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Eearly spectroscopic identification of SN 2008D
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(2009) Eearly spectroscopic identification of SN 2008D. Astrophysical Journal Letters, Vol.692 (No.2). L84-L87. doi:10.1088/0004-637X/692/2/L84 ISSN 2041-8205.
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Official URL: http://dx.doi.org/10.1088/0004-637X/692/2/L84
Abstract
SN 2008D was discovered while following up an unusually bright X-ray transient (XT) in the nearby spiral galaxy NGC 2770. We present early optical spectra ( obtained 1.75 days after the XT) which allowed the first identification of the object as a supernova ( SN) at redshift z = 0.007. These spectra were acquired during the initial declining phase of the light curve, likely produced in the stellar envelope cooling after shock breakout, and rarely observed. They exhibit a rather flat spectral energy distribution with broad undulations, and a strong, W-shaped feature with minima at 3980 and 4190 angstrom ( rest frame). We also present extensive spectroscopy and photometry of the SN during the subsequent photospheric phase. Unlike SNe associated with gamma-ray bursts, SN 2008D displayed prominent He features and is therefore of Type Ib.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QB Astronomy | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Astrophysical Journal Letters | ||||
Publisher: | IOP Publishing Ltd | ||||
ISSN: | 2041-8205 | ||||
Official Date: | 20 February 2009 | ||||
Dates: |
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Volume: | Vol.692 | ||||
Number: | No.2 | ||||
Number of Pages: | 4 | ||||
Page Range: | L84-L87 | ||||
DOI: | 10.1088/0004-637X/692/2/L84 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | DNRF, Spanish research programs, EU, Icelandic Research Fund | ||||
Grant number: | AYA2004-01515, ESP2005-07714-C03-03, MEIF-CT2006-041363, PERG03-GA-2008-226653 |
Data sourced from Thomson Reuters' Web of Knowledge
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