Journal: The Astrophysical Journal

  • Publication
    The Central Engine of Low-luminosity Radio Galaxy 3C 270 (NGC 4261)
    We present the polarization spectra of the nucleus of 3C 270. We confirm that the polarization angles of both the continuum and the emission lines are close to...
  • Publication
    The Central Mass Distribution in Dwarf and Low Surface Brightness Galaxies
    We present high-resolution Hα rotation curves for a sample of 15 dwarf and low surface brightness galaxies. From these we derive limits on the slopes of the...
  • Publication
    The Central Star of NGC 2346 as a Clue to Binary Evolution through the Common Envelope Phase
    We present an analysis of the binary central star of the planetary nebula NGC 2346 based on archival data from the International Ultraviolet Explorer, and new...
  • Publication
    The Challenge of Wide-Field Transit Surveys: The Case of GSC 01944-02289
    Wide-field searches for transiting extrasolar giant planets face the difficult challenge of separating true transit events from the numerous false positives...
  • Publication
    The Chandra Planetary Nebula Survey (CHANPLANS). II. X-Ray Emission from Compact Planetary Nebulae
    We present results from the most recent set of observations obtained as part of the Chandra X-ray observatory Planetary Nebula Survey (CHANPLANS), the first...
  • Publication
    The Chandra Planetary Nebula Survey (ChanPlaNS). III. X-Ray Emission from the Central Stars of Planetary Nebulae
    We present X-ray spectral analysis of 20 point-like X-ray sources detected in Chandra Planetary Nebula Survey observations of 59 planetary nebulae (PNe) in the...
  • Publication
    The Changing Rotational Light-curve Amplitude of Varuna and Evidence for a Close-in Satellite
    From CCD observations carried out with different telescopes, we present short-term photometric measurements of the large trans-Neptunian object Varuna in 10...
  • Publication
    The Changing-look Optical Wind of the Flaring X-Ray Transient Swift J1858.6-0814
    We present the discovery of an optical accretion disk wind in the X-ray transient Swift J1858.6-0814. Our 90-spectrum data set, taken with the 10.4 m Gran...
  • Publication
    The Chemical Abundances of Tycho G in Supernova Remnant 1572
    We present an analysis of the chemical abundances of the star Tycho G in the direction of the remnant of supernova (SN) 1572, based on Keck high-resolution...