2022ApJ...926...70W

Query : 2022ApJ...926...70W

2022ApJ...926...70W - Astrophys. J., 926, 70-70 (2022/February-2)

The Mass-Metallicity Relation at Cosmic Noon in Overdense Environments: First Results from the MAMMOTH-Grism HST Slitless Spectroscopic Survey.

WANG X., LI Z., CAI Z., SHI D.D., FAN X., ZHENG X.Z., BIAN F., TEPLITZ H.I., ALAVI A., COLBERT J., HENRY A.L. and MALKAN M.A.

Abstract (from CDS):

The MAMMOTH-Grism slitless spectroscopic survey is a Hubble Space Telescope (HST) cycle 28 medium program, which is obtaining 45 orbits of WFC3/IR grism spectroscopy in the density peak regions of three massive galaxy protoclusters at z = 2-3 discovered using the MAMMOTH technique. We introduce this survey by presenting the first measurement of the mass-metallicity relation (MZR) at high redshift in overdense environments via grism spectroscopy. From the completed MAMMOTH-Grism observations in the field of the BOSS1244 protocluster at z = 2.24 ± 0.02, we secure a sample of 36 protocluster member galaxies at z ≃ 2.24, showing strong nebular emission lines ([O III], Hβ, and [O II]) in their G141 spectra. Using the multi-wavelength broadband deep imaging from HST and ground-based telescopes, we measure their stellar masses in the range of [109, 1010.4] M ☉, instantaneous star formation rates (SFR) from 10 to 240 M ☉ yr–1, and global gas-phase metallicities [1{3},1] of solar. Compared with similarly selected field-galaxy samples at the same redshift, our galaxies show, on average, increased SFRs by ∼0.06 dex and ∼0.18 dex at ∼1010.1 M ☉ and ∼109.8 M ☉, respectively. Using the stacked spectra of our sample galaxies, we derive the MZR in the BOSS1244 protocluster core as 12+log(Ø/H)=\left(0.136±0.018\right) x log({M}_{* }/{M}_☉)+\left(7.082±0.175\right), showing a significantly shallower slope than that in the field. This shallow MZR slope is likely caused by the combined effects of efficient recycling of feedback-driven winds and cold-mode gas accretion in protocluster environments. The former effect helps low-mass galaxies residing in overdensities retain their metal production, whereas the latter effect dilutes the metal content of high-mass galaxies, making them more metal-poor than their coeval field counterparts.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Protoclusters - Galaxy evolution - Galaxy abundances - Galaxy formation - High-redshift galaxies

Nomenclature: Table 1: [WLC2022] NNNNN N=39 among (Nos 00262-03516).

Simbad objects: 48

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Number of rows : 48
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 [DSM2020] COSMOS Cluster 2.2 PCG 10 00 50.015 +02 00 02.87           ~ 11 0
2 NAME MRC 1138-262 Protocluster PCG 11 40 48.4 -26 29 11           ~ 91 0
3 [WLC2022] 03061 G 12 43 21.280 +35 57 11.11 24.39         ~ 3 0
4 [WLC2022] 03155 G 12 43 22.290 +35 57 27.95 26.32         ~ 3 0
5 [WLC2022] 02992 G 12 43 22.558 +35 56 59.92 26.4         ~ 3 0
6 [WLC2022] 03496 G 12 43 23.069 +35 58 39.67           ~ 2 0
7 [WLC2022] 03516 G 12 43 24.426 +35 58 44.81 25.86         ~ 3 0
8 [WLC2022] 03385 G 12 43 24.934 +35 58 16.01           ~ 2 0
9 [SCF2021] BOSS1244 MMIRS-mask1 slit-3 EmG 12 43 24.950 +35 58 38.59 26.49         ~ 4 0
10 [WLC2022] 02258 G 12 43 24.991 +35 55 26.49           ~ 1 0
11 [WLC2022] 03276 G 12 43 25.788 +35 57 51.07 24.04         ~ 3 0
12 [WLC2022] 03331 G 12 43 27.101 +35 58 03.67 25.2         ~ 3 0
13 [WLC2022] 01890 G 12 43 27.825 +35 54 49.10 26.36         ~ 3 0
14 [WLC2022] 01071 G 12 43 28.271 +35 53 02.44           ~ 2 0
15 [WLC2022] 01998 G 12 43 28.368 +35 54 58.95 23.94         ~ 3 0
16 [WLC2022] 01999 G 12 43 28.464 +35 54 59.19           ~ 1 0
17 [WLC2022] 01467 G 12 43 28.621 +35 54 05.24 25.52         ~ 3 0
18 [WLC2022] 01435 G 12 43 28.755 +35 54 00.13 25.35         ~ 3 0
19 [WLC2022] 03480 G 12 43 28.977 +35 58 33.32           ~ 1 0
20 [SCF2021] BOSS1244 MMIRS-mask1 slit-27 EmG 12 43 29.220 +35 53 44.75 24.41         ~ 4 0
21 [WLC2022] 02588 G 12 43 29.486 +35 55 58.86           ~ 2 0
22 [WLC2022] 01464 G 12 43 29.617 +35 54 04.57 25.83         ~ 3 0
23 [WLC2022] 00996 G 12 43 29.702 +35 52 50.61 25.86         ~ 3 0
24 [WLC2022] 01394 G 12 43 30.673 +35 53 53.50 24.84         ~ 3 0
25 [WLC2022] 01112 G 12 43 31.039 +35 53 10.60           ~ 2 0
26 [WLC2022] 01573 G 12 43 31.809 +35 54 18.63           ~ 2 0
27 [WLC2022] 01397 G 12 43 32.396 +35 53 53.81           ~ 2 0
28 [WLC2022] 01070 G 12 43 32.667 +35 53 01.93           ~ 1 0
29 [WLC2022] 01165 AGN 12 43 35.347 +35 53 17.87           ~ 1 0
30 [WLC2022] 00313 G 12 43 36.695 +35 51 05.97 25.5         ~ 3 0
31 [WLC2022] 02330 G 12 43 37.339 +35 55 34.24 25.42         ~ 3 0
32 [WLC2022] 02474 G 12 43 37.402 +35 55 46.90           ~ 2 0
33 [WLC2022] 00381 G 12 43 38.194 +35 51 16.37           ~ 2 0
34 [WLC2022] 00769 G 12 43 38.338 +35 52 16.85 24.43         ~ 3 0
35 [WLC2022] 00467 AGN 12 43 40.374 +35 51 29.75           ~ 1 0
36 [WLC2022] 02090 G 12 43 40.977 +35 55 08.28           ~ 1 0
37 [WLC2022] 00478 G 12 43 41.044 +35 51 31.99           ~ 1 0
38 [WLC2022] 00613 G 12 43 41.069 +35 51 56.93 25.38         ~ 3 0
39 [WLC2022] 02327 G 12 43 42.711 +35 55 34.19 25.93         ~ 3 0
40 [SCF2021] BOSS1244 LUCI-mask slit-10 EmG 12 43 43.410 +35 54 49.69           ~ 2 0
41 [WLC2022] 00262 AGN 12 43 45.205 +35 50 57.04 24.71         ~ 2 0
42 [ZCA2021] BOSS1244 PCG 12 44 +36.0           ~ 23 0
43 [CFB2017] BOSS1441 PCG 14 41 26.40 +40 01 12.0           ~ 27 0
44 ClG J1449+0856 ClG 14 49.0 +08 56           ~ 70 0
45 [ZCA2021] BOSS1542 PCG 15 42.8 +38 57           ~ 17 0
46 NAME USS 1558-003 Protocluster PCG 16 01 17.0 -00 28 48           ~ 26 0
47 NAME HS 1700 Protocluster PCG 17 01.0 +64 12           ~ 38 0
48 SSA 22 reg 22 17 34.7 +00 15 07           ~ 351 0

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