1. The Local Universe A CCAT perspective Christine Wilson McMaster University, Canada 7 January 20131AAS 221 – Long Beach, CA

2. 2 7 January 2013AAS 221 – Long Beach, CA Science in the local universe CCAT can help us understand  how star formation is regulated in galaxies  how the interstellar medium in galaxies varies with environment  how energetic processes such as AGN and starbursts impact the ISM in galaxies

3. Resolving power of Herschel

4. Resolving power of CCAT

5. 5 7 January 2013AAS 221 – Long Beach, CA The high impact of CCAT Three case studies from the nearby universe:  Star formation in the Magellanic Clouds  Dust and gas on the scale of molecular clouds in M83  A spectroscopic survey of AGNs to z=0.2

6. 6 7 January 2013AAS 221 – Long Beach, CA (1) Star formation in the Magellanic Clouds (Herschel image: ESA/NASA/ JPL-Caltech/ STScI)

7. LMC star forming regions imaged with CCAT W43 (d=6 kpc) with Herschel at 500 microns (Nguyen Luong et al. 2013, in prep.) CCAT at 350 microns will be able to image similar filaments in the LMC with the same spatial resolution as in this image.

8. LMC star forming regions imaged with CCAT W43 (d=6 kpc) with Herschel at 500 microns (Nguyen Luong et al. 2013, in prep.) CCAT at 350 microns will be able to image similar filaments in the LMC with the same spatial resolution as in this image.

9. LMC star forming regions imaged with CCAT W43 (d=6 kpc) with Herschel at 500 microns (Nguyen Luong et al. 2013, in prep.) CCAT at 350 microns will be able to image similar filaments in the LMC with the same spatial resolution as in this image.

10. 10 7 January 2013AAS 221 – Long Beach, CA CCAT’s sensitivity and resolution will allow us to identify and study individual young stellar objects in the Magellanic Clouds  A 5 sigma sensitivity of 3.6 mJy at 350 microns is roughly 1-3 M o of gas+dust at 50 kpc distance  3.5” resolution is about 1 pc  CCAT can map all of the star forming regions in LMC/SMC to this sensitivity in a few 100 hours  Complete census of YSOs to near a solar mass! Star formation in the Magellanic Clouds

11. 11 7 January 2013AAS 221 – Long Beach, CA (2) Dust and gas in M83 Herschel images at 500 and 70 microns (Foyle et al. 2012, MNRAS) Uniform gas-to-dust ratio Local temperature variations

12. 12 7 January 2013AAS 221 – Long Beach, CA CCAT’s view of M83

13. 13 7 January 2013AAS 221 – Long Beach, CA M83 is a gas-rich galaxy with a nuclear starburst at a distance of 3.5 Mpc in the southern sky  3.5” resolution is 60 pc, so we can study dust on scale of individual giant molecular clouds  use dust instead of CO to find and study clouds (0.9 mJy at 350 microns is 1000 M o at 3.5 Mpc)  Regulation of star formation: in starburst, spiral arms, interarm regions  Use [CI] lines as tracer for CO-dark molecular gas Dust and gas in M83

14. 14 7 January 2013AAS 221 – Long Beach, CA (3) Active galaxies to z=0.2 Arp 220, Rangwala et al. 2012, ApJ

15. Characterizing the ISM of galaxies CO SLED constrains molecular gas reservoir, sources of gas heating (PDR, XDR, cosmic rays, microturbulent shocks) Arp 220 molecular gas parameters from Herschel (Rangwala et al. 2011)

16. 16 7 January 2013AAS 221 – Long Beach, CA Wide-band spectroscopy of active galaxies with CCAT Bridge the gap between the Milky Way and high- redshift studies:  BAT hard Xray selected AGN  flux limited sample of ULIRGs  excitation source (PDRs, XDRs, shocks, mechanical heating all seen with Herschel)  astrochemistry

17. 17 7 January 2013AAS 221 – Long Beach, CA The promise of CCAT spectroscopy: XSPEC Band 3 Arp 220, Rangwala et al. 2012, ApJ

18. 18 7 January 2013AAS 221 – Long Beach, CA The promise of CCAT spectroscopy: XSPEC Band 3 Arp 220 as seen at z=0.2

19. 19 7 January 2013AAS 221 – Long Beach, CA The Local Universe with CCAT CCAT will provide:  a complete census of solar-type YSOs in the Magellanic Clouds  the ability to study dust and gas on GMC scales in nearby galaxies like M83  measurement of gas reservoir and dominant heat source in many AGNs and starbursts to z=0.2 And many more observations of the diverse local universe!

20. © 2011. CCAT. All Rights Reserved. www.CCATObservatory.org

21. 21 7 January 2013AAS 221 – Long Beach, CA

22. 22 7 January 2013AAS 221 – Long Beach, CA The CCAT Local Universe CCAT will help us understand  how star formation is regulated in galaxies  how the interstellar medium in galaxies varies with environment  how energetic processes such as AGN and starbursts impact the ISM in galaxies