Astrophysical: Binary stars

  • Publication
    Circumstellar matter around the RS CVn system II Peg
    The RS CVn noneclipsing system II Peg has been observed in the J, H, K, L, and M infrared bands along a complete period. The shape of the light curve shows an...
  • Publication
    Close Binary Companions to APOGEE DR16 Stars: 20,000 Binary-star Systems Across the Color-Magnitude Diagram
    Many problems in contemporary astrophysics—from understanding the formation of black holes to untangling the chemical evolution of galaxies—rely on knowledge...
  • Publication
    Constraints to the masses of brown dwarf candidates form the lithium test
    We present intermediate dispersion (0.7-2.2 A/pixel) optical spectroscopic observations aimed at applying the 'lithium test' to a sample of 10 brown dwarf...
  • Publication
    Determination of temperatures and angular diameters of 114 F-M stars using the infrared flux method (IRFM)
    Temperatures and angular diameters are derived for 114 F-M stars using the infrared flux (IRFM) method and initially both the Vega flux calibrations of Dreiling...
  • Publication
    Discovery of a widely separated binary system of very low mass stars
    We report our discovery of a nearby wide binary system, LP 714-37 AB. Phan-Bao et al. identified LP 714-37 as a mid-M dwarf during a cross-identification of the...
  • Publication
    Double-lined Spectroscopic Binaries in the APOGEE DR16 and DR17 Data
    APOGEE spectra offer ≲1 km s -1 precision in the measurement of stellar radial velocities. This holds even when multiple stars are captured in the same spectrum...
  • Conference
    Eclipsing Binaries and Asteroseismology
    With numerous active or recently completed public, space-based missions and ground-based follow-up surveys, never before has such a wealth of high-quality and...
  • Publication
    Evidence for Evolved Stellar Binary Mergers in Observed B-type Blue Supergiants
    Blue supergiants are the brightest stars in their host galaxies, and yet their evolutionary status has been a long-standing problem in stellar astrophysics. In...
  • Publication
    Formulation of stellar speckle interferometry in terms of joint spatial/spatial-frequency representations
    A generalized formulation of stellar speckle interferometry (SSI) and related techniques in terms of joint spatial/spatial-frequency energy representations are...