PMO OpenIR
Average Spectral Properties of Type Ia Supernova Host Galaxies
Uddin, Syed A.1,2; Mould, Jeremy2,3; Wang, Lifan1,4
2017-12-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume850Issue:2Pages:6
Corresponding AuthorUddin, Syed A.(saushuvo@gmail.com)
AbstractWe construct the average spectra of host galaxies of slower, faster, bluer, and redder Type Ia supernovae (SNe Ia) from the SDSS-II supernova survey. The average spectrum of slower declining (broader light curve width or higher stretch) SN Ia hosts shows stronger emission lines compared to the average spectrum of faster declining (narrower light curve width or lower stretch) SN Ia hosts. Using pPXF, we find that hosts of slower declining SNe Ia have metallicities that are, on average, 0.24 dex lower than average metallicities of faster declining SN Ia hosts. Similarly, redder SN Ia hosts have slightly higher metallicities than bluer SN Ia hosts. Lick index analysis of metallic lines and Balmer lines shows that faster declining SN Ia hosts have relatively higher metal content and have relatively older stellar populations compared with slower declining SN Ia hosts. We calculate average Ha star formation rate (SFR), stellar mass, and the specific SFR (sSFR) of host galaxies in these subgroups of SNe Ia. We find that slower declining SN Ia hosts have significantly higher (> 5 sigma) sSFR than faster declining SN Ia hosts. A Kolmogorov-Smirnov test shows that these two types of hosts originate from different parent distributions. Our results, when compared with the models of Childress et al., indicate that slower declining SNe Ia, being hosted in actively star-forming galaxies, are young (prompt) SNe Ia, originating from similar progenitor age groups.
Keywordgalaxies: general supernovae: general techniques: spectroscopic
DOI10.3847/1538-4357/aa93e9
WOS KeywordCOSMOLOGICAL PARAMETERS ; ACCELERATING UNIVERSE ; DARK ENERGY ; AGES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000425471400004
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22323
Collection中国科学院紫金山天文台
Corresponding AuthorUddin, Syed A.
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing, Jiangsu, Peoples R China
2.ARC, Ctr Excellence All Sky Astrophys CAASTRO, Canberra, ACT, Australia
3.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Melbourne, Vic, Australia
4.Texas A&M Univ, Dept Phys & Astron, College Stn, TX USA
Recommended Citation
GB/T 7714
Uddin, Syed A.,Mould, Jeremy,Wang, Lifan. Average Spectral Properties of Type Ia Supernova Host Galaxies[J]. ASTROPHYSICAL JOURNAL,2017,850(2):6.
APA Uddin, Syed A.,Mould, Jeremy,&Wang, Lifan.(2017).Average Spectral Properties of Type Ia Supernova Host Galaxies.ASTROPHYSICAL JOURNAL,850(2),6.
MLA Uddin, Syed A.,et al."Average Spectral Properties of Type Ia Supernova Host Galaxies".ASTROPHYSICAL JOURNAL 850.2(2017):6.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Uddin, Syed A.]'s Articles
[Mould, Jeremy]'s Articles
[Wang, Lifan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Uddin, Syed A.]'s Articles
[Mould, Jeremy]'s Articles
[Wang, Lifan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Uddin, Syed A.]'s Articles
[Mould, Jeremy]'s Articles
[Wang, Lifan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.