NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Hydrogen two photon emission in the UV spectrum of type 2 supernovaeThe continuum emission of Type 2 supernovae demonstrates an ultraviolet (UV) excess when fit by black body emission is attempted. The H two photon emission is advanced as an explanation of the UV excess. A function by which the UV spectra of two Type 2 supernovae (SN 1979c in NGC 4321 and SN 1980k in NGC 6946) are fitted with U,B,V photometric data is presented. The angular velocity of expansion of the supernovae envelope is derived. From this, the linear velocity of expansion and the distances of the parent galaxies are derived. A distance of 17.3 Mpc is obtained for NGC 4321, and a distance of 7.1 Mpc for NGC 6946.
Document ID
19820023358
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Benvenuti, P. (European Space Agency. ESA Tracking Station Madrid, Spain)
Dopita, M. A. (Mount Stromlo and Siding Spring Observatory Munich, United States)
Dodorico, S. (European Southern Observatory)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: NASA. Goddard Space Flight Center Advan. in Ultraviolet Astron.
Subject Category
Astronomy
Accession Number
82N31234
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.

Related Records

IDRelationTitle19820023287Collected WorksAdvances in Ultraviolet Astronomy: Four Years of IUE Research
No Preview Available