SIMBAD references

2008CBET.1205....1B - Central Bureau Electronic Telegrams, 1205, 1 (2008/January-0)

Supernova 2008D in NGC 2770.

BLONDIN S., MATHESON T., MODJAZ M. and BERLIND P.

Abstract (from CDS):

NOTE: this text replaces that on CBET 1204. S. Blondin, Harvard-Smithsonian Center for Astrophysics (CfA), on behalf of the CfA Supernova Group; T. Matheson, National Optical Astronomy Observatory; and M. Modjaz, University of California at Berkeley, report that a spectrum (range 320-840 nm) of 2008D (cf. CBET 1202), obtained on Jan. 11.41 UT by P. Berlind with the MMT 6.5-m telescope (+ Blue Channel spectrograph), shows it most likely to be a peculiar type-Ic supernova in its early phases. The spectrum consists of a relatively blue continuum, with P-Cyg profiles (FWHM of approximately 10000 km/s) that are characteristic of a supernova spectrum blueward of 550 nm, and an extremely broad bump peaking at approximately 630 nm (with an associated absorption at 590 nm) that is similar to the Si II line (rest 635.5 nm) seen in the spectra of broad-line type-Ic supernovae around maximum light. More specifically, the double-absorption feature centered on 420 nm resembles that seen in the earliest spectrum of the normal type-Ic supernova 1990aa (cf. IAUC 5087, 5111; Matheson et al. 2001, A.J. 121, 1648), while the broad feature centered on 630 nm resembles the Si II bump seen in spectra of the broad-line type-Ic supernova 1998bw (associated with GRB 980425; cf. IAUC 6895, 6901; Patat et al. 2001, Ap.J. 555, 900) around maximum light (roughly three weeks after the gamma-ray-burst detection).

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