Probing the progenitors of Type Ia supernovae using circumstellar material interaction signatures
Journal Article
·
· Monthly Notices of the Royal Astronomical Society
- Univ. of Portsmouth (United Kingdom); Queen's Univ., Belfast, Northern Ireland (United Kingdom)
- Trinity College Dublin (Ireland)
- Stockholm Univ. (Sweden)
- Univ. Autonoma de Barcelona (Spain). Institute of Space Sciences (ICE, CSIC)
- Univ. of Southampton (United Kingdom)
- European Southern Observatory, Santiago (Chile); Millennium Institute of Astrophysics, Santiago (Chile)
- Queen's Univ., Belfast, Northern Ireland (United Kingdom)
This work aims to study different probes of Type Ia supernova (SN Ia) progenitors that have been suggested to be linked to the presence of circumstellar material (CSM). In particular, we have investigated, for the first time, the link between narrow blueshifted Nai D absorption profiles and the presence and strength of the broad high-velocity Caii near-infrared triplet absorption features seen in SNe Ia around maximum light. With the probes exploring different distances from the SN; Nai D > 1017 cm, high-velocity Caii features < 1015 cm. For this, we have used a new intermediate-resolution X-shooter spectral sample of 15 SNe Ia. We do not identify a link between these two probes, implying either that, one (or both) is not physically related to the presence of CSM or that the occurrence of CSM at the distance explored by one probe is not linked to its presence at the distance probed by the other. However, the previously identified statistical excess in the presence of blueshifted (over redshifted) Nai D absorption is confirmed in this sample at high significance and is found to be stronger in SNe Ia hosted by late-type galaxies. This excess is difficult to explain as being from an interstellar-medium origin as has been suggested by some recent modelling, as such an origin is not expected to show a bias for blueshifted absorption. However, a circumstellar origin for these features also appears unsatisfactory based on our new results, given the lack of link between the two probes of CSM investigated.
- Research Organization:
- US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)
- Sponsoring Organization:
- USDOE
- Contributing Organization:
- Sloan Digital Sky Survey (SDSS)
- OSTI ID:
- 1982512
- Journal Information:
- Monthly Notices of the Royal Astronomical Society, Journal Name: Monthly Notices of the Royal Astronomical Society Journal Issue: 3 Vol. 507; ISSN 0035-8711
- Publisher:
- Oxford University PressCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
LINKING TYPE Ia SUPERNOVA PROGENITORS AND THEIR RESULTING EXPLOSIONS
CIRCUMSTELLAR SHELLS IN ABSORPTION IN TYPE Ia SUPERNOVAE
TYPE Ia SUPERNOVAE STRONGLY INTERACTING WITH THEIR CIRCUMSTELLAR MEDIUM
Journal Article
·
Wed Jun 20 00:00:00 EDT 2012
· Astrophysical Journal
·
OSTI ID:22037031
CIRCUMSTELLAR SHELLS IN ABSORPTION IN TYPE Ia SUPERNOVAE
Journal Article
·
Fri Jul 10 00:00:00 EDT 2009
· Astrophysical Journal (Online)
·
OSTI ID:21313050
TYPE Ia SUPERNOVAE STRONGLY INTERACTING WITH THEIR CIRCUMSTELLAR MEDIUM
Journal Article
·
Mon Jul 01 00:00:00 EDT 2013
· Astrophysical Journal, Supplement Series
·
OSTI ID:22118722