J/ApJ/704/548 Photometric properties of galaxies at z=4-6 (Overzier+, 2009)
Stellar masses of Lyman break galaxies, Lyα emitters, and radio galaxies
in overdense regions at z = 4-6.
Overzier R.A., Shu X., Zheng W., Rettura A., Zirm A., Bouwens R.J.,
Ford H., Illingworth G.D., Miley G.K., Venemans B., White R.L.
<Astrophys. J., 704, 548-563 (2009)>
=2009ApJ...704..548O 2009ApJ...704..548O
ADC_Keywords: Galaxies, photometry ; Photometry, infrared ; Radio sources
Keywords: galaxies: high-redshift - galaxies: stellar content -
large-scale structure of universe - quasars: individual
(TNJ1338-1942, TNJ0924-2201, SDSSJ0836+0054, SDSSJ1030+0524)
Abstract:
We present new information on galaxies in the vicinity of luminous
radio galaxies (RGs) and quasars at z∼4, 5, and 6. These fields were
previously found to contain overdensities of Lyman Break Galaxies
(LBGs) or spectroscopic Lyα emitters (LAEs), which were
interpreted as evidence for clusters-in-formation ("protoclusters").
We use Hubble Space Telescope and Spitzer data to infer stellar masses
from stellar synthesis models calibrated against the Millennium Run
simulations, and contrast our results with large samples of LBGs in
more average environments as probed by the Great Observatories Origins
Deep Survey (GOODS).
Description:
In this paper we will derive stellar masses, as inferred from the
rest-frame optical fluxes, for a sample of LBGs, LAEs, and RGs in two
protoclusters: "TN1338" at z∼4.1 and "TN0924" at z∼5.2. For
completeness, we also present a small sample of i-dropouts near two
quasars (SDSSJ0836+0054 and SDSSJ1030+0524) at z∼6 studied by
Stiavelli et al. (2005ApJ...622L...1S 2005ApJ...622L...1S) and Zheng et al.
(2006ApJ...640..574Z 2006ApJ...640..574Z).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 85 66 Photometric properties of g475-dropouts in the
field of TN J1338-1942 (z=4.11); LBGs sample
table3.dat 85 12 Photometric properties of spectroscopically
confirmed Lyα emitters in the field of
TN J1338-1942
table4.dat 64 25 Photometric properties of V606-dropouts in the
field of TN J0924-2201 (z=5.20)
table5.dat 70 14 Photometric properties of i775-dropouts in the
field of SDSSJ0836+0054 and SDSSJ1030+0524
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
II/261 : GOODS initial results (Giavalisco+, 2004)
J/ApJ/703/2033 : LBGs in the HUDF (Rafelski+, 2009)
J/ApJ/673/143 : HST photometry of TN J1338-1942 (Overzier+, 2008)
J/ApJ/659/84 : Spectroscopy and photometry of z~=5 galaxies (Stark+, 2007)
J/A+A/461/823 : Candidate Lyα emitting galaxies (Venemans+, 2007)
J/A+A/431/793 : Ly-alpha emitters around MRC 0316-257 (Venemans+, 2005)
J/ApJ/519/1 : Lyman-break galaxies at z ≳ 4 (Steidel+, 1999)
Byte-by-byte Description of file: table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [OBC2008] ? Object identification (1)
6- 7 A2 --- n_[OBC2008] RG: the radio Galaxy TN J1338-1942 targeted
9- 11 A3 --- OID ID from table 3 of Overzier et al. (1)
12 A1 --- n_OID [ef] Individual remarks (2)
14- 15 I2 h RAh Hour of right ascension (J2000)
17- 18 I2 min RAm Minute of right ascension (J2000)
20- 24 F5.2 s RAs Second of right ascension (J2000)
26 A1 --- DE- Sign of declination (J2000)
27- 28 I2 deg DEd Degree of declination (J2000)
30- 31 I2 arcmin DEm Arcminute of declination (J2000)
33- 37 F5.2 arcsec DEs Arcsecond of declination (J2000)
39- 43 F5.2 mag i-z HST/ACS (i-z) color index (F775W-F850LP)
45- 48 F4.2 mag e_i-z i-z uncertainty
50- 54 F5.2 mag zmag HST/ACS F850LP (z-band) Kron AB magnitude
56- 59 F4.2 mag e_zmag zmag uncertainty
61 A1 --- l_[3.6] Limit flag on 3.6um
62- 66 F5.2 mag [3.6] ? Spitzer/IRAC 3.6um AB magnitude from GALFIT
68- 71 F4.2 mag e_[3.6] ? 3.6um uncertainty
73 A1 --- l_[4.5] Limit flag on 4.5um
74- 78 F5.2 mag [4.5] ? Spitzer/IRAC 4.5um AB magnitude from GALFIT
80- 83 F4.2 mag e_[4.5] ? 4.5um uncertainty
85 I1 --- cc The Spitzer confusion class (G1)
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Note (1): From Overzier et al. (2008, Cat. J/ApJ/673/143;
<[OBC2008] NNNN> in Simbad for table 2 or
<[VRM2007] J1338.LAENN> for table 3; see also
Venemans et al., 2007, Cat. J/A+A/461/823).
Note (2): Flag as follows:
e = Lyα Emitters.
f = The 3.6um measurement most probably includes a large contribution
from the Hα emission line halo of the radio galaxy. Applying
a correction for Hα yields a 3.6um continuum magnitude of
21.2±0.1 (see Section 3.1 for details). This is the value
plotted in Figures 5 and 6.
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [OMB2006] ? Object identification Overzier et al.
(2006ApJ...637...58O 2006ApJ...637...58O)
6- 7 A2 --- n_[OMB2006] RG: the radio Galaxy TN J0924-2201 targeted
9- 12 I4 --- [VRO2004] ? Number from Venemans et al.
2004A&A...424L..17V 2004A&A...424L..17V
13 A1 --- n_[VRO2004] [e] e: Lyα emitters
15- 16 I2 h RAh Hour of right ascension (J2000)
18- 19 I2 min RAm Minute of right ascension (J2000)
21- 25 F5.2 s RAs Second of right ascension (J2000)
27 A1 --- DE- Sign of declination (J2000)
28- 29 I2 deg DEd Degree of declination (J2000)
31- 32 I2 arcmin DEm Arcminute of declination (J2000)
34- 38 F5.2 arcsec DEs Arcsecond of declination (J2000)
40 A1 --- l_zmag Limit flag on zmag
41- 45 F5.2 mag zmag HST/ACS F850LP (z-band) Kron AB magnitude
47- 50 F4.2 mag e_zmag ? zmag uncertainty
52 A1 --- l_[3.6] Limit flag on 3.6um
53- 57 F5.2 mag [3.6] ? Spitzer/IRAC 3.6um AB magnitude from GALFIT
59- 62 F4.2 mag e_[3.6] ? 3.6um uncertainty
64 I1 --- cc Spitzer confusion class (G1)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- ID ID (1)
10- 11 I2 h RAh Hour of right ascension (J2000)
13- 14 I2 min RAm Minute of right ascension (J2000)
16- 20 F5.2 s RAs Second of right ascension (J2000)
22 A1 --- DE- Sign of declination (J2000)
23- 24 I2 deg DEd Degree of declination (J2000)
26- 27 I2 arcmin DEm Arcminute of declination (J2000)
29- 33 F5.2 arcsec DEs Arcsecond of declination (J2000)
35- 39 F5.2 mag zmag HST/ACS z-band Kron AB magnitude (F850LP)
41- 44 F4.2 mag e_zmag zmag uncertainty
46 A1 --- l_[3.6] Limit flag on 3.6um
47- 51 F5.2 mag [3.6] ? Spitzer/IRAC 3.6um AB magnitude from GALFIT
53- 56 F4.2 mag e_[3.6] ? 3.6um uncertainty
58 A1 --- l_[4.5] Limit flag on 4.5um
59- 63 F5.2 mag [4.5] ? Spitzer/IRAC 4.5um AB magnitude from GALFIT
65- 68 F4.2 mag e_[4.5] ? 4.5um uncertainty
70 I1 --- cc Spitzer confusion class (G1)
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Note (1): From Zheng et al. (2006ApJ...640..574Z 2006ApJ...640..574Z; <[ZOB2006] A> or
QSO J0836+0054 in Simbad) and Kim et al. (2009ApJ...695..809K 2009ApJ...695..809K;
<[KST2009] ANN> or QSO J1030+0524 in Simbad)
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Global notes:
Note (G1): The Spitzer confusion class as follows:
1 = isolated and detected;
2 = isolated but undetected;
3 = confused, but GALFIT may help;
4 = heavily blended.
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History:
From electronic version of the journal
(End) Emmanuelle Perret [CDS] 08-Nov-2011