J/A+A/349/619 UBVRI light curves of AA Tau in 1995 (Bouvier+, 1999)
Magnetospheric accretion onto the T Tauri star AA Tauri.
I. Constraints from multisite spectrophotometric monitoring.
Bouvier J., Chelli A., Allain S., Carrasco L., Costero R.,
Cruz-gonzalez I., Dougados C., Fernandez M., Martin E.L., Menard F.,
Mennessier C., Mujica R., Recillas E., Salas L., Schmidt G., Wichmann R.
<Astron. Astrophys., 349, 619-635 (1999)>
=1999A&A...349..619B 1999A&A...349..619B
ADC_Keywords: Stars, pre-main sequence ; Photometry, UBVRI
Keywords: accretion, accretion disks - stars: circumstellar matter -
stars: magnetic fields - stars: pre-main sequence -
stars: pulsars: general - stars: individual: AA Tau
Abstract:
We have monitored the photometric, spectroscopic and polarimetric
variations of the classical T Tauri star (CTTS) AA Tau over a period
of a month. The light curve consists of more than 260 measurements in
each of the B and V-bands over a continuous time period of 30 days and
more than 180 measurements in the R and I-bands. This provides
unprecedented detail of the photometric variations of a CTTS on
timescales ranging from hours to weeks.
Description:
All photometric observations were obtained with CCD devices using
UBVRI filters or a subset thereof. The Journal of Observations is
given in Table 1.
Near-IR measurements (Table 2) were obtained on AA Tau in the JHK
filters over 6 nights encompassing part of the first fading episode
and the return of the system to the bright state.
Objects:
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RA (2000) DE Designation(s) Bmag Vmag SpType
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04 34 55.5 +24 28 54 AA Tau 13.96 12.82 M0V:e
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ubvri.dat 24 940 UBVRI light curves of AA Tau
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See also:
J/A+A/409/169 : UBVRI light curves of AA Tau in 1999 (Bouvier+, 2003)
Table 1: Journal of Observations
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Dates Site Telescope Filters
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8-15/11/95 Tiede Canarias 0.82m BV
9-16/11/95 San Pedro Martir 1.52m UBVRI
13-20/11/95 San Pedro Martir 2.1m JHK
15-28/11/95 Cananea 2.1m BVRI
17-30/11/95 Obs. Haute Provence 1.2m (U)BVRI
22-29/11/95 San Pedro Martir 1.52m BVRI
20-29/11/95 ESO La Silla 0.1m Ducth BV
1-10/12/95 San Pedro Martir 1.52m BV
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Table 2: JHK photometry
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JD Jmag J-H H-K
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2450037.309 9.70 0.84 0.50
2450037.376 9.65 0.82 0.48
2450038.308 9.94
2450038.378 9.99 0.85 0.59
2450039.328 9.69 0.85 0.51
2450039.395 9.68 0.87 0.46
2450040.340 9.81 0.85 0.55
2450040.523 9.88 0.92 0.44
2450041.353 9.38 0.81 0.43
2450043.381 9.30 0.70 0.49
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Byte-by-byte Description of file: ubvri.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d JD Julian date
14- 19 F6.3 mag Mag Magnitude
24 A1 --- Filter [UBVRI] Filter
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Acknowledgements: Jerome bouvier Jerome.Bouvier(at)obs.ujf-grenoble.fr
References:
Bouvier et al., Paper II 2003A&A...409..169B 2003A&A...409..169B, Cat. J/A+A/409/169
(End) Patricia Bauer [CDS] 15-Jan-2004