J/A+AS/129/337 CCD photometry of YY Orionis stars (Harder+ 1998)
CCD Photometry of YY Orionis stars
Harder S., Bertout C., Mennessier C.
<Astron. Astrophys. Suppl. Ser. 129, 337 (1998)>
=1998A&AS..129..337H 1998A&AS..129..337H (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, UBVRI; Stars, pre-main sequence; Stars, variable
Keywords: Stars: pre-main sequence - Stars: activity - Stars: variables: other
Abstract:
Results of photometric monitoring in the UBVRI bands of 5 YY
Orionis stars and 2 other variable stars are presented. Each source
was observed in the period of 1996, Nov. 23 to Dec. 2 and of 1996,
Dec. 23 to 1997,Jan. 2 at the 1-m telescope of Wise Observatory,
Israel. Tables.dat contain the luminosity variation of each star as
deviation from its average observed magnitude.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 30 494 Magnitude variation
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Table 1: List of objects
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RA (2000) DE Object Star #
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05 34 48 -05 57 59 YY Orionis 1
05 35 09 -04 27 36 SY Orionis 2
05 35 26 -06 01 24 NS Orionis 3
05 35 48 -05 01 42 CE Orionis 4
05 34 37 -06 05 36 XX Orions 5
05 35 08 -04 27 48 V481 Ori 6
05 35 44 -05 05 42 AO Orionis 7
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Table 2: Measurement error
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Star I R V B U
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YY Ori 0.09 0.06 0.12 0.18 0.69
SY Ori 0.02 0.02 0.03 0.02 0.08
NS Ori 0.06 0.03 0.05 0.09 0.08
CE Ori 0.05 0.05 0.06 0.18
XX Ori 0.06 0.04 0.06 0.07
V481 Ori 0.02 0.02 0.03 0.02 0.11
AO Ori 0.05 0.05 0.05 0.07 0.20
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Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Star name
10- 20 F11.3 d JD Julian Date
22 A1 --- Band [UBVRI] Band
24- 29 F6.3 mag Mag Magnitude variation in Band
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Acknowledgements: Stephan Harder
(End) Patricia Bauer [CDS] 21-Apr-1998