Assigned ID: 26 ----- Attempting Submission 1 (Thu Feb 17 19:56:06 GMT 2011) ----- HST Phase I Proposal 26 (mapping20110217.apt) successfully submitted. ----- Attempting Submission 2 (Fri Feb 25 01:10:14 GMT 2011) ----- HST Phase I Proposal 26 (Mapping20110224_phase2R4.apt) successfully submitted. ----- Attempting Submission 3 (Fri Feb 25 14:28:46 GMT 2011) ----- change to CVZ has been approved. ----- Attempting Submission 1 (Fri Jul 01 00:27:32 GMT 2011) ----- Our primary goal is to constrain the physical properties of Eta Car's wind-wind collision region and the properties of Eta Car B, the hot, very massive secondary companion that is hidden from our view. We propose to do this by measuring the forbidden emission lines in the extended, interacting wind structures resolved in the inner 1.5 arcseconds region. As the mass-loss structures evolve across the 5.54-year orbital period, we will selectively map their spatial and velocity changes at critical phases using the spatial resolution of HST and moderate spectral resolving power of the STIS to generate spatial (2-D), velocity (1-D) data cubes of regions of critical collisional densities. We will use these spatial-velocity data cubes to drive ongoing 3-D models of the interacting winds, adding radiative transfer. We will (A) strongly constrain the 3-D mass loss from the system and (B) determine the properties of Eta Car B, the source of FUV radiation and the driving wind creating the X-ray emitting cavity out of the dominating wind of Eta Car A.

These observations are planned to observe the extended winds of Eta Carinae at critical times to test current and developing 3D hydrodynamic models that eventually will incorporate radiative transfer. Each visit will map the 1.5" extended winds in forbidden emission lines of high and low ionization species including Fe++, Ar++, N+, Fe+ and Ni+. CVZ is requested to obtain complete mappings in each of these lines using one G430M grating setting (4706A) and two G750M grating settings (7354 abd 5734). The mapping is accomplished with a 52"X0.1" aperture at arbitrary position angles, sampled at 0.05" spacing. The observations under this program will occur at apastron (phase 0.5) in fall 2011. Cycle 20 observations will be scheduled one year before periastron (phase 0.8) in summer 2013. Cycle 21 is intended to begin weeks before periastron (phase 0.98) in June 2014, and continue at critical phases just after periastron in fall 2015 (near phases 1.06 and 1.09). We anticipate a very asymmetric recovery structure in [Fe III] and [Ar III] near phase 1.06 with symmetry accomplished by 1.09. The reference phase for structure is at apastron and maximum structures should be between phase 0.8 and 0.98. Mappings already exist for phases 0.084, 0.163 and 0.323 from programs 11506 and 12013 and have been fitted by SPH modeling (in preparation). ISM AND CIRCUMSTELLAR MATTER 12 false 0.0 0.0 false false false false AVAILABLE STAR ETA CARINAE STAR This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 STIS/CCD Spectroscopic No No G430M 4706 STIS/CCD Spectroscopic No No G750M 7283 STIS/CCD Spectroscopic No No G430M 4706 STIS/CCD Spectroscopic No No G750M 7283 STIS/CCD Spectroscopic No No G430M 4706 STIS/CCD Spectroscopic No No G750M 7283 STIS/CCD Spectroscopic No No G430M 4706 STIS/CCD Spectroscopic No No G750M 7283 STIS/CCD Spectroscopic No No G430M 4706 STIS/CCD Spectroscopic No No G750M 7283 POS-TARG MOSAIC DITHER 0.05 This shorter pattern is to gain information on the star position which has very bright continuum. STIS-ALONG-SLIT false true 7 0.0 POS-TARG STIS-PERP-TO-SLIT 90.0 6 false POS-TARG MOSAIC DITHER .05 STIS-ALONG-SLIT false true 41 0.0 POS-TARG STIS-PERP-TO-SLIT 90.0 7 false 1308272825442 The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. /Volumes/Apps_and_Docs/tgull/Documents/EtaCar/HST-Cycles19-21/OP-cache/Cycle19_CVZ_w:Halpha-v01.xml 3700 Schedule around phase 12.5 Oct 19, 2011 (Tic-Visit :proposal-id 12508 :visit-id "01" :proposal-version -1 :trans-version "20110509" :date "16-Jun-2011 22:06:50.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 727872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12508 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :cvz T :proposal-id 12508 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 16383 :al-overhead-at-end 75 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 0 :low-sky "N" :pcs-visibility 0 :pcs-gap 0 ) true 3 0 Peak=9290 e-, Total=15480 e-, S/N=123 two [Fe III] and one [Fe II] line within this grating coverage. Placed in earth occultation Submapping on bright stellar positions. Mapping [N II] 5755 WAVECAL inserted in earth occultation or after exposure 7-7 completed Bright stellar core mapping Bright stellar core mapping