New Massive Binaries in the Cygnus OB2 Association
| Autor: | M. Virginia McSwain, Henry A. Kobulnicky, Daniel C. Kiminki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Physics
Orbital elements 010504 meteorology & atmospheric sciences Association (object-oriented programming) Astrophysics (astro-ph) Binary number FOS: Physical sciences Astronomy and Astrophysics Astrophysics 01 natural sciences Current sample Space and Planetary Science 0103 physical sciences Range (statistics) Cygnus OB2 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Popis: | As part of an ongoing study to determine the distribution of orbital parameters for massive binaries in the Cygnus OB2 Association, we present the orbital solutions for two new single-lined spectroscopic binaries, MT059 (O8V) & MT258 (O8V), and one double-lined eclipsing binary (Schulte 3). We also constrain the orbital elements of three additional double-lined systems (MT252, MT720, MT771). Periods for all systems range from 1.5-19 days and eccentricities range from 0-0.11. The six new OB binary systems bring the total number of multiple systems within the core region of Cyg OB2 to 11. The current sample does not show evidence for a ``twin-heavy'' binary distribution. 30 pages, 10 figures, 5 tables, accepted by ApJ |
| Databáze: | OpenAIRE |
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