[vsnet-alert 14166] RV: Re: Outburst of a possible new cataclysmic variable 1RXS J063214.8+253620
Diego Rodriguez
drodrig at jet.es
Sun Jan 29 08:28:04 JST 2012
OBJECT DATE MAG OBS
----------- ------------ --------- -------- ------------
1RXS J063214.8+253620 20120128.917 12.48CR Diego Rodriguez
Astrometry of this object. CMC-14
1RXS J063214.8+253620 06 32 13.11 +25 36 22.2
There is a CMC-14 star at this position:
_RAJ2000 _DEJ2000 r'mag Jmag Hmag
Ksmag
06 32 13.100 +25 36 22.86 15.309 13.600 13.183 13.014
OBS Diego Rodriguez
TEL 0.25-m f/6.3 Schmidt-Cassegrain + CCD
CAT: CMC-14
Carlsberg Meridian Catalog 14
Best regards,
Diego Rodriguez
******************************************************
[vsnet-alert 14161] Re: Outburst of a possible new cataclysmic variable
1RXS J063214.8+253620
Dear Korotkiy Stas,
> Here is our astrometry of this object.
> R.A. 06h32m13s.09, Decl. +25o36'22".2 (J2000.0)
Note that the astrometry above is based on all of our images from 2011 Jan.
10 to 2012 Jan. 26.
The astrometry based on only the outburst images on 2012 Jan. 26 is:
R.A. 06h32m13s.12, Decl. +25o36'21".8 (J2000.0)
There is a USNO-A2.0 star at this position:
USNO-A2.0 1125.04125863 06h32m13s.235 +25o36'23".97 Mag(R):14.5
Mag(B):15.4
However, we cannot say whether this USNO-A2.0 15-mag star became bright, or
a new bright star appeared very near by this position, based on our
astrometry.
Best regards,
> Dear Korotkiy Stas,
>
> Here is our astrometry of this object.
>
> R.A. 06h32m13s.09, Decl. +25o36'22".2 (J2000.0)
>
> Best regards,
>
> > Dear Korotkiy Stas,
> >
> > Congratulations for your discovery of this outburst. Here I report
> > the MISAO Project observations by Youichirou Nakashima. We confirmed
> > the outrburst on our Jan. 26 survey images.
> >
> > 1RXS_J063214.8+253620 20120126.62110 124C Mis 1RXS_J063214.8+253620
> > 20120126.61976 124C Mis 1RXS_J063214.8+253620 20120126.61841 124C
> > Mis 1RXS_J063214.8+253620 20120126.61707 125C Mis
> > 1RXS_J063214.8+253620 20111225.77596 148C Mis 1RXS_J063214.8+253620
> > 20111225.77463 149C Mis 1RXS_J063214.8+253620 20111225.77329 148C
> > Mis 1RXS_J063214.8+253620 20111217.80168 153C Mis
> > 1RXS_J063214.8+253620 20111217.80034 151C Mis 1RXS_J063214.8+253620
> > 20111217.79899 154C Mis 1RXS_J063214.8+253620 20111123.69036 149C
> > Mis 1RXS_J063214.8+253620 20111123.68903 149C Mis
> > 1RXS_J063214.8+253620 20111123.68769 148C Mis 1RXS_J063214.8+253620
> > 20110222.53337 149C Mis 1RXS_J063214.8+253620 20110222.53203 149C
> > Mis 1RXS_J063214.8+253620 20110222.53068 151C Mis
> > 1RXS_J063214.8+253620 20110203.61891 150C Mis 1RXS_J063214.8+253620
> > 20110203.61755 150C Mis 1RXS_J063214.8+253620 20110203.61617 151C
> > Mis 1RXS_J063214.8+253620 20110203.61480 151C Mis
> > 1RXS_J063214.8+253620 20110126.59088 150C Mis 1RXS_J063214.8+253620
> > 20110110.64743 152C Mis 1RXS_J063214.8+253620 20110110.64606 153C
> > Mis 1RXS_J063214.8+253620 20110110.64470 152C Mis
> >
> > Best regards,
> >
> > > A bright (unfiltered magnitude 12.65) optical transient source was
detected on 2012 January 27 at position 06:32:13.06 +25:36:22.5 (+/-0.3",
J2000). Inspection of previous images of this field revealed that the object
is also present on images from January 24, 25, and 26 but is below the
detection limit (typically around 13.5m) on January 20 and 21.
> > >
> > >
> > > Date JD mag.
> > > 2012-01-20.740 2455947.240 >13.5
> > > 2012-01-21.701 2455948.207 >13.5
> > > 2012-01-24.759 2455951.259 13.10 +/-0.05
> > > 2012-01-25.845 2455952.346 12.81 +/-0.03
> > > 2012-01-26.833 2455953.333 12.66 +/-0.03
> > > 2012-01-27.897 2455954.397 12.61 +/-0.03 The observations were
> > > obtained with a wide-field survey camera (F=135mm f/2.0 telephoto lens
equipped with ST8300M CCD) operated by Ka-Dar Observatory at the Mountain
station of Kazan State University (Karachay-Cherkessia, Russia). The
instrumental magnitude scale is calibrated using V magnitudes of Tycho-2
(Hog et al., 2000, A&A, 355L, 27) stars in the field of view.
> > >
> > > The optical transient is associated with an ultraviolet object GALEX
J063213.0+253623 (FUV=18.42 +/-0.05, NUV=17.90 +/-0.03) located 0.7" from
the measured optical position (see http://galex.stsci.edu/GR6/ ). The
transient is 24" away from an unidentified X-ray source 1RXS
J063214.8+253620 listed in the ROSAT All Sky Survey Faint Source Catalog
(Voges et al., 2000, IAUC, 7432) and is likely associated with it. The All
Sky Automated Survey (ASAS-3, Pojmanski 2001, ASPC, 246, 53;
http://www.astrouw.edu.pl/asas/ ) database lists two detections of a source
at the above position:
> > >
> > >
> > > Date HJD V
> > > 2009-03-17 2454907.54944 12.82 +/-0.06
> > > 2009-03-21 2454911.53385 12.95 +/-0.06 which may be the previous
> > > outburst of this object. We conclude that the observed optical
transient source is likely a previously unknown cataclysmic variable in
outburst.
> > >
> > > Follow-up photometric and astrometric observations are requested.
> > >
> > > The discovery images may be found here:
> > > http://scan.sai.msu.ru/~kirx/ATel/1RXSJ063214/
> > >
> > > http://www.astronomerstelegram.org/?read=3893
> >
> > --
> > Seiichi Yoshida
> > comet at aerith.net
> > http://www.aerith.net/
>
> --
> Seiichi Yoshida
> comet at aerith.net
> http://www.aerith.net/
>
--
Seiichi Yoshida
comet at aerith.net
http://www.aerith.net/
More information about the vsnet-alert
mailing list