Astrophysical: Spectroscopy

  • 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
    CN and CH line strengths in 12 globulars (Pancino+, 2010)
    In this first paper, we measured the strength of the CN and CH band indices, which correlate with the N and C abundances, and we investigated the anti...
  • Publication
    Comparison of optical spectra between asteroids Ryugu and Bennu: II. High-precision analysis for space weathering trends
    Various natural effects gradually alter the surfaces of asteroids exposed to the space environment. These processes are collectively known as space weathering...
  • Publication
    Confirming the Metal-Rich Nature of Stars with Giant Planets
    With the goal of confirming the metallicity ``excess'' observed in stars with planetary mass companions, we have conducted a high-precision spectroscopic study...
  • Publication
    Counterrotating cores in elliptical galaxies
    The dynamics of the merger between a high- and a low-elliptical galaxy was studied to understand how kinematically peculiar cores in elliptical galaxies might...
  • Publication
    Detection of Flare-induced Plasma Flows in the Corona of EV Lac with X-Ray Spectroscopy
    Stellar flares are characterized by sudden enhancement of electromagnetic radiation from the atmospheres of stars. Compared to their solar counterparts, our...
  • News
    Didier Queloz, Physics Nobel Prize Winner 2019, Is Developing an Advanced Terrestrial Planet Hunter for the Isaac Newton Telescope
    The Isaac Newton Group of Telescopes (ING) and the Institute of Astrophysics of the Canary Islands (IAC) warmly congratulate James Peebles (Princeton University...
  • Publication
    Discovery of a binary quasar at z = 1.76
    We present the serendipitous discovery of a physical pair of quasars with estimated cosmological redshift z = 1.76. Long-slit spectroscopic observations 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...