Astrophysical: Comets

  • Publication
    The dust tail of Comet C/1999 T1 McNaught-Hartley
    A numerical method to compute cometary dust tail brightnesses has been developed. The method, analogous in many ways to the inverse Monte Carlo method proposed...
  • Publication
    The Effect of Seeing Variations in Time-Series CCD Inner Coma Photometry of Comets: A New Correction Method
    Time series CCD photometry of the inner coma of active comets has been used over the last twenty years to determine the rotation period of their nucleus...
  • Publication
    The First Post-Kepler Brightness Dips of KIC 8462852
    We present a photometric detection of the first brightness dips of the unique variable star KIC 8462852 since the end of the Kepler space mission in 2013 May...
  • News
    The Gran Telescopio Canarias obtains the visible spectrum of C/2019 Q4 (Borisov), the first confirmed interstellar comet
    The spectrum acquired by GTC of interstellar comet C/2019 Q4 (Borisov) reveals that this object has a surface composition not unlike that found in Solar System...
  • Publication
    The nature of comet-asteroid transition object (3200) Phaethon
    Context: The study of asteroids that present sporadic cometary activity is of fundamental importance to address several astronomical problems including the end...
  • Publication
    The population, magnitudes, and sizes of Jupiter family comets
    We analyze the sample of measured nuclear magnitudes of the observed Jupiter family (JF) comets (taken as those with orbital periods P 20 years and Tisserand...
  • Publication
    The Rotation Period of C/1995 01 (Hale-Bopp)
    C/1995 O1 (Hale-Bopp) was observed in daylight on 16 days between 1997 April 1 and 1997 April 28, five of which had long time sequences (up to 10 hr of data)...
  • Publication
    The Rotation Period of C/2014 Q2 (Lovejoy)
    C/2014 Q2 (Lovejoy) was observed around perihelion (2015 January 30) on 15 nights between 2015 January 21 and February 11 using the TADer 0.3-m astrograph...
  • Publication
    The Round Table Discussion: How Should We Take Best Advantage of the New Generation of Large Telescopes for Cometary Research?
    The highlights of the round table discussion held to discuss the most important pending problems in cometary astrophysics are reported. A number of experts...