2016ApJ...820...84L


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.16CEST21:38:52

2016ApJ...820...84L - Astrophys. J., 820, 84 (2016/April-1)

A Keck adaptive optics survey of a representative sample of gravitationally lensed star-forming galaxies: high spatial resolution studies of kinematics and metallicity gradients.

LEETHOCHAWALIT N., JONES T.A., ELLIS R.S., STARK D.P., RICHARD J., ZITRIN A. and AUGER M.

Abstract (from CDS):

We discuss spatially resolved emission line spectroscopy secured for a total sample of 15 gravitationally lensed star-forming galaxies at a mean redshift of z ~= 2 based on Keck laser-assisted adaptive optics observations undertaken with the recently improved OSIRIS integral field unit (IFU) spectrograph. By exploiting gravitationally lensed sources drawn primarily from the CASSOWARY survey, we sample these sub-L* galaxies with source-plane resolutions of a few hundred parsecs ensuring well-sampled 2D velocity data and resolved variations in the gas-phase metallicity. Such high spatial resolution data offer a critical check on the structural properties of larger samples derived with coarser sampling using multiple-IFU instruments. We demonstrate how kinematic complexities essential to understanding the maturity of an early star-forming galaxy can often only be revealed with better sampled data. Although we include four sources from our earlier work, the present study provides a more representative sample unbiased with respect to emission line strength. Contrary to earlier suggestions, our data indicate a more diverse range of kinematic and metal gradient behavior inconsistent with a simple picture of well-ordered rotation developing concurrently with established steep metal gradients in all but merging systems. Comparing our observations with the predictions of hydrodynamical simulations suggests that gas and metals have been mixed by outflows or other strong feedback processes, flattening the metal gradients in early star-forming galaxies.

Abstract Copyright:

Journal keyword(s): galaxies: abundances - galaxies: evolution - galaxies: high-redshift - galaxies: kinematics and dynamics - galaxies: starburst

Simbad objects: 31

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Number of rows : 31

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 CSWA 165 gLS 01 05 19.66 +01 44 56.4           ~ 6 0
2 [SAB2013] SDSS J0105+0145 source G 01 05 19.89 +01 44 59.1           ~ 3 0
3 TYC 4737-23-1 * 04 52 58.8578698478 -00 14 41.173408103 12.105 11.900 11.719 11.627 11.530 A3 26 0
4 [JSE2010] MACS J0744+3927 G 07 44 47.82 +39 27 25.7           ~ 6 0
5 [SAB2013] SDSS J0800+0812 source G 08 00 12.37 +08 12 07.0           ~ 2 0
6 CSWA 11 gLS 08 00 13.06 +08 12 08.4           ~ 4 0
7 [SAB2013] SDSS J0807+4410 source G 08 07 31.37 +44 10 51.3           ~ 3 0
8 CSWA 139 gLS 08 07 31.50 +44 10 48.5           ~ 4 0
9 [DAA2009] SDSS J090002.79+223403.6 gLS 09 00 02.79 +22 34 03.6           ~ 10 0
10 [DAA2009] SDSS J090002.79+223403.6 source G 09 00 02.79 +22 34 03.6           ~ 14 1
11 ACO 773 ClG 09 17 51.3 +51 43 20           ~ 255 0
12 [RSK2010] A 773 1.2 LeG 09 17 57.408 +51 43 29.53           ~ 3 0
13 CSWA 31 gLS 09 21 25.74 +18 10 17.3           ~ 5 0
14 [SAB2013] SDSS J0921+1810 source G 09 21 26.46 +18 10 13.7           ~ 2 0
15 CSWA 15 gLS 10 08 59.77 +19 37 17.5           ~ 3 0
16 [SAB2013] SDSS J1009+1937 source G 10 09 00.06 +19 37 23.4           ~ 2 0
17 EGGR 70 WD* 10 33 42.7629684770 -11 41 38.339441758 11.851 12.847 13.012 13.138 13.278 DA1.9 103 0
18 SGAS J103842+484926 LeG 10 38 42.0 +48 49 26           ~ 6 0
19 [DAA2009] SDSS J114833.14+193003.2 source G 11 48 33.14 +19 30 03.2           ~ 9 0
20 [SAB2013] SDSS J1206+5142 source G 12 06 02.09 +51 42 29.5           ~ 5 0
21 [WHX2009] SDSS J134332.8+415503 gLS 13 43 32.8 +41 55 03           ~ 11 0
22 [DAA2009] SDSS J134332.85+415503.4 source G 13 43 32.85 +41 55 03.4           ~ 6 1
23 [SAB2013] SDSS J1441+1441 source G 14 41 49.15 +14 41 20.6           ~ 2 0
24 CSWA 20 gLS 14 41 49.16 +14 41 20.6           ~ 8 1
25 CSWA 128 gLS 19 58 35.32 +59 50 58.9           ~ 7 0
26 [SAB2013] SDSS J1958+5950 source G 19 58 35.65 +59 50 53.6           ~ 4 0
27 ClG J2135-0102 ClG 21 35 12.1 -01 02 57           ~ 36 0
28 CSWA 159 gLS 22 22 08.57 +27 45 35.6           ~ 4 0
29 [SAB2013] SDSS J2222+2745 source a G 22 22 08.58 +27 45 24.7           ~ 2 0
30 FS 26 * ~ ~           ~ 4 0
31 FS 9 * ~ ~           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2019.10.16-21:38:52

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