Don’t blink: constraining the circumstellar environment of the interacting type Ia supernova 2015cp
| العنوان: | Don’t blink: constraining the circumstellar environment of the interacting type Ia supernova 2015cp |
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| المؤلفون: | Ori Fox, Peter Nugent, Assaf Horesh, Stefano Valenti, Chelsea E. Harris, Ken J. Shen, Kate Maguire, Nathaniel R. Butler, Rob Fender, Ariel Goobar, Joe Bright, Mathew Smith, Alexei V. Filippenko, Melissa L. Graham, Patrick L. Kelly |
| المصدر: | The Astrophysical Journal Astrophysical Journal, vol 868, iss 1 The Astrophysical Journal, vol 868, iss 1 |
| بيانات النشر: | American Astronomical Society, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | FOS: Physical sciences, Astrophysics, Astronomy & Astrophysics, Type (model theory), Atomic, Physical Chemistry, 01 natural sciences, 010305 fluids & plasmas, symbiotic [binaries], Particle and Plasma Physics, individual [supernovae], Hubble space telescope, 0103 physical sciences, Nuclear, 010303 astronomy & astrophysics, Chandrasekhar limit, High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Physics, Molecular, White dwarf, mass-loss [stars], Astronomy and Astrophysics, Accretion (astrophysics), Supernova, Space and Planetary Science, Astrophysics - High Energy Astrophysical Phenomena, general [supernovae], Astronomical and Space Sciences, Physical Chemistry (incl. Structural) |
| الوصف: | 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 $\sim 10^{16}~{\rm cm}$. 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, Nugent, & Kasen (2016) to limit the properties of a constant-density CSM shell in this system. Assuming the HST detection was shortly after the shock crossed the CSM, we constrain the total CSM mass in this system to be $< 0.5~{\rm M_\odot}$. 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. 13 pages, 5 figures, published in The Astrophysical Journal |
| وصف الملف: | application/pdf; text |
| تدمد: | 0004-637X 1538-3873 1538-3881 0067-0049 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77c1faae1f052d100734b45c5021f9f0 https://ora.ox.ac.uk/objects/uuid:976213a3-427b-4186-9d2d-6b11ed14532d |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....77c1faae1f052d100734b45c5021f9f0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0004637X 15383873 15383881 00670049 |
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