Discovery of a new cool WR star in a low excitation planetary nebula

Details Discovery of a new cool WR star in a low excitation planetary nebula Discovery of a new cool WR star in a low excitation planetary nebula

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...234..435h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 234, no. 1-2, Aug. 1990, p. 435-438.

Astronomy and Astrophysics

Astronomy

34

Planetary Nebulae, Protoplanets, Wolf-Rayet Stars, Astronomical Photometry, Astronomical Spectroscopy, Carbon, Charge Coupled Devices, Infrared Astronomy Satellite, Star Distribution, Stellar Luminosity

Scientific paper

A new cool WR star, IRAS 17514-1555, has been discovered in a low-excitation planetary nebula, as a result of a systematic survey of protoplanetary nebulae. The spectrum of the central star shows strong C II lines in emission, whereas the C IV lines are absent. This property is similar to that of M 4-18, which is a subluminous WC 11 star. Other characteristics of IRAS 17514-1555 are discussed and compared with those of other cool Wolf-Rayet stars. It is argued that the central object is connected with a newly formed planetary nebula. A comment on the criteria for the classification of cool WR stars is presented.

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