Journal: The Astrophysical Journal

  • Publication
    (596) Scheila in Outburst: A Probable Collision Event in the Main Asteroid Belt

    Images of asteroid (596) Scheila have been acquired at various dates after the discovery of the 2010 outburst. Assuming a short-duration event scenario, as...

  • Publication
    2MASS J17112318-2724315: A Deeply Embedded Low-mass Protostellar System in the B59 Molecular Cloud

    We present near-infrared observations of the low-mass deeply embedded Class 0/I system 2MASS J17112318-2724315 (2M171123) in the B59 molecular cloud. Bright...

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    47 Tucanae: The Spectroscopic versus Color-Magnitude Diagram Age Discrepancy

    We investigate current problems in obtaining reliable ages for old stellar systems based on stellar population synthesis modeling of their integrated spectra...

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    A 2MASS All-Sky View of the Sagittarius Dwarf Galaxy. V. Variation of the Metallicity Distribution Function along the Sagittarius Stream

    We present reliable measurements of the metallicity distribution function (MDF) at different points along the tidal stream of the Sagittarius (Sgr) dwarf...

  • Publication
    A Case against a Significant Detection of Precession in the Galactic Warp

    Recent studies of warp kinematics using Gaia DR2 data have produced detections of warp precession for the first time, which greatly exceeds theoretical...

  • Publication
    A cold massive interstellar cloud within 120 parsecs of the Sun: K I optical and H I radio observations

    We first discovered the presence of a particularly massive cloud in the neighborhood of the Sun, close to the Galactic plane in the direction of Perseus, toward...

  • Publication
    A Comprehensive View of a Strongly Lensed Planck-Associated Submillimeter Galaxy

    We present high-resolution maps of stars, dust, and molecular gas in a strongly lensed submillimeter galaxy (SMG) at z = 3.259. HATLAS J114637.9-001132 is...

  • Publication
    A Consistency Test of Spectroscopic Gravities for Late-Type Stars

    Chemical analyses of late-type stars are usually carried out following the classical recipe: LTE line formation and homogeneous, plane-parallel, flux-constant...

  • Publication
    A Constraint on Brown Dwarf Formation Via Ejection: Radial Variation of the Stellar and Substellar Mass Function of the Young Open Cluster IC 2391

    We present the stellar and substellar mass function (MF) of the open cluster IC 2391, plus its radial dependence, and use this to put constraints on the...