Publication type: Refereed

  • Publication
    The Low Metallicity Tail of the Halo Metallicity Distribution Function
    Ongoing spectroscopy and photometry of stars selected in the HK objective-prism/interference-filter survey of Beers and colleagues has resulted in the...
  • Publication
    The Low Redshift survey at Calar Alto (LoRCA)
    The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to measure the accelerated expansion of the Universe...
  • Publication
    The low-excitation structures of planetary nebulae
    The low excitation properties of the planetary nebula (PN) NGC 6720 are known to be unusual, and to imply large ring/core emission ratios. We point out that...
  • Publication
    The low-luminosity accretion disc wind of the black hole transient V4641 Sagittarii
    We present an optical spectroscopic study of the black hole X-ray transient V4641 Sgr (=SAX J1819.3-2525) covering the 1999, 2002, and 2004 outbursts. The...
  • Publication
    The Low-Redshift Quasar-Quasar Correlation Function from an Extragalactic Hα Emission-Line Survey to z=0.4
    We study the large-scale spatial distribution of low-redshift quasars and Seyfert 1 galaxies using a sample of 106 luminous emission-line objects (MB~-23)...
  • Publication
    The Lowest Mass White Dwarf
    Extremely low mass white dwarfs are very rare objects likely formed in compact binary systems. We present MMT optical spectroscopy of 42 low-mass white dwarf...
  • Publication
    The LSPE-Strip beams
    In this paper we describe the design and characterization of the optical system of LSPE/Strip, a coherent polarimeter array that will observe the microwave sky...
  • Publication
    The luminosity function evolution of soft X-ray-selected active galactic nuclei in the RIXOS survey
    A sample of 198 soft X-ray-selected active galactic nuclei (AGN) from the ROSAT International X-ray Optical Survey (RIXOS) is used to investigate the X-ray...
  • Publication
    The luminosity function of stars in the intermediate age open cluster NGC 7789
    We report the results of a CCD investigation of stars in a selected region near the center of the intermediate age galactic cluster NGC 7789. A CM diagram is...