Resubmission to include a copy of failed visit 03. Note that I adjusted the ORIENTs to get windows next year in February. 379234744 ----- Attempting Submission 1 (Tue Jul 30 19:31:21 GMT 2024) ----- ----- Attempting Submission 2 (Wed Dec 11 20:36:31 GMT 2024) ----- ----- Attempting Submission 3 (Thu Mar 26 02:37:06 GMT 2026) ----- Visit planner was run Anatomy of a Starburst: Spatially resolving Star Formation and Feedback in the nucleus of M83 Given that most of the stellar mass in the Universe was assembled in intense and powerful episodes of star formation (SF) at high-redshift, studies of local starburst galaxies provide us with the unique opportunity to investigate in detail a phenomenon with profound cosmic consequences. FUV spectroscopic studies, available only through the unmatched UV capabilities of HST, are the only venue to access a complete characterization of these young stellar populations formed in nearby highly star-forming galaxies. In an effort to improve our understanding on (1) the parameters that regulate galaxy evolution, (2) the link between pc-scale physics and galactic-scale mechanisms, and (3) the direct effects of young stellar populations onto their surrounding multiphase ISM, we propose a unique spatially-resolved HST/STIS longslit study of 15 young massive clusters in the nuclear region of M83. With this program we aim to quantify for the first time the effects of these young stars, shaping the properties of the gas in extreme environments like those observed in starbursts. Our program will correlate the ionizing and mechanical feedback from these massive stellar populations with the observed properties of the ionized and warm molecular gas (from archival JWST/MIRI MRS observations) at the unprecedented spatial scales of ~5 pc. Our efficient project will take us one step forward to probing how young massive stars impact and influence galaxy evolution, and star formation at large. This HST/STIS program targets a sample of young massive clusters in the nuclear reagion of the spiral galaxy, M83. We use the G140L/52X0.2 setting to collect spectra for 10 spatially resolved star clusters. Given the nature of the starbust region in M83, in each visit we acquire the bright young star cluster in the south-east region of the nucleus, and then apply an offset to the brightest target of interest in the STIS slit. The sample of star clusters was chosen from the photometric catalog by Harris et al. (2001). We note that in each visit, we taken exposures with a single slit orientation, targeting between 2 and 4 clusters at a time. The exposure times were estimated adopting a flat spectrum in F_lambda, normalized to the magnitudes estimated for the brightest cluster according to Harris et al. (2001). Our observations reach a S/N~> 6 at a wavelength of 1550 A (C IV). The PI and CoIs of this proposal have lead and/or contributed to successful projects relying on imaging and spectroscopy from space-based (HST, Spitzer, Herschel, SOFIA, FUSE, JWST), and/or ground-based telescopes (ALMA, VLT, Keck, Gemini). Dr. Lebouteiller and Dr. Ramambason are expert on studies of the chemical evolution of galaxies, with a particular focus on thermal processes in the ISM as well as on the properties of the interstellar molecules and dust. Both Drs. Lebouteiller and Ramambason are currently leading and involved in several projects investigating CO-dark H2 gas in different environments. Their expertise on photionization and multi-phase ISM modeling is critical for the success of this project. Drs. Hernandez, Jones and Smith, are experts in characterizing the ISM, and its different components: stellar populations, ionized gas, neutral gas, molecular gas (both cold and warm), dust and PAHs. They also have ample expertise analyzing and interpreting FUV spectroscopic observations (specifically COS data) of young stellar populations, as their combined list of publications on this topic is rather extensive. Galaxies Stellar Populations and the Interstellar Medium 6 false true false false false false SUPPORTED GALAXY STARBURST This object was generated by the targetselector and retrieved from the NED database. J2000 J2000 GALAXY STARBURST This object was generated by the targetselector and retrieved from the NED database. J2000 GALAXY STARBURST This object was generated by the targetselector and retrieved from the NED database. J2000 GALAXY STARBURST This object was generated by the targetselector and retrieved from the NED database. J2000 STIS/FUV-MAMA Spectroscopic No No G140L 1425 STIS/FUV-MAMA Spectroscopic No No G140L 1425 STIS/FUV-MAMA Spectroscopic No No G140L 1425 STIS/FUV-MAMA Spectroscopic No No G140L 1425 The scheduling data was generated by CASM 32.1.3. CASM was run in Phase II mode. 1773841844000 320.0 (Tic-Visit :proposal-id 17821 :visit-id "01" :proposal-version -1 :trans-version "20240604" :date "11-Dec-2024 15:36:15.0" :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 470048 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17821 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17821 :visit-id "01" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2652 :al-overhead-at-end 0 :internal-dur-at-end 178 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3032 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17821 :visit-id "01" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2652 :al-overhead-at-end 0 :internal-dur-at-end 320 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3032 :pcs-gap 0 ) (Tic-Orbit :proposal-id 17821 :visit-id "01" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2652 :al-overhead-at-end 0 :internal-dur-at-end 582 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3032 :pcs-gap 0 ) true 3 0 The scheduling data was generated by CASM 32.1.3. 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CASM was run in Phase II mode. 1769223689000 281.0 (Tic-Visit :proposal-id 17821 :visit-id "04" :proposal-version -1 :trans-version "20240604" :date "11-Dec-2024 15:06:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 156960 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 17821 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 17821 :visit-id "04" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2530 :al-overhead-at-end 0 :internal-dur-at-end 440 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2910 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 33.1. 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