0 Assigned ID: 3229 ----- Attempting Submission 1 (Fri Mar 25 14:03:20 GMT 2022) ----- The number of orbits used exceeds the number allocated This version contains a new Visit (21), containing a repeat of orbits 1 and 2 from Visit 11, as awarded by the TTRB under HOPR 93038. I hope it is possible to execute this visit in the current observing window. Thanks. -819248533 ----- Attempting Submission 1 (Fri Jul 08 19:29:23 GMT 2022) ----- ----- Attempting Submission 2 (Tue May 07 15:54:42 GMT 2024) ----- ----- Attempting Submission 3 (Tue Jan 21 13:21:40 GMT 2025) ----- Only 2 FP-POS positions are used since we are using the G130M/1291 setting, so this warning is not a problem. Circumgalactic Gas on the Outskirts of the Local Group: the Halo of Sextans B Irregular galaxies are gas-rich, star-forming, and abundant. Around 40 exist in the Local Group (LG) where their gaseous halos cover large angular sizes on the sky, yet only a handful have published CGM detections. Furthermore, we have little knowledge of the CGM at the outer frontier of the Local Group at distances above 1 Mpc, where the intragroup medium is expected to be very low density so the influence of ram-pressure stripping should be small. Using archival COS observations, we have found tentative evidence for a detection of the CGM of Sextans B using a QSO sightline at low impact parameter (8 kpc or ~0.09 r_virial). We propose to confirm the CGM detection using high-S/N COS observations of a second QSO sightline at very low impact parameter from the Galaxy (4 kpc or ~0.04 r_virial). The relative strength of metal-line absorption in the two sightlines will allow us to determine the CGM mass, kinematics, and metal budget. This important experiment will allow us to place constraints on a gaseous halo in a quiescent low-density environment and explore gas flows in a previously uncharted region of the Local Group. This COS program contains two 4-orbit visits on a single QSO (J1000+0524) behind the halo of Sextans B, an irregular galaxy on the edge of the Local Group. The two visits are identical, each with an ACQ/IMAGE with PSA/MIRRORA followed by four G130M/1291 science exposures (two with FP-POS=3 and two with FP-POS=4). Only 2 FP-POS are used because this is the default for G130M/1291 with both detector segments on. All team members have considerable experience with the observation, analysis, and interpretation of UV datasets on gas in and around galaxies. The PI Dr Andrew Fox is an expert in the analysis and interpretation of HST/COS spectra of interestellar and circumgalactic gas. He has led seven HST GO or AR proposals on CGM-related science, six of which have led to refereed publications, and has first-authored 20 refereed papers in relevant fields. He will oversee the analysis and manage the contributions of the Co-Is. Dr Trisha Ashley is an expert on the H I properties of dwarf galaxies, the interpretation of their velocity fields, star formation, and blue compact dwarf galaxies. Dr Jackie Monkiewicz is an expert on the optical properties of dwarf galaxies, including star formation rates and metallicities. Dr Frances Cashman is an expert on the ISM and IGM and on Cloudy simulations of interstellar absorbers, and on molecular outflows in galaxy winds. Drs. Philipp Richter, Rongmon Bordoloi, Sanch Borthakur, Jason Tumlinson, and Nicolas Lehner, are all highly experienced UV spectroscopists with considerable experience in the study of interstellar and intergalactic media and their influence on galaxy evolution. Each has led HST/COS proposals and/or first author papers in this subject. They will offer advice, expertise, and judgement on the interpretation and modeling of the results. Intergalactic Medium and the Circumgalactic Medium 6 false false true false false false false false SUPPORTED EXT-MEDIUM ABSORPTION LINE SYSTEM ABSORPTION LINE SYSTEM - EXTRAGALACTIC HIGH VELOCITY CLOUD IGM NO This object was generated by the targetselector and retrieved from the SIMBAD database. J2000 J2000 GALEX FUV=19.13 NUV=19.04 COS/FUV Spectroscopic No No G130M 1291 The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. 1712653107000 118.80000000000001 (Tic-Visit :proposal-id 17209 :visit-id "01" :proposal-version -1 :trans-version "20220516" :date "08-Jul-2022 15:27:54.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 191488 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17209 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17209 :visit-id "01" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2752 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "01" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "01" :orbit-number 3 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "01" :orbit-number 4 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 372 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 4 0 The scheduling data was generated by CASM 32.1. CASM was run in Phase II mode. 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CASM was run in Phase II mode. /private/var/folders/tk/3gx7p0k112l_9pg4glzb8hhh00015x/T/OPVisit2532023555248151033.xml Repeat of Visit 11 under HOPR 93038 (Tic-Visit :proposal-id 17209 :visit-id "21" :proposal-version -1 :trans-version "20240604" :date "21-Jan-2025 08:17:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 104480 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17209 :visit-id "21" :obset-id "21" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17209 :visit-id "21" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "21" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 388 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 30.3. CASM was run in Phase II mode. 1713085735000 118.80000000000001 (Tic-Visit :proposal-id 17209 :visit-id "02" :proposal-version -1 :trans-version "20220630" :date "07-May-2024 11:40:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 191488 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17209 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17209 :visit-id "02" :orbit-number 1 :pcs-time 393 :si-vis-utilization 2752 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "02" :orbit-number 2 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "02" :orbit-number 3 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "02" :orbit-number 4 :pcs-time 392 :si-vis-utilization 2753 :al-overhead-at-end 0 :internal-dur-at-end 388 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 4 0 The scheduling data was generated by CASM 32.1. CASM was run in Phase II mode. Repeat of Visit 02 under HOPR 92824 1736344883000 297.2136254032282 (Tic-Visit :proposal-id 17209 :visit-id "12" :proposal-version -1 :trans-version "20240604" :date "18-Jun-2024 16:37:20.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 191488 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17209 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17209 :visit-id "12" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "12" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "12" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 76 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17209 :visit-id "12" :orbit-number 4 :pcs-time 380 :si-vis-utilization 2630 :al-overhead-at-end 0 :internal-dur-at-end 388 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3010 :pcs-gap 0 ) true 4 0