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

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 2014-2020 10,000 galaxies Mass-limited sample:

lg(M*/Mo)>9 0.0<z<0.15, <z>=0.03 Sloan 2.5m telescope, 3

deg field Spatial resolution = 2" (1-2

kpc) Spectral resolution = 60

km/s Spectral coverage: 3600-

10000AA 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(h

alo

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

Future Science with the JCMT 9/23/20144


6 7h 16h

Future Science with the JCMT

Stellar Mass and Target Radius Distributions

9/23/20147


Ongoing efforts to obtain CO data

9/23/20148

Aim: CO emission line for a large sample of MaNGA galaxies with flat mass distribution and uniform limit MH2/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*/Mo)>11.0 and 0.02<z<0.05

CO follow-up with JCMT for MaNGA targets?



CO – Optical IFU Science

9/23/201410

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 XCO conversion factor CO in early-type galaxies


CO follow-up of MaNGA with JCMT

9/23/201411

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*/Mo)<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: MH2/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

9/23/201412

(Calculation done by Georgios Magdis)


T=250 hrs for >250 galaxies9.5<lg(M*/Mo)<11.5, 0.01<z<0.025

9/23/201413

lg(M*/Mo)

z9.0-9.5 9.5-10.5

10.5-11.5

11.5-12.0

Total time

0.010-0.015

199(2252 hr)

72/72(18.6 hr)

2/2(0.06 hr)

0 18.7 hr

0.015-0.025

2625(NAN)

53/3852( 218 hr)

123/193(13.5 hr)

0 232 hr

0.025-0.035

260(NAN)

3882(94268

hr)

2533(1030

hr)

1(0.04 hr)

0.035-0.045

312(NAN)

3413(253074

hr)

1583(2137

hr)

1(0.08 hr)

0.045-0.055

0 1452(NAN)

1666(6192

hr)

1(10.2 hr)

Total time 237 hr 13.6 hr 250 hr


People (MaNGA)

9/23/201414

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…


Thank You!



Redshift and Stellar Mass Distributions

9/23/201417


Effect Radius and Target Radius Distributions

9/23/201418


CO Legacy Database for GASS (COLD-GASS)

9/23/201419

PI: Amelie Santonge 300 hours from IRAM-30m to observe CO(J=1-0) for 366

galaxies with lg(M*/Mo)>10 at 0.025<z<0.05 from the GASS Ongoing program to extend the survey down to lg(M*/Mo)=9

Documents

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