A Large Fraction of Hydrogen-rich Supernova Progenitors Experience Elevated Mass Loss Shortly Prior to Explosion

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Bruch, Rachel J. (author)

A Large Fraction of Hydrogen-rich Supernova Progenitors Experience Elevated Mass Loss Shortly Prior to Explosion

Article/chapterEnglish2021

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2021-05-04
American Astronomical Society,2021
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LIBRIS-ID:oai:DiVA.org:su-193688
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-193688URI
https://doi.org/10.3847/1538-4357/abef05DOI

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Language:English
Summary in:English

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

Spectroscopic detection of narrow emission lines traces the presence of circumstellar mass distributions around massive stars exploding as core-collapse supernovae. Transient emission lines disappearing shortly after the supernova explosion suggest that the material spatial extent is compact and implies an increased mass loss shortly prior to explosion. Here, we present a systematic survey for such transient emission lines (Flash Spectroscopy) among Type II supernovae detected in the first year of the Zwicky Transient Facility survey. We find that at least six out of ten events for which a spectrum was obtained within two days of the estimated explosion time show evidence for such transient flash lines. Our measured flash event fraction (>30% at 95% confidence level) indicates that elevated mass loss is a common process occurring in massive stars that are about to explode as supernovae.

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NATURVETENSKAP Fysik hsv//swe
NATURAL SCIENCES Physical Sciences hsv//eng

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Gal-Yam, Avishay (author)
Schulze, SteveStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Weizmann Institute of Science, Israel(Swepub:su)stsc6413 (author)
Yaron, Ofer (author)
Yang, Yi (author)
Soumagnac, Maayane (author)
Rigault, Mickael (author)
Strotjohann, Nora L. (author)
Ofek, Eran (author)
Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
Masci, Frank J. (author)
Barbarino, Cristina (author)
Ho, Anna Y. Q. (author)
Fremling, Christoffer (author)
Perley, Daniel (author)
Nordin, Jakob (author)
Cenko, S. Bradley (author)
Adams, S. (author)
Adreoni, Igor (author)
Bellm, Eric C. (author)
Blagorodnova, Nadia (author)
Bulla, MattiaStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)mbull (author)
Burdge, Kevin (author)
De, Kishalay (author)
Dhawan, SuhailStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sdhaw (author)
Drake, Andrew J. (author)
Duev, Dmitry A. (author)
Dugas, Alison (author)
Graham, Matthew (author)
Graham, Melissa L. (author)
Irani, Ido (author)
Jencson, Jacob (author)
Karamehmetoglu, EmirStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Aarhus University, Denmark(Swepub:su)emka6994 (author)
Kasliwal, Mansi (author)
Kim, Young-Lo (author)
Kulkarni, Shrinivas (author)
Kupfer, Thomas (author)
Liang, Jingyi (author)
Mahabal, Ashish (author)
Miller, A. A. (author)
Prince, Thomas A. (author)
Riddle, Reed (author)
Sharma, Y. (author)
Smith, Roger (author)
Taddia, FrancescoStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Aarhus University, Denmark (author)
Taggart, Kirsty (author)
Walters, Richard (author)
Yan, Lin (author)
Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

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In:Astrophysical Journal: American Astronomical Society912:10004-637X1538-4357

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By the author/editor: Bruch, Rachel J.; Gal-Yam, Avishay; Schulze, Steve; Yaron, Ofer; Yang, Yi; Soumagnac, Maaya ...; show more...; Rigault, Mickael; Strotjohann, Nor ...; Ofek, Eran; Sollerman, Jespe ...; Masci, Frank J.; Barbarino, Crist ...; Ho, Anna Y. Q.; Fremling, Christ ...; Perley, Daniel; Nordin, Jakob; Cenko, S. Bradle ...; Adams, S.; Adreoni, Igor; Bellm, Eric C.; Blagorodnova, Na ...; Bulla, Mattia; Burdge, Kevin; De, Kishalay; Dhawan, Suhail; Drake, Andrew J.; Duev, Dmitry A.; Dugas, Alison; Graham, Matthew; Graham, Melissa ...; Irani, Ido; Jencson, Jacob; Karamehmetoglu, ...; Kasliwal, Mansi; Kim, Young-Lo; Kulkarni, Shrini ...; Kupfer, Thomas; Liang, Jingyi; Mahabal, Ashish; Miller, A. A.; Prince, Thomas A ...; Riddle, Reed; Sharma, Y.; Smith, Roger; Taddia, Francesc ...; Taggart, Kirsty; Walters, Richard; Yan, Lin; show less...

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