OPTICAL SPECTRA OF SUPERNOVAE
- 1 September 1997
- journal article
- Published by Annual Reviews in Annual Review of Astronomy and Astrophysics
- Vol. 35 (1), 309-355
- https://doi.org/10.1146/annurev.astro.35.1.309
Abstract
▪ Abstract The temporal evolution of the optical spectra of various types of supernovae (SNe) is illustrated, in part to aid observers classifying supernova candidates. Type II SNe are defined by the presence of hydrogen, and they exhibit a very wide variety of photometric and spectroscopic properties. Among hydrogen-deficient SNe (Type I), three subclasses are now known: those whose early-time spectra show strong Si II (Ia), prominent He I (Ib), or neither Si II nor He I (Ic). The late-time spectra of SNe Ia consist of a multitude of blended emission lines of iron-group elements; in sharp contrast, those of SNe Ib and SNe Ic (which are similar to each other) are dominated by several relatively unblended lines of intermediate-mass elements. Although SNe Ia, which result from the thermonuclear runaway of white dwarfs, constitute a rather homogeneous subclass, important variations in their photometric and spectroscopic properties are undeniably present. SNe Ib/Ic probably result from core collapse in massiv...Keywords
This publication has 240 references indexed in Scilit:
- The Absolute Luminosities of the Calan/Tololo Type IA SupernovaeThe Astronomical Journal, 1996
- SN 1991F in NGC 3458: A peculiar type IA supernova?The Astronomical Journal, 1995
- Light curves of SN 1993J from the Keck Northeast Astronomy ConsortiumThe Astronomical Journal, 1994
- THE CONTINENTAL MANTLETerra Nova, 1991
- Observations of the type II supernova 1986I in M99The Astronomical Journal, 1989
- Supernova 1909A: a precedent for SN1987A?Nature, 1988
- Better Science: A Challenging DebateStudies in Science Education, 1988
- A peculiar supernova in the spiral galaxy NGC4618Nature, 1985
- The Spectra of the Supernovae in IC 4182 and in NGC 1003.The Astrophysical Journal, 1939
- The Spectrum of the Super-Nova in IC 4182Publications of the Astronomical Society of the Pacific, 1937