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Catalog Service:
2000-2008 UBV observations of HD 179821

Short name: J/PAZh/35/846
IVOA Identifier: ivo://CDS.VizieR/J/PAZh/35/846
Bibcode: 2009AstL...35..764A
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/PAZh/35/846
VO Compliance: Level 2: This is a VO-compliant resource.
Status: active
Registered: 2010 Feb 04 09:48:53Z
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Description


We present new results of our UBV photometry for HD 179821=V1427 Aql, an F supergiant with an infrared excess, from 2000 to 2008. The semiregular low-amplitude ({Delta}=0.05-0.20mag) photometric variability of the star with a cycle period from 130 to 200 days is caused by pulsations, along with the instability of a variable stellar wind. V1427 Aql also exhibits a long-term trend in the brightness and colors that is probably attributable to a change in the stellar temperature as a result of mass loss episodes, which cause variations in the continuum formation level. We present the results of our JHKLM photometry for V1427 Aql in 1992-2008.

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