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J/PASP/106/1120        Delta Scuti variables. II. DY Her    (Milone+, 1994)

Studies of large amplitude delta Scuti variables II: DY Herculis Milone E.F., Wilson W.J.F., Fry D.J.I., Schiller S.J. <Publ. Astron. Soc. Pac. 106, 1120 (1994)> =1994PASP..106.1120M (SIMBAD/NED Reference)
ADC_Keywords: Stars, variable ; Photometry, UBVRIJKLMNH Abstract: This is the second paper in a series on large-amplitude delta Scuti stars intended to determine Baade-Wesselink radii and luminosities with precision. The first paper (Wilson et al., 1993PASP..105..809W) discussed our method of analysis and its application to EH Librae; in this we discuss the observations and analysis of DY Herculis. Optical and infrared photometry and cross-correlated radial-velocity data have been obtained and analyzed. Fourier representations for the UBVRIJHK light curves and for the radial-velocity curves were used to derive a value for the minimum radius for each of 60 combinations of flux and color index. From these we adopt a mean value for the minimum radius of Rmin=2.77±0.20R. When combined with effective temperatures from Breger et al. (1978PASP...90..754B), we find a mean bolometric luminosity of <LB≥21.70L and a mean absolute magnitude of <MB≥1.41. The radial excursion is 0.149R. We use the same procedure to improve our results for EH Librae, deriving Rmin for each of 42 combinations of flux and color index, and obtain mean values of Rmin=2.62±0.19R, <LB≥24.56L and <MB≥1.27. Addresses: Milone E.F. Wilson W.J.F. Fry D.J.I. Rothney Astrophysical Observatory, Department of Physics and Astronomy, University of Calgary, 2500 University Drive, NW, Calgary AB T2N 1N4, Canada Schiller S.J. Physics Department, South Dakota State University, Box 2219, Brookings, South Dakota 57007-0395 Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 16 31 17 +12 00.4 DY Her ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1 44 394 Optical photometry of DY Her (RAO Data) table2 61 140 Optical photometry of DY Her (McDonald Data) table3 50 51 Infrared observations of DY Her
Byte-by-byte Description of file: table1
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julian Date 15- 20 F6.4 --- Phase [0/1[ Phase 23- 28 F6.4 mag DVmag []? Differential V magnitude 29 A1 --- n_DVmag [*] "*" denotes rejected data point (1) 31- 36 F6.4 mag DBmag []? Differential B magnitude 37 A1 --- n_DBmag [*] "*" denotes rejected data point (1) 39- 44 F6.4 mag DImag []? Differential I magnitude
Note (1): An asterisk, '*', denotes a rejected data point, one not used in the computation of the light curve or the derivation of the Wesselink radius.
Byte-by-byte Description of file: table2
Bytes Format Units Label Explanations
1- 12 F12.4 d HJD Heliocentric Julian Date 15- 20 F6.4 --- Phase [0/1[ Phase 23- 28 F6.4 mag DUmag Differential U magnitude 29 A1 --- n_DUmag [*] "*" denotes rejected data point (1) 31- 36 F6.4 mag DBmag Differential B magnitude 37 A1 --- n_DBmag [*] "*" denotes rejected data point (1) 39- 44 F6.4 mag DVmag Differential V magnitude 45 A1 --- n_DVmag [*] "*" denotes rejected data point (1) 47- 52 F6.4 mag DRmag Differential R magnitude 53 A1 --- n_DRmag [*] "*" denotes rejected data point (1) 55- 60 F6.4 mag DImag Differential I magnitude 61 A1 --- n_DImag [*] "*" denotes rejected data point (1)
Note (1): An asterisk, '*', denotes a rejected data point, one not used in the computation of the light curve or the derivation of the Wesselink radius.
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 13 F13.5 d HJD Heliocentric Julian Date 16- 22 F7.5 --- Phase [0/1[ Phase 25- 31 F7.5 mag DJmag []? Differential J magnitude 32 A1 --- n_DJmag [*] "*" denotes rejected data point (1) 34- 40 F7.5 mag DHmag []? Differential H magnitude 41 A1 --- n_DHmag [*] "*" denotes rejected data point (1) 43- 49 F7.5 mag DKmag []? Differential K magnitude 50 A1 --- n_DKmag [*] "*" denotes rejected data point (1)
Note (1): An asterisk, '*', denotes a rejected data point, one not used in the computation of the light curve or the derivation of the Wesselink radius.
Origin: AAS CD-ROM series, Volume 3, 1995
(End) Lee Brotzman [ADS] 16-Nov-1994, Patricia Bauer [CDS] 16-Feb-1995
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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