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Title: IUE observations of high galactic latitude F supergiants HD 161796 and HD 187885
Authors: Parthasarathy, M
Pottasch, S. R
Wamsteker, W
Keywords: Hot Stars;IUE;Supergiant Stars;Ultraviolet Astronomy;Absorption Spectra;F Stars;Infrared Astronomy Satellite;Planetary Nebulae;Stellar Temperature
Issue Date: Sep-1988
Publisher: European Southern Observatory
Citation: Astronomy and Astrophysics , Vol. 203, No. 1, pp. 117 - 122
Abstract: Low resolution (6 A) IUE ultraviolet spectra of the high galactic latitude F supergiants HD 161796 (F3 Ib) and HD 187885 (F2-3I) are analyzed. The UV spectrum (1250 A to 3250 A) of HD 161796 shows no excess UV flux attributable to a hot degenerate companion. From the UV spectrum the temperature is found to be 6300 K. There is no evidence for significant metal deficiency. Except for the semiforbidden N IV 1487 A line the rest of the transition region emission lines are weak. In spite of the large IR (IRAS) excess, the 2200 A region shows no evidence for circumstellar reddening. The UV spectrum (1250 A to 1900 A) of HD 187885 is peculiar. A broad emission feature with emission peak centered around 1580 A is present. A broad absorption feature nearly 100 A wide centered around 1657 A appears to be present. This absorption feature may be due to C I or due to quasi-molecular absorption of the H2.
ISSN: 0004-6361
Appears in Collections:IIAP Publications

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