Assigned ID: 609 ----- Attempting Submission 1 (Fri Feb 25 20:44:51 GMT 2011) ----- HH 30 is an edge-on young stellar object disk with highly collimated emission line jets outflowing along its polar axis. As a prototype of its class (and of astrophysical accretion disks generally), the object has been the subject of extensive study with HST. Thirteen HST programs have imaged on the object at nineteen epochs over the period 1994-2008; thirteen refereed papers have used this data to report on the disk structure, the jet structure, and the outflows from adjacent sources XZ Tauri and HL Tauri. Yet surprisingly, no comprehensive study has yet been made of the HH 30 jet proper motions treating more than just two epochs of observation. We propose to investigate the kinematics and structural evolution of the HH 30 protostellar jet over all 15 epochs for which there are Archival R band continuum and emssion line images taken by WFPC2 and ACS. We will track the astrometric and morphological evolution of a dozen emission knots in the jet, thereby measuring their velocities, accelerations, expansion, mergers, and luminosity evolution. The results will provide strong constraints for models of the propagation of astrophysical jets with Mach numbers near 20.

STAR FORMATION 12 Small false 0.0 0.0 false false false false SUPPORTED 03 28 57.0000 +31 16 22.00 J2000 R= 18.2 03 29 24.1000 +31 19 57.00 J2000 J= 15.5 03 20 27.1000 +30 28 29.00 J2000 J= 15 04 19 41.4000 +27 16 7.00 J2000 J= 14.7 04 20 21.4000 +28 13 49.00 J2000 J= 15.8 04 22 15.6000 +26 57 6.00 J2000 R= 17.1 04 23 7.7000 +28 05 57.00 J2000 R= 16.2 04 30 4.3000 +35 22 23.00 J2000 04 30 32.4000 +35 22 23.00 J2000 04 33 14.3000 +26 14 23.00 J2000 J= 14.6 04 39 5.2000 +23 37 45.00 J2000 J= 13.4 11 04 22.7000 -77 18 8.00 J2000 R= 16 11 08 24.1000 -77 44 7.00 J2000 11 09 26.1000 -76 33 33.00 J2000 11 10 3.4000 -76 33 11.00 J2000 J= 15.6 11 11 10.7000 -76 41 57.00 J2000 16 08 51.4000 -39 05 30.00 J2000 I= 18.2 16 10 27.4000 -39 02 30.00 J2000 I= 19.3 16 31 36.8000 -24 04 19.00 J2000 J= 15.7 19 10 43.4000 -36 59 9.00 J2000 R= 16.9 22 38 44.0000 +75 11 26.00 J2000 J= 13.5 ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W ACS/WFC Imaging No No F814W ACS/WFC Imaging No No F606W