J/AJ/105/499 OB Associations and Spiral Structure in M33 (Regan+ 1993)
OB Associations and Spiral Structure in the Southern Arm of M33
Regan M.W., Wilson C.D.
<Astron. J. 105, 499 (1993)>
=1993AJ....105..499R 1993AJ....105..499R
ADC_Keywords: Galaxies, nearby - Photometry, UBV
Description:
This file contains UBV photometry for the brightest stars in the southern
spiral arm of M33. All stars brighter than V=21 are included in this file.
For details on the observations and data reduction see reference. All the
data is in ASCII format of the file.
The observations where carried out on the Palomar 60in. telescope.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 87 2018 The observations
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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2- 5 I4 --- ID [1/2018]+ Star ID
8 I1 h RAh Right Ascension (1950)
10- 11 I2 min RAm Right Ascension (1950)
13- 16 F4.1 s RAs Right Ascension (1950)
18- 21 I4 pix X X Coordinate
23- 27 F5.2 mag V V band Magnitude
29- 33 F5.2 mag B B band Magnitude
35- 39 F5.2 mag U ? U band Magnitude (blank if undetermined)
41- 45 F5.2 mag B-V B-V Magnitude
47- 51 F5.2 mag U-B ? U-B Magnitude (blank if undetermined)
53- 54 I2 --- ass [22/58]? Association number containing star
56 A1 --- DE- Sign of Declination (1950)
57- 58 I2 deg DEd [30] Declination (1950)
60- 61 I2 arcmin DEm Declination (1950)
63- 64 I2 arcsec DEs Declination (1950)
66- 69 I4 pix Y Y Coordinate
72- 75 F4.2 mag e_V V uncertainty
78- 81 F4.2 mag e_B B uncertainty
84- 87 F4.2 mag e_U ? U uncertainty (blank if undetermined)
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(End) M. W. Regan and N. G. Roman [NASA/NSSDC/ADC] 1994-08-09