44 New & Known M Dwarf Multiples In The SDSS-III/APOGEE M Dwarf Ancillary Science Sample

Abstract

Binary stars make up a significant portion of all stellar systems. Consequently, an understanding of the bulk properties of binary stars is necessary for a full picture of star formation. Binary surveys indicate that both multiplicity fraction and typical orbital separation increase as functions of primary mass. Correlations with higher order architectural parameters such as mass ratio are less well constrained. We seek to identify and characterize double-lined spectroscopic binaries (SB2s) among the 1350 M dwarf ancillary science targets with APOGEE spectra in the SDSS-III Data Release 13. We measure the degree of asymmetry in the APOGEE pipeline cross-correlation functions (CCFs), and use those metrics to identify a sample of 44 high-likelihood candidate SB2s. At least 11 of these SB2s are known, having been previously identified by Deshapnde et al, and/or El Badry et al. We are able to extract radial velocities (RVs) for the components of 36 of these systems from their CCFs. With these RVs, we measure mass ratios for 29 SB2s and 5 SB3s. We use Bayesian techniques to fit maximum likelihood (but still preliminary) orbits for 4 SB2s with 8 or more distinct APOGEE observations. The observed (but incomplete) mass ratio distribution of this sample rises quickly towards unity. Two-sided Kolmogorov-Smirnov tests and probabilities of 18.3% and 18.7%, demonstrating that the mass ratio distribution of our sample is consistent with those measured by Pourbaix et al. and Fernandez et al., respectively.

arXiv comment27 pages, 11 figures, 7 tables, Accepted for publication in the Astronomical Journal

References in corpus (43)

• emcee: The MCMC Hammer
• The 2.5 m Telescope of the Sloan Digital Sky Survey
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• A Survey of Stellar Families: Multiplicity of Solar-Type Stars
• The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• Shrinking binary and planetary orbits by Kozai cycles with tidal friction
• Stellar Multiplicity
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• The Fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)
• ASPCAP: The Apogee Stellar Parameter and Chemical Abundances Pipeline
• How to Constrain Your M Dwarf: measuring effective temperature, bolometric luminosity, mass, and radius
• SB9: The Ninth Catalogue of Spectroscopic Binary Orbits
• The Formation of Brown Dwarfs as Ejected Stellar Embryos
• The Thirteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-IV Survey MApping Nearby Galaxies at Apache Point Observatory
• The Data Reduction Pipeline for the Apache Point Observatory Galactic Evolution Experiment
• Design Considerations for a Ground-based Transit Search for Habitable Planets Orbiting M dwarfs
• Abundances, Stellar Parameters, and Spectra From the SDSS-III/APOGEE Survey
• A Catalog of Northern Stars With Annual Proper Motions Larger Than 0.15 Seconds of Arc (LSPM catalog - North)
• Target Selection for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• The Stellar Populations of Praesepe and Coma Berenices
• The Formation of Close Binary Systems by Dynamical Interactions and Orbital Decay
• The Formation of Low-Mass Binary Star Systems Via Turbulent Fragmentation
• An All-Sky Catalog of Bright M Dwarfs
• Hubble Space Telescope NICMOS Observations of T Dwarfs: Brown Dwarf Multiplicity and New Probes of the L/T Transition
• Rotation Velocities for M-dwarfs
• White-light flares on cool stars in the Kepler Quarter 1 Data
• Ten Year Review of Queue Scheduling of the Hobby-Eberly Telescope
• Characterizing the Variability of Stars with Early-Release Kepler Data
• UCAC5: New Proper Motions using Gaia DR1
• The M-dwarfs in Multiples (MinMs) survey - I. Stellar multiplicity among low-mass stars within 15 pc
• Discovery and Characterization of 3000+ Main-Sequence Binaries from APOGEE Spectra
• Selection of ThAr lines for wavelength calibration of echelle spectra and implications for variations in the fine-structure constant
• Signatures of unresolved binaries in stellar spectra: implications for spectral fitting
• Chemical Abundances of M-dwarfs from the APOGEE Survey. I. The Exoplanet Hosting Stars Kepler-138 and Kepler-186
• An Upper Bound on the Flux Ratio of rho CrB's Companion at 1.6um
• The SDSS-HET Survey of Kepler Eclipsing Binaries: Spectroscopic Dynamical Masses of the Kepler-16 Circumbinary Planet Hosts
• The SDSS-III APOGEE Radial Velocity Survey of M dwarfs I: Description of Survey and Science Goals
• Exploring the Brown Dwarf Desert: New Substellar Companions from the SDSS-III MARVELS Survey
• IN-SYNC VI. Identification and Radial Velocity Extraction for 100+ Double-Lined Spectroscopic Binaries in the APOGEE/IN-SYNC Fields
• The Close Binary Fraction of Dwarf M Stars
• Measuring the Number of M-Dwarfs per M-Dwarf Using Kepler Eclipsing Binaries
• The Rotation of M Dwarfs Observed by the Apache Point Galactic Evolution Experiment
• Orbital decay of protostellar binaries in molecular clouds

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• The CARMENES search for exoplanets around M dwarfs: Nine new double-line spectroscopic binary stars
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• Data-driven spectroscopic estimates of absolute magnitude, distance and binarity -- method and catalog of 16,002 O- and B-type stars from LAMOST
• A metallicity study of F, G, K and M dwarfs in the Coma Berenices open cluster from the APOGEE survey
• The GALAH survey: Multiple stars and our Galaxy. I. A comprehensive method for deriving properties of FGK binary stars
• Double-lined spectroscopic binaries in the APOGEE DR16 and DR17 data
• Spectroscopic Characterization of LOFAR Radio-emitting M dwarfs