J/A+AS/146/365 O & B stars uvby-Hbeta photometry. III. (Kaltcheva+, 2000)
Stroemgren and Hβ photometry of O and B type stars in star-forming regions.
III. Carina Spiral Feature
Kaltcheva N.T., Olsen E.H., Clausen J.V.
<Astron. Astrophys. Suppl. Ser. 146, 365 (2000)>
=2000A&AS..146..365K 2000A&AS..146..365K
ADC_Keywords: Stars, early-type ; Photometry, uvby, beta
Keywords: stars: early type -
open clusters and associations: Carina Spiral Feature
Abstract:
Stroemgren and Hβ photometry of O and B type stars, generally
brighter than 9.5 mag is reported for the field of the Carina Spiral
Feature. The observations are based on the PPM (Cat. I/193) catalogue
identifications and are designed to improve the completeness of the
existing uvbyβ data for the bright early-type stars in the field.
We present new uvby photometry for 283 stars and Hβ photometry
for 225 of them. These observations are part of an ongoing effort to
study the structure of selected star-forming regions in the Milky Way
by means of uvbyβ photometry. A comparison of the new data to
other uvbyβ data sets for this field is presented.
Description:
Table 1: Catalogue of Stroemgren photometry for 283 program stars in
the field of the Carina Spiral Feature. The PPM identifications are
given in the first column. Columns 2, 4, 6, and 8 give V, b-y, m1, and
c1, respectively. Columns 3, 5, 7, and 9 give the internal rms errors
of one observation (weight 1). In columns 10 and 11 the weight of V
and the indices are listed, respectively. Column 12 gives the number
of nights for each star. Columns 13 and 14 show the
cross-identification with the HD and LS numbers.
Table 2: Hβ photometry for 225 program stars in the field of the
Carina Spiral Feature. The PPM identifications are given in the first
column, and the photometry follows in column 2. Column 3 gives the
internal rms errors of one observation (weight 1). In columns 4 and 5
the weight of the Hβ indices and the number of the nights for
each star are listed, respectively. Columns 6 and 7 show the
cross-identification with the HD and LS numbers.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 96 283 The uvby catalogue
table2.dat 50 225 The Hβ catalogue
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See also:
J/A+A/352/600 : O + B stars uvby-Hbeta photometry. I. (Kaltcheva+, 1999)
J/A+A/352/605 : O + B stars uvby-Hbeta photometry. II. (Kaltcheva+, 1999)
J/A+AS/128/309 : ubvy-beta phot. of CarOB1 and CarOB2 stars (Kaltcheva 1998)
I/193 : Positions and Proper Motions - South (Bastian+ 1993)
III/135 : HD Catalogue and Extension (Cannon+ 1918-24; ADC 1989)
III/43 : Luminous Stars in the Southern Milky Way (Stephenson+ 1971)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- PPM PPM (Cat. I/193) number
9- 14 F6.3 mag Vmag Transformed to the standard Johnson V mag
17- 21 F5.3 mag e_Vmag Mean error on V mag
23- 28 F6.3 mag (b-y) Stroemgren colour index
31- 35 F5.3 mag e_(b-y) Mean error on (b-y)
37- 42 F6.3 mag m1 m1 (=(v-b)-(b-y)) colour index
45- 49 F5.3 mag e_m1 Mean error on m1
51- 56 F6.3 mag c1 c1 (=(u-v)-(v-b)) colour index
59- 63 F5.3 mag e_c1 Mean error on c1
67 I1 --- w_Vmag Weight of Vmag
71 I1 --- w_(b-y) Weight of 4-colour indices
74 I1 --- o_Vmag Number of nights of observations
79- 84 I6 --- HD ? HD (Cat. III/135) number
89- 92 I4 --- LS ? LS (Cat. III/43) number
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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- 6 I6 --- PPM PPM (Cat. I/193) number
9- 13 F5.3 mag beta Hβ index
16- 20 F5.3 mag e_beta Mean error on Hβ index
24 I1 --- w_beta Weight of Hβ index
27 I1 --- o_beta Number of nights
33- 38 I6 --- HD ? HD (Cat. III/135) number
43- 46 I4 --- LS ? LS (Cat. III/43) number
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Acknowledgements: Nadia Kaltcheva
(End) Patricia Bauer [CDS] 23-Oct-2000