Journal: The Astrophysical Journal

  • Publication
    Qualitative Interpretation of Galaxy Spectra
    We describe a simple step-by-step guide to qualitative interpretation of galaxy spectra. Rather than an alternative to existing automated tools, it is put...
  • Publication
    Quantifying Resonant Structure in NGC 6946 from Two-dimensional Kinematics
    We study the two-dimensional kinematics of the Hα-emitting gas in the nearby barred Scd galaxy NGC 6946, in order to determine the pattern speed of the primary...
  • Publication
    Quantifying Star Formation Activity in the Inner 1 kpc of Local MIR Bright QSOs
    We examine star formation activity in a distant (z 0.1) and flux-limited sample of quasars (QSOs). Midinfrared (MIR) spectral diagnostics at high spatial...
  • Publication
    Quantitative Morphology of Galaxies in the Core of the Coma Cluster
    We present a quantitative morphological analysis of 187 galaxies in a region covering the central 0.28 deg2 of the Coma Cluster. Structural parameters from the...
  • Publication
    Quantitative Spectral Analysis of Early B-Type Supergiants in the Sculptor Galaxy NGC 300
    The spectra of two early B-type supergiant stars in the Sculptor spiral galaxy NGC 300 are analyzed by means of non-LTE line-blanketed unified model atmospheres...
  • Publication
    Quasars as a Tracer of Large-scale Structures in the Distant Universe
    We study the dependence of the number density and properties of quasars on the background galaxy density using the currently largest spectroscopic data sets of...
  • Publication
    Quenching as a Contest between Galaxy Halos and Their Central Black Holes
    Existing models of galaxy formation have not yet explained striking correlations between structure and star formation activity in galaxies, notably the sloped...
  • Publication
    QUEST1 Variability Survey. II. Variability Determination Criteria and 200k Light Curve Catalog
    The QUEST (QUasar Equatorial Survey Team) Phase 1 camera has collected multibandpass photometry on a large strip of high Galactic latitude sky over a period of...
  • Publication
    Quiet Sun Center to Limb Variation of the Linear Polarization Observed by CLASP2 Across the Mg II h and k Lines
    The CLASP2 (Chromospheric LAyer Spectro-Polarimeter 2) sounding rocket mission was launched on 2019 April 11. CLASP2 measured the four Stokes parameters of the...