Optical Photometry and Spectroscopy of the SN 1998bw–like Type Ic Supernova 2002ap
- 1 October 2003
- journal article
- research article
- Published by IOP Publishing in Publications of the Astronomical Society of the Pacific
- Vol. 115 (812) , 1220-1235
- https://doi.org/10.1086/378242
Abstract
We present optical photometric and spectral data of the peculiar Type Ic supernova SN 2002ap. Photometric coverage includes UBVRI bands from 2002 January 30, the day after discovery, through 2002 December 12. There are five early‐time spectra and eight in the nebular phase. We determine that SN 2002ap is similar to SN 1997ef and the gamma‐ray burst–associated SN 1998bw with respect to spectral and photometric characteristics. The nebular spectra of SN 2002ap present the largest Mg i] λ4571 to [O i] λλ6300, 6364 ratio of any supernova spectra yet published, suggesting that the progenitor of SN 2002ap was a highly stripped star. Comparing the nebular spectra of SN 1985F and SN 2002ap, we notice several similar features, casting the classification of SN 1985F as a normal Type Ib supernova in doubt. We also present nebular modeling of SN 2002ap and find that the object ejected 1.5 M⊙ of material within the outer velocity shell of the nebula (~5500 km s−1) and synthesized ~0.09 M⊙ of 56Ni.Keywords
All Related Versions
This publication has 50 references indexed in Scilit:
- Optical Spectra and Light Curves of SupernovaePublished by Springer Nature ,2003
- Optical Photometry and Spectroscopy of the SN 1998bw–like Type Ic Supernova 2002apPublications of the Astronomical Society of the Pacific, 2003
- The Radio Evolution of the Ordinary Type I[CLC]c[/CLC] Supernova SN 2002[CLC]ap[/CLC]The Astrophysical Journal, 2002
- The Type Ic SN 1990B in NGC 4568The Astrophysical Journal, 2001
- The Lick Observatory Supernova Search with the Katzman Automatic Imaging TelescopeInternational Astronomical Union Colloquium, 2001
- Spectrophotometry: Revised Standards and TechniquesPublications of the Astronomical Society of the Pacific, 1999
- On the Light Curves of Stripped‐Envelope SupernovaeThe Astrophysical Journal, 1997
- OPTICAL SPECTRA OF SUPERNOVAEAnnual Review of Astronomy and Astrophysics, 1997
- The 'Seyfert 1' optical spectra of the type II supernovae 1987F and 1988IThe Astronomical Journal, 1989
- The importance of atmospheric differential refraction in spectrophotometryPublications of the Astronomical Society of the Pacific, 1982