusters Star formation Galaxy evolution Spiral galaxies Astrophysics Bernardo Cervantes Sodi verfasserin aut Jacopo Fritz verfasserin aut Alessia Moretti verfasserin aut Bianca M. Poggianti verfasserin aut Koshy George verfasserin aut Marco Gullieuszik verfasserin aut Benedetta Vulcani verfasserin aut Giovanni Fasano verfasserin aut Amira A. Tawfeek verfasserin aut In The Astrophysical Journal IOP Publishing, 2022 945(2023), 2, p 99 (DE-627)269019219 (DE-600)1473835-1 15384357 nnns volume:945 year:2023 number:2, p 99 https://doi.org/10.3847/1538-4357/acb269 kostenfrei https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 kostenfrei https://doi.org/10.3847/1538-4357/acb269 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 99 |
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GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations |
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Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. |
| abstractGer |
Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. |
| abstract_unstemmed |
Stellar bars have been found to substantially influence the properties of stellar populations in galaxies, affecting their ability to form stars. While this can be easily seen when studying galaxies in relatively isolated environments, such type of analysis requires a higher degree of complexity when cluster galaxies are considered, due to the variety of interactions that can potentially occur in these denser environments. We use IFU MUSE data from the GASP survey to study the combined effect of the presence of a stellar bar and ram pressure, on spatially resolved properties of stellar populations. We have analyzed spatially resolved indicators of both recent star formation rates (SFRs) and average stellar population ages to check for signatures of anomalous central star formation activity, also taking into account the possible presence of nuclear activity. We found an increase in central SFR in ram-pressure-affected galaxies when compared with unperturbed ones. The most extreme cases of increased SFR and central rejuvenation occur in barred galaxies that are at advanced stages of ram pressure stripping. For low-mass barred galaxies affected by ram pressure, the combined effect is the systematic enhancement of the star formation activity as opposed to the case of high-mass galaxies, which present both enhancement and suppression. Barred galaxies that present suppression of their star formation activity also present signatures of nuclear activity. Our results indicate that the combined effect of the presence of a bar and strong perturbation by ram pressure is able to trigger the central star formation activity and probably ignite nuclear activity. |
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| container_issue |
2, p 99 |
| title_short |
GASP. XLV. Stellar Bars in Jellyfish Galaxies: Analysis of Ionized Gas and Stellar Populations |
| url |
https://doi.org/10.3847/1538-4357/acb269 https://doaj.org/article/b004e9e997244990a1c8d80fd3d2fbb2 https://doaj.org/toc/1538-4357 |
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| author2 |
Bernardo Cervantes Sodi Jacopo Fritz Alessia Moretti Bianca M. Poggianti Koshy George Marco Gullieuszik Benedetta Vulcani Giovanni Fasano Amira A. Tawfeek |
| author2Str |
Bernardo Cervantes Sodi Jacopo Fritz Alessia Moretti Bianca M. Poggianti Koshy George Marco Gullieuszik Benedetta Vulcani Giovanni Fasano Amira A. Tawfeek |
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QB - Astronomy |
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| doi_str |
10.3847/1538-4357/acb269 |
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| up_date |
2024-07-03T21:36:52.542Z |
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