Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27935
Title: A significantly off-centre 56Ni distribution for the low-luminosity type Ia supernova SN 2016brx from the 100IAS survey
Authors: Dong, Subo
Katz, Boaz
Kollmeier, Juna A.
Kushnir, Doron
ELIAS DE LA ROSA, NANCY DEL CARMEN 
Bose, Subhash
Morrell, Nidia
Prieto, J. L.
Chen, Ping
Kochanek, C. S.
Brandt, G. M.
Holoien, T. W. -S.
Gal-Yam, Avishay
Morales-Garoffolo, Antonia
Parker, Stuart
Phillips, M. M.
Piro, Anthony L.
Shappee, B. J.
Simon, Joshua D.
Stanek, K. Z.
Issue Date: 2018
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 479
Issue: 1
First Page: L70
Abstract: We present nebular-phase spectra of the Type Ia supernova (SN Ia) 2016brx, a member of the 1991bg-like subclass that lies at the faint end of the SN Ia luminosity function. Nebular spectra are available for only three other 1991bg-like SNe, and their Co line centres are all within ≲500 km s-1 of each other. In contrast, the nebular Co line centre of SN 2016brx is blue-shifted by >1500 km s-1 compared to them and by ≈1200 km s-1 compared to the rest frame. This is a significant shift relative to the narrow nebular line velocity dispersion of ≲2000 km s-1 of these SNe. The large range of nebular line shifts implies that the 56Ni in the ejecta of SN 1991bg-like events is off-centre by ∼1000 km s-1 rather than universally centrally confined as previously suggested. With the addition of SN 2016brx, the Co nebular line shapes of 1991bg-like objects appear to connect with the brighter SNe Ia that show double-peaked profiles, hinting at a continuous distribution of line profiles among SNe Ia. One class of models to produce both off-centre and bimodal 56Ni distributions is collisions of white dwarfs with unequal and equal masses.
URI: http://hdl.handle.net/20.500.12386/27935
URL: https://arxiv.org/pdf/1805.00010.pdf
https://academic.oup.com/mnrasl/article/479/1/L70/5032382
ISSN: 0035-8711
DOI: 10.1093/mnrasl/sly098
Bibcode ADS: 2018MNRAS.479L..70D
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat 
Dong_2018MNRAS.479L..70D_preprint.pdfpreprint679.34 kBAdobe PDFView/Open
sly098.pdfPdf editoriale741.71 kBAdobe PDFView/Open
Show full item record

Page view(s)

12
checked on Jan 19, 2021

Download(s)

4
checked on Jan 19, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE