J/A+A/397/361 15-color BATC photometry of Landolt SA95 field (Zhou+, 2003)
15 colour photometry of Landolt SA95 standard star field.
Zhou X., Jiang Z., Ma J., Xue S., Wu H., Chen J., Zhu J., Sun W.,
Windhorst R.A.
<Astron. Astrophys. 397, 361 (2003)>
=2003A&A...397..361Z 2003A&A...397..361Z
ADC_Keywords: Clusters, galaxy ; Galaxies, photometry ; Photometry, CCD
Keywords: galaxies: clusters - galaxies: elliptical and lenticular, cD -
galaxies: fundamental parameters - galaxies: photometry -
galaxies: distances and redshifts -
cosmology: large-scale structure of Universe
Abstract:
In this paper, we present a set of photometric observations in 15
colors of stars in the Landolt SA95 field with the BATC
(Beijing-Arizona-Taipei-Connecticut) system. The wavelengths covered
by the system range from 300nm to 1000nm. Visual magnitudes of the
stars studied in the field are from the 10th to 20th mag. The
observational methodology and the data reduction procedures are
described. The relationships between the BATC intermediate-band system
and the Landolt UBVRI broad band system are obtained. A catalogue of
the photometry has been produced which contains the spectral energy
distributions (SEDs) of 3613 stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table4.dat 44 48 The position and name of the SA95 standard stars
used for system conversion
table5.dat 92 48 The SED of the Landolt standard stars
catalog.dat 243 3613 Photometric parameters for 210 galaxies
in 17 clusters
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See also:
J/PAZh/27/403 : CCD R photometry in the UMa supercluster (Kopylova+, 2001)
J/AJ/112/628 : Deep Wide-Field Spectrophotometry of M67 (Fan+ 1996)
J/AJ/122/1718 : Multicolor photometry in Abell 2634 (Yuan+, 2001)
Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Seq [1/48] Sequential number
4- 5 I2 h RAh Right ascension (J2000.0)
7- 8 I2 min RAm Right ascension (J2000.0)
10- 14 F5.2 s RAs Right ascension (J2000.0)
16 A1 --- DE- Declination sign (J2000.0)
17- 18 I2 deg DEd Declination (J2000.0)
20- 21 I2 arcmin DEm Declination (J2000.0)
23- 26 F4.1 arcsec DEs Declination (J2000.0)
28- 33 A6 --- SA Landolt (1992AJ....104..340, Cat. II/183)
Name (95 NNN = SA 95-NNN in Simbad)
35- 37 A3 --- [GTJ2000] Galadi-Enriquez et al. (2000,
Cat. J/A+AS/146/169) name
(p N = [GTJ2000] 3- N in Simbad)
39- 44 A6 --- SA95 Landolt (1983AJ.....88..439L 1983AJ.....88..439L, Cat. II/118)
(SA NNN = SA 95-NNN in Simbad)
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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- 2 I2 --- Seq [1/48] Sequential number
4- 8 F5.2 mag amag Magnitude in a (337.15nm) band
10- 14 F5.2 mag bmag Magnitude in b (390.69nm) band
16- 20 F5.2 mag cmag Magnitude in c (419.35nm) band
22- 26 F5.2 mag dmag Magnitude in d (454.00nm) band
28- 32 F5.2 mag emag ?=00.00 Magnitude in e (492.50nm) band (1)
34- 38 F5.2 mag fmag ?=00.00 Magnitude in f (526.68nm) band (1)
40- 44 F5.2 mag gmag ?=00.00 Magnitude in g (578.99nm) band (1)
46- 50 F5.2 mag hmag ?=00.00 Magnitude in h (607.39nm) band (1)
52- 56 F5.2 mag imag ?=00.00 Magnitude in i (665.59nm) band (1)
58- 62 F5.2 mag jmag ?=00.00 Magnitude in j (705.74nm) band (1)
64- 68 F5.2 mag kmag ?=00.00 Magnitude in k (754.63nm) band (1)
70- 74 F5.2 mag mmag ?=00.00 Magnitude in m (802.32nm) band (1)
76- 80 F5.2 mag nmag ?=00.00 Magnitude in n (848.43nm) band (1)
82- 86 F5.2 mag omag ?=00.00 Magnitude in o (918.22nm) band (1)
88- 92 F5.2 mag pmag ?=00.00 Magnitude in p (973.85nm) band (1)
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Note (1): The value of 00.00 means that there is no measurement because
the star is too bright and saturated in this filter band.
The magnitude error of these stars is estimated to be 0.03.
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Byte-by-byte Description of file: catalog.dat
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Bytes Format Units Label Explanations
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1 A1 --- Note Individual note (1)
2- 6 I5 --- Seq Sequential number
8- 9 I2 h RAh Right Ascension J2000 (hours)
10 A1 --- --- [:]
11- 12 I2 min RAm Right Ascension J2000 (minutes)
13 A1 --- --- [:]
14- 18 F5.2 s RAs Right Ascension J2000 (seconds)
20 A1 --- DE- Declination J2000 (sign)
21- 22 I2 deg DEd Declination J2000 (degrees)
23 A1 --- --- [:]
24- 25 I2 arcmin DEm Declination J2000 (minutes)
26 A1 --- --- [:]
27- 30 F4.1 arcsec DEs Declination J2000 (seconds)
32- 36 F5.2 mag amag The magnitude in a (337.15nm) band
38- 42 F5.2 mag bmag The magnitude in b (390.69nm) band
44- 48 F5.2 mag cmag The magnitude in c (419.35nm) band
50- 54 F5.2 mag dmag The magnitude in d (454.00nm) band
56- 60 F5.2 mag emag The magnitude in e (492.50nm) band
62- 66 F5.2 mag fmag The magnitude in f (526.68nm) band
68- 72 F5.2 mag gmag The magnitude in g (578.99nm) band
74- 78 F5.2 mag hmag The magnitude in h (607.39nm) band
80- 84 F5.2 mag imag The magnitude in i (665.59nm) band
86- 90 F5.2 mag jmag The magnitude in j (705.74nm) band
92- 96 F5.2 mag kmag The magnitude in k (754.63nm) band
98-102 F5.2 mag mmag The magnitude in m (802.32nm) band
104-108 F5.2 mag nmag The magnitude in n (848.43nm) band
110-114 F5.2 mag omag The magnitude in o (918.22nm) band
116-120 F5.2 mag pmag The magnitude in p (973.85nm) band
122 A1 --- n_amag [X] See note (2)
123-126 F4.2 mag e_amag rms uncertainty on a (337.15nm) band
128 A1 --- n_bmag [X] See note (2)
129-132 F4.2 mag e_bmag rms uncertainty on b (390.69nm) band
134 A1 --- n_cmag [X] See note (2)
135-138 F4.2 mag e_cmag rms uncertainty on c (419.35nm) band
140 A1 --- n_dmag [X] See note (2)
141-144 F4.2 mag e_dmag rms uncertainty on d (454.00nm) band
146 A1 --- n_emag [X] See note (2)
147-150 F4.2 mag e_emag rms uncertainty on e (492.50nm) band
152 A1 --- n_fmag [X] See note (2)
153-156 F4.2 mag e_fmag rms uncertainty on f (526.68nm) band
158 A1 --- n_gmag [X] See note (2)
159-162 F4.2 mag e_gmag rms uncertainty on g (578.99nm) band
164 A1 --- n_hmag [X] See note (2)
165-168 F4.2 mag e_hmag rms uncertainty on h (607.39nm) band
170-174 F5.2 mag e_imag rms uncertainty on i (665.59nm) band
176-180 F5.2 mag e_jmag rms uncertainty on j (705.74nm) band
182-186 F5.2 mag e_kmag rms uncertainty on k (754.63nm) band
188 A1 --- n_mmag [X] See note (2)
189-192 F4.2 mag e_mmag rms uncertainty on m (802.32nm) band
194 A1 --- n_nmag [X] See note (2)
195-198 F4.2 mag e_nmag rms uncertainty on n (848.43nm) band
200 A1 --- n_omag [X] See note (2)
201-204 F4.2 mag e_omag rms uncertainty on o (918.22nm) band
206 A1 --- n_pmag [X] See note (2)
207-210 F4.2 mag e_pmag rms uncertainty on p (973.85nm) band
213-229 A17 --- USNO USNO designation
231-234 F4.1 mag Bmag ? USNO B magnitude
235 A1 --- --- [B]
237-240 F4.1 mag Rmag ? USNO R magnitude
241 A1 --- --- [R]
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Note (1): The center is at 03:54:16.88 +00:19:08.1. The symbols are:
b: (saturated) bright star, the coordinates may not be correct.
d: Affected by environment (The ghost of the image, bad pixel, etc.)
e: The position of the star is near edge of the image.
f: The star is very faint but visible.
g: galaxies
m: May be mixed with nearby star
n: Difficult to see star in the image
s: Affected by nearby saturated bright stars
t: Affected by nearby galaxies
x: Not sure to be a real star
Note (2): For some faint stars, the magnitude of aperture photometry
are used instead of PSF fitting. A "X" indicates that the magnitude is
obtained by aperture photometry and has been corrected to PSF magnitude.
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Acknowledgements: Xu Zhou
References:
Yan et al., Calibration of the BATC survey, 2000PASP..112..691Y 2000PASP..112..691Y
Zhou et al., Flux calibration of the BATC survey, 2001ChJAA...1..372Z 2001ChJAA...1..372Z
(End) Patricia Bauer [CDS] 22-Nov-2002