Accretion in the planet-forming disks of the TW Hya association

Details Accretion in the planet-forming disks of the TW Hya association Accretion in the planet-forming disks of the TW Hya association

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9081c&link_type=abstract

HST Proposal ID #9081

Astronomy and Astrophysics

Astronomy

Hst Proposal Id #9081 Star Formation

Scientific paper

We propose to obtain STIS/MAMA high signal-to-noise, low resolution ultraviolet spectra of the only two stars in the ~ 10 Myr old TW Hya association that are still accreting to measure the mass accretion rate through their disks. With these measurements we will be able to assess the gas content in these disks which show clear signs that dust is rapidly evolving towards planetesimals and planets, and obtain crucial parameters to address the problems of planet migration and survival at 10 Myr, the time-scale for planet formation according to meteoritic and preliminary astronomical evidence.

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