ADDITIONAL MASSIVE BINARIES IN THE CYGNUS OB2 ASSOCIATION

ADDITIONAL MASSIVE BINARIES IN THE CYGNUS OB2 ASSOCIATION

We report the discovery and orbital solutions for two new OB binaries in the Cygnus OB2 Association, MT311 (B2V + B3V) and MT605 (B0.5V + B2.5:V). We also identify the system MT429 as a probable triple system consisting of a tight eclipsing 2.97 day B3V+B6V pair and a B0V at a projected separation o...

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Veröffentlicht in:The Astrophysical journal 2012-03, Vol.747 (1), p.1-16
Hauptverfasser: IMINKI, Daniel C. K, KOBULNICKY, Henry A, EWING, Ian, BAGLEY KIMINKI, Megan M, LUNDQUIST, Michael, ALEXANDER, Michael, VARGAS-ALVAREZ, Carlos, CHOI, Heather, HENDERSON, C. B
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BINARY STARS
Binary systems
Earth, ocean, space
Exact sciences and technology
MATHEMATICAL SOLUTIONS
Orbitals
RADIAL VELOCITY
Separation
SPECTROSCOPY
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Zusammenfassung:We report the discovery and orbital solutions for two new OB binaries in the Cygnus OB2 Association, MT311 (B2V + B3V) and MT605 (B0.5V + B2.5:V). We also identify the system MT429 as a probable triple system consisting of a tight eclipsing 2.97 day B3V+B6V pair and a B0V at a projected separation of 138 AU. We further provide the first spectroscopic orbital solutions to the eclipsing, double-lined, O-star binary MT696 (O9.5V + B1:V), the double-lined, early B binary MT720 (B0-1V + B1-2V), and the double-lined, O-star binary MT771 (O7V + O9V). These systems exhibit orbital periods between 1.5 days and 12.3 days, with the majority having P
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/747/1/41