0246+18: A VARIABLE STAR SUPERPOSED ON A BRIGHT GALAXY

0246+18: A VARIABLE STAR SUPERPOSED ON A BRIGHT GALAXY

The composite object 0246+18, which consists of a bright galaxy with a star superposed on it, has been observed to be optically variable. Data obtained from the archival plate collection at the Harvard College Observatory indicate that the object has a total range ∆B ≥ 1ṃ5. Photoelectric photometry...

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Veröffentlicht in:Publications of the Astronomical Society of the Pacific 1979-04, Vol.91 (540), p.161-162
Hauptverfasser: MILLER, H. RICHARD, McGIMSEY, BEN Q.
Format: Artikel
Sprache:eng
Schlagworte:
Apparent magnitude
Astronomical magnitude
Astronomical objects
Astronomical photometry
Galaxies
Light curves
Milky Way Galaxy
Standard stars
Stars
Variable stars
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Beschreibung
Zusammenfassung:The composite object 0246+18, which consists of a bright galaxy with a star superposed on it, has been observed to be optically variable. Data obtained from the archival plate collection at the Harvard College Observatory indicate that the object has a total range ∆B ≥ 1ṃ5. Photoelectric photometry of this source reveals changes of at least 0ṃ11 on consecutive nights. The UBV colors are consistent with the hypothesis that the optical variations are due to the superposed star. There is no convincing evidence that the nucleus of this galaxy is optically active.
ISSN:0004-6280
1538-3873
DOI:10.1086/130461