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Date and Time of the Query: 2018-12-15 T01:18:51 PST
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For refcode 1993A&AS..102..251M:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1993A&AS..102..251M An objective-prism survey of emission-line objects in M 31 N. Meyssonnier, J. Lequeux and M. Azzopardi Observatoire de Marseille, F-13248 Marseille Cedex 04, France Laboratoire de Radioastronomie Millimetrique, Observatoire de Paris- Meudon, F-92195 Meudon Cedex, France, et Ecole Normale Superieure Received October 21, 1992; accepted February 28, 1993 Abstract. - Using GRENS plates taken at the Canada-France-Hawaii telescope, we have searched almost the whole extent of M 31 for small- diameter objects with strong emission lines. Most are planetary nebulae candidates, but there are also many Wolf-Rayet star candidates and small HII regions or compact parts of large HII regions. A catalogue is presented with a cross-identification with previous catalogues. Many new planetary nebulae and Wolf-Rayet candidates are found. Their distribution is compared with those of other tracers in M 31. In particular the distribution of planetary nebulae candidates is compared with that of the integrated blue light and we confirm the result obtained by Jacoby (1980) and Ciardullo et al. (1989): the number of planetary nebulae per unit total luminosity is a constant throughout the disk of M 31. The Wolf- Rayet star candidates are concentrated in the well-known ring of star formation; their total number is estimated as 300 within the limit of detection of the deepest existing surveys, but this may still be an underestimate of the true number. Key words: galaxies, individual: M 31 - HII regions - planetary nebulae - Wolf-Rayet stars - galaxies: stellar content - surveys
Retrieve 1515 NED objects in this reference.
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