J/A+AS/118/441 Virgo & Fornax clusters galaxies UBVRI data (Schroeder+ 1996)
New aperture photometry for 217 galaxies in the Virgo and Fornax clusters.
Schroeder A., Visvanathan N.
<Astron. Astrophys. Suppl. Ser. 118, 441 (1996)>
=1996A&AS..118..441S 1996A&AS..118..441S (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Photometry, UBVRI
Keywords: galaxies, photometry - galaxies, clusters: Virgo, Fornax
Description:
We present photoelectric multi-aperture photometry in UBVRI of 171
and 46 galaxies in the Virgo and Fornax clusters, respectively. Many
of the galaxies have not been observed in at least one of these
passbands before. We discuss the reduction and transformation into the
Cousins photometric system as well as the extinction coefficients
obtained between 1990 and 1993.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2 67 147 List of standard stars
table2.tex 156 216 LaTeX version of table2
table5 120 812 Virgo and Fornax clusters aperture data
table5a.tex 168 656 LaTeX version of table5, first part
table5b.tex 177 480 LaTeX version of table5, second part
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Byte-by-byte Description of file: table2
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Bytes Format Units Label Explanations
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1 A1 --- n_star [*] * for stars observed with the S20 tube
2- 11 A10 --- star Standard star name
12- 17 F6.3 mag Vmag Standard V magnitude
19- 24 F6.3 mag B-V Standard (B-V) magnitude
26- 31 F6.3 mag DVmag Difference of our mean observed V magnitude
and the standard value
33- 35 I3 --- o_Vmag Number of useful observations
37- 42 F6.3 mag D(U-B) Difference of our mean observed (U-B) colour
and the standard value
44- 49 F6.3 mag D(B-V) Difference of our mean observed (B-V) colour
and the standard value
51- 56 F6.3 mag D(V-R) Difference of our mean observed (V-R) colour
and the standard value
58- 63 F6.3 mag D(R-I) Difference of our mean observed (R-I) colour
and the standard value
65- 67 I3 --- o_UBVRI Number of useful observations of colours (can
vary slightly from one colour to the next)
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Byte-by-byte Description of file: table5
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Bytes Format Units Label Explanations
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1- 7 A7 --- No Identification of the galaxy by the number
of the respective catalogue:
VCC: Binggeli et al. =1985AJ.....90.1681B 1985AJ.....90.1681B
FCC: Ferguson et al. =1989AJ.....98..367F 1989AJ.....98..367F
9- 18 A10 --- Name Name of the galaxy (NGC, IC, ESO, UGC or
other identifications)
20- 21 I2 h RAh Right ascension (1950)
22- 23 I2 min RAm Right ascension (1950)
24- 27 F4.1 s RAs Right ascension (1950)
28 A1 --- DE- Declination sign
29- 30 I2 deg DEd Declination (1950)
31- 32 I2 arcmin DEm Declination (1950)
33- 34 I2 arcsec DEs Declination (1950)
36- 51 A16 --- Mtype Morphological galaxy type (if available
from VCC and FCC, else from RC3)
53- 57 F5.1 arcsec Ap Aperture size
59- 63 F5.3 [0.1arcmin] logAp Logarithm of the aperture
65- 67 I3 --- Rot Total integration time in units of rotations
of the filter wheel(1)
70- 74 F5.2 mag Bmag B magnitude
75- 76 A2 --- n_Bmag [:) ] Note on Bmag (2)
79- 83 F5.2 mag U-B U-B colour
84- 85 A2 --- n_U-B [:) ] Note on U-B (2)
87- 91 F5.2 mag B-V B-V colour
92- 93 A2 --- n-B-V [:) ] Note on B-V (2)
95- 99 F5.2 mag V-R V-R colour
100-101 A2 --- n_V-R [:) ] Note on V-R (2)
103-107 F5.2 mag R-I R-I colour
108-109 A2 --- n_R-I [:) ] Note on R-I (2)
111-118 A8 --- Notes Notes (3)
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Note (1): One rotation corresponds to 4.418, 0.940, 0.752, 0.752 and
1.128 sec for the U, B, V, R and I filter, respectively
Note (2): A colon indicates a signal-to-noise error of 0.10mag and more;
bracket is used for data that has been excluded from further data
reduction for various reasons, such as
a) too low exposure times,
b) exceptionally high sky counts (i.e., a large aperture),
c) a bright star in the aperture was not measured or light from
a star scattered into or out of the aperture,
d) the aperture was not centered accurately,
e) error too high.
Sometimes only one or two passbands were affected.
All data followed by bracket should be rejected.
Note (3): A star indicates if a star (or more than one star) was included in
and subtracted from the aperture.
S20 indicates that the aperture was observed with the S20 tube.
Brackets after S20 indicate an aperture that was partly observed
with the S20 and with the GaAs tube.
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Courtesy: Anja Schroeder
(End) Patricia Bauer [CDS] 30-Apr-1996