J/MNRAS/425/2116 Arizona CDFS Environment Survey, ACES (Cooper+, 2012)
The Arizona CDFS Environment Survey (ACES): A Magellan/IMACS spectroscopic
survey of the Chandra Deep Field-South.
Cooper M.C., Yan R., Dickinson M., Juneau S., Lotz J.M., Newman J.A.,
Papovich C., Salim S., Walth G., Weiner B.J., Willmer C.N.A.
<Mon. Not. R. Astron. Soc., 425, 2116-2127 (2012)>
=2012MNRAS.425.2116C 2012MNRAS.425.2116C
ADC_Keywords: Surveys ; Galaxy catalogs ; Redshifts
Keywords: catalogues - surveys - galaxies: distances and redshifts
Abstract:
We present the Arizona CDFS Environment Survey (ACES), a recently
completed spectroscopic redshift survey of the Chandra Deep
Field-South (CDFS) conducted using the Inamori-Magellan Areal Camera
and Spectrograph on the Magellan-Baade telescope. In total, the survey
targeted 7277 unique sources down to a limiting magnitude of
RAB=24.1, yielding 5080 secure redshifts across the ∼30'x30'
extended CDFS region. The ACES data set delivers a significant
increase to both the spatial coverage and the sampling density of the
spectroscopic observations in the field. Combined with previously
published spectroscopic redshifts, ACES now creates a highly complete
survey of the galaxy population at R<23, enabling the local galaxy
density (or environment) on relatively small scales (∼1Mpc) to be
measured at z<1 in one of the most heavily studied and data-rich
fields in the sky. Here, we describe the motivation, design and
implementation of the survey and present a preliminary redshift and
environment catalogue. In addition, we utilize the ACES spectroscopic
redshift catalogue to assess the quality of photometric redshifts from
both the COMBO-17 and Multiwavelength Survey by Yale-Chile imaging
surveys of the CDFS.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 61 40 Slitmask observation information
table2.dat 83 12983 ACES redshift catalogue
table3.dat 62 4131 ACES environment catalogue
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See also:
II/253 : Chandra Deep Field South: multi-colour data (Wolf+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Mask Name of the IMACS slitmask
9- 18 A10 "YYYY/MM/DD" Date Observation date (UT)
20- 21 I2 h RAh Slitmask center right ascension (J2000)
23- 24 I2 min RAm Slitmask center right ascension (J2000)
26- 31 F6.3 s RAs Slitmask center right ascension (J2000)
33 A1 --- DE- Slitmask center Declination sign (J2000)
34- 35 I2 deg DEd Slitmask center Declination (J2000)
37- 38 I2 arcmin DEm Slitmask center Declination (J2000)
40- 44 F5.2 arcsec DEs Slitmask center Declination (J2000)
46- 48 I3 deg PA Position angle of the slitmask (E of N)
50- 52 I3 --- N0 Number of targets on slitmask.
54- 56 I3 --- Nz Number of secure (Q = -1, 3, 4) redshifts
measured on slitmask
58- 61 I4 s ExpTime Total exposure time for slitmask
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq [121/63431] Object identification number in the
R-band catalogue of Wolf et al. (2004,
Cat. II/253)
7- 15 F9.6 deg RAdeg Right ascension (J2000) (1)
17- 26 F10.6 deg DEdeg Declination (J2000) (1)
28- 32 F5.2 mag Rmag R-band magnitude in the AB system (1)
34- 40 A7 --- Mask Name of the IMACS slitmask on which the object
was observed
42- 44 I3 --- Slit Number of slit on the IMACS slitmask
corresponding to the object
46- 52 F7.1 d MJD Modified Julian date of observation
54 I1 --- Flag [0/1] Targeting flag:
0 = main R-band selected target;
1 = Spitzer/MIPS 70um target
56- 62 F7.5 --- z ?=- Redshift derived from the observed spectrum
64- 70 F7.5 --- zhel ?=- Heliocentric-frame redshift.
72- 73 I2 --- Q [-2/4] Redshift quality code, 4=best (2)
75- 81 F7.5 --- zalt ?=- Alternate redshift from literature
83 I1 --- r_zalt ?=- Source of alternate redshift (G1)
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Note (1): from Wolf et al. (2004, Cat. II/253).
Note (2): Redshift quality code as follows:
-2 = unknown
-1 = star (redshift close to zero)
1 = unknown
3 = ∼90 per cent confidence
4 = ∼95 per cent confidence
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Seq Object identification number (SEQ) in the
R-band catalogue of Wolf et al. (2004, II/253)
7- 12 F6.4 --- zhel Redshift (in the heliocentric frame)
14 I1 --- r_zhel Source of redshift (G1)
16- 20 F5.3 Mpc Dedge Distance from the nearest survey edge
(h-1 comoving Mpc)
22- 27 F6.3 [-] lg(1+d3) Overdensity as given by the third-nearest-
neighbour surface density, ACES only tracer
29- 34 F6.3 [-] lg(1+d4) Overdensity as given by the fourth-nearest-
neighbour surface density, ACES only tracer
36- 41 F6.3 [-] lg(1+d5) Overdensity as given by the fifth-nearest-
neighbour surface density, ACES only tracer
43- 48 F6.3 [-] lg(1+d3)2 Overdensity as given by the third-nearest-
neighbour surface density, ACES + zpublic tracer
50- 55 F6.3 [-] lg(1+d4)2 Overdensity as given by the fourth-nearest-
neighbour surface density, ACES + zpublic tracer
57- 62 F6.3 [-] lg(1+d5)2 Overdensity as given by the fifth-nearest-
neighbour surface density, ACES + zpublic tracer
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Global notes:
Note (G1): References as follows:
1 = DEEP2/DEIMOS
2 = Le Fevre et al. (2004, Cat. J/A+A/428/1043)
3 = Vanzella et al. (2005, Cat. J/A+A/434/53)
4 = Vanzella et al. (2006, Cat. J/A+A/454/423)
5 = Mignoli et al. (2005, Cat. J/A+A/437/883)
6 = Ravikumar et al. (2007, Cat. J/A+A/465/1099)
7 = Szokoly et al. (2004, Cat. J/ApJS/155/271)
8 = Popesso et al. (2009A&A...494..443P 2009A&A...494..443P)
9 = Balestra et al. (2010, Cat. J/A+A/512/A12)
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Nomenclature note:
Sources identified as [WDK2001] NNNNN in Simbad.
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 01-Aug-2013