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havaintotornit-l@ursa.fi
viestiarkisto
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Huomenta,
Uusi kohde kataklysmisistä kiinnostuneille havaittavaksi Härässä.
Pertti
- Forwarded Message ----------
Subject: [Aavso-photometry] New Object In Tau..... appears to be a UGSU-type
CV
Date: Friday 27 October 2006 04:39
From: "David Boyd" <drsboyd_at_dsl.pipex.com>
To: aavso-photometry_at_mira.aavso.org, "BAAVSS alert"
<baavss-alert_at_yahoogroups.com>, "CVnet outburst"
<cvnet-outburst_at_yahoogroups.com>, "cba-news" <cba-news_at_cba.phys.columbia.edu>
4 hrs of V and I-band CCD photometry of this new object, reported earlier by
astronomers at Crni Vrh Observatory of the University of Ljubljana, shows a
strong superhump signal with peak-to-peak amplitude 0.2 mag around a mean V
mag of 15.10 indicating it is probably a UGSU-type CV. The V-I colour index
is very close to zero.
The mean superhump period over this 4 hr interval is 0.0541 +/- 0.0027d,
using Peranso.
These measurements used USNO-B1 1028-0043851 as a comparison, thanks to
Wolfgang Renz for circulating this information. Equipment was 0.35m SCT with
SXV-H9 CCD.
Position measured as RA 03 29 12.26 +/- 0.19 Dec +12 50 17.54 +/- 0.12
(2000) using Astrometrica and UCAC2.
Further time-series observations are encouraged.
Regards,
David Boyd (BDG),
West Challow, UK
Aavso-photometry mailing list
Aavso-photometry_at_mira.aavso.org
http://www.aavso.org/mailman/listinfo/aavso-photometry
--
Pertti Pääkkönen, PhD, Chief engineer
University of Joensuu, Department of Physics and Mathematics, Finland
Tel: +358 (0)13 251 3238, +358 (0)50 505 6376
Fax: +358 (0)13 251 3290
http://physics.joensuu.fi
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