adding a same orient link, will this work this year? use fgs3 ----- Attempting Submission 1 (Wed Jul 06 12:54:39 GMT 2011) ----- ----- Attempting Submission 2 (Thu Sep 29 12:16:56 GMT 2011) ----- HST Phase II Proposal 12674 (12674.apt) successfully submitted. ----- Attempting Submission 3 (Thu Sep 29 13:31:01 GMT 2011) ----- The young Galactic remnant Cas A provides perhaps our clearest look at the explosion of a high mass, core-collapse supernova. Two seemingly opposing streams or "jets" of high-velocity debris extending outward along its northeastern and southwestern limbs have expansion velocities more than twice that of the remnant's bright main shell. Interpretation of these jets has been controversial mainly based on energy considerations. However, SN debris located at the farthest tip of the NE jet is S-rich suggesting an origin deep inside the progenitor due to an overturning of layers as predicted in some aspherical explosion models. If similar ejecta were also found present in the SW jet's outermost knots, it would be strong evidence in support of an asymmetric explosion of Cas A and in turn for CCSNe in general. Unfortunately, substantial extinction toward both jets has prevented a thorough investigation of their properties and, in particular, whether they constitute a true bipolar outflow. We propose to use the WFC3/IR channel in 5 CVZ orbits to obtain a deep imaging survey of Cas A's jets to probe their true extent and structure. The combination of WFC3's high throughput at the [S II] 10287-10370 and [S III] 9069, 9531 emission lines, a pixel scale well matched to typical jet knot sizes, and decreased extinction at 1 micron will dramatically improve jet knot detections over prior ACS/WFC images. Follow-up observations in Cycle 19 will allow robust knot identification via proper motions, and KPNO 4m near-IR spectroscopy will provide knot radial velocities. Our goal is to develop a thorough 3D kinematic and chemical map of Cas A's jets which will constrain their nature and relationship to the remnant's main spherical shell of ejecta.

The goal is to image both outer NE and SW ejecta "jets" (high-velocity streams of SN debris) in the Cas A supernova remnant, as well as part of the main shell. ISM AND CIRCUMSTELLAR MATTER 12 false 0.0 4.0 false false false false SUPPORTED ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 ISM EJECTA SNR J2000 J2000 WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F098M POS-TARG DITHER 0.572 LINE 0.365 false false 74.653 4 18.528 WFC3-IR-DITHER-BOX-MIN 1 false 1309903876618 The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. please schedule at U3=112 (Tic-Visit :proposal-id 12674 :visit-id "01" :proposal-version -1 :trans-version "20110509" :date "05-Jul-2011 18:11:15.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 5501184 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12674 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 12674 :visit-id "01" :obset-id "A1" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 12674 :visit-id "01" :obset-id "B1" :pcs-mode "FGS" ) (Tic-Orbit :cvz T :proposal-id 12674 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 16188 :al-overhead-at-end 0 :internal-dur-at-end 464 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 0 :low-sky "N" :pcs-visibility 0 :pcs-gap 0 ) false 3 0 1309802024495 The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. please schedule at U3 112-112.5 (Tic-Visit :proposal-id 12674 :visit-id "02" :proposal-version -1 :trans-version "20110509" :date "04-Jul-2011 13:53:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 3551392 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12674 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 12674 :visit-id "02" :obset-id "A2" :pcs-mode "FGS" ) (Tic-Orbit :cvz T :proposal-id 12674 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 10265 :al-overhead-at-end 0 :internal-dur-at-end 711 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 0 :low-sky "N" :pcs-visibility 0 :pcs-gap 0 ) false 2 0