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Astron. Astrophys. 326, 982-987 (1997)

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SN 1995ah: the first supernova observed
in a blue compact dwarf galaxy *

Cristina C. Popescu [FORMULA] 1, 5, Piero Rafanelli 2, Stefano Benetti 3, Ulrich Hopp [FORMULA] ** 4, Kurt Birkle 1 and Hans Elsässer 1

1 Max Planck Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg, Germany
2 Department of Astronomy, University of Padova, Vicolo Osservatorio 5, I-35122 Padova, Italy
3 European Southern Observatory, Alonso de Cordova 3107, Vitacura, Casilla 19001 Santiago 19, Chile
4 Universitätssternwarte München, Scheiner Str.1, D-81679 München, Germany
5 The Astronomical Institute of the Romanian Academy, Str. Cuitul de Argint 5, R-75212 Bucharest, Romania

Received 2 June 1997 / Accepted 21 July 1997


We present the properties of the supernova SN 1995ah discovered in a Blue Compact Dwarf galaxy (BCD) around 10 days after the maximum. This is the first supernova event observed in a BCD. The photometric and spectroscopic data suggest that SN 1995ah is a Type II supernova and could belong to the rare Bright SNII Linear subclass, for which [FORMULA] at maximum light.

Key words: supernovae: individual: SN 1995ah - galaxies: individual: HS0016+1449 - galaxies: compact

* Partly based on observations obtained at the European Southern Observatory, La Silla, Chile and at the German-Spanish Observatory, Calar Alto, Almeria, Spain
** Visiting astronomer at Calar Alto

Present address: MPIK, Saupfercheckweg1, D-69117 Heidelberg, Germany

Send offprint requests to: Cristina C. Popescu

SIMBAD Objects


Note added in proof: As mentioned before, there is lots of confusion in the literature in the definiton of a BCD. In this paper we followed the definition of Salzer, MacAlpine and Boroson (1989); the so called starburst nucleus and dwarf amorphous nuclear starburst galaxies were not consider as belonging to the BCD class. But many authors call these latter starburst galaxies also BCDs. An example is NGC5253 (classified as Im pec in NED), a dwarf amorphous nuclear starburst galaxy, in which two SN of type Ia were discovered, namely SN1895B and SN1972E.

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© European Southern Observatory (ESO) 1997

Online publication: April 8, 1998