Radial Velocity Follow-ups of Potential Planet Candidates in the SDSS Planet Survey

Details Radial Velocity Follow-ups of Potential Planet Candidates in the SDSS Planet Survey Radial Velocity Follow-ups of Potential Planet Candidates in the SDSS Planet Survey

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007noao.prop..420g&link_type=abstract

NOAO Proposal ID #2007B-0420

Computer Science

Scientific paper

We propose to follow up 36 potential short period (P < 1 month) planet candidates around F, G and K dwarfs and subdwarfs with V=8.5- 11.5 using the Exoplanet Tracker (ET) Doppler instrument at the KPNO 2.1m telescope (for 25 V<11.2 stars) and HRS on the HET telescope (for 11 V=11.2-11.5 stars). All of these candidates show radial velocity (RV) variations with an amplitude less than 1000 m/s within 15 days. All of the candidates were identified from a total of 750 survey stars from the on-going pilot planet survey using a multi-object instrument, Keck ET, at the 2.5m Sloan Digital Sky survey (SDSS) telescope from May 2006 to March 2007. Our goal is to confirm and characterize ~6 short period planets and ~1 transit planet over the next observation semester. The combination of the multi-object RV planet survey with single object instrument follow-ups will potentially increase the RV planet detection speed by an order of magnitude over current single object RV planet surveys. With a much larger target star sample (~40,000 stars) from the SDSS pilot survey plus its following full-scale planet survey in 2008-2014, we can study exoplanets in a diverse set of host stars (e.g., composition, evolutionary state) and discover rare systems that are poorly represented in smaller surveys.

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