The University of Southampton
University of Southampton Institutional Repository

Don't blink: constraining the circumstellar environment of the interacting Type Ia Supernova 2015cp

Don't blink: constraining the circumstellar environment of the interacting Type Ia Supernova 2015cp
Don't blink: constraining the circumstellar environment of the interacting Type Ia Supernova 2015cp

Despite their cosmological utility, the progenitors of Type Ia supernovae (SNe Ia) are still unknown, with many efforts focused on whether accretion from a nondegenerate companion can grow a carbon-oxygen white dwarf to near the Chandrasekhar mass. The association of SNe Ia resembling SN 1991T ("91T-like") with circumstellar interaction may be evidence for this "single-degenerate" channel. However, the observed circumstellar medium (CSM) in these interacting systems is unlike a stellar wind - of particular interest, it is sometimes detached from the stellar surface, residing at ∼1016 cm. A Hubble Space Telescope (HST) program to discover detached CSM around 91T-like SNe Ia successfully discovered interaction nearly two years after explosion in SN 2015cp (Graham et al. 2018). In this work, we present radio and X-ray follow-up observations of SN 2015cp and analyze them in the framework of Harris et al. (2016) to limit the properties of a constant-density CSM shell in this system. Assuming the HST detection took place shortly after the shock crossed the CSM, we constrain the total CSM mass in this system to be <0.5 . This limit is comparable to the CSM mass of supernova PTF11kx, but does not rule out lower masses predicted for recurrent novae. From lessons learned modeling PTF11kx and SN 2015cp, we suggest a strategy for future observations of these events to increase the sample of known interacting SNe Ia.

binaries: symbiotic, stars: mass-loss, supernovae: general, supernovae: individual (SN 2015cp)
0004-637X
Harris, C.E.
35488a3f-f461-41fc-9fa5-e025c259f8a1
Nugent, P.E.
4559da92-6f56-4810-9c9e-314d139ab34a
Horesh, A.
cc2a6ff6-819a-4c18-a203-e23d8efdec25
Bright, J.S.
5b8d003a-90ce-4c1d-a366-faeb348af2fa
Fender, R.P.
c802ddfc-25a3-4c0e-899d-11c405c705d1
Graham, M.L.
696ef8dd-8fb7-42ed-a4be-c2c1a2b74d06
Maguire, K.
94dfab90-b220-454f-8d2a-4ab4ffe27c65
Smith, M.
8bdc74e1-a37b-434d-ae75-82763109bf7a
Butler, N.
536bd847-9395-4a28-a5c8-336ebc3d93b6
Valenti, S.
3a324949-946e-4b07-83ea-ba19d11bb91a
Filippenko, A.V.
76d14187-e168-44cf-9db7-c5c2102c268b
Fox, O.
04b234fb-104a-4b84-a055-813b99d88bf7
Goobar, A.
ac815421-dedb-4275-83cb-12f9073d7c68
Kelly, P.L.
4119154a-ec5d-43a4-beb5-83929c276706
Shen, K.J.
b0f33b68-3de8-4ebb-a3cd-2aa0e1e96e15
Harris, C.E.
35488a3f-f461-41fc-9fa5-e025c259f8a1
Nugent, P.E.
4559da92-6f56-4810-9c9e-314d139ab34a
Horesh, A.
cc2a6ff6-819a-4c18-a203-e23d8efdec25
Bright, J.S.
5b8d003a-90ce-4c1d-a366-faeb348af2fa
Fender, R.P.
c802ddfc-25a3-4c0e-899d-11c405c705d1
Graham, M.L.
696ef8dd-8fb7-42ed-a4be-c2c1a2b74d06
Maguire, K.
94dfab90-b220-454f-8d2a-4ab4ffe27c65
Smith, M.
8bdc74e1-a37b-434d-ae75-82763109bf7a
Butler, N.
536bd847-9395-4a28-a5c8-336ebc3d93b6
Valenti, S.
3a324949-946e-4b07-83ea-ba19d11bb91a
Filippenko, A.V.
76d14187-e168-44cf-9db7-c5c2102c268b
Fox, O.
04b234fb-104a-4b84-a055-813b99d88bf7
Goobar, A.
ac815421-dedb-4275-83cb-12f9073d7c68
Kelly, P.L.
4119154a-ec5d-43a4-beb5-83929c276706
Shen, K.J.
b0f33b68-3de8-4ebb-a3cd-2aa0e1e96e15

Harris, C.E., Nugent, P.E., Horesh, A., Bright, J.S., Fender, R.P., Graham, M.L., Maguire, K., Smith, M., Butler, N., Valenti, S., Filippenko, A.V., Fox, O., Goobar, A., Kelly, P.L. and Shen, K.J. (2018) Don't blink: constraining the circumstellar environment of the interacting Type Ia Supernova 2015cp. The Astrophysical Journal, 868 (1). (doi:10.3847/1538-4357/aae521).

Record type: Article

Abstract

Despite their cosmological utility, the progenitors of Type Ia supernovae (SNe Ia) are still unknown, with many efforts focused on whether accretion from a nondegenerate companion can grow a carbon-oxygen white dwarf to near the Chandrasekhar mass. The association of SNe Ia resembling SN 1991T ("91T-like") with circumstellar interaction may be evidence for this "single-degenerate" channel. However, the observed circumstellar medium (CSM) in these interacting systems is unlike a stellar wind - of particular interest, it is sometimes detached from the stellar surface, residing at ∼1016 cm. A Hubble Space Telescope (HST) program to discover detached CSM around 91T-like SNe Ia successfully discovered interaction nearly two years after explosion in SN 2015cp (Graham et al. 2018). In this work, we present radio and X-ray follow-up observations of SN 2015cp and analyze them in the framework of Harris et al. (2016) to limit the properties of a constant-density CSM shell in this system. Assuming the HST detection took place shortly after the shock crossed the CSM, we constrain the total CSM mass in this system to be <0.5 . This limit is comparable to the CSM mass of supernova PTF11kx, but does not rule out lower masses predicted for recurrent novae. From lessons learned modeling PTF11kx and SN 2015cp, we suggest a strategy for future observations of these events to increase the sample of known interacting SNe Ia.

Text
Don't Blink- Constraining the Circumstellar Environment of the Interacting Type Ia Supernova 2015cp - Accepted Manuscript
Download (625kB)

More information

Accepted/In Press date: 26 September 2018
e-pub ahead of print date: 14 November 2018
Published date: 20 November 2018
Additional Information: Author Smith, has cofimed that Arxiv record is AM
Keywords: binaries: symbiotic, stars: mass-loss, supernovae: general, supernovae: individual (SN 2015cp)

Identifiers

Local EPrints ID: 426799
URI: https://eprints.soton.ac.uk/id/eprint/426799
ISSN: 0004-637X
PURE UUID: 98e9ee39-f355-44e4-bc61-cc45e631c164
ORCID for M. Smith: ORCID iD orcid.org/0000-0002-3321-1432

Catalogue record

Date deposited: 12 Dec 2018 17:30
Last modified: 17 May 2019 00:30

Export record

Altmetrics

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.

×