SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Rusholme Ben)
 

Search: WFRF:(Rusholme Ben) > (2020) > ZTF Early Observati...

  • Bulla, MattiaKTH,Stockholms universitet,Nordiska institutet för teoretisk fysik (Nordita),Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),Nordic Institute for Theoretical Physics NORDITA,The Oskar Klein Centre, Department of Physics, Stockholm University, AlbaNova, SE-10691 Stockholm, Sweden (author)

ZTF Early Observations of Type Ia Supernovae. III. Early-time Colors As a Test for Explosion Models and Multiple Populations

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • 2020-10-09
  • American Astronomical Society,2020
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-187674
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-187674URI
  • https://doi.org/10.3847/1538-4357/abb13cDOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-290325URI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

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

Notes

  • QC 20211108
  • Colors of Type Ia supernovae (SNe Ia) in the first few days after explosion provide a potential discriminant between different models. In this paper, we present g - r colors of 65 SNe Ia discovered within 5 days from first light by the Zwicky Transient Facility in 2018, a sample that is about three times larger than that in the literature. We find that g - r colors are intrinsically rather homogeneous at early phases, with about half of the dispersion attributable to photometric uncertainties (0.18 mag). Colors are nearly constant starting from 6 days after first light (g-r similar to -0.15 mag), while the time evolution at earlier epochs is characterized by a continuous range of slopes, from events rapidly transitioning from redder to bluer colors (slope of similar to-0.25 mag day(-1)) to events with a flatter evolution. The continuum in the slope distribution is in good agreement both with models requiring some amount of Ni-56 mixed in the outermost regions of the ejecta and with double-detonation models having thin helium layers (M-He = 0.01 M-circle dot) and varying carbon-oxygen core masses. At the same time, six events show evidence for a distinctive red bump signature predicted by double-detonation models with larger helium masses. We finally identify a significant correlation between the early-timeg - rslopes and supernova brightness, with brighter events associated to flatter color evolution (p-value = 0.006). The distribution of slopes, however, is consistent with being drawn from a single population, with no evidence for two components as claimed in the literature based on B - V colors.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Miller, Adam A. (author)
  • Yao, Yuhan (author)
  • Dessart, Luc (author)
  • Dhawan, SuhailStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sdhaw (author)
  • Papadogiannakis, SemeliStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)sepap (author)
  • Biswas, RahulStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)rbisw (author)
  • Goobar, ArielStockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)ariel (author)
  • Kulkarni, S. R. (author)
  • Nordin, Jakob (author)
  • Nugent, Peter (author)
  • Polin, Abigail (author)
  • Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
  • Bellm, Eric C. (author)
  • Coughlin, Michael W. (author)
  • Dekany, Richard (author)
  • Golkhou, V. Zach (author)
  • Graham, Matthew J. (author)
  • Kasliwal, Mansi M. (author)
  • Kupfer, Thomas (author)
  • Laher, Russ R. (author)
  • Masci, Frank J. (author)
  • Porter, Michael (author)
  • Rusholme, Ben (author)
  • Shupe, David L. (author)
  • Stockholms universitetNordiska institutet för teoretisk fysik (Nordita) (creator_code:org_t)

Related titles

  • In:Astrophysical Journal: American Astronomical Society902:10004-637X1538-4357

Internet link

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view