Present and forthcoming ground-based and space surveys of the T Tauri stars in the Taurus molecular cloud will provide information from high energy stellar and accretion radiation to low energy solid state and molecular emission from the disk, making those stars perfect laboratories to carry out self-consistent studies of disk physics and evolution. We propose to complete this wealth of information by obtaining ACS/FUV spectra for a significant sample of Taurus T Tauri stars, covering a range of accretion properties and dust evolutionary stages. FUV fluxes carry ~ 10 - 100 more energy than X-rays into these disks and are thus crucial gas heating agents and key to disk dispersal by photoevaporation. These observations are a pre-requisite to interpret observations with Spitzer, SOFIA, Herschel, and ALMA, and will become one of the important legacies of HST to the star formation community.

For each object, we will obtain an FUV spectrum and a brief FUV image for wavelength calibration. For five objects, we will also obtain NUV and optical spectra and brief images (with the F330W and F606W filters) for wavelength calibration. For each NUV and optical spectrum, we include a short (4-10s) and a long (60-100s) integration times to accurately obtain images for bright spectral regions, which will saturate, and faint spectral regions, which require longer exposure times. STAR FORMATION 12 false 0.0 false false false false false false SUPPORTED STAR T TAURI STAR J2000 04 47 5.4800 +16 58 42.10 J2000 STAR T TAURI STAR J2000 04 35 27.3700 +24 14 59.50 J2000 STAR T TAURI STAR J2000 04 33 34.5600 +24 21 5.90 J2000 STAR T TAURI STAR J2000 04 33 51.9900 +22 50 30.60 J2000 STAR T TAURI STAR J2000 04 32 42.9700 +25 52 31.70 J2000 STAR T TAURI STAR J2000 04 38 28.5900 +26 10 50.30 J2000 STAR T TAURI STAR J2000 04 21 55.5700 +27 55 7.00 J2000 STAR T TAURI STAR J2000 04 42 37.2000 +25 15 31.00 J2000 STAR T TAURI STAR J2000 04 24 57.0800 +27 11 56.60 J2000 STAR T TAURI STAR J2000 04 14 13.4400 +28 12 51.10 J2000 STAR T TAURI STAR J2000 04 14 48.0000 +26 48 24.00 J2000 STAR T TAURI STAR J2000 04 14 47.0000 +26 46 30.00 J2000 STAR T TAURI STAR J2000 04 34 55.4500 +24 28 53.70 J2000 STAR T TAURI STAR J2000 04 33 39.3600 +17 51 52.30 J2000 STAR T TAURI STAR J2000 04 33 39.0200 +25 20 38.90 J2000 ACS/SBC Spectroscopic No No PR130L ACS/HRC Spectroscopic No No PR200L 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