Journal: The Astrophysical Journal

  • Publication
    A logNHI = 22.6 Damped Lyα Absorber in a Dark Gamma-Ray Burst: The Environment of GRB 050401
    The optical afterglow spectrum of GRB 050401 (at z=2.8992+/-0.0004) shows the presence of a damped Lyα absorber (DLA), with logNHI=22.6+/-0.3. This is the...
  • Publication
    A Long Time Ago in a Galaxy Far, Far Away: A Candidate z 12 Galaxy in Early JWST CEERS Imaging
    We report the discovery of a candidate galaxy with a photo-z of z ~ 12 in the first epoch of the James Webb Space Telescope (JWST) Cosmic Evolution Early...
  • Publication
    A Mass Model for the Lensing Cluster SDSS J1004+4112: Constraints from the Third Time Delay
    We have built a new model for the lens system SDSS J1004+4112 including the recently measured time delay of the fourth quasar image. This time delay has a...
  • Publication
    A Massive Cluster of Red Supergiants at the Base of the Scutum-Crux Arm
    We report on the unprecedented red supergiant (RSG) population of a massive young cluster, located at the base of the Scutum-Crux Galactic arm. We identify...
  • Publication
    A Methane, Isolated, Planetary-Mass Object in Orion
    We report on the discovery of a free-floating methane dwarf toward the direction of the young star cluster σ Ori. Based on the object's far-red, optical, and...
  • Publication
    A Misfired Outburst in the Neutron Star X-Ray Binary Centaurus X-4
    We report on a long-term optical monitoring of the neutron star X-ray binary Centaurus X-4 performed during the last 13.5 yr. This source has been in quiescence...
  • Publication
    A Morphological Type Dependence in the μ0-log h Plane of Spiral Galaxy Disks
    We present observational evidence for a galaxy ``type'' dependence to the location of a spiral galaxy's disk parameters in the μ0-logh plane. With a sample of...
  • Publication
    A Multi-epoch, Multiwavelength Study of the Classical FUor V1515 Cyg Approaching Quiescence
    Historically, FU Orionis-type stars are low-mass, pre-main-sequence stars. The members of this class experience powerful accretion outbursts and remain in an...
  • Publication
    A Multiwavelength Radial Velocity Search for Planets around the Brown Dwarf LP 944-20
    The nearby brown dwarf LP 944-20 has been monitored for radial velocity variability at optical and near-infrared wavelengths using the VLT/UVES and the Keck...