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Sreevani Jarugula Defense - "Molecules in the Early Universe"
- Event Type
- Other
- Sponsor
- Department of Astronomy
- Location
- Kaler Classroon, Astronomy Building
- Virtual
- Join online
- Date
- Jul 8, 2022 12:00 pm
- Speaker
- Sreevani Jarugula
- Contact
- Rebecca Bare
- rsbare@illinois.edu
- Phone
- 217-265-8226
- Views
- 48
- Originating Calendar
- Astronomy Department Events Calendar
- Dusty star-forming galaxies (DSFGs) at high redshift play an important role in the stellar assembly of the early universe. These intensely star-forming galaxies with star formation rates (SFR) ranging from tens to thousands of solar masses per year are enshrouded in dust and bright in the far-infrared and sub-millimeter wavelengths. The physics of the interstellar medium can be studied through molecular observations. Molecular hydrogen (H2) is the fuel for star formation and can be traced by carbon monoxide (CO). Water (H2O), which is one of the most abundant molecules in the universe, is a good tracer of the infrared radiation. In my thesis talk, I will present a detailed analysis of molecular observations in the high redshift sub-millimeter galaxies (SMGs) discovered in the South Pole Telescope (SPT) survey. From the resolved H2O observations with ALMA, we find that the lower energy transitions of H2O are correlated with far-infrared luminosity on both global and kiloparsec scales within both starburst galaxies and an active galactic nuclei. This result suggests that H2O can be used as a resolved SFR indicator. I will also present a detailed molecular characterization of SPT0311-58 at z=6.9, which is just ~800 Myr after the Big Bang. It is the most massive infrared luminous galaxy pair discovered in the Epoch of Reionization (EoR) and the earliest detections of H2O in a starburst galaxy. I will present the results from the radiative transfer modeling of CO transitions, [CI], and dust in this early pair of galaxies. From our analysis, we find that SPT0311-58, in the EoR, is similar to other high-redshift SMGs.Join Zoom MeetingMeeting ID: 890 506 2167Passcode: obscosOne tap mobile+13126266799,,8905062167#,,,,*054495# US (Chicago)+13017158592,,8905062167#,,,,*054495# US (Washington DC)Dial by your location+1 312 626 6799 US (Chicago)+1 301 715 8592 US (Washington DC)+1 470 250 9358 US (Atlanta)+1 470 381 2552 US (Atlanta)+1 646 518 9805 US (New York)+1 651 372 8299 US (Minnesota)+1 786 635 1003 US (Miami)+1 929 205 6099 US (New York)+1 267 831 0333 US (Philadelphia)+1 253 215 8782 US (Tacoma)+1 346 248 7799 US (Houston)+1 602 753 0140 US (Phoenix)+1 669 219 2599 US (San Jose)+1 669 900 6833 US (San Jose)+1 720 928 9299 US (Denver)+1 971 247 1195 US (Portland)+1 213 338 8477 US (Los Angeles)+1 647 558 0588 Canada+1 778 907 2071 Canada+1 438 809 7799 Canada+1 587 328 1099 Canada+1 647 374 4685 Canada+49 69 7104 9922 Germany+49 695 050 2596 Germany+44 203 481 5237 United Kingdom+44 203 481 5240 United Kingdom+44 131 460 1196 United Kingdom+81 3 4578 1488 Japan+61 3 7018 2005 Australia+61 8 7150 1149 Australia+61 2 8015 6011 Australia+52 554 161 4288 MexicoMeeting ID: 890 506 2167Passcode: 054495Find your local number: https://illinois.zoom.us/u/kdRv1FBoJoin by SIPJoin by H.323162.255.37.11 (US West)162.255.36.11 (US East)221.122.88.195 (China)115.114.131.7 (India Mumbai)115.114.115.7 (India Hyderabad)213.19.144.110 (Amsterdam Netherlands)213.244.140.110 (Germany)103.122.166.55 (Australia Sydney)103.122.167.55 (Australia Melbourne)209.9.211.110 (Hong Kong SAR)64.211.144.160 (Brazil)69.174.57.160 (Canada Toronto)65.39.152.160 (Canada Vancouver)207.226.132.110 (Japan Tokyo)149.137.24.110 (Japan Osaka)Meeting ID: 890 506 2167Passcode: 054495Join by Skype for Business