2019ApJ...877..118N

Query : 2019ApJ...877..118N

2019ApJ...877..118N - Astrophys. J., 877, 118-118 (2019/June-1)

A spectroscopic study of a rich cluster at z = 1.52 with Subaru and LBT: the environmental impacts on the mass-metallicity relation.

NAMIKI S.V., KOYAMA Y., HAYASHI M., TADAKI K.-I., KASHIKAWA N., ONODERA M., SHIMAKAWA R., KODAMA T., TANAKA I., FORSTER SCHREIBER N.M., KURK J. and GENZEL R.

Abstract (from CDS):

We present the results of our near-infrared spectroscopic observations of a rich cluster candidate around a radio galaxy at z = 1.52 (4C65.22) with Subaru/MOIRCS and Large binocular telescope/LUCI. We observed 71 galaxies mostly on the star-forming main sequence selected by our previous broadband (photo-z) and narrowband Hα imaging observation in this cluster environment. We successfully confirmed the redshifts of 39 galaxies, and concluded that this is a gravitationally bound, real cluster at z = 1.517. Our spectroscopic data also suggest a hint of large-scale filaments or sheet-like three-dimensional structures crossing at the highest-density cluster core. By stacking the spectra to derive their average interstellar medium gas-phase metallicity based on the [N II]/Hα emission line flux ratio, we find that the mass-metallicity relation (MZR) in the 4C65.22 cluster environment is consistent with that of Hα-selected field galaxies at similar redshifts. Our results suggest that the environmental impacts on the MZR is small at high redshifts, but a larger sample of high-z clusters and their member galaxies is still required to fully address the effect of environment as well as its cluster-cluster variation.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: clusters: individual: 4C65.22 - galaxies: ISM - techniques: imaging spectroscopy

Simbad objects: 40

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Number of rows : 40
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [KKT2014] 1263 EmG 17 46 33.42 +65 33 03.3           ~ 2 0
2 [KKT2014] 1521 EmG 17 46 34.69 +65 33 44.1           ~ 2 0
3 [KKT2014] 1002 EmG 17 46 43.25 +65 32 27.4           ~ 2 0
4 [KKT2014] 1554 EmG 17 46 43.74 +65 33 49.4           ~ 2 0
5 [KKT2014] 1567 EmG 17 46 44.09 +65 33 51.5           ~ 2 0
6 [KKT2014] 576 EmG 17 46 49.40 +65 31 23.4           ~ 2 0
7 [KKT2014] 1400 EmG 17 46 50.65 +65 33 22.3           ~ 2 0
8 [KKT2014] 1422 EmG 17 46 51.235 +65 33 25.47           ~ 1 0
9 [KKT2014] 1456 EmG 17 46 53.46 +65 33 33.7           ~ 2 0
10 [KKT2014] 665 EmG 17 46 55.709 +65 31 35.50           ~ 1 0
11 [KKT2014] 1509 EmG 17 46 56.69 +65 33 42.9           ~ 2 0
12 [KKT2014] 1644 EmG 17 46 56.798 +65 34 05.01           ~ 1 0
13 [KKT2014] 1271 EmG 17 46 56.898 +65 33 05.84           ~ 1 0
14 [KKT2014] 453 EmG 17 46 57.518 +65 31 08.66           ~ 1 0
15 [KKT2014] 1328 EmG 17 47 02.938 +65 33 08.28           ~ 1 0
16 [KKT2014] 357 EmG 17 47 04.18 +65 30 57.9           ~ 2 0
17 [KKT2014] 1887 EmG 17 47 04.25 +65 34 24.9           ~ 2 0
18 [KKT2014] 1085 EmG 17 47 05.75 +65 32 40.3           ~ 2 0
19 [KKT2014] 1304 EmG 17 47 07.70 +65 33 10.4           ~ 2 0
20 [KKT2014] 409 EmG 17 47 08.82 +65 31 04.6           ~ 2 0
21 [KKT2014] 538 EmG 17 47 10.190 +65 31 18.31           ~ 1 0
22 [KKT2014] 930 EmG 17 47 10.51 +65 32 15.4           ~ 2 0
23 [KKT2014] 1412 EmG 17 47 12.81 +65 33 24.3           ~ 2 0
24 [KKT2014] 4C 65.22 cluster C?G 17 47 13.8 +65 32 35           ~ 2 0
25 4C 65.22 QSO 17 47 13.90970 +65 32 35.5909     21.2     ~ 23 1
26 [KKT2014] 1151 EmG 17 47 14.15 +65 32 49.0           ~ 2 0
27 [KKT2014] 1369 EmG 17 47 14.44 +65 33 18.2           ~ 2 0
28 [KKT2014] 1046 EmG 17 47 14.80 +65 32 34.6           ~ 2 0
29 [KKT2014] 1248 EmG 17 47 16.44 +65 33 02.4           ~ 2 0
30 [KKT2014] 1006 EmG 17 47 17.19 +65 32 28.4           ~ 2 0
31 [KKT2014] 293 EmG 17 47 17.28 +65 30 50.7           ~ 2 0
32 [KKT2014] 1249 EmG 17 47 17.68 +65 33 00.8           ~ 2 0
33 [KKT2014] 1604 EmG 17 47 20.915 +65 33 56.66           ~ 1 0
34 [KKT2014] 1339 EmG 17 47 23.54 +65 33 08.0           ~ 2 0
35 [KKT2014] 1193 EmG 17 47 25.91 +65 32 55.2           ~ 2 0
36 [KKT2014] 1500 EmG 17 47 28.79 +65 33 42.3           ~ 1 0
37 [KKT2014] 1292 EmG 17 47 30.33 +65 33 10.6           ~ 2 0
38 [KKT2014] 874 EmG 17 47 38.03 +65 32 09.0           ~ 2 0
39 [KKT2014] 1461 EmG 17 47 38.26 +65 33 35.4           ~ 2 0
40 [KKT2014] 1259 EmG 17 47 38.53 +65 33 03.6           ~ 2 0

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