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J/A+AS/106/257 Stroemgren photometry of F- and G-type stars bright (Olsen 1994)
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Stroemgren photometry of F- and G-type stars brighter than V=9.6.
I. uvby photometry
Olsen E.H.
<Astron. Astrophys. Suppl. Ser. 106, 257 (1994)>
=1994A&AS..106..257O (SIMBAD/NED Reference)
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ADC_Keywords: Stars, F-type; Stars, G-type; Photometry, special systems
Keywords: Galaxy: solar neighbourhood - stellar content - stars: late type -
fundamental parameters - catalogues
Abstract:
Within the framework of a large photometric observing program, designed to
investigate the Galaxy's structure and evolution, H{beta} photometry is
being made for about 9000 stars. As a by-product, supplementary uvby
photometry has been made. The results are presented in a catalogue
containing 6924 uvby observations of 6190 stars, all south of
{delta}=+38deg. The overall internal rms errors of one observation
(transformed to the standard system) of a program star in the interval
6.5<V<8.5 are 0.0046, 0.0028, 0.0039, and 0.0056, respectively, in V, b-y,
m_1_ , and c_1_ . The catalogue has been compared to two earlier catalogues
published within the same observing program.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table7 126 110 Catalogue of 110 uvby standards stars
table9 124 6190 The catalogue
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Byte-by-byte Description of file: table7
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD [1/225300]+= HD (Henry Draper) designation
7- 10 A4 --- Mult Identification of visual double star
components included in the diaphragm
14- 19 F6.3 mag V transformed to the standard Johnson V mag.
22- 26 F5.3 mag e_V mean error on V
31- 36 F6.3 mag b-y
39- 43 F5.3 mag e_(b-y) mean error on (b-y)
48- 53 F6.3 mag m1 = (v-b) - (b-y)
56- 60 F5.3 mag e_(m1) mean error on m1
65- 70 F6.3 mag c1 = (u-v) - (v-b)
73- 77 F5.3 mag e_(c1) mean error on c1
80- 82 I3 --- w_V weight of V
84- 86 I3 --- w_col weight of 4-colour indices
88- 90 I3 --- NN Number of nights
94- 99 F6.3 mag D(V) Difference V(standard) - V(transformed)
103-108 F6.3 mag D(b-y) Difference (b-y)(st) - (b-y)(tr)
112-117 F6.3 mag D(m1) Difference m1(st) - m1(tr)
121-126 F6.3 mag D(c1) Difference c1(st) - c1(tr)
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Byte-by-byte Description of file: table9
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD [1/225300]+=? HD (Henry Draper) designation
NB! This column may be blank
7- 10 A4 --- Mult Identification of visual double star
components included in the diaphragm
13 A1 --- Prog [FGCHYOL*] Program star list
F = star from A&AS 54, 55 (F-star catalog)
G,C,H,Y,O,L or * = star from A&AS 102, 89 (1)
17- 27 A11 --- DM Durchmusterung identification
(BD, CD or CP in bytes 17-18;
SZZNNNNN on bytes 19-26;
appended letter in byte 27
NB! This column may be blank
28- 38 A11 --- ID Alternative identification
39 A1 --- T [DGCW% ] Transformation group
(see A&AS 102, 94, sects. 4.4 and 5.1)
D = GKV group,
G or C = GKIII group,
% W or blank = BAF group
44- 49 F6.3 mag V transformed to the standard Johnson V mag.
52- 56 F5.3 mag e_V mean error on V
61- 66 F6.3 mag b-y on standard system
69- 73 F5.3 mag e_(b-y) mean error on (b-y)
78- 83 F6.3 mag m1 on standard system
86- 90 F5.3 mag e_(m1) mean error on m1
95-100 F6.3 mag c1 on standard system
103-107 F5.3 mag e_(c1) mean error on c1
110-112 I3 --- w_V weight of V
114-116 I3 --- w_col weight of 4-colour indices
118-120 I3 --- NN Number of nights
124 A1 --- Note [* ]
* = individual note (see paper)
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Note (1):
G = G-type star
C = Calibration star
H = Backup program
L = Luyten NGP star
Y = Hyades star
O = Coma star
* = miscellaneous reasons
see A&AS 102, 99, sect. 5.1 for details
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Courtesy: Erik H. Olsen <eho@bro835.astro.ku.dk>
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(End) Erik Heyn Olsen [CDS] 13-Jun-1994