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From: "Mati Morel" <morel@ozemail.com.au> Date: Mon, 6 Jan 2003 14:12:52 +1100 Subject: [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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