The high-latitude F supergiant IRAS 18095 + 2704 - A proto-planetary nebula

Details The high-latitude F supergiant IRAS 18095 + 2704 - A proto-planetary nebula The high-latitude F supergiant IRAS 18095 + 2704 - A proto-planetary nebula

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331..832h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 331, Aug. 15, 1988, p. 832-837. AAS-NSERC-NASA-supported research.

Astronomy and Astrophysics

Astronomy

71

F Stars, Infrared Astronomy Satellite, Planetary Nebulae, Stellar Evolution, Supergiant Stars, Abundance, Astronomical Photometry, Asymptotic Giant Branch Stars, Infrared Radiation, Sky Surveys (Astronomy), Stellar Envelopes, Visible Spectrum

Scientific paper

The paper reports the discovery of a new high-latitude F supergiant, IRAS 18095 + 2704, which shows a large excess in the far-infrared. Ground-based observations have identified it as a V = 10.4 mag F3 Ib star which displays light and velocity variability. Comparison with the post-asymptotic giant branch (AGB) evolution model of Volk and Kwok suggests that it is an excellent candidate for a protoplanetary nebula. Model fitting of the spectrum of 18095 + 2704 from 0.35 to 100 microns suggests that it evolved from the AGB approximately 265 yr ago and had a mass-loss rate of 0.00003 solar mass/yr at the end of the AGB.

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