An IR Search for Extinguished Supernovae in Starburst Galaxies
IR and Radio band observations of heavily extinguished regions in starburst galaxies suggest a very high SN rate associated with such regions. Optically measured supernova (SN) rates may therefore underestimate the total SN rate by factors of up to 10, due to the high extinction to SNe in starburst...
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ftdatacite:10.48550/arxiv.astro-ph/9812253 2023-05-15T17:53:39+02:00 An IR Search for Extinguished Supernovae in Starburst Galaxies Grossan, Bruce Spillar, Earl Tripp, Robert Pirzkal, Norbert Sutin, Brian M. Johnson, Paul 1998 https://dx.doi.org/10.48550/arxiv.astro-ph/9812253 https://arxiv.org/abs/astro-ph/9812253 unknown arXiv https://dx.doi.org/10.1086/300962 Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ Astrophysics astro-ph FOS Physical sciences article-journal Article ScholarlyArticle Text 1998 ftdatacite https://doi.org/10.48550/arxiv.astro-ph/9812253 https://doi.org/10.1086/300962 2022-04-01T17:15:16Z IR and Radio band observations of heavily extinguished regions in starburst galaxies suggest a very high SN rate associated with such regions. Optically measured supernova (SN) rates may therefore underestimate the total SN rate by factors of up to 10, due to the high extinction to SNe in starburst regions. The IR/radio SN rates come from a variety of indirect means, however, which suffer from model dependence and other problems. We describe a direct measurement of the SN rate from a regular patrol of starburst galaxies done with K' band imaging to minimize the effects of extinction. A collection of K' measurements of core-collapse SNe near maximum light is presented. Results of a preliminary SN search using the MIRC camera at the Wyoming IR Observatory (WIRO), and an improved search using the ORCA optics are described. A monthly patrol of starburst galaxies within 25 Mpc should yield 1.6 - 9.6 SNe/year. Our MIRC search with low-resolution (2.2" pixels) failed to find extinguished SNe, limiting the SN rate outside the nucleus (at > 15" radius) to less than 3.8 Supernova Rate Units (SRU or SNe/century/10^10 L(solar); 90% confidence). The MIRC camera had insufficient resolution to search nuclear starburst regions, where SN activity is concentrated, explaining why we found no heavily obscured SNe. We conclude that high-resolution, small field SN searches in starburst nuclei are more productive than low resolution, large-field searches, even for our large galaxies. With our ORCA high-resolution optics, we could limit the total SN rate to < 1.3 SRU at 90% confidence in 3 years of observations, lower than the most pessimistic estimate. : AJ Submitted 1998 Dec. 13. View figures and download all as one file at http://panisse.lbl.gov/public/bruce/irsn Text Orca DataCite Metadata Store (German National Library of Science and Technology) |
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Astrophysics astro-ph FOS Physical sciences |
spellingShingle |
Astrophysics astro-ph FOS Physical sciences Grossan, Bruce Spillar, Earl Tripp, Robert Pirzkal, Norbert Sutin, Brian M. Johnson, Paul An IR Search for Extinguished Supernovae in Starburst Galaxies |
topic_facet |
Astrophysics astro-ph FOS Physical sciences |
description |
IR and Radio band observations of heavily extinguished regions in starburst galaxies suggest a very high SN rate associated with such regions. Optically measured supernova (SN) rates may therefore underestimate the total SN rate by factors of up to 10, due to the high extinction to SNe in starburst regions. The IR/radio SN rates come from a variety of indirect means, however, which suffer from model dependence and other problems. We describe a direct measurement of the SN rate from a regular patrol of starburst galaxies done with K' band imaging to minimize the effects of extinction. A collection of K' measurements of core-collapse SNe near maximum light is presented. Results of a preliminary SN search using the MIRC camera at the Wyoming IR Observatory (WIRO), and an improved search using the ORCA optics are described. A monthly patrol of starburst galaxies within 25 Mpc should yield 1.6 - 9.6 SNe/year. Our MIRC search with low-resolution (2.2" pixels) failed to find extinguished SNe, limiting the SN rate outside the nucleus (at > 15" radius) to less than 3.8 Supernova Rate Units (SRU or SNe/century/10^10 L(solar); 90% confidence). The MIRC camera had insufficient resolution to search nuclear starburst regions, where SN activity is concentrated, explaining why we found no heavily obscured SNe. We conclude that high-resolution, small field SN searches in starburst nuclei are more productive than low resolution, large-field searches, even for our large galaxies. With our ORCA high-resolution optics, we could limit the total SN rate to < 1.3 SRU at 90% confidence in 3 years of observations, lower than the most pessimistic estimate. : AJ Submitted 1998 Dec. 13. View figures and download all as one file at http://panisse.lbl.gov/public/bruce/irsn |
format |
Text |
author |
Grossan, Bruce Spillar, Earl Tripp, Robert Pirzkal, Norbert Sutin, Brian M. Johnson, Paul |
author_facet |
Grossan, Bruce Spillar, Earl Tripp, Robert Pirzkal, Norbert Sutin, Brian M. Johnson, Paul |
author_sort |
Grossan, Bruce |
title |
An IR Search for Extinguished Supernovae in Starburst Galaxies |
title_short |
An IR Search for Extinguished Supernovae in Starburst Galaxies |
title_full |
An IR Search for Extinguished Supernovae in Starburst Galaxies |
title_fullStr |
An IR Search for Extinguished Supernovae in Starburst Galaxies |
title_full_unstemmed |
An IR Search for Extinguished Supernovae in Starburst Galaxies |
title_sort |
ir search for extinguished supernovae in starburst galaxies |
publisher |
arXiv |
publishDate |
1998 |
url |
https://dx.doi.org/10.48550/arxiv.astro-ph/9812253 https://arxiv.org/abs/astro-ph/9812253 |
genre |
Orca |
genre_facet |
Orca |
op_relation |
https://dx.doi.org/10.1086/300962 |
op_rights |
Assumed arXiv.org perpetual, non-exclusive license to distribute this article for submissions made before January 2004 http://arxiv.org/licenses/assumed-1991-2003/ |
op_doi |
https://doi.org/10.48550/arxiv.astro-ph/9812253 https://doi.org/10.1086/300962 |
_version_ |
1766161356747177984 |