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J/A+A/275/201 Stroemgren photometry of Dwarf Novae (Echevarria+ 1993)
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Stroemgren photometry of dwarf novae
Echevarria J., Costero R., Michel R.
<Astron. Astrophys. 275, 201 (1993)>
=1993A&A...275..201E
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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:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 69 37 The dwarf novae
table2.dat 77 25 The comparison stars
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See also:
J/A+AS/70/481 : Catalogue of Northern dwarf novae (Bruch+ 1987)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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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)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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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
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(End) Patricia Bauer [CDS] 16-Sep-1993