Reanalysis of the radii of the Benchmark eclipsing binary V578 Mon

Journal Article · Sat Jun 01 00:00:00 EDT 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/769/2/114· OSTI ID:22342075

Garcia, E. V.; Stassun, Keivan G. ^[1]; Torres, Guillermo ^[2]

---

1. Department of Physics and Astronomy, Vanderbilt University, VU Station B 1807, Nashville, TN 37235 (United States)
2. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Mail Stop 20, Cambridge, MA 02138 (United States)

V578 Mon is an eclipsing binary system in which both stars have masses above 10 M {sub ☉} determined with an accuracy better than 3%. It is one of only five such massive eclipsing binaries known that also possess eccentric orbits and measured apsidal motions, thus making it an important benchmark for theoretical stellar evolution models. However, recently reported determinations of the radii of V578 Mon differ significantly from previously reported values. We reanalyze the published data for V578 Mon and trace the discrepancy to the use of an incorrect formulation for the stellar potentials in the most recent analysis. Here we report corrected radii for this important benchmark eclipsing binary.

• OSTI ID: 22342075
• Journal Information: Astrophysical Journal, Vol. 769, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ACCURACY
BENCHMARKS
DATA
ECLIPSE
MASS
ORBITS
STAR EVOLUTION
STARS