0Assigned ID: 930
----- Attempting Submission 1 (Fri Apr 10 22:18:53 GMT 2015) -----
HST Phase I Proposal 930 (Phase1.apt) successfully submitted.
Receipt: # 930-1
----- Attempting Submission 2 (Fri Apr 10 23:44:57 GMT 2015) -----POS TARG OUTSIDE OF APERTURE
POS TARG OUTSIDE OF APERTURE
POS TARG OUTSIDE OF APERTUREWarning that pos targ is outside aperature is ok. Still applies (19 Apr 2017)2073527811----- Attempting Submission 1 (Tue Jul 21 16:32:52 GMT 2015) -----
----- Attempting Submission 3 (Wed Jul 22 12:45:21 GMT 2015) -----
----- Attempting Submission 5 (Mon Nov 09 22:04:09 GMT 2015) -----
----- Attempting Submission 6 (Tue Mar 22 17:12:57 GMT 2016) -----
----- Attempting Submission 8 (Wed Apr 19 15:31:09 GMT 2017) -----This warning is ok - the target is actually the jet near the star, not the star itself. Still applies (19 Apr 2017)True Jet Rotation Probed in NUV Jet CoreRecent observations searching for jet rotation in newly forming stars have the potential to support theories of magneto-centrifugal jet launching. However, whether or not we can claim to observe jet rotation has been hotly debated. Past HST studies have revealed differences across the radial velocity profile of the jet close to the base, but subsequent observations and simulations suggest the outer layers of the jet may be disrupted by shocks or instabilities. On the other hand, the jet core, which is probed at NUV wavelengths, may be protected from these contaminations by the outer jet layers. This idea is supported so far by the fact that the NUV jet rotation direction matches the disk rotation direction in 2 of 2 cases examined. This seems to suggest that NUV data is the only real window on jet rotation, where the signature is not disrupted by other kinematic signatures that may be present in other wavelength regimes. Indeed IR IFU data reveal that the jet kinematics are not simple, and that IFU-style observations are critical in interpreting potential jet rotation signatures. Therefore, we propose STIS/MAMA observations to investigate the jet rotation signature of the jet core in 3 targets. We will map these observations to existing IFU and other data to aid interpretation. Targets are chosen because the sense of disk rotation is already known, and so we can have a definitive answer as to whether we have full agreement in jet and disk rotation sense for the NUV jet core.We request observations on 3 jets: 1 from RY Tau and 2 from DG Tau B. The target is the jet, not the star.
We request the STIS slit placed perpendicular to the jet propagation direction (jet PA), and offset from the star along the jet such that the starlight does not enter the slit.
Please see fig 1 of this paper for a picture of the observing mode required:
http://iopscience.iop.org/0004-637X/663/1/350/pdf/0004-637X_663_1_350.pdf
For RY Tau, the blue jet is at PA=294 (E of N).
The slit should be perpendicular to the jet PA.
i.e. ORIENT = 294+45-90=249 or 294+45+90=69
The slit should then be offset from the star in the direction along the jet.
i.e. POS TARG = (+0.4,0.0) or POS TARG = (-0.4,0.0), depending on the ORIENT value (which in turn depends on guide star availability).
Note that DG Tau B is not optically visible. Hence DG Tau is used as a reference target, and an offset specified to reach DG Tau B.
For DG Tau B, the blue jet is at PA=116 (McGroarty et al 2004, Fig 5) and hence the red jet is at PA=296. Guide star availability dictates ORIENT=71, and Aladdin jet emission dictates optimum POS TARG=+1.3" for the blue jet and -4.6" for the red jet.ISM AND CIRCUMSTELLAR MATTER6falsefalsefalsefalsefalsefalseSUPPORTEDSTARJETT TAURI STARThis object was generated by the targetselector and retrieved from the SIMBAD database.J2000J2000STARJETT TAURI STARThis object was generated by the targetselector and retrieved from the SIMBAD database.
V-Mag not available. Value inserted here to satisfy warnings of BOT requirement.
Position w.r.t. DG TAU:
RA-OFF=-2.032 s
DEC-OFF=-45.93 "J2000J 14.576; H 12.932; K 11.594; The star DG Tau B is completely obscured in the optical by its edge-on disk/flattened envelope.START TAURI STARThis object was generated by the targetselector and retrieved from the SIMBAD database.J2000STIS/NUV-MAMASpectroscopicNoNoE230M2707STIS/NUV-MAMASpectroscopicNoNoE230M2707The scheduling data was generated by CASM 25.0.CASM was run in Phase II mode./Users/dac/1_DATA/2016_HST_nuv/1_Proposal/Cycle23/Target_change/OP-cache/HST_Cycle23_14243_phaseII-v01.xmlThe slit should be perpendicular to the jet PA.
i.e. ORIENT = 294+45-90=249 or 294+45+90=69
The slit should then be offset from the star in the direction along the jet.
i.e. POS TARG = (+0.4,0.0) or POS TARG = (-0.4,0.0), depending on the ORIENT value (which in turn depends on guide star availability).1477393699000249.0(Tic-Visit
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i.e. ORIENT = 296+45-90=251 or 296+45+90=71
The slit should then be offset from the star in the direction along the jet.
i.e. POS TARG = (-1.3,0.0) or POS TARG = (+1.3,0.0), depending on the ORIENT value (which in turn depends on guide star availability).145260396400071.0(Tic-Visit
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i.e. ORIENT = 296+45-90=251 or 296+45+90=71
The slit should then be offset from the star in the direction along the jet.
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