An atlas of confirmed and candidate supernova remnants in M33

Details An atlas of confirmed and candidate supernova remnants in M33 An atlas of confirmed and candidate supernova remnants in M33

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apjs...72...61l&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 72, Jan. 1990, p. 61-73. Research supported by Johns Hopkins Univ

Astronomy and Astrophysics

Astronomy

55

Astronomical Catalogs, Sky Surveys (Astronomy), Spiral Galaxies, Supernova Remnants, Abundance, Forbidden Transitions, H Alpha Line, Oxygen Spectra, Sulfur

Scientific paper

Thirty emission nebulae in M33 have been discovered which, on the basis of strong forbidden S II compared with H-alpha, are almost certainly supernova remnants. The total number of known supernova remnants in M33 is now about 50. The cumulative number versus diameter relationship for the nebulae in the sample appears to show evidence of shock deceleration. The number of supernova remnants in M33 is consistent with a supernova rate of one per 26-300 yr. The observations are described and positions, diameters, line ratios, and images of the new candidates are presented, as well as 10 previously known and two suggested supernova remnants in M33 that were in the survey region.

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