H-alpha emission and HII regions at the locations of recent supernovae in nearby galaxies
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
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2024
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| author | Chen, Ness Mayker Leroy, Adam K. Sarbadhicary, Sumit K. Lopez, Laura A. Thompson, Todd A. Barnes, Ashley T. Emsellem, Eric Groves, Brent Chandar, Rupali Chevance, Mélanie Chown, Ryan Dale, Daniel A. Egorov, Oleg V. Glover, Simon C. O. Grasha, Kathryn Klessen, Ralf S. Kreckel, Kathryn Li, Jing Méndez-Delgado, J. Eduardo Murphy, Eric J. Pathak, Debosmita Schinnerer, Eva Thilker, David A. Úbeda, Leonardo Williams, Thomas G. |
| author_facet | Chen, Ness Mayker Leroy, Adam K. Sarbadhicary, Sumit K. Lopez, Laura A. Thompson, Todd A. Barnes, Ashley T. Emsellem, Eric Groves, Brent Chandar, Rupali Chevance, Mélanie Chown, Ryan Dale, Daniel A. Egorov, Oleg V. Glover, Simon C. O. Grasha, Kathryn Klessen, Ralf S. Kreckel, Kathryn Li, Jing Méndez-Delgado, J. Eduardo Murphy, Eric J. Pathak, Debosmita Schinnerer, Eva Thilker, David A. Úbeda, Leonardo Williams, Thomas G. |
| contents | We present a statistical analysis of the local, approximately 50-100 pc scale, H-alpha emission at the locations of recent (less than 125 years) supernovae (SNe) in nearby star-forming galaxies. Our sample consists of 32 SNe in 10 galaxies that are targets of the PHANGS-MUSE survey. We find that 41% (13/32) of these SNe occur coincident with a previously identified HII region. For comparison, HII regions cover 32% of the area within 1 kpc of any recent SN. Contrasting this local covering fraction with the fraction of SNe coincident with HII regions, we find a statistical excess of 7.6% +/- 8.7% of all SNe to be associated with HII regions. This increases to an excess of 19.2% +/- 10.4% when considering only core-collapse SNe. These estimates appear to be in good agreement with qualitative results from new, higher resolution HST H-alpha imaging, which also suggest many CCSNe detonate near but not in HII regions. Our results appear consistent with the expectation that only a modest fraction of stars explode during the first 5 Myr of the life of a stellar population, when H-alpha emission is expected to be bright. Of the HII region associated SNe, 8% (11/13) also have associated detected CO(2-1) emission, indicating the presence of molecular gas. The HII region associated SNe have typical Av extinctions approximately equal to 1 mag, consistent with a significant amount of pre-clearing of gas from the region before the SNe explode. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_10762 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | H-alpha emission and HII regions at the locations of recent supernovae in nearby galaxies Chen, Ness Mayker Leroy, Adam K. Sarbadhicary, Sumit K. Lopez, Laura A. Thompson, Todd A. Barnes, Ashley T. Emsellem, Eric Groves, Brent Chandar, Rupali Chevance, Mélanie Chown, Ryan Dale, Daniel A. Egorov, Oleg V. Glover, Simon C. O. Grasha, Kathryn Klessen, Ralf S. Kreckel, Kathryn Li, Jing Méndez-Delgado, J. Eduardo Murphy, Eric J. Pathak, Debosmita Schinnerer, Eva Thilker, David A. Úbeda, Leonardo Williams, Thomas G. Astrophysics of Galaxies We present a statistical analysis of the local, approximately 50-100 pc scale, H-alpha emission at the locations of recent (less than 125 years) supernovae (SNe) in nearby star-forming galaxies. Our sample consists of 32 SNe in 10 galaxies that are targets of the PHANGS-MUSE survey. We find that 41% (13/32) of these SNe occur coincident with a previously identified HII region. For comparison, HII regions cover 32% of the area within 1 kpc of any recent SN. Contrasting this local covering fraction with the fraction of SNe coincident with HII regions, we find a statistical excess of 7.6% +/- 8.7% of all SNe to be associated with HII regions. This increases to an excess of 19.2% +/- 10.4% when considering only core-collapse SNe. These estimates appear to be in good agreement with qualitative results from new, higher resolution HST H-alpha imaging, which also suggest many CCSNe detonate near but not in HII regions. Our results appear consistent with the expectation that only a modest fraction of stars explode during the first 5 Myr of the life of a stellar population, when H-alpha emission is expected to be bright. Of the HII region associated SNe, 8% (11/13) also have associated detected CO(2-1) emission, indicating the presence of molecular gas. The HII region associated SNe have typical Av extinctions approximately equal to 1 mag, consistent with a significant amount of pre-clearing of gas from the region before the SNe explode. |
| title | H-alpha emission and HII regions at the locations of recent supernovae in nearby galaxies |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2404.10762 |