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[vsnet-sequence 217] Sequence for ASAS 000155-6707.7 = 1RXSJ000154.2-670749 = EC 23593-6724
----- Original Message -----
From: "Patrick Wils" <patrickwils@yahoo.com>
To: <vsnet-id@ooruri.kusastro.kyoto-u.ac.jp>
Sent: Wednesday, December 18, 2002 6:23 PM
Subject: [vsnet-id 720] ASAS 000155-6707.7 = 1RXSJ000154.2-670749 = EC
23593-6724
> I haven't been following the cataclysmic variable lists very
> thoroughly, so I am not sure whether the following is already commonly
> known.
>
> The variable ASAS 000155-6707.7 in the third list of ASAS variables
> (http://archive.princeton.edu/~asas/) may be identified with the
> novalike variable 1RXSJ000154.2-670749 = EC 23593-6724 from the list of
> Downes et.al. It is classified as MISC with a period of 228 days in
> the ASAS catalogue. Two outbursts to about mag 12.4 were observed near
> JD 2451890 and 2452120, so it is probably a new dwarf nova.
>
> Patrick
>
This variable is included in the Downes & Shara _Living Edition_ of their
Catalog and Atlas of CVs under the name
1RXS J0001-6707, with max. mag of 13.4. The ASAS3 catalogue gives a light
curve, showing two maxima which have the characteristic rapid rise and fall
of a UG star, but the amplitude is a bit small, only 2.5 mag. Is it a UG or
Novalike var.?
As luck would have it, there is a published sequence only 7' away which
should suffice for the time being. This is sequence J45.3 by S.Demers et al,
Astron. Astrophys. Suppl. 99,461-498 (1993). Coordinates for the sequence
stars were extracted some time ago by Brian Skiff.
Sequence Demers J45.3.
=================
Star # RA 2000 DEC 2000 V B-V GSC No.
--------------------------------------------------------------
3 00:00:46.6 -66:58:52 12.09 0.55 8846-00054
4 00:00:52.4 -66:57:18 18.00 0.66
5 00:00:55.4 -66:58:57 15.09 0.62 8846-00508
7 00:00:56.2 -66:57:39 19.24 0.81
10 00:01:01.3 -66:57:21 13.50 0.86 8846-00110
14 00:01:04.0 -66:58:55 17.06 0.70
15 00:01:04.3 -66:57:43 14.45 0.66 8846-00581
17 00:01:07.4 -66 57:56 16.74 1.03
18: 00:01:08.6 -66:59:23 19.07 0.52
20 00:01:14.9 -66:57:29 17.30 0.72
21 00:01:16.1 -66:58:10 15.57 0.75
The variable is also catalogued as GSC 8846-00365 (14.7) at
00:01:55.06 -67:07:43.5
Regards,
Mati Morel
morel@ozemail.com.au
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