Early spectroscopic identification of SN 2008D

D. Malesani; J. Fynbo; J. Hjorth; G. Leloudas; J. Sollerman; M. Stritzinger; P.M. Vreeswijk; D. Watson; J. Gorosabel; M. Michalowski; C.C. Thone; T. Augusteijn; D. Bersier; P. Jakobsson; A.O. Jaunsen; C. Ledoux; A. Levan; B. Milvang-Jensen; E. Rol; N. Tanvir; K. Wiersema; D. Xu

doi:10.1088/0004-637X/692/2/L84

Early spectroscopic identification of SN 2008D

D. Malesani, J. Fynbo, J. Hjorth, G. Leloudas, J. Sollerman, M. Stritzinger, P.M. Vreeswijk, D. Watson, J. Gorosabel, M. Michalowski, C.C. Thone, T. Augusteijn, D. Bersier, P. Jakobsson, A.O. Jaunsen, C. Ledoux, A. Levan, B. Milvang-Jensen, E. Rol, N. TanvirK. Wiersema, D. Xu

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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 Å (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.

Original language	English
Pages (from-to)	L84-L87
Journal	The Astrophysical Journal
Volume	692
DOIs	https://doi.org/10.1088/0004-637X/692/2/L84
Publication status	Published - 2009

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Malesani, D., Fynbo, J., Hjorth, J., Leloudas, G., Sollerman, J., Stritzinger, M., Vreeswijk, P. M., Watson, D., Gorosabel, J., Michalowski, M., Thone, C. C., Augusteijn, T., Bersier, D., Jakobsson, P., Jaunsen, A. O., Ledoux, C., Levan, A., Milvang-Jensen, B., Rol, E., ... Xu, D. (2009). Early spectroscopic identification of SN 2008D. The Astrophysical Journal, 692, L84-L87. https://doi.org/10.1088/0004-637X/692/2/L84

@article{afa789f8b7e64b688fc6d0af4b972ae6,

title = "Early spectroscopic identification of SN 2008D",

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 {\AA} (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.",

author = "D. Malesani and J. Fynbo and J. Hjorth and G. Leloudas and J. Sollerman and M. Stritzinger and P.M. Vreeswijk and D. Watson and J. Gorosabel and M. Michalowski and C.C. Thone and T. Augusteijn and D. Bersier and P. Jakobsson and A.O. Jaunsen and C. Ledoux and A. Levan and B. Milvang-Jensen and E. Rol and N. Tanvir and K. Wiersema and D. Xu",

note = "Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1088/0004-637X/692/2/L84 [Full text of this article is not available in the UHRA]",

year = "2009",

doi = "10.1088/0004-637X/692/2/L84",

language = "English",

volume = "692",

pages = "L84--L87",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

}

Malesani, D, Fynbo, J, Hjorth, J, Leloudas, G, Sollerman, J, Stritzinger, M, Vreeswijk, PM, Watson, D, Gorosabel, J, Michalowski, M, Thone, CC, Augusteijn, T, Bersier, D, Jakobsson, P, Jaunsen, AO, Ledoux, C, Levan, A, Milvang-Jensen, B, Rol, E, Tanvir, N, Wiersema, K & Xu, D 2009, 'Early spectroscopic identification of SN 2008D', The Astrophysical Journal, vol. 692, pp. L84-L87. https://doi.org/10.1088/0004-637X/692/2/L84

TY - JOUR

T1 - Early spectroscopic identification of SN 2008D

AU - Malesani, D.

AU - Fynbo, J.

AU - Hjorth, J.

AU - Leloudas, G.

AU - Sollerman, J.

AU - Stritzinger, M.

AU - Vreeswijk, P.M.

AU - Watson, D.

AU - Gorosabel, J.

AU - Michalowski, M.

AU - Thone, C.C.

AU - Augusteijn, T.

AU - Bersier, D.

AU - Jakobsson, P.

AU - Jaunsen, A.O.

AU - Ledoux, C.

AU - Levan, A.

AU - Milvang-Jensen, B.

AU - Rol, E.

AU - Tanvir, N.

AU - Wiersema, K.

AU - Xu, D.

N1 - Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society DOI: 10.1088/0004-637X/692/2/L84 [Full text of this article is not available in the UHRA]

PY - 2009

Y1 - 2009

N2 - 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 Å (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.

AB - 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 Å (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.

U2 - 10.1088/0004-637X/692/2/L84

DO - 10.1088/0004-637X/692/2/L84

M3 - Article

SN - 0004-637X

VL - 692

SP - L84-L87

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

Early spectroscopic identification of SN 2008D

Abstract

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