Substellar Mass Companions to Nearby Young Stars

Details Substellar Mass Companions to Nearby Young Stars Substellar Mass Companions to Nearby Young Stars

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop...34f&link_type=abstract

Spitzer Proposal ID #34

Computer Science

Scientific paper

Seventy-three nearby (d < ~30 pc), young dwarfs with types ranging from A0V to M4.5V will be observed with IRAC to detect companions with masses as low as 5 - 20 M_Jup. The advantage of observing targets which are young is that substellar mass companions will also be young and therefore much more luminous than their cooler counterparts found around older stars in the field. The targets in this program have been selected from the literature using multiple indicators of youth (age < 120 Myr) including high X-ray luminosity, high chromospheric activity levels, high Li abundance, rapid rotation, photometric colors consistent with youth (when combined with theoretical isochrones), and young disk kinematics. This volume-limited sample will allow us to search for companions on distance scales of 50 AU to 4000 AU from the primary.

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