|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'502'364
Articles rated: 2609
23 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
A luminous stellar outburst during a long-lasting eruptive phase first, and then SN IIn 2018cnf | | A. Pastorello
; A. Reguitti
; A. Morales-Garoffolo
; Z. Cano
; S. J. Prentice
; D. Hiramatsu
; J. Burke
; E. Kankare
; R. Kotak
; T. Reynolds
; S. J. Smartt
; S. Bose
; Ping Chen
; E. Congiu
; Subo Dong
; S. Geier
; M. Gromadzki
; E. Y. Hsiao
; S. Kumar
; P. Ochner
; G. Pignata
; L. Tomasella
; L. Wang
; I. Arcavi
; C. Ashall
; E. Callis
; A. de Ugarte Postigo
; M. Fraser
; G. Hosseinzadeh
; D. A. Howell
; C. Inserra
; D. A. Kann
; E. Mason
; P. A. Mazzali
; C. McCully
; O. Rodriguez
; M. M. Phillips
; K. W. Smith
; L. Tartaglia
; C. C. Thoene
; T. Wevers
; D. R. Young
; M. L. Pumo
; T. B. Lowe
; E. A. Magnier
; R. J. Wainscoat
; C. Waters
; D. E. Wright
; | | Date: |
3 Jun 2019 | | Abstract: | We present the results of the monitoring campaign of the Type IIn supernova
(SN) 2018cnf (aka ASASSN-18mr). It was discovered about 10 days before the
maximum light (on MJD = 58293.4+-5.7 in the V band, with MV = -18.13+-0.15
mag). The multiband light curves show an immediate post-peak decline with some
minor luminosity fluctuations, followed by a flattening starting about 40 days
after maximum. The early spectra are relatively blue and show narrow Balmer
lines with P Cygni profiles. Fe II, O I, He I and Ca II are also detected. The
spectra show little evolution with time, with intermediate-width features
becoming progressively more prominent, indicating stronger interaction of the
SN ejecta with the circumstellar medium. The inspection of archival images from
the Pan-STARRS survey has revealed a variable source at the SN position, with a
brightest detection in December 2015 at Mr = -14.66+-0.17 mag. This was likely
an eruptive phase from the massive progenitor star started at least from
mid-2011, and that produced the circumstellar environment within which the star
exploded as a Type IIn SN. The overall properties of SN 2018cnf closely
resemble those of transients such as SN 2009ip. This similarity favours a
massive hypergiant, perhaps a luminous blue variable, as progenitor for SN
2018cnf. | | Source: | arXiv, 1906.0814 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER