High-latitude F supergiant IRAS 18095 + 2704 - a proto-planetary nebula

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/166603· OSTI ID:6684956

Hrivnak, B J; Kwok, S; Volk, K M

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. 31 references.

• Research Organization: Valpariso Univ., IN (USA); Calgary Univ. (Canada)
• OSTI ID: 6684956
• Journal Information: Astrophys. J.; (United States), Vol. 331
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
SUPERGIANT STARS
STAR EVOLUTION
ABUNDANCE
COMPARATIVE EVALUATIONS
FAR INFRARED RADIATION
MASS TRANSFER
PHOTOMETRY
PLANETARY NEBULAE
STAR MODELS
VARIATIONS
VISIBLE SPECTRA
ELECTROMAGNETIC RADIATION
GIANT STARS
INFRARED RADIATION
MATHEMATICAL MODELS
NEBULAE
RADIATIONS
SPECTRA
STARS
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources