Radio and optical studies of supernova 1961V in NGC 1058

Journal Article · Wed Jun 01 00:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166362· OSTI ID:6855051

Cowan, J J; Henry, R B.C.; Branch, D

Radio observations of the Sc galaxy NGC 1058 at 20 cm and 6 cm reveal two radio sources. One of the sources is coincident with supernova 1961V and has a spectral index of -0.4 + or - 0.3. This is the second (and probably the third) detection of radio emission from a supernova decades after optical maximum. The absolute luminosity of SN 1961V at 20 cm is comparable to Cas A. A second source, about 2.3 arcsec to the west, has a spectral index of -0.3 + or - 0.3 and is likely to be the remnant of a supernova that was not optically detected. Optical images of NGC 1058 show two faint H II regions associated with the radio sources. Filter photometry in several bands indicates that these two H II regions are normal with respect to the many optically brighter, albeit radio-quiet, H II regions in NGC 1058. 33 references.

• Research Organization: Oklahoma, Univ., Norman (USA)
• OSTI ID: 6855051
• Journal Information: Astrophys. J.; (United States), Vol. 329
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERNOVAE
RADIOWAVE RADIATION
VISIBLE RADIATION
BALMER LINES
COSMIC RADIO SOURCES
H2 REGIONS
LUMINOSITY
SUPERNOVA REMNANTS
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
STARS
VARIABLE STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources