[vsnet-chat 781] (Repost) original VSNET articles on TU Crt

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

(Repost) original VSNET articles on TU Crt

Date: Mon, 9 Dec 1996 20:00:42 +0900
From: Taichi Kato <tkato>
Subject: [vsnet 907] on TU Crt

   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).

Regards,
Taichi Kato

PS. Does anyone know further published results of the spectroscopic survey
    by Maza et al.?

From: bas@lowell.edu (Brian Skiff)
Date: Mon, 9 Dec 96 20:47:56 MST
Subject: [vsnet 910] TU Crt = J05.23

     I checked into the problem of the missing object from SIMBAD.  It turns
out that it is indeed in the database, but only under the provisional
moniker "NAME J 05.23", and lacks the ID with the variable-star designation.
I have sent a note to the appropriate person in Strasbourg, and I suspect
the omission will be corrected within 24 hours.
     The "J" designation does not derive from Albert Jones, but instead a
scheme of field names given by the Maza et al. team based on their
objective-prism survey plates.  Albert has lots to do with variable stars,
but this name isn't one of them!

\Brian Skiff  (bas@lowell.edu)

Date: Tue, 10 Dec 1996 19:35:51 -0400
From: Claus Tappert <ctappert@astro.puc.cl>
Subject: [vsnet 912] TU Crt and the Calan-Tololo Survey

Dear Colleagues,

regarding TU Crt, there is also a paper by Koen & O'Donoghue
(1995, ApJS 101, 347, not in SIMBAD, btw.) who derived a 
probable period of 0.0844 days for the system, making it a
possible SU UMa member (as already suggested by Hazen as cited 
by Kato in vsnet 907).

Other CV candidates from the Calan-Tololo Survey are currently
examined by us (Thomas Augusteijn (ESO), Jose Maza (Universidad
de Chile), and me). We will send first results on identified 
objects to the list as soon as we conclude our first series
of observations and can think about submitting a paper. However, 
every system found in outburst will be reported at once to enable 
follow-up observations and search for superhumps (we expect to find
mainly low-mass-transfer systems placed below the period gap and thus 
probable SU UMa members). TU Crt has been the only published CV
from this survey up to now.
 
Regards,
Claus Tappert
-- 
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Claus Tappert                             email: ctappert@astro.puc.cl 
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Casilla 104                                 fax: ++56-2-552-5916  or
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