does any-one have some data (type, records, magnitude range...) on the variable TU CRT (Cratoris presumably)? Does it exist at all? Not according to the SIMBAD database.
To Berto Monard and others interested in TU CRT,
Yes, TU Crt certainly does seem to exist. The folowing details are given in the Name List of Variable Stars (additions etc. to the GCVS):
RA 11 01 09 Dec. -21 21.6 Magnitude: 12.1 - 17.5 B Type: UGSU Reference: Semkov et al. IBVS No. 39176, 1993
It will probably be worth while giving more attention to this star.
Jan Hers, Sedgefield, South Africa.
Regarding Monard's question and Hers' reply, I have searched for the references of TU Crt.
TU Crt was originally discovered by an object (J05.23) showing CV-sepctrum (Maza et al. 1992, PASP 104, 1060). Wenzel (1993, IBVS 3829) inspected the Sonneberg plate collection and revealed one distinct outburst. Hazen (1993, IBVS 3888) further detected a number of outbursts from the Harvard College Observatory's collection.
List of Hazen's outbursts: JD mB 2418748 12.1 20547 12.4 21348 13.4 23503 12.5 25418 13.0 26147 12.4 super? 26531 12.5 27162 13.7 27890 12.5 28304 12.3 super? 29017 12.8 30159-163 12.2 likely super 31655 12.1 32287 12.2 44748 12.5 46195 13.2 47327 13.2
V-band CCD charts are available from the VSNET ftp/WWW, placed in the chart section (linked from the entry page of this WWW).
G'day Berto (and other readers),
On 1996-12-06 email@example.com said to all... >does any-one have some data (type, records, magnitude range...) >on the variable TU CRT (Cratoris presumably)? >Does it exist at all? Not according to the SIMBAD database.
TU Crt is plotted on VSS RASNZ Charts 1130 & 1131 (Series 24) issued in 1995. Data quoted from the charts & VSS circulars:
position : 11h03m36s -21d37'45" (2000) type : UGSU range : 12.1 - 17.5B
It used to be called "JO.05.23 Crateris"; suggesting it's another of Albert Jones' discoveries.
BTW thanks for confirming that SIMBAD isn't completely up-to-date!
Variable Stars Group
Astronomical Society of South Australia
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