II/175 Catalogue of 166 Ultraviolet Extinction Curves (Krelowski+ 1992)
Catalogue of 166 Ultraviolet Extinction Curves Krelowski J., Papaj J., Wegner W. <CDS Inf. Bull. No. 41, p. 23 (1992)> Papaj J., Krelowski J. and Wegner W. <Mon. Not. R. Astron. Soc., 252, 403 (1991)> =1991MNRAS.252..403P
ADC_Keywords: Photometry, ultraviolet Description (from CDS): The catalogue includes 166 extinction curves derived from low resolution ultraviolet spectra. The sample contains stars earlier than B6 (mainly dwarfs and giants), which were available in the set of spectra obtained with the Sky Survey telescope (S2/68) in the ESRO TD-1 satellite (Jamar et al. 1977, Cat. III/39; Macau-Hercot et al. 1978, Cat. II/86). The extinction curves cover the wavelength range 1360-2540Å (7.35-3.94um-1) and yielding 60 data points. They are normalized to the broad band (∼300Å) photometric measurements centered at 2740Å (3.65um-1). A special system of standards ("artificial standards - Papaj, Wegner and Krelowski (1990MNRAS.246..408P)) have been used. It made possible to calculate extinction curves for reddening as small as E(B-V) ∼ 0.05. The procedure has been fully described by Papaj, Wegner and Krelowski (1991MNRAS.252..403P). The catalogue may be useful both to obtain intrinsic stellar atmosphere parameters (when dereddened spectra are needed) and to determine properties of dust in single interstellar clouds. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 97 166 Primary Data for Program Stars extinct.dat 28 10013 Extinction Data
See also: III/39 : UV Bright Star Spectrophotometric Catalog (Jamar+, 1976) II/59 : Catalogue of stellar UV fluxes (TD1) (Thompson+ 1978) II/86 : UV Bright-Star Spectrophotometric Supplement (Macau-Hercot+ 1978) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD (Cat. III/135) number 9- 10 I2 h RAh Right Ascension J2000 (hours) 12- 13 I2 min RAm Right Ascension J2000 (minutes) 15- 18 F4.1 s RAs Right Ascension J2000 (seconds) 21 A1 --- DE- Declination J2000 (sign) 22- 23 I2 deg DEd Declination J2000 (degrees) 25- 26 I2 arcmin DEm Declination J2000 (') 28- 29 I2 arcsec DEs Declination J2000 (") 32- 37 F6.2 deg GLON Galactic longitude (in degrees) 40- 45 F6.2 deg GLAT Galactic latitude (in degrees) 48- 51 F4.2 mag Vmag Visual magnitude (V) 54- 61 A8 --- SpType Spectral and luminosity classes following the best match of in resultant extinction curves 64- 78 A15 --- SpTypeL Spectral and luminosity classes taken from the literature 81- 85 F5.2 mag B-V Observed color index B-V 88- 92 F5.3 mag E(B-V) Colour excess E(B-V) following our best match 95- 97 A3 --- Ref Codes for the source of spectroscopic and photometric data (1)
Note (1): references are numbered as follows: 1 = Hoffleit D., Jaschek C. (1982) "The Bright Star Catalogue", Yale University Observatory, New Haven (Cat. V/50) 2 = Blanco V.M., Demers S., Douglass G.G., FitzGerald M.P. (1970) Publications U.S. Naval Observatory, Second Series, Vol. 21 (Cat. II/4) 3 = Kennedy P.M., Buscombe W. (1974) "MK Spectral Classifications", Evanston 1974. 4 = Buscombe W. (1977) "MK Spectral Classifications", Evanston 1977. 5 = Mermilliod J.C., (1974) "Catalogue of UBV photoelectric photometry".
Byte-by-byte Description of file: extinct.dat
Bytes Format Units Label Explanations
2- 7 I6 --- HD HD number, as in file "stars.dat" 12- 17 F6.3 um-1 1/lambda Reciprocal wavelength in µm-1 19- 23 F5.2 --- Ext Extinction ratio E(λ-274nm)/E(B-V) 25- 28 F4.2 --- e_Ext Extinction error
History: * 02-Jul-1992: First version of the catalog (received from the author on a floppy disk in February 1992) * 14-Mar-2005: documentation standardized.
(End) Francois Ochsenbein [CDS] 14-Mar-2005
|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|