J/A+A/556/A60 BVRI observations of the FUor star V582 Aur (Semkov+, 2013)
Photometric and spectroscopic variability of the FUor star V582 Aurigae.
Semkov E.H., Peneva S.P., Munari U., Dennefeld, M., Mito, H., Dimitrov D.P.,
Ibryamov, S., Stoyanov, K.A.
<Astron. Astrophys. 556, A60 (2013)>
=2013A&A...556A..60S 2013A&A...556A..60S
ADC_Keywords: Stars, variable ; Stars, pre-main sequence ; Photometry, UBVRI
Keywords: stars: pre-main sequence - stars: variables: T Tauri, Herbig Ae/Be -
stars: individual: V582 Aur
Abstract:
We present results from optical photometric and spectroscopic
observations of the eruptive pre-main sequence star V582 Aur.
Variability of the star was reported a few years ago when it was
suspected as a possible FU Orionis object. Due to the small number of
currently known FUors, a new object of this type is ideal target for
follow-up photometric and spectroscopic observations.
We carried out BVRI CCD photometric observations in the field of
V582 Aur from 2009 August to 2013 April. We acquired high-, medium-,
and low-resolution spectroscopy of V582 Aur during this period. To
study the pre-outburst variability of the target and construct its
historical light curve, we searched for archival observations in
photographic plate collections. The pre-outburst photographic
observations of V582 Aur show low-amplitude light variations typical
of T Tauri stars. Archival photographic observations indicate that the
increase in brightness began in late 1984 or early 1985 and the star
reached the maximum level of brightness at 1986 January. Our BVRI
photometric observations show large amplitude variations
(ΔV∼2.8mag.) during the 3.5 year period of observations. Most of
the time, however, the star remains in a state close to the maximum
brightness. The deepest drop in brightness was observed in the spring
of 2012, when the brightness of the star fell to a level close to the
pre-outburst. The multicolor photometric data show a color reversal
during the minimum in brightness, which is typical of UX Ori
variables.
Description:
The CCD photometric observations of V582 Aur were performed with the
2m RCC, the 50/70cm Schmidt, and the 60cm Cassegrain telescopes of the
National Astronomical Observatory (NAO) Rozhen (Bulgaria) and with the
1.3m RC telescope of the Skinakas Observatory of the Institute of
Astronomy, University of Crete (Greece). Observations were performed,
between 2009 October and 2013 April, with four types of the CCD camera
Vers Array 1300B at the 2m RCC telescope, ANDOR DZ436-BV at the 1.3m
RC telescope, FLI PL16803 at the 50/70cm Schmidt telescope, and FLI
PL9000 at the 60cm Cassegrain telescope. All frames were exposed
through a set of standard Johnson-Cousins filters. The measured
magnitudes from the photometric observations of V582 Aur made with the
Asiago Schmidt telescope on 2009 August are also included in table 2.
Objects:
--------------------------------------------------
RA (2000) DE Designation(s)
--------------------------------------------------
05 25 51.98 +34 52 30.0 V582 Aur = V* V582 Aur
--------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 60 130 Photometric CCD observations of V582 Aur during
the period 2009-2013
--------------------------------------------------------------------------------
See also:
B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)
B/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2013)
J/A+A/548/A97 : Catalogue of variable stars in open clusters (Zejda+, 2012)
J/other/IBVS/5969 : 80th name-list of variable stars. I. (Kazarovets+, 2011)
J/A+A/519/A83 : T Tau stars toward the Taurus-Auriga region (Takita+ 2010)
J/A+A/299/89 : COYOTES II (Bouvier+, 1995)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 10 A10 "YYYY/MM/DD" Date Observation date
12- 22 F11.3 d JD Julian date
24- 28 F5.2 mag Icmag [11.7/14.32]? Cousins I magnitude (1)
30- 34 F5.2 mag Rcmag [12.99/15.75]? Cousins R magnitude (1)
36- 40 F5.2 mag Vmag [14.06/16.85]? Johnson V magnitude (1)
42- 46 F5.2 mag Bmag [15.61/18.3]? Johnson B magnitude (1)
48- 53 A6 --- Tel Telescope used (2)
55- 60 A6 --- CCD CCD used (ANDOR, FLI or VA)
--------------------------------------------------------------------------------
Note (1): The typical errors in the reported magnitudes are:
0.01-0.02mag for I and R-band data, 0.01-0.03mag for V, and
0.02-0.04mag for B-band.
Note (2): Telescope as follows:
1.3m = 1.3m RC telescope of the Skinakas Observatory of the Institute of
Astronomy
2m = 2m RCC of the National Astronomical Observatory (NAO)
60cm = the 60cm Cassegrain of NAO
ASch = Asiago Schmidt telescope
Sch = the 50/70cm Schmidt telescope of the NAO
--------------------------------------------------------------------------------
Acknowledgements:
Evgeni Semkov, <esemkov( at )astro.bas.bg> (Bulgarian Academy of Sciences)
(End) Evgeni Semkov [BAS], Emmanuelle Perret [CDS] 15-Jul-2013