A Survey for High-Mass Eclipsing Binaries

Abstract

We report results from a search for Galactic high-mass eclipsing binaries. The photometric monitoring campaign was performed in Sloan $r$ and $i$ with the robotic twin refractor RoBoTT at the Universitätssternwarte Bochum in Chile and complemented by Johnson $UBV$ data. Comparison with the SIMBAD database reveals 260 variable high-mass stars. Based on well-sampled light curves we discovered 35 new eclipsing high-mass systems and confirm the properties of six previously known systems. For all objects, we provide the first light curves and determine orbital periods through the Lafler-Kinman algorithm. Apart from GSC 08173-0018 and Pismis 24-13 ($P=19.47d$ and $20.14d$) and the exceptional short-period system TYC 6561-1765-1 ($P=0.71d$), all systems have orbital periods between 1 and 9 days. We model the light curves of 26 systems within the framework of the Roche geometry and calculate fundamental parameters for each system component. The Roche lobe analysis indicates that 14 systems have a detached geometry while 12 systems have a semi-detached geometry; seven of them are near-contact systems. The deduced mass ratios $q=M_2/M_1$ reach from 0.4 to 1.0 with an average value of 0.8. The similarity of masses suggests that these high-mass binaries were created during the star formation process rather than by tidal capture.

29 pages, 17 figures, accepted for publication in MNRAS

References in corpus (46)

• Gaia Data Release 2. Summary of the contents and survey properties
• The SIMBAD astronomical database
• Binary interaction dominates the evolution of massive stars
• Evolution of binary stars and the effect of tides on binary populations
• Shrinking binary and planetary orbits by Kozai cycles with tidal friction
• Stellar Multiplicity
• The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)
• A new calibration of stellar parameters of Galactic O stars
• The VLT-FLAMES Tarantula Survey VIII. Multiplicity properties of the O-type star population
• The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
• Radiation-Hydrodynamic Simulations of Collapse and Fragmentation in Massive Protostellar Cores
• The incidence of stellar mergers and mass gainers among massive stars
• A spectroscopic survey on the multiplicity of high-mass stars
• The VAST Survey - III. The multiplicity of A-type stars within 75 pc
• UBVRI Photometric Standard Stars Around the Celestial Equator: Updates and Additions
• The Formation of Close Binary Systems by Dynamical Interactions and Orbital Decay
• Toward Complete Statistics of Massive Binary Stars: Penultimate Results from the Cygnus OB2 Radial Velocity Survey
• A census of the Wolf-Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy
• The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turn-offs. II. Results from 12 Galactic Clusters and OB Associations
• Comparative statistics and origin of triple and quadruple stars
• The Galactic O-Star Spectroscopic Survey (GOSSS). III. 142 additional O-type systems
• The VLT-FLAMES Tarantula Survey XXII. Multiplicity properties of the B-type stars
• Limits on the primordial stellar multiplicity
• The Extended Environment of M17: A Star Formation History
• Masses and Luminosities of O and B - type stars and red super giants
• On the properties of young multiple stars
• Spectroscopic analysis of southern B and Be stars
• Star formation and disk properties in Pismis 24
• Distance and the Initial Mass Function of Young Open Clusters In The Eta Carina Nebula: Tr 14 and Tr 16
• New Estimates of the Solar-Neighborhood Massive-Stars Birthrate and the Galactic Supernova Rate
• An X-ray Census of Young Stars in the Massive Southern Star-Forming Complex NGC 6357
• Binary and Multiple O-Type Stars in the Cas OB6 Association
• Ultra-short Period Binaries from the Catalina Surveys
• XMM-Newton X-ray study of early type stars in the Carina OB1 association
• Optical spectroscopy of X-Mega targets in the Carina Nebula. II. The massive double-lined O-type binary HD 93205
• A Spectroscopic Study of Field and Runaway OB Stars
• Predicting Gaia's Parallax Distance to the Cygnus OB2 Association with Eclipsing Binaries
• The Bochum Survey of the Southern Galactic Disk: II. Follow-up measurements and multi-filter photometry for 1323 square degrees monitored in 2010-2015
• Tomographic Separation of Composite Spectra. X. The Massive Close Binary HD 101131
• Optical Spectroscopy of X-Mega targets in the Carina Nebula - VI. FO 15: a new O-Type double-lined eclipsing binary
• Improved Variable Star Search in Large Photometric Data Sets -- New Variables in CoRoT Field LRa02 Detected by BEST II
• Physical properties of seven binary and higher-order multiple OB systems
• Optical spectroscopy of X-Mega targets in the Carina Nebula - V. The spectroscopic binary HD93161A and its visual companion HD93161B
• Eclipsing binary statistics - theory and observation
• Eclipsing high-mass binaries I. Light curves and system parameters for CPD-518946, PISMIS24-1 and HD319702
• Fast rotating stars resulting from binary evolution will often appear to be single

Cited by in corpus (10)

• MONOS.II. Orbit review and analysis for 35 single-lined spectroscopic binary systems and candidates
• The IACOB project VIII. Searching for empirical signatures of binarity in fast-rotating O-type stars
• Dissecting the microphysics behind the metallicity-dependence of massive stars radii
• The multiplicity of massive stars in the Scorpius OB1 association through high-contrast imaging
• Probing the low-mass end of the companion mass function for O-type stars
• Searching for compact objects in the single-lined spectroscopic binaries of the young Galactic cluster NGC 6231
• New Massive Contact Twin Binary in a Radio-quiet HII Region Associated with the M17 Complex
• The observed multiplicity properties of B-type stars in the Galactic young open cluster NGC 6231
• The YMDB catalog: Young massive detached binaries for the determination of high-precision absolute stellar parameters
• The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release