Target of Opportunity: New Observable Transiting Extrasolar Planets

Details Target of Opportunity: New Observable Transiting Extrasolar Planets Target of Opportunity: New Observable Transiting Extrasolar Planets

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30129h&link_type=abstract

Spitzer Proposal ID #30129

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Scientific paper

We propose a Legacy Target of Opportunity (TOO) program to observe transits and eclipses of new extrasolar planets. These measurements provide the most accurate planetary radii and the only emission fluxes possible with current telescopes for extrasolar planets; the next opportunity for the latter is with JWST. Radii and band fluxes constrain models of composition, chemistry, and atmospheric dynamics. They also provide the basic information needed for follow-on work. Since the spacecraft has a limited lifetime, rapid characterization is crucial. Transiting extrasolar planets are among the least anticipated and most productive targets for Spitzer. They are also among the most publicly stimulating. Five Discretionary Time proposals have been approved on this topic, and four have been accepted. Our goal is thus to bring this process into the TAC system while keeping these high-impact data public for everyone. We request 14 6-hour events, including 2 medium-impact TOOs. This is sufficient to cover all six accessible photometric bandpasses in eclipse and one event in transit for up to two planets. We anticipate that fewer will be used, based on discovery statistics. We provide quantitative criteria for activating TOOs. Our archival product will be calibrated lightcurves, to be submitted as electronic attachments with journal articles and archived with the Planetary Data System.

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