[vsnet-chat 5593] New Variables TbrV0001 - TbrV0050

[Vello Tabur <vello@pcug.org.au>]

I have been conducting a wide field CCD based survey of the southern sky
over the last few years, using a ST6 CCD and unfiltered camera lens.
Attached below are the first batch of variable stars that I've
discovered along the way. Detailed light curves, finder charts, and
X-references can be found at my web site at
          http://vsnet.tip.net.au/~vello/pub/TbrV0001.htm

What sets this survey apart from others is that the light curves have a
dense coverage. Each one consists of many points spread over 600 days. I
can say with certainty that these are variable stars and in some cases I
give the period. Using x-refs from a batch Vizie-R search, I've found
that all stars have a counterpart either in IRAS, MSX5C or 2MASS, giving
another measure of confidence.

What I don't have is highly accurate astrometry, owing to my pixel scale
of 50"/pixel. However,  Normally the scale is not a problem, as the
quoted positions are the mean of multiple images. However, when the star
is in a crowded field it can lead to problems. John Greaves of MISAO has
been helping me to identify the variable star in a these fields using
plates from Aladin. I encourage others to do some detective work as
well.

One star of note is TbrV0043. It has been steadily brightening for over
600 days and shows no sign of levelling out yet. It is a very red star
judging by the R and B mags from GSC 2.2. Assuming that it will take at
least 600 days to fade, its assumed period of >1200 days places it in
the top 25 "longest periods" listed in the GCVS.

Any comments on format, identification, etc. will be gratefully
accepted!


TbrV0001  10 32 50.7  -51 12 47  9.0 - 10.5
TbrV0002  08 19 06.8  -69 13 54  9.1 - 9.9
TbrV0003  14 06 10.0  -52 00 13  9.5 - 10.7
TbrV0004  22 23 33.3  -63 59 14  9.6 - 10.7
TbrV0005  05 49 56.7  -52 52 11  10.0 - 11.2
TbrV0006  15 34 39.4  -56 59 46  9.0 - 10.6
TbrV0007  12 38 20.1  -59 08 25  9.4 - 10.2
TbrV0008  10 41 24.2  -76 28 24  8.9 - 10.1
TbrV0009  11 52 09.9  -67 25 38  10.2 - 11.2
TbrV0010  14 59 02.4  -63 25 05  9.3 - FT 11.3
TbrV0011  08 07 30.5  -50 59 04  10.3 - 11.5
TbrV0012  06 10 47.1  -60 24 04  8.5 - 8.9
TbrV0013  08 26 40.2  -50 26 53  8.8 - 9.3
TbrV0014  14 15 29.7  -52 09 57  9.7 - 10.8
TbrV0015  07 41 07.8  -52 22 21  8.6 - 9.7
TbrV0016  13 41 10.4  -54 41 44  10.1 - FT 11.3
TbrV0017  14 49 02.9  -51 06 23  9.0 - 10.6
TbrV0018  15 31 22.3  -59 22 48  9.2 - 9.7
TbrV0019  17 12 16.3  -51 01 58  10.1 - 12.5
TbrV0020  16 44 46.8  -50 52 58  9.8 - 10.8
TbrV0021  14 30 46.2  -50 21 06  9.3 - 10.7
TbrV0022  13 47 04.3  -47 27 53  10.0 - 11.0
TbrV0023  07 13 38.3  -49 29 42  9.9 - 11.5
TbrV0024  09 53 01.7  -55 12 41  8.7 - 9.3
TbrV0025  11 07 13.8  -54 26 19  7.9 - 8.4
TbrV0026  19 43 59.4  -50 23 47  9.8 - 11.0
TbrV0027  16 01 04.6  -50 21 20  10.2 - 11.5
TbrV0028  15 34 48.6  -74 08 57  8.7 - 10.2
TbrV0029  10 09 48.6  -51 18 41  9.7 - 10.7
TbrV0030  11 53 41.4  -65 22 05  9.2 - 9.7
TbrV0031  11 49 20.2  -52 21 53  8.5 - 9.1
TbrV0032  09 55 17.0  -62 12 15  9.4 - 9.9
TbrV0033  14 41 07.0  -59 35 20  10.0 - 10.5
TbrV0034  19 58 40.7  -49 23 15  8.5 - 9.1
TbrV0035  18 59 16.3  -64 15 31  9.8 - 10.4
TbrV0036  19 08 59.7  -62 04 02  9.4 - 9.9
TbrV0037  17 36 17.2  -64 04 12  8.8 - 9.2
TbrV0038  15 30 49.6  -63 53 10  9.7 - 10.5
TbrV0039  16 19 40.8  -56 21 03  9.6 - 10.7
TbrV0040  11 19 56.7  -51 18 29  10.1 - 11.0
TbrV0041  15 25 38.4  -55 03 45  9.4 - 11.2
TbrV0042  18 45 15.1  -60 07 23  9.6 - 10.3
TbrV0043  09 18 02.0  -54 02 33  BT 8.6 - FT 10.6
TbrV0044  15 53 55.1  -58 14 10  9.7 - 10.6
TbrV0045  16 52 09.6  -69 18 05  9.4 - 10.4
TbrV0046  18 19 38.4  -72 49 51  9.8 - 10.7
TbrV0047  11 00 40.7  -55 29 10  10.2 - 11.2
TbrV0048  07 26 40.5  -51 17 46  9.1 - 10.2
TbrV0049  08 41 09.0  -50 25 04  10.5 - 11.7
TbrV0050  15 15 28.2  -59 31 36  9.2 - 9.9


--
Vello Tabur
Comet Hunting Techniques    http://vsnet.tip.net.au/~vello
R&D, SearchSoftwareAmerica  http://vsnet.searchsoftware.com

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp