Journal: The Astrophysical Journal

  • Publication
    Systematic Redshift of the Fe III UV Lines in Quasars: Measuring Supermassive Black Hole Masses under the Gravitational Redshift Hypothesis
    We find that the Fe III λλ2039-2113 spectral feature in quasars appears systematically redshifted by amounts accountable under the hypothesis of gravitational...
  • Publication
    Systematic Search for Extremely Metal-poor Galaxies in the Sloan Digital Sky Survey
    We carry out a systematic search for extremely metal-poor (XMP) galaxies in the spectroscopic sample of Sloan Digital Sky Survey (SDSS) data release 7 (DR7)...
  • Publication
    Systematic Search for VHE Gamma-Ray Emission from X-Ray-bright High-Frequency BL Lac Objects
    All but three (M87, BL Lac, and 3C 279) extragalactic sources detected so far at very high energy γ-rays belong to the class of high-frequency-peaked BL Lac...
  • Publication
    Systematic Search for γ-Ray Periodicity in Active Galactic Nuclei Detected by the Fermi Large Area Telescope
    We use nine years of γ-ray data provided by the Fermi Large Area Telescope (LAT) to systematically study the light curves (LCs) of more than 2000 active...
  • Publication
    T-Lyr1-17236: A Long-Period Low-Mass Eclipsing Binary
    We describe the discovery of a 0.68+0.52 Msolar eclipsing binary (EB) with an 8.4 day orbital period, found through a systematic search of 10 fields of the...
  • Publication
    Target Selection and Validation of DESI Quasars
    The Dark Energy Spectroscopic Instrument (DESI) survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range...
  • Publication
    Temperature Bias and the Primordial Helium Abundance Determination
    We study the effect that the temperature structure has on the determination of the primordial helium abundance, Yp. We provide an equation linking T(O III), the...
  • Publication
    Temperature Structure and Metallicity in H II Regions
    The metallicities implied by collisionally excited lines (CELs) of heavy elements in H II regions are systematically lower than those implied by recombination...
  • Publication
    Temporal Evolution of Fine Structures in and around Solar Pores
    Time series of high-resolution white-light images of six solar pores, observed in 1993 and 1995 at the Swedish Vacuum Solar Telescope (La Palma), are analyzed...