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SUMMARY:High Contrast Studies of Nearby Stars with Project 1640 - Neil Zim
 merman (AMNH)
DTSTART:20100217T134500Z
DTEND:20100217T141500Z
UID:TALK22837@talks.cam.ac.uk
CONTACT:Dr Jonathan Gair
DESCRIPTION:Project 1640 is a new integral field spectrograph and coronagr
 aph at Palomar Observatory. I will demonstrate the capabilities of this ne
 w instrument by reviewing one of our first results\, the discovery of an M
 -dwarf companion to Alcor\, a main sequence A star at a distance of 25 pc.
  We confirmed the physical association between the stars using a novel met
 hod of high precision relative astrometry applied to two images taken just
  100 days apart\, demonstrating that the companion shares common parallact
 ic and proper motion with its host star. The same data gave us a low-resol
 ution near-infrared spectrum spanning the J and H bands\, enabling us to c
 lassify the companion as an M3-M4 dwarf.
LOCATION:Sackler Lecture Theatre\, IoA
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