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J/PASP/121/1326     uvbyβ photometry in Norma         (Kaltcheva+, 2009)

Stroemgren Hβ photometry of O and B stars in Norma. Kaltcheva N. <Publ. Astron. Soc. Pac., 121, 1326-1333 (2009)> =2009PASP..121.1326K
ADC_Keywords: Stars, nearby ; Stars, O ; Stars, B-type ; Photometry, uvby, beta Abstract: This investigation presents a study of the Galactic structure toward the Norma section of the Milky Way. The field studied is located between 325° and 335° Galactic longitude and -8° to 8° Galactic latitude. New observations in the uvbyβ system are combined with all uvbyβ data currently available to collate a sample of 130 O and B stars. A uniform procedure is applied to obtain the color excesses and stellar distances for all of the stars in the sample. The sample is magnitude limited to about V=9.5mag and contains the brightest stars of the open clusters NGC 6087 and Ly 6, the field 2158 of Loden, the OB association Nor OB1, and stars located in the directions of R 103 and R 105. Description: To collate this sample, all available uvbyβ data of O and B stars within this coordinate range were extracted from the catalog of Hauck & Mermilliod (1998, Cat. II/215) and combined with unpublished uvbyβ photometry of 50 additional O and B stars. This last photometry was obtained during 1994 April 7-21, using the modular photometer on the 0.5m telescope at the Sutherland site of the South African Astronomical Observatory (SAAO), with a pulse-counting system and a set of SAAO filters. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 124 130 The sample organized according to the subgroups identified in Fig. 1
See also: II/215 : uvby-beta Catalogue (Hauck+ 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 12 A12 --- Name Star name 14- 18 A5 --- LC Luminosity class 20- 25 F6.3 mag Vmag V magnitude 27- 32 F6.3 mag b-y Stroemgren b-y colour index 34- 39 F6.3 mag m1 Stroemgren m1 index 41- 46 F6.3 mag c1 Stroemgren c1 index 48- 52 F5.3 mag beta Stroemgren beta index 54- 58 F5.3 mag E(b-y) Colour excess in b-y 60- 65 F6.3 mag V0mag Dereddened V magnitude 67- 72 F6.3 mag (b-y)0 Dereddened b-y colour index 74- 79 F6.3 mag c0 Stroemgren c0 index 81- 85 F5.3 mag m0 Stroemgren m0 index 87- 90 F4.1 mag VMAG Calibrated absolute V magnitude 92- 95 I4 pc r Distance from Sun 96 A1 --- u_r Uncertainty flag on r 98-103 F6.2 deg GLON Galactic longitude 105-109 F5.2 deg GLAT Galactic latitude 111-112 A2 --- src [HM K] Source of photometry (1) 114-124 A11 --- Group Group name, or "Field stars" (2)
Note (1): Source as follows: HM = Hauck & Mermilliod, Cat II/215 K = new data Note (2): groups are: Ly 6 (Lynga 1964MeLu2.141....1L); Lod 2158 (Loden 1979A&AS...36...83L); NGC 6087 (Schmidt 1980AJ.....85..158S); R 103 = RCW 103 (1960MNRAS.121..103R); R 105 = RCW 105 (1960MNRAS.121..103R); Nor OB1 = Norma OB1 grouping
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 18-Oct-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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