Possible CO Follow-up of MaNGA Cheng Li (SHAO), Martin Bureau (Oxford)

Mapping Nearby Galaxies at Apache Point Observatory (one of the three major experiments in SDSS-IV ) SDSS-IV ,000 galaxies Mass-limited sample: lg(M * /M o )>9 0.0 =0.03 Sloan 2.5m telescope, 3 deg field Spatial resolution = 2" (1-2 kpc) Spectral resolution = 60 km/s Spectral coverage: AA Poisson-limited sky subtraction S/N=4-8 at 1.5 Re Exposure ~3 hours: 3 dithers x 15 min, repeat 3 times over 3 nights 9/23/2014Future Science with the JCMT2 lg(halo mass) lg(stellar mass)

MaNGA Key Science Questions  Disk growth: How galactic disks grow through gas accretion?  Bulge growth: What are roles of stellar accretion, major mergers, and disk instabilities in driving the growth of bulges?  Star formation quenching: How is the star formation cessation regulated by internal and external processes?  Kinematics: How was angular momentum distributed among baryonic and non-baryonic subcomponents as galaxies formed?  Dark Matter Halo: How do baryons and stars trace and influence the shape of the dark halos in which they reside? 9/23/2014Future Science with the JCMT3

9/23/2014Future Science with the JCMT4

9/23/2014Future Science with the JCMT5

6 7h7h 16h

Stellar Mass and Target Radius Distributions 9/23/2014Future Science with the JCMT7

Ongoing efforts to obtain CO data 9/23/2014Future Science with the JCMT8  Aim: CO emission line for a large sample of MaNGA galaxies with flat mass distribution and uniform limit M H2 /M * =0.03  MaNGA ancillary program (PI: Jose Sanchez-Gallego)  Prioritizing >150 MaNGA targets with COLD-GASS data (Santonge et al. 2011)  Two proposals submitted to NRO-45m (PI: Rieko Momose)  CO(J=1-0) for 100 MaNGA targets with lg(M * /M o )>11.0 and 0.02<z<0.05  CO follow-up with JCMT for MaNGA targets?

9/23/2014Future Science with the JCMT9

CO – Optical IFU Science 9/23/2014Future Science with the JCMT10  SF:  Probe SF efficiency as a function of 2D parameters…  K-S law (morphological type, …)  Tully-Fisher relation  Kinematics of different tracers  Metallicity gradients  Accretion mechanisms and environment  X CO conversion factor  CO in early-type galaxies

CO follow-up of MaNGA with JCMT 9/23/2014Future Science with the JCMT11  Sample:  a number of additional 250 galaxies (thus 500 in total if the MaNGA ancillary proposal and NRO-45m proposals are approved)  9.5<lg(M * /M o )<11.5, 0.01<z<0.025  flat mass distribution following COLD-GASS  Observation  global molecular gas using CO(J=2-1) spectral line  down to a uniform detection limit: M H2 /M * =0.03  Observing strategy  Pointing observations: 1-2 pointings per galaxy  Beam 22” vs. IFU radius <32”  Bad weather: Band 4

Non-source rms noise and exposure time 9/23/2014Future Science with the JCMT12 (Calculation done by Georgios Magdis)

T=250 hrs for >250 galaxies 9.5<lg(M * /M o )<11.5, 0.01<z< /23/2014Future Science with the JCMT13 lg(M*/M o ) z Total time (2252 hr) 72/72 (18.6 hr) 2/2 (0.06 hr) hr (NAN) 53/3852 ( 218 hr) 123/193 (13.5 hr) 0232 hr (NAN) 3882 (94268 hr) 2533 (1030 hr) 1 (0.04 hr) (NAN) 3413 ( hr) 1583 (2137 hr) 1 (0.08 hr) (NAN) 1666 (6192 hr) 1 (10.2 hr) Total time237 hr13.6 hr250 hr

People (MaNGA) 9/23/2014Future Science with the JCMT14  China:  Cheng Li, Yu Gao, Yong Shi, Junzhi Wang, Hong Wu, Ming Zhu  Taiwai:  Li-hwai Lin, Yen-Ting Lin  Japan:  Kevin Bundy, Rieko Momose, Wiphu Rujopakarn, Kenichi Tadaki, Kotaro Kohno  Korea ?  UK:  Martin Bureau, Karen Masters, Georgios Magdis  Canada ?  Others:  Jose Sanchez-Gallego, Renbin Yan, Eva Schinnerer  And you…

9/23/2014Future Science with the JCMT15 Thank You!

9/23/2014Future Science with the JCMT16

Redshift and Stellar Mass Distributions 9/23/2014Future Science with the JCMT17

Effect Radius and Target Radius Distributions 9/23/2014Future Science with the JCMT18

CO Legacy Database for GASS (COLD-GASS) 9/23/2014Future Science with the JCMT19  PI: Amelie Santonge  300 hours from IRAM-30m to observe CO(J=1-0) for 366 galaxies with lg(M * /M o )>10 at 0.025<z<0.05 from the GASS  Ongoing program to extend the survey down to lg(M * /M o )=9