New Massive Binaries in the Cygnus OB2 Association

Abstract

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

References in corpus (12)

• A new calibration of stellar parameters of Galactic O stars
• A Grid of NLTE Line-Blanketed Model Atmospheres of O-type Stars
• On the Formation of Massive Stars
• The Physical Properties and Effective Temperature Scale of O-type Stars as a Function of Metallicity. II. Analysis of 20 More Magellanic Cloud Stars, and Results from the Complete Sample
• A Study of Cyg OB2: Pointing the Way Towards Finding Our Galaxy's Super Star Clusters
• The primordial binary population II: Recovering the binary population for intermediate mass stars in Sco OB2
• Binaries Like to be Twins: Implications for Doubly Degenerate Binaries, the Supernova Ia Rate and Other Interacting Binaries
• A Radial Velocity Survey of the Cygnus OB2 Association
• A Spectroscopic study of the non-thermal radio emitter Cyg OB2 #8A: Discovery of a new binary system
• Revealing the Nature of Algol Disks through Optical and UV Spectroscopy, Synthetic Spectra, and Tomography of TT Hydrae
• The Massive Triple Star System HD 16429 A
• Modelling spectral line profiles of wind-wind shock emissions from massive binary systems

Cited by in corpus (22)

• Toward Complete Statistics of Massive Binary Stars: Penultimate Results from the Cygnus OB2 Radial Velocity Survey
• An Updated Look at Binary Characteristics of Massive Stars in the Cygnus OB2 Association
• The Massive Star Population of Cygnus OB2
• Catalogue of particle-accelerating colliding-wind binaries
• MONOS: Multiplicity Of Northern O-type Spectroscopic systems. I. Project description and spectral classifications and visual multiplicity of previously known objects
• S-stars in the Galactic center and hypervelocity stars in the Galactic halo: two faces of the tidal breakup of stellar binaries by the central massive black hole?
• X-ray emission from massive stars in Cyg OB2
• On the spatial distribution and the origin of hypervelocity stars
• A multiwavelength investigation of the massive eclipsing binary Cyg OB2 #5
• Additional Massive Binaries in the Cygnus OB2 Association
• Spectroscopic characterization of the known O-star population in Cygnus OB2. Evidence of multiple star-forming bursts
• Predicting Gaia's Parallax Distance to the Cygnus OB2 Association with Eclipsing Binaries
• Five More Massive Binaries in the Cygnus OB2 Association
• An investigation into the fraction of particle accelerators among colliding-wind binaries. Towards an extension of the catalogue
• The spatial and velocity distributions of hypervelocity stars
• The eclipsing, double-lined, Of supergiant binary Cyg OB2-B17
• MONOS.II. Orbit review and analysis for 35 single-lined spectroscopic binary systems and candidates
• Open clusters and associations in the Gaia era
• An R- and I-Band Photometric Variability Survey of the Cygnus OB2 Association
• Period change of massive binaries from combined photometric and spectroscopic data in Cygnus OB2
• Investigating silicate, carbon, and water in the diffuse interstellar medium: the first shots from WISCI
• COBRaS: The e-MERLIN 21 cm Legacy survey of Cygnus OB2