2008MNRAS.389.1223M


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.22CEST08:42:30

2008MNRAS.389.1223M - Mon. Not. R. Astron. Soc., 389, 1223-1232 (2008/September-3)

[OIII] emitters in the field of the MRC0316-257 protocluster.

MASCHIETTO F., HATCH N.A., VENEMANS B.P., ROTTGERING H.J.A., MILEY G.K., OVERZIER R.A., DOPITA M.A., EISENHARDT P.R., KURK J.D., MEURER G.R., PENTERICCI L., ROSATI P., STANFORD S.A., VAN BREUGEL W. and ZIRM A.W.

Abstract (from CDS):

Venemans et al. found evidence for an overdensity of Lyα emission-line galaxies associated with the radio galaxy MRC0316-257 at z = 3.13 indicating the presence of a massive protocluster. Here, we present the results of a search for additional star-forming galaxies and active galactic nucleus (AGN) within the protocluster. Narrow-band infrared imaging was used to select candidate [Oiii] emitters in a 1.1x1.1Mpc2 region around the radio galaxy. 13 candidates have been detected. Four of these are among the previously confirmed sample of Lyα galaxies, and an additional three have been confirmed through follow-up infrared spectroscopy. The three newly confirmed objects lie within a few hundred km/s of each other, but are blueshifted with respect to the radio galaxy and Lyα emitters by ∼2100km/s. Although the sample is currently small, our results indicate that the radio-selected protocluster is forming at the centre of a larger, ∼60 comoving Mpc superstructure. On the basis of a Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) imaging study we calculate dust-corrected star formation rates and investigate morphologies and sizes of the [Oiii] candidate emitters. From a comparison of the star formation rate derived from UV continuum and [Oiii] emission, we conclude that at least two of the [Oiii] galaxies harbour an AGN which ionized the O+ gas.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: active - galaxies: clusters: general - galaxies: evolution - cosmology: observations - early Universe

Nomenclature: Table 1: [MHV2008] NN (Nos 1-18).

Simbad objects: 23

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Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Feige 22 WD* 02 30 16.6276774109 +05 15 50.698326875 11.939 12.746 12.798 12.901 13.004 DA2.5 119 0
2 [MHV2008] 5 G 03 18 06.60 -25 35 20.1     26.4     ~ 1 0
3 [MHV2008] 17 EmG 03 18 06.92 -25 35 26.2     27.91     ~ 2 0
4 [MHV2008] 2 G 03 18 08.60 -25 35 28.8     25.3     ~ 1 0
5 [MHV2008] 10 G 03 18 08.80 -25 35 08.3     25.7     ~ 1 0
6 [LDC96] A EmG 03 18 09.00 -25 34 59.6     23.84 23.77   ~ 4 0
7 [MHV2008] 14 EmG 03 18 09.67 -25 36 47.5     26.14     ~ 2 0
8 NAME MRC 0316-257 Protocluster ClG 03 18 12.00 -25 35 09.0           ~ 7 0
9 NVSS J031812-253509 rG 03 18 12.00 -25 35 09.0   23.6 23.8     ~ 74 2
10 [MHV2008] 11 EmG 03 18 12.03 -25 34 52.8     26.44     ~ 2 0
11 [MHV2008] 6 EmG 03 18 12.55 -25 36 23.0     26.00     ~ 2 0
12 [MHV2008] 9 G 03 18 12.70 -25 36 44.4     26.9     ~ 1 0
13 [MHV2008] 8 G 03 18 13.70 -25 35 07.7     23.9     ~ 1 0
14 [MHV2008] 15 EmG 03 18 14.14 -25 35 54.3     27.55     ~ 2 0
15 [MHV2008] 4 G 03 18 15.10 -25 36 37.8     25.7     ~ 1 0
16 [MHV2008] 18 EmG 03 18 15.12 -25 35 13.1     25.73     ~ 2 0
17 [MHV2008] 16 EmG 03 18 15.17 -25 35 28.9     27.09     ~ 2 0
18 [MHV2008] 12 G 03 18 15.30 -25 35 41.1           ~ 1 0
19 [MHV2008] 13 G 03 18 16.10 -25 36 19.9     25.3     ~ 1 0
20 [MHV2008] 7 EmG 03 18 16.78 -25 35 46.2     24.47     ~ 3 0
21 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
22 GSPC S363-D * 05 36 44.9 -34 46 39           ~ 6 0
23 FS 137 * 16 26 42.8 +05 52 20   13.88 13.34     G1 21 0

    Equat.    Gal    SGal    Ecl

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