J/A+A/582/A113 V1184 Tauri UBVRI light curves (Semkov+, 2015)
The pre-main-sequence star V1184 Tauri (CB 34V) at the end of prolonged eclipse.
Semkov E.H., Peneva S.P., Ibryamov S.I.
<Astron. Astrophys. 582, A113 (2015)>
=2015A&A...582A.113S 2015A&A...582A.113S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, variable ; Stars, pre-main sequence ; Photometry, UBVRI
Keywords: stars: pre-main sequence - star: variable: T Tauri, Herbig Ae/Be -
stars: individual: V1184 Tauri
Abstract:
V1184 Tau (CB 34V) lies in the field of the Bok globule CB 34 and was
discovered as a large amplitude variable in 1993. According to the
first hypothesis of the variability of the star, it is a FU Orionis
candidate erupted between 1951 and 1993. During subsequent
observations, the star manifests large amplitude variability
interpreted as obscuration from circumstellar clouds of dust. We
included V1184 Tau (CB 34V) in our target list of highly variable
pre-main-sequence stars to determine the reasons for the variations in
the brightness of this object. Data from BVRI photometric observations
of V1184 Tau were performed in two observatories with two medium-sized
and two small telescopes. Our results indicate that during periods of
maximum light the star shows characteristics typical of T Tauri stars.
During the observed deep minimum in brightness, however, V1184 Tau is
rather similar to UX Orionis objects. The deep drop in brightness
magnitude diagrams is also confirmation of obscuration from
circumstellar clouds of dust as a reason for the large amplitude
variability in the brightness.
Description:
UBVRI photometric data of V1184 Tauri during the period from 2000
October to 2015 April are presented. The CCD observations were
performed in two observatories, with four telescopes. These are the
2-m Ritchey-Chretien- Coude (RCC), the 50/70-cm Schmidt and the 60-cm
Cassegrain telescopes of the Rozhen National Astronomical Observatory
of the Bulgarian Academy of Sciences (Bulgaria) and the 1.3-m
Ritchey-Chretien (RC) telescope of the Skinakas Observatory of the
University of Crete (Greece).
The observations were performed with eight different types of CCD
cameras - Photometrics AT200 and VersArray 1300B at the 2-m RCC
telescope; Photometrics CH360 and ANDOR DZ436-BV at the 1.3-m RC
telescope; SBIG ST-8, SBIG STL-11000M and FLI PL16803 at the 50/70-cm
Schmidt telescope; and FLI PL09000 at the 60-cm Cassegrain telescope.
All frames were taken through a standard Johnson-Cousins set of
filters. The photometric data were reduced by IDL package (standard
subroutine DAOPHOT). To minimize the light from the surrounding nebula
all data were analysed using the same aperture, which was chosen as 4
arcsec radius. The background is taken from 15 arcsec to 20 arcsec. As
a reference the BVRI comparison sequence reported in Semkov
(2003A&A...404..655S 2003A&A...404..655S, 2006AN....327..328S 2006AN....327..328S) was used.
The UBVRI photometric data, obtained in the period from October 2000
to 2002 April are presented in Semkov (2003A&A...404..655S 2003A&A...404..655S). The data,
collected in the period from 2002 August to 2004 March are presented
in Semkov (2004, A&A, 419, L59-L62). And the CCD BVRI photometric
data, acquired in the period from 2005 November to 2007 November are
presented in Semkov et al. (2008A&A...483..537S 2008A&A...483..537S).
Objects:
-----------------------------------------------
RA (2000) DE Designation(s)
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05 47 03.77 +21 00 34.8 V1184 Tau = CB 34V
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 63 286 Photometric CCD observations of V1184 Tau during
the period October 2000-April 2015
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Byte-by-byte Description of file: table.dat
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Bytes Format Units Label Explanations
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1- 10 A10 "date" Date Date of observation ("DD.MM.YYYY" format)
12- 20 F9.3 d JD Julian Date (JD-2400000)
22- 26 F5.2 mag Imag ?=- I magnitude
28- 32 F5.2 mag Rmag ?=- R magnitude
34- 38 F5.2 mag Vmag ?=- V magnitude
40- 44 F5.2 mag Bmag ?=- B magnitude
46- 50 F5.2 mag Umag ?=- U magnitude
52- 56 A5 --- Tel Telescope used (1)
58- 63 A6 --- CCD CCD used (2)
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Note (1): Telescopes as follows:
2-m = 2-m Ritchey-Chretien-Coude telescope of the Rozhen National
Astronomical Observatory (Bulgaria)
1.3-m = 1.3-m Ritchey-Chretien telescope of the Skinakas Observatory of
the University of Crete (Greece)
Schmidt = 50/70-cm Schmidt telescope of the Rozhen National Astronomical
Observatory (Bulgaria)
60-cm = 60-cm cassegrain telescope of the Rozhen National Astronomical
Observatory (Bulgaria)
Note (2): CCD cameras as follows:
Phot = Photometrics AT200 (2-m RCC telescope)
Photometrics CH360 (1.3-m RC telescope)
VA = VersArray 1300B
ANDOR = ANDOR DZ436-BV
ST-8 = SBIG ST-8
STL-11 = SBIG STL-11000M
FLI = FLI PL16803 (50/70-cm Shmidt telescope)
FLI PL09000 (60-cm Cassegrain telescope)
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Acknowledgements:
Sunay I. Ibryamov, sibryamov(at)astro.bas.bg,
Bulgarian Academy of Sciences; University of Shumen, Bulgaria.
(End) Patricia Vannier [CDS] 26-Oct-2015