Journal: The Astrophysical Journal

  • Publication
    Limitations of the Ca II 8542 Å Line for the Determination of Magnetic Field Oscillations
    Chromospheric umbral oscillations produce periodic brightenings in the core of some spectral lines, known as umbral flashes. They are also accompanied by...
  • Publication
    Limiting the Abundance of LIGO/Virgo Black Holes with Microlensing Observations of Quasars of Finite Size
    We present a simple but general argument that strongly limits the abundance of primordial black holes (PBHs) (or other unknown population of compact objects)...
  • Publication
    Limits on Hot Intracluster Gas Contributions to the Tenerife Temperature Anisotropy Map
    We limit the contribution of the hot intracluster gas, by means of the Sunyaev-Zeldovich effect, to the temperature anisotropies measured by the Tenerife...
  • Publication
    Limits on the Hard X-Ray Emission From the Periodic Fast Radio Burst FRB 180916.J0158+65
    FRB 180916.J0158+65 is one of the nearest, periodically repeating, and actively bursting fast radio bursts (FRBs) that has been localized to the outskirts of a...
  • Publication
    Limits on the Spin-Orbit Angle and Atmospheric Escape for the 22 Myr Old Planet AU Mic b
    We obtained spectra of the pre-main-sequence star AU Microscopii during a transit of its Neptune-sized planet to investigate its orbit and atmosphere. We used...
  • Publication
    Line Formation Theory for the Multiterm Atom with Hyperfine Structure in a Magnetic Field
    Within the framework of the quantum theory of polarized line formation, in the limit of complete frequency redistribution and of the collisionless regime, we...
  • Publication
    Line Shape Effects on Intensity Measurements of Solar Features: Brightness Correction to SOHO MDI Continuum Images
    Continuum intensity observations obtained with the Michelson Doppler Imager (MDI) on board the SOHO mission provide long time series of filtergrams that are...
  • Publication
    LINER-like Extended Nebulae in ULIRGs: Shocks Generated by Merger-Induced Flows
    In this work we studied the two-dimensional ionization structure of the circumnuclear and extranuclear regions in a sample of six low-z ultraluminous infrared...
  • Publication
    Lithium Abundances in nearby FGK Dwarf and Subgiant Stars: Internal Destruction, Galactic Chemical Evolution, and Exoplanets
    We derive atmospheric parameters and lithium abundances for 671 stars and include our measurements in a literature compilation of 1381 dwarf and subgiant stars...