Tracing back the birth environments of Type Ia supernova progenitor stars: a pilot study based on 44 early-type host galaxies
ABSTRACT The environmental dependence of Type Ia supernova (SN Ia) luminosities is well established, and efforts are being made to find its origin. Previous studies typically use the currently observed status of the host galaxy. However, given the delay time between the birth of the progenitor star...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2024-03, Vol.529 (4), p.3806-3814 |
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| container_title | Monthly notices of the Royal Astronomical Society |
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| creator | Kim, Young-Lo Galbany, Lluís Hook, Isobel Kang, Yijung |
| description | ABSTRACT
The environmental dependence of Type Ia supernova (SN Ia) luminosities is well established, and efforts are being made to find its origin. Previous studies typically use the currently observed status of the host galaxy. However, given the delay time between the birth of the progenitor star and the SN Ia explosion, the currently observed status may differ from the birth environment of the SN Ia progenitor star. In this paper, employing the chemical evolution and accurately determined stellar population properties of 44 early-type host galaxies, we, for the first time, estimate the SN Ia progenitor star birth environment, specifically [Fe/H]Birth and [α/Fe]Birth. We show that [α/Fe]Birth has a $30.4^{\text{+10.6}}_{-10.1}{{\ \rm per\ cent}}$ wider range than the currently observed [α/Fe]Current, while the range of [Fe/H]Birth is not statistically different ($17.9^{\text{+26.0}}_{-27.1}{{\ \rm per\ cent}}$) to that of [Fe/H]Current. The birth and current environments of [Fe/H] and [α/Fe] are sampled from different populations (p-values of the Kolmogorov–Smirnov test |
| doi_str_mv | 10.1093/mnras/stae809 |
| format | Article |
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The environmental dependence of Type Ia supernova (SN Ia) luminosities is well established, and efforts are being made to find its origin. Previous studies typically use the currently observed status of the host galaxy. However, given the delay time between the birth of the progenitor star and the SN Ia explosion, the currently observed status may differ from the birth environment of the SN Ia progenitor star. In this paper, employing the chemical evolution and accurately determined stellar population properties of 44 early-type host galaxies, we, for the first time, estimate the SN Ia progenitor star birth environment, specifically [Fe/H]Birth and [α/Fe]Birth. We show that [α/Fe]Birth has a $30.4^{\text{+10.6}}_{-10.1}{{\ \rm per\ cent}}$ wider range than the currently observed [α/Fe]Current, while the range of [Fe/H]Birth is not statistically different ($17.9^{\text{+26.0}}_{-27.1}{{\ \rm per\ cent}}$) to that of [Fe/H]Current. The birth and current environments of [Fe/H] and [α/Fe] are sampled from different populations (p-values of the Kolmogorov–Smirnov test <0.01). We find that light-curve fit parameters are insensitive to [Fe/H]Birth (<0.9σ for the non-zero slope), while a linear trend is observed with Hubble residuals (HRs) at the 2.4σ significance level. With [α/Fe]Birth, no linear trends (<1.1σ) are observed. Interestingly, we find that [α/Fe]Birth clearly splits the SN Ia sample into two groups: SN Ia exploded in [α/Fe]Birth-rich or [α/Fe]Birth-poor environments. SNe Ia exploded in different [α/Fe]Birth groups have different weighted-means of light-curve shape parameters: 0.81 ± 0.33 (2.5σ). They are thought to be drawn from different populations (p-value = 0.01). Regarding SN Ia colour and HRs, there is no difference (<1.0σ) in the weighted-means and distribution (p-value > 0.27) of each [α/Fe]Birth group.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stae809</identifier><language>eng</language><publisher>United States: Oxford University Press</publisher><subject>ASTRONOMY AND ASTROPHYSICS ; galaxies: fundamental parameters ; methods: data analysis ; supernovae: general</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2024-03, Vol.529 (4), p.3806-3814</ispartof><rights>2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. 2024</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c292t-3b08aa250d768b593fbc7d2996c09ddf0ceaf58ac02a5fcec61283460b7d2a0c3</cites><orcidid>0000-0002-1296-6887 ; 0000-0002-5261-5803 ; 0000-0002-1031-0796 ; 0000-0002-2960-978X ; 0000000210310796 ; 0000000212966887 ; 000000022960978X ; 0000000252615803</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,778,782,862,883,1601,27911,27912</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/2403626$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kim, Young-Lo</creatorcontrib><creatorcontrib>Galbany, Lluís</creatorcontrib><creatorcontrib>Hook, Isobel</creatorcontrib><creatorcontrib>Kang, Yijung</creatorcontrib><creatorcontrib>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</creatorcontrib><title>Tracing back the birth environments of Type Ia supernova progenitor stars: a pilot study based on 44 early-type host galaxies</title><title>Monthly notices of the Royal Astronomical Society</title><description>ABSTRACT
The environmental dependence of Type Ia supernova (SN Ia) luminosities is well established, and efforts are being made to find its origin. Previous studies typically use the currently observed status of the host galaxy. However, given the delay time between the birth of the progenitor star and the SN Ia explosion, the currently observed status may differ from the birth environment of the SN Ia progenitor star. In this paper, employing the chemical evolution and accurately determined stellar population properties of 44 early-type host galaxies, we, for the first time, estimate the SN Ia progenitor star birth environment, specifically [Fe/H]Birth and [α/Fe]Birth. We show that [α/Fe]Birth has a $30.4^{\text{+10.6}}_{-10.1}{{\ \rm per\ cent}}$ wider range than the currently observed [α/Fe]Current, while the range of [Fe/H]Birth is not statistically different ($17.9^{\text{+26.0}}_{-27.1}{{\ \rm per\ cent}}$) to that of [Fe/H]Current. The birth and current environments of [Fe/H] and [α/Fe] are sampled from different populations (p-values of the Kolmogorov–Smirnov test <0.01). We find that light-curve fit parameters are insensitive to [Fe/H]Birth (<0.9σ for the non-zero slope), while a linear trend is observed with Hubble residuals (HRs) at the 2.4σ significance level. With [α/Fe]Birth, no linear trends (<1.1σ) are observed. Interestingly, we find that [α/Fe]Birth clearly splits the SN Ia sample into two groups: SN Ia exploded in [α/Fe]Birth-rich or [α/Fe]Birth-poor environments. SNe Ia exploded in different [α/Fe]Birth groups have different weighted-means of light-curve shape parameters: 0.81 ± 0.33 (2.5σ). They are thought to be drawn from different populations (p-value = 0.01). Regarding SN Ia colour and HRs, there is no difference (<1.0σ) in the weighted-means and distribution (p-value > 0.27) of each [α/Fe]Birth group.</description><subject>ASTRONOMY AND ASTROPHYSICS</subject><subject>galaxies: fundamental parameters</subject><subject>methods: data analysis</subject><subject>supernovae: general</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>TOX</sourceid><recordid>eNqFkD1PwzAURS0EEqUwsltMLKEvduImbKjio1IlljJHL47TGFI7st2KDPx3XNqd6ek-HZ0rXUJuU3hIoeSzrXHoZz6gKqA8I5OUizxhpRDnZALA86SYp-klufL-EwAyzsSE_KwdSm02tEb5RUOnaK1d6Kgye-2s2SoTPLUtXY-DokukfjcoZ-we6eDsRhkdrKOx0vlHGn-6tyHGXTNGoVcNtYZmGVXo-jEJB0dnfaAb7PFbK39NLlrsvbo53Sn5eHleL96S1fvrcvG0SiQrWUh4DQUiy6GZi6LOS97Wct6wshQSyqZpQSps8wIlMMxbqaRIWcEzAXWkECSfkrujN5bryksdlOykNUbJULEMuGAiQskRks5671RbDU5v0Y1VCtVh4Opv4Oo0cOTvT9Ld8A_6C2OagQA</recordid><startdate>20240323</startdate><enddate>20240323</enddate><creator>Kim, Young-Lo</creator><creator>Galbany, Lluís</creator><creator>Hook, Isobel</creator><creator>Kang, Yijung</creator><general>Oxford University Press</general><scope>TOX</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-1296-6887</orcidid><orcidid>https://orcid.org/0000-0002-5261-5803</orcidid><orcidid>https://orcid.org/0000-0002-1031-0796</orcidid><orcidid>https://orcid.org/0000-0002-2960-978X</orcidid><orcidid>https://orcid.org/0000000210310796</orcidid><orcidid>https://orcid.org/0000000212966887</orcidid><orcidid>https://orcid.org/000000022960978X</orcidid><orcidid>https://orcid.org/0000000252615803</orcidid></search><sort><creationdate>20240323</creationdate><title>Tracing back the birth environments of Type Ia supernova progenitor stars: a pilot study based on 44 early-type host galaxies</title><author>Kim, Young-Lo ; Galbany, Lluís ; Hook, Isobel ; Kang, Yijung</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c292t-3b08aa250d768b593fbc7d2996c09ddf0ceaf58ac02a5fcec61283460b7d2a0c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>ASTRONOMY AND ASTROPHYSICS</topic><topic>galaxies: fundamental parameters</topic><topic>methods: data analysis</topic><topic>supernovae: general</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kim, Young-Lo</creatorcontrib><creatorcontrib>Galbany, Lluís</creatorcontrib><creatorcontrib>Hook, Isobel</creatorcontrib><creatorcontrib>Kang, Yijung</creatorcontrib><creatorcontrib>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</creatorcontrib><collection>Oxford Journals Open Access Collection</collection><collection>CrossRef</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kim, Young-Lo</au><au>Galbany, Lluís</au><au>Hook, Isobel</au><au>Kang, Yijung</au><aucorp>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tracing back the birth environments of Type Ia supernova progenitor stars: a pilot study based on 44 early-type host galaxies</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><date>2024-03-23</date><risdate>2024</risdate><volume>529</volume><issue>4</issue><spage>3806</spage><epage>3814</epage><pages>3806-3814</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>ABSTRACT
The environmental dependence of Type Ia supernova (SN Ia) luminosities is well established, and efforts are being made to find its origin. Previous studies typically use the currently observed status of the host galaxy. However, given the delay time between the birth of the progenitor star and the SN Ia explosion, the currently observed status may differ from the birth environment of the SN Ia progenitor star. In this paper, employing the chemical evolution and accurately determined stellar population properties of 44 early-type host galaxies, we, for the first time, estimate the SN Ia progenitor star birth environment, specifically [Fe/H]Birth and [α/Fe]Birth. We show that [α/Fe]Birth has a $30.4^{\text{+10.6}}_{-10.1}{{\ \rm per\ cent}}$ wider range than the currently observed [α/Fe]Current, while the range of [Fe/H]Birth is not statistically different ($17.9^{\text{+26.0}}_{-27.1}{{\ \rm per\ cent}}$) to that of [Fe/H]Current. The birth and current environments of [Fe/H] and [α/Fe] are sampled from different populations (p-values of the Kolmogorov–Smirnov test <0.01). We find that light-curve fit parameters are insensitive to [Fe/H]Birth (<0.9σ for the non-zero slope), while a linear trend is observed with Hubble residuals (HRs) at the 2.4σ significance level. With [α/Fe]Birth, no linear trends (<1.1σ) are observed. Interestingly, we find that [α/Fe]Birth clearly splits the SN Ia sample into two groups: SN Ia exploded in [α/Fe]Birth-rich or [α/Fe]Birth-poor environments. SNe Ia exploded in different [α/Fe]Birth groups have different weighted-means of light-curve shape parameters: 0.81 ± 0.33 (2.5σ). They are thought to be drawn from different populations (p-value = 0.01). Regarding SN Ia colour and HRs, there is no difference (<1.0σ) in the weighted-means and distribution (p-value > 0.27) of each [α/Fe]Birth group.</abstract><cop>United States</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/stae809</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-1296-6887</orcidid><orcidid>https://orcid.org/0000-0002-5261-5803</orcidid><orcidid>https://orcid.org/0000-0002-1031-0796</orcidid><orcidid>https://orcid.org/0000-0002-2960-978X</orcidid><orcidid>https://orcid.org/0000000210310796</orcidid><orcidid>https://orcid.org/0000000212966887</orcidid><orcidid>https://orcid.org/000000022960978X</orcidid><orcidid>https://orcid.org/0000000252615803</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | ASTRONOMY AND ASTROPHYSICS galaxies: fundamental parameters methods: data analysis supernovae: general |
| title | Tracing back the birth environments of Type Ia supernova progenitor stars: a pilot study based on 44 early-type host galaxies |
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