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J/A+A/275/201    Stroemgren photometry of Dwarf Novae    (Echevarria+ 1993)

Stroemgren photometry of dwarf novae Echevarria J., Costero R., Michel R. <Astron. Astrophys. 275, 201 (1993)> =1993A&A...275..201E
ADC_Keywords: Binaries, cataclysmic ; Novae ; Photometry, uvby, beta Keywords: Stars: cataclysmic variables - Dwarf novae - Photometry Description: A sample of 26 dwarf novae was observed in the Stroemgren photometric system. The observations were performed on 3 different seasons in 1986 January, February and July, with a 6-channel photometer attached to the 1.5m telescope if the Observatorio Astronomicao Nacional at San Pedro Martir, Baja California, Mexico. A number of standard stars were observed, and a nearby comparison star was observed for each object. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 69 37 The dwarf novae table2.dat 77 25 The comparison stars
See also: J/A+AS/70/481 : Catalogue of Northern dwarf novae (Bruch+ 1987) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
4- 9 A6 --- Object Variable name 14- 18 F5.2 mag ymag y magnitude 22- 26 F5.2 mag b-y b-y color 30- 34 F5.2 mag m1 m1 color index 38- 42 F5.2 mag c1 c1 color index 46- 49 F4.2 mag beta ? beta color 53- 59 A7 "DDMMMYY" Date Observation date 64- 65 A2 --- Type Dwarf novae type 69 A1 --- State [mMRDS] The entries refer to: minimum (m), rise (R), maximum (M), decline (D) and standstill (S)
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
2- 9 A8 --- Object "C" followed by variable name which was studied 12- 16 F5.1 mm xpos x position in referenced charts 19- 23 F5.1 mm ypos y position in referenced charts 27 I1 --- Ref [1,2] Reference to charts : (1) Vogt & Bateson, 1982A&AS...48..383V (2) Bruch et al., 1987A&AS...70..481B 28 A1 --- Note (a) TZ Per is wrongly identified in the chart. The correct position is at 3.5, 0.5 from the center of the chart 30- 34 F5.2 mag ymag y magnitude 37- 40 F4.2 mag b-y b-y color 42- 46 F5.2 mag m1 m1 color index in Stroemgren system 49- 52 F4.2 mag c1 c1 color index in Stroemgren system 55- 58 F4.2 mag beta beta color 61- 77 A17 --- Sp Spectral type derived from photometry

(End) Patricia Bauer [CDS] 16-Sep-1993
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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