Search: id:"swepub:oai:DiVA.org:su-187841" >
The low-luminosity ...
-
Müller-Bravo, Tomás E.
(author)
The low-luminosity Type II SN2016aqf : a well-monitored spectral evolution of the Ni/Fe abundance ratio
- Article/chapterEnglish2020
Publisher, publication year, extent ...
-
2020-07-06
-
Oxford University Press (OUP),2020
-
printrdacarrier
Numbers
-
LIBRIS-ID:oai:DiVA.org:su-187841
-
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-187841URI
-
https://doi.org/10.1093/mnras/staa1932DOI
Supplementary language notes
-
Language:English
-
Summary in:English
Part of subdatabase
Classification
-
Subject category:ref swepub-contenttype
-
Subject category:art swepub-publicationtype
Notes
-
Low-luminosity Type II supernovae (LL SNe II) make up the low explosion energy end of core-collapse SNe, but their study and physical understanding remain limited. We present SN 2016aqf, an LL SN II with extensive spectral and photometric coverage. We measure a V-band peak magnitude of −14.58 mag, a plateau duration of ∼100 d, and an inferred 56Ni mass of 0.008 ± 0.002 M⊙. The peak bolometric luminosity, Lbol ≈ 1041.4 erg s−1, and its spectral evolution are typical of other SNe in the class. Using our late-time spectra, we measure the [O i] λλ6300, 6364 lines, which we compare against SN II spectral synthesis models to constrain the progenitor zero-age main-sequence mass. We find this to be 12 ± 3 M⊙. Our extensive late-time spectral coverage of the [Fe ii] λ7155 and [Ni ii] λ7378 lines permits a measurement of the Ni/Fe abundance ratio, a parameter sensitive to the inner progenitor structure and explosion mechanism dynamics. We measure a constant abundance ratio evolution of 0.081+0.009−0.010 and argue that the best epochs to measure the ratio are at ∼200–300 d after explosion. We place this measurement in the context of a large sample of SNe II and compare against various physical, light-curve, and spectral parameters, in search of trends that might allow indirect ways of constraining this ratio. We do not find correlations predicted by theoretical models; however, this may be the result of the exact choice of parameters and explosion mechanism in the models, the simplicity of them, and/or primordial contamination in the measured abundance ratio.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
-
Gutiérrez, Claudia P.
(author)
-
Sullivan, Mark
(author)
-
Jerkstrand, AndersStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC),Max-Planck Institut für Astrophysik, Germany(Swepub:su)anje1871
(author)
-
Anderson, Joseph P.
(author)
-
González-Gaitán, Santiago
(author)
-
Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle
(author)
-
Arcavi, Iair
(author)
-
Burke, Jamison
(author)
-
Galbany, Lluís
(author)
-
Gal-Yam, Avishay
(author)
-
Gromadzki, Mariusz
(author)
-
Hiramatsu, Daichi
(author)
-
Hosseinzadeh, Griffin
(author)
-
Howell, D. Andrew
(author)
-
Inserra, Cosimo
(author)
-
Kankare, Erki
(author)
-
Kozyreva, Alexandra
(author)
-
McCully, Curtis
(author)
-
Nicholl, Matt
(author)
-
Smartt, Stephen
(author)
-
Valenti, Stefano
(author)
-
Young, Dave R.
(author)
-
Stockholms universitetInstitutionen för astronomi
(creator_code:org_t)
Related titles
-
In:Monthly notices of the Royal Astronomical Society: Oxford University Press (OUP)497:1, s. 361-3770035-87111365-2966
Internet link
Find in a library
To the university's database
- By the author/editor
-
Müller-Bravo, To ...
-
Gutiérrez, Claud ...
-
Sullivan, Mark
-
Jerkstrand, Ande ...
-
Anderson, Joseph ...
-
González-Gaitán, ...
-
show more...
-
Sollerman, Jespe ...
-
Arcavi, Iair
-
Burke, Jamison
-
Galbany, Lluís
-
Gal-Yam, Avishay
-
Gromadzki, Mariu ...
-
Hiramatsu, Daich ...
-
Hosseinzadeh, Gr ...
-
Howell, D. Andre ...
-
Inserra, Cosimo
-
Kankare, Erki
-
Kozyreva, Alexan ...
-
McCully, Curtis
-
Nicholl, Matt
-
Smartt, Stephen
-
Valenti, Stefano
-
Young, Dave R.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
- Articles in the publication
-
Monthly notices ...
- By the university
-
Stockholm University