J/other/RAA/10.1 BATC photometry in A98 cluster (Zhang+, 2010)
Multicolor photometry of the galaxy cluster A98:
substructures and star formation properties.
Zhang L., Yuan Q.-R., Zhou X., Jiang Z.-J., Yang Y.-B., Ma J., Wu J.-H.,
Wu Z.-Y.
<Res. Astron. Astrophys., 10, 1-21 (2010)>
=2010RAA....10....1Z 2010RAA....10....1Z
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Redshifts
Keywords: galaxies: clusters: individual (A98) -
galaxies: distances and redshifts -
galaxies: kinematics and dynamics - galaxies: evolution -
methods: data analysis
Abstract:
An optical photometric observation with the
Beijing-Arizona-Taiwan-Connecticut (BATC) multicolor system is carried
out for A98 (z=0.104), a galaxy cluster with two large enhancements
in X-ray surface brightness. Spectral energy distributions (SEDs)
covering 15 intermediate bands are obtained for all sources detected
down to V∼20mag in a field of 58'x58'. After star-galaxy separation
with color-color diagrams, a photometric redshift technique is applied
to the galaxy sample for further membership determination. The
color-magnitude relation is taken as a further restriction of the
early-type cluster galaxies. As a result, a list of 198 faint member
galaxies is achieved. Based
Description:
From 1996 to 2006, we accumulated 37h in only 12 bands, from d to p,
with the old CCD camera. In the last two years, exposures in the a, b,
and c filters were completed with the new CCD camera.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 37 15 Parameters of the BATC filters and the
observational statistics of A98
table2.dat 31 74 Catalog of spectroscopically confirmed member
galaxies in A98
table3.dat 125 198 Catalog of 198 newly-selected candidates of
member galaxies in A98
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- No Filter number
4 A1 --- Filt Filter name
6- 9 I4 0.1nm lambdac Central wavelength
11- 13 I3 0.1nm FWHM Filter full width half maximum (FWHM)
15- 19 I5 s TExp Exposure time
21- 22 I2 --- Nimg Number of images
24- 27 F4.2 arcsec Seeing Seeing of the combined images
29- 32 I4 --- Nobj Number of object detected
34- 37 F4.1 mag mag Completeness magnitude
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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- 2 I2 --- No Number
4 I1 h RAh Right ascension (J2000)
6- 7 I2 min RAm Right ascension (J2000)
9- 12 F4.1 s RAs Right ascension (J2000)
14 A1 --- DE- Declination sign (J2000)
15- 16 I2 deg DEd Declination (J2000)
18- 19 I2 arcmin DEm Declination (J2000)
21- 22 I2 arcsec DEs Declination (J2000)
24- 29 F6.4 --- zsp Spectroscopic redshift
31 I1 --- Ref Reference (1)
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Note (1): References as follows:
1 = Pinkney et al. (2000, Cat. J/AJ/120/2269)
2 = Zabludoff et al. (1990ApJS...74....1Z 1990ApJS...74....1Z)
3 = Beers et al. (1982ApJ...257...23B 1982ApJ...257...23B)
4 = Bettoni et al. (2006A&A...452..811B 2006A&A...452..811B)
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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- 3 I3 --- Seq [1/198] Sequential number
5 I1 h RAh Right ascension (J2000)
7- 8 I2 min RAm Right ascension (J2000)
10- 14 F5.2 s RAs Right ascension (J2000)
16 A1 --- DE- Declination sign (J2000)
17- 18 I2 deg DEd Declination (J2000)
20- 21 I2 arcmin DEm Declination (J2000)
23- 27 F5.2 arcsec DEs Declination (J2000)
29- 33 F5.3 --- zph Photometric redshift
35 I1 --- T [1/7] Classification index (1)
37- 41 F5.2 mag amag BATC a band (3360Å) magnitude
43- 47 F5.2 mag bmag BATC b band (3890Å) magnitude
49- 53 F5.2 mag cmag BATC c band (4210Å) magnitude
55- 59 F5.2 mag dmag BATC d band (4550Å) magnitude
61- 65 F5.2 mag emag BATC e band (4920Å) magnitude
67- 71 F5.2 mag fmag BATC f band (5270Å) magnitude
73- 77 F5.2 mag gmag BATC g band (5795Å) magnitude
79- 83 F5.2 mag hmag BATC h band (6075Å) magnitude
85- 89 F5.2 mag imag BATC i band (6660Å) magnitude
91- 95 F5.2 mag jmag BATC j band (7050Å) magnitude
97-101 F5.2 mag kmag BATC k band (7490Å) magnitude
103-107 F5.2 mag mmag BATC m band (8020Å) magnitude
109-113 F5.2 mag nmag BATC n band (8480Å) magnitude
115-119 F5.2 mag omag BATC o band (9190Å) magnitude
121-125 F5.2 mag pmag BATC p band (9745Å) magnitude
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Note (1): Classification index is
1 = E;
2 = SO;
3 = Sa;
4 = Sb;
5 = Sc;
6 = Sd;
7 = Im
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History:
* 01-Dec-2011: From electronic version of the journal
* 20-Dec-2013: Missing source 74 added in table2.dat
(End) Patricia Vannier [CDS] 31-Oct-2011