V5485 Sagittarii: A Possible Symbiotic Star Exhibiting Ellipsoidal Variation Evidence as Orbital Signature
J. Greaves
TL;DR
This paper presents evidence that V5485 Sagittarii is a symbiotic star with a 270-day orbital period, demonstrated through photometric ellipsoidal variations observed in its lightcurve.
Contribution
It provides the first photometric evidence of orbital period and ellipsoidal variation in V5485 Sagittarii, supporting its classification as a symbiotic star.
Findings
Detection of 270-day orbital period from lightcurve
Ellipsoidal variation indicates a close binary system
Supports classification of V5485 Sagittarii as a symbiotic star
Abstract
MACHO project photometry shows the candidate Symbiotic Star V5485 Sagittarii's red giant component has a photometric orbital period of 270 days as evidenced by ellipsoidal variation of the lightcurve.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Astronomical Observations and Instrumentation