|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'504'585
Articles rated: 2609
24 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
The SPIRITS sample of Luminous Infrared Transients: Uncovering Hidden Supernovae and Dusty Stellar Outbursts in Nearby Galaxies | | Jacob E. Jencson
; Mansi M. Kasliwal
; Scott M. Adams
; Howard E. Bond
; Kishalay De
; Joel Johansson
; Viraj Karambelkar
; Ryan M. Lau
; Samaporn Tinyanont
; Stuart D. Ryder
; Ann Marie Cody
; Frank J. Masci
; John Bally
; Nadia Blagorodnova
; Sergio Castellón
; Christoffer Fremling
; Robert D. Gehrz
; George Helou
; Charles D. Kilpatrick
; Peter A. Milne
; Nidia Morrell
; Daniel A. Perley
; Mark Phillips
; Nathan Smith
; Schuyler D. van Dyk
; Robert E. Williams
; | | Date: |
3 Jan 2019 | | Abstract: | We present a systematic study of the most luminous ($M_{mathrm{IR}}$ [Vega
magnitudes] brighter than $-14$) infrared (IR) transients discovered by the
SPitzer InfraRed Intensive Transients Survey (SPIRITS) between 2014-2018 in
nearby galaxies ($D < 35$ Mpc). The sample consists of 9 events that span peak
IR luminosities of $M_{[4.5],mathrm{peak}}$ between $-14$ and $-18.2$, show IR
colors between $0.2 < ([3.6] - [4.5]) < 3.0$, and fade on timescales between
$55 < t_{mathrm{fade}} < 480$ days. The two reddest events ($A_V > 12$) show
multiple, luminous IR outbursts over several years and have directly detected,
massive progenitors in archival imaging. With analyses of extensive,
multi-wavelength follow-up, we infer the following likely classifications: 5
obscured core-collapse supernovae (CCSNe), 2 erupting massive stars, 1 massive
stellar merger, and 1 possible electron capture SN. We define a control sample
of all optically discovered transients recovered in SPIRITS galaxies and
satisfying the same selection criteria. The control sample consists of 8 CCSNe
and 1 Type Iax SN. We find that 7 of the 13 CCSNe in the SPIRITS sample have
lower bounds on extinction of $2 < A_V < 8$, suggesting that a large population
of CCSNe is heavily obscured. We estimate a nominal fraction of CCSNe in nearby
galaxies that are missed by optical surveys of $38.5^{+26.0}_{-21.9}$% (90%
confidence). This may resolve long-standing discrepancies between measurements
of the CCSN rate and the cosmic star-formation rate. | | Source: | arXiv, 1901.0871 | | 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