Supernova 2003H in NGC 2207.

Details Supernova 2003H in NGC 2207. Supernova 2003H in NGC 2207.

Jan 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003iauc.8047....3h&link_type=abstract

IAU Circ., 8047, 3 (2003)

Physics

Scientific paper

M. Hamuy, Carnegie Observatories, reports on spectroscopic observations made (as detailed on IAUC 8045) by J. Maza on Jan. 9 and 10 UT: "The spectrum of SN 2003H (cf. IAUC 8045, 8046) shows a red continuum with a prominent absorption at 575.1 nm; if this is He I 587.6-nm, the expansion velocity is 9100 km/s. A more shallow blend of absorption lines can be seen at 600-670 nm, and an isolated absorption is centered at 690 nm. The Ca II triplet displays a prominent P-Cyg profile. This spectrum has some similarity to that of the type-Ib supernova 1984L before maximum light, but the continuum is much more red. There is no evidence for strong Na I D interstellar lines, so dust extinction must be small and the red color is probably intrinsic to SN 2003H."

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