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Euclid ASTEROSEISMOLOGY AND KUIPER BELT OBJECTS

  • GOULD, ANDREW ;
  • HUBER, DANIEL ;
  • STELLO, DENNIS
  • Received : 2015.04.27
  • Accepted : 2015.12.20
  • Published : 2016.02.29

Abstract

Euclid, which is primarily a dark-energy/cosmology mission, may have a microlensing component, consisting of perhaps four dedicated one-month campaigns aimed at the Galactic bulge. We show that such a program would yield excellent auxilliary science, including asteroseismology detections for about 100 000 giant stars, and detection of about 1000 Kuiper Belt Objects (KBOs), down to 2-2.5 mag below the observed break in the KBO luminosity function at I ∼ 26. For the 400 KBOs below the break, Euclid will measure accurate orbits, with fractional period errors ≲ 2.5%.

Keywords

astrometry;gravitational microlensing;stars:oscillations;Kuiper belt

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