The University of Southampton
University of Southampton Institutional Repository

A statistical analysis of circumstellar material in Type Ia supernovae

A statistical analysis of circumstellar material in Type Ia supernovae
A statistical analysis of circumstellar material in Type Ia supernovae
A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na?i D absorption lines, interpreted as evidence of circumstellar material surrounding the progenitor system. The origin of this material is controversial, but the simplest explanation is that it results from previous mass-loss in a system containing a white dwarf and a non-degenerate companion star. We present new single-epoch intermediate-resolution spectra of 17 low-redshift SNe Ia taken with XShooter on the European Southern Observatory Very Large Telescope. Combining this sample with events from the literature, we confirm an excess (?20 per?cent) of SNe Ia displaying blueshifted narrow Na?i D absorption features compared to redshifted Na?i D features. The host galaxies of SNe Ia displaying blueshifted absorption profiles are skewed towards later-type galaxies, compared to SNe Ia that show no Na?i D absorption and SNe Ia displaying blueshifted narrow Na?i D absorption features have broader light curves. The strength of the Na?i D absorption is stronger in SNe Ia displaying blueshifted Na?i D absorption features than those without blueshifted features, and the strength of the blueshifted Na?i D is correlated with the B ? V colour of the SN at maximum light. This strongly suggests the absorbing material is local to the SN. In the context of the progenitor systems of SNe Ia, we discuss the significance of these findings and other recent observational evidence on the nature of SN Ia progenitors. We present a summary that suggests that there are at least two distinct populations of normal, cosmologically useful SNe Ia.
circumstellar matter, supernovae: general, distance scale
0035-8711
222-240
Maguire, K.
94dfab90-b220-454f-8d2a-4ab4ffe27c65
Sullivan, M.
2f31f9fa-8e79-4b35-98e2-0cb38f503850
Patat, F.
b0cd4f57-b9be-49d8-a5fc-89c869289505
Gal-Yam, A.
21353e10-c914-495b-a841-b9b79b9b7954
Hook, I. M.
df20607e-0685-4faa-b7fc-973627dd44cc
Dhawan, S.
8d4c83eb-2488-4cfe-96b3-f8314d64f6d8
Howell, D. A.
cef584ef-f8d1-4064-9b3b-25b20c40c0bd
Mazzali, P.
00e826f0-3a40-4e77-a6e7-c0a0877eae58
Nugent, P. E.
4559da92-6f56-4810-9c9e-314d139ab34a
Pan, Y.- C.
378f40fb-d382-4ec4-aabf-ea5559a2d6da
Podsiadlowski, P.
750c4f4f-5ec3-461f-9428-91f708a5caeb
Simon, J. D.
e3ded264-e80b-495b-af4b-a0e13ba9ed38
Sternberg, A.
0a179884-7518-485f-9fab-4b0168c94f75
Valenti, S.
3a324949-946e-4b07-83ea-ba19d11bb91a
Baltay, C.
aff33e27-54b4-4da7-9785-30e2fae20ae7
Bersier, D.
cf80f4d0-e01a-4885-9aab-4d5784170a3d
Blagorodnova, N.
8e517266-3055-4e02-a321-765c986d4846
Chen, T.- W.
9522cdd3-7a2e-41b2-a8e6-aa730fffd916
Ellman, N.
61a49739-3d44-44f6-bfe8-9e059005ee14
Feindt, U.
bfceacc8-3a6b-479d-ba2e-c5e387882249
Forster, F.
c0d37dd1-287e-4061-9889-98285c202067
Fraser, M.
525afe70-c2ed-49e4-b46d-3fe44dd2de68
Gonzalez-Gaitan, S.
57a49592-3b1f-4492-bc30-0ef0156023ec
Graham, M. L.
696ef8dd-8fb7-42ed-a4be-c2c1a2b74d06
Gutierrez, C.
f66ec260-76db-4284-b81a-7de3a3bea3c8
Hachinger, S.
049d43d7-bc8d-41b0-b259-29211cada631
Hadjiyska, E.
c59aad70-e6b4-404a-a06e-b01a7cd79aa9
Inserra, C.
4bb3e0c1-6854-4b60-b6b0-0ce0457dc3ca
Knapic, C.
3cc3956a-788a-46ff-a7e5-e30a4bebfa56
Laher, R. R.
4489e67f-8929-44f1-af59-c2f150f799b8
Leloudas, G.
918d1465-2267-434e-85c1-c6432aaabce4
Margheim, S.
67bedf62-0399-45fa-9b77-5842bdd97d57
McKinnon, R.
f400b74c-2f9f-4aeb-b081-2358052705b6
Molinaro, M.
11ad3080-65b5-48d7-af39-1d697575b7b0
Morrell, N.
c04ca685-6c6c-49eb-86fe-3f9b16230515
Ofek, E. O.
85a83718-89bf-46d7-84b7-e33dcea29a25
Rabinowitz, D.
962bd985-534b-414f-91f1-df575d59ff13
Rest, A.
46703e55-0c80-41d1-aeff-27269f39ddc3
Sand, D.
4d31236c-c862-4f36-95fd-b9c271d77275
Smareglia, R.
e2c643ab-dee4-4102-bc7f-c8aee8ecb4b3
Smartt, S. J.
feb44ff4-12b4-4352-9af5-5e21d95d2aea
Taddia, F.
7003cdfc-f170-49b7-9776-87f701a17e0b
Walker, E. S.
3da7af85-b2a1-4bd2-a1c2-25eacf956545
Walton, N. A.
9844e05e-7f43-4e34-aed9-cf801ddf98c8
Young, D. R.
4d63f819-76d7-4c6e-b45a-6ee86bb95e5d
Maguire, K.
94dfab90-b220-454f-8d2a-4ab4ffe27c65
Sullivan, M.
2f31f9fa-8e79-4b35-98e2-0cb38f503850
Patat, F.
b0cd4f57-b9be-49d8-a5fc-89c869289505
Gal-Yam, A.
21353e10-c914-495b-a841-b9b79b9b7954
Hook, I. M.
df20607e-0685-4faa-b7fc-973627dd44cc
Dhawan, S.
8d4c83eb-2488-4cfe-96b3-f8314d64f6d8
Howell, D. A.
cef584ef-f8d1-4064-9b3b-25b20c40c0bd
Mazzali, P.
00e826f0-3a40-4e77-a6e7-c0a0877eae58
Nugent, P. E.
4559da92-6f56-4810-9c9e-314d139ab34a
Pan, Y.- C.
378f40fb-d382-4ec4-aabf-ea5559a2d6da
Podsiadlowski, P.
750c4f4f-5ec3-461f-9428-91f708a5caeb
Simon, J. D.
e3ded264-e80b-495b-af4b-a0e13ba9ed38
Sternberg, A.
0a179884-7518-485f-9fab-4b0168c94f75
Valenti, S.
3a324949-946e-4b07-83ea-ba19d11bb91a
Baltay, C.
aff33e27-54b4-4da7-9785-30e2fae20ae7
Bersier, D.
cf80f4d0-e01a-4885-9aab-4d5784170a3d
Blagorodnova, N.
8e517266-3055-4e02-a321-765c986d4846
Chen, T.- W.
9522cdd3-7a2e-41b2-a8e6-aa730fffd916
Ellman, N.
61a49739-3d44-44f6-bfe8-9e059005ee14
Feindt, U.
bfceacc8-3a6b-479d-ba2e-c5e387882249
Forster, F.
c0d37dd1-287e-4061-9889-98285c202067
Fraser, M.
525afe70-c2ed-49e4-b46d-3fe44dd2de68
Gonzalez-Gaitan, S.
57a49592-3b1f-4492-bc30-0ef0156023ec
Graham, M. L.
696ef8dd-8fb7-42ed-a4be-c2c1a2b74d06
Gutierrez, C.
f66ec260-76db-4284-b81a-7de3a3bea3c8
Hachinger, S.
049d43d7-bc8d-41b0-b259-29211cada631
Hadjiyska, E.
c59aad70-e6b4-404a-a06e-b01a7cd79aa9
Inserra, C.
4bb3e0c1-6854-4b60-b6b0-0ce0457dc3ca
Knapic, C.
3cc3956a-788a-46ff-a7e5-e30a4bebfa56
Laher, R. R.
4489e67f-8929-44f1-af59-c2f150f799b8
Leloudas, G.
918d1465-2267-434e-85c1-c6432aaabce4
Margheim, S.
67bedf62-0399-45fa-9b77-5842bdd97d57
McKinnon, R.
f400b74c-2f9f-4aeb-b081-2358052705b6
Molinaro, M.
11ad3080-65b5-48d7-af39-1d697575b7b0
Morrell, N.
c04ca685-6c6c-49eb-86fe-3f9b16230515
Ofek, E. O.
85a83718-89bf-46d7-84b7-e33dcea29a25
Rabinowitz, D.
962bd985-534b-414f-91f1-df575d59ff13
Rest, A.
46703e55-0c80-41d1-aeff-27269f39ddc3
Sand, D.
4d31236c-c862-4f36-95fd-b9c271d77275
Smareglia, R.
e2c643ab-dee4-4102-bc7f-c8aee8ecb4b3
Smartt, S. J.
feb44ff4-12b4-4352-9af5-5e21d95d2aea
Taddia, F.
7003cdfc-f170-49b7-9776-87f701a17e0b
Walker, E. S.
3da7af85-b2a1-4bd2-a1c2-25eacf956545
Walton, N. A.
9844e05e-7f43-4e34-aed9-cf801ddf98c8
Young, D. R.
4d63f819-76d7-4c6e-b45a-6ee86bb95e5d

Maguire, K., Sullivan, M., Patat, F., Gal-Yam, A., Hook, I. M., Dhawan, S., Howell, D. A., Mazzali, P., Nugent, P. E., Pan, Y.- C., Podsiadlowski, P., Simon, J. D., Sternberg, A., Valenti, S., Baltay, C., Bersier, D., Blagorodnova, N., Chen, T.- W., Ellman, N., Feindt, U., Forster, F., Fraser, M., Gonzalez-Gaitan, S., Graham, M. L., Gutierrez, C., Hachinger, S., Hadjiyska, E., Inserra, C., Knapic, C., Laher, R. R., Leloudas, G., Margheim, S., McKinnon, R., Molinaro, M., Morrell, N., Ofek, E. O., Rabinowitz, D., Rest, A., Sand, D., Smareglia, R., Smartt, S. J., Taddia, F., Walker, E. S., Walton, N. A. and Young, D. R. (2013) A statistical analysis of circumstellar material in Type Ia supernovae. Monthly Notices of the Royal Astronomical Society, 436 (1), 222-240. (doi:10.1093/mnras/stt1586).

Record type: Article

Abstract

A key tracer of the elusive progenitor systems of Type Ia supernovae (SNe Ia) is the detection of narrow blueshifted time-varying Na?i D absorption lines, interpreted as evidence of circumstellar material surrounding the progenitor system. The origin of this material is controversial, but the simplest explanation is that it results from previous mass-loss in a system containing a white dwarf and a non-degenerate companion star. We present new single-epoch intermediate-resolution spectra of 17 low-redshift SNe Ia taken with XShooter on the European Southern Observatory Very Large Telescope. Combining this sample with events from the literature, we confirm an excess (?20 per?cent) of SNe Ia displaying blueshifted narrow Na?i D absorption features compared to redshifted Na?i D features. The host galaxies of SNe Ia displaying blueshifted absorption profiles are skewed towards later-type galaxies, compared to SNe Ia that show no Na?i D absorption and SNe Ia displaying blueshifted narrow Na?i D absorption features have broader light curves. The strength of the Na?i D absorption is stronger in SNe Ia displaying blueshifted Na?i D absorption features than those without blueshifted features, and the strength of the blueshifted Na?i D is correlated with the B ? V colour of the SN at maximum light. This strongly suggests the absorbing material is local to the SN. In the context of the progenitor systems of SNe Ia, we discuss the significance of these findings and other recent observational evidence on the nature of SN Ia progenitors. We present a summary that suggests that there are at least two distinct populations of normal, cosmologically useful SNe Ia.

PDF
__userfiles.soton.ac.uk_Users_nl2_mydesktop_222full.pdf - Version of Record
Available under License Other.
Download (2MB)

More information

e-pub ahead of print date: 26 September 2013
Published date: 21 November 2013
Keywords: circumstellar matter, supernovae: general, distance scale
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 369364
URI: https://eprints.soton.ac.uk/id/eprint/369364
ISSN: 0035-8711
PURE UUID: 5ab761f7-1279-48ac-829c-4be00b921e41
ORCID for M. Sullivan: ORCID iD orcid.org/0000-0001-9053-4820

Catalogue record

Date deposited: 24 Sep 2014 13:46
Last modified: 06 Jun 2018 12:27

Export record

Altmetrics

Contributors

Author: K. Maguire
Author: M. Sullivan ORCID iD
Author: F. Patat
Author: A. Gal-Yam
Author: I. M. Hook
Author: S. Dhawan
Author: D. A. Howell
Author: P. Mazzali
Author: P. E. Nugent
Author: Y.- C. Pan
Author: P. Podsiadlowski
Author: J. D. Simon
Author: A. Sternberg
Author: S. Valenti
Author: C. Baltay
Author: D. Bersier
Author: N. Blagorodnova
Author: T.- W. Chen
Author: N. Ellman
Author: U. Feindt
Author: F. Forster
Author: M. Fraser
Author: S. Gonzalez-Gaitan
Author: M. L. Graham
Author: C. Gutierrez
Author: S. Hachinger
Author: E. Hadjiyska
Author: C. Inserra
Author: C. Knapic
Author: R. R. Laher
Author: G. Leloudas
Author: S. Margheim
Author: R. McKinnon
Author: M. Molinaro
Author: N. Morrell
Author: E. O. Ofek
Author: D. Rabinowitz
Author: A. Rest
Author: D. Sand
Author: R. Smareglia
Author: S. J. Smartt
Author: F. Taddia
Author: E. S. Walker
Author: N. A. Walton
Author: D. R. Young

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×