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[vsnet-id 127] (fwd) Hassforther's new variable stars
- Date: Sun, 26 Sep 1999 12:59:24 +0900 (JST)
- To: vsnet-id, vsnet-obs
- From: Taichi Kato <tkato>
- Subject: [vsnet-id 127] (fwd) Hassforther's new variable stars
- Cc: Bela1996@aol.com
- Sender: owner-vsnet-id@kusastro.kyoto-u.ac.jp
(fwd) Hassforther's new variable stars
From: Bela1996@aol.com
Date: Sat, 25 Sep 1999 19:53:19 EDT
Subject: new variable stars
Hello,
I've found some new variable Stars in the Stardial-Field 1900.
Here are the first ten stars with positions, identifications and some
comments. I checked a couple of catalogs (GCVS, NSV, MISAO, TASS and
some other) and made recherches in SIMBAD - nothing was found, so I'm
sure, that these stars are new. I checked the variability of my=20
findings with the TASS-Database
http://vsnet.tass-survey.org/tass/www_scripts/make_chart.html
and could verify all but one star (declination too much in the south for=20
TASS).
Lightcurves are published on my homepage=20
http://members.aol.com/bela1998/stard2.htm=20
One star (No 04) is already published in the IBVS (No 4742), for
another star (No 22) I published a lightcurve in the magazin of the
German Working Group on Variable Stars (BAV) No 3 / 1999, p. 144.
The Stardial-images (http://vsnet.astro.uiuc.edu/stardial/) are immediately
available on the web. Three years of sky-patrol provide a rich
hunting-ground for the variable-star-observer. The new variables were
found by blinking only four images! By verifying the findings in
animation-mode (with 30 images) I found some more new stars.
For the light-curves all good images were used (ca 190).
Some stars (Nos 05, 10, 11) are too faint, therefore I took=20
the TASS-measurements for a first evaluation.
The Stardial-project is one of the most fascinating aspects of the WEB,
many thanks to Peter McCullough!!
The TASS-Database was a very valuable source to check and verify my
findings. Many thanks to the TASS-people!!
This reaearch made use of the SIMBAD data base, operated by the
CDS at Strasbourg, France.
Bela Hassforther, Ringstr. 27, D-69115 Heidelberg, Germany
email: bela1996@aol.com
----------------------------------------------------------------
Positions and Identifications
No (2000) GSC IRAS USNO-A2.0 TASS_ID
04 19 06 05.7 -01 29.98 - 19035-0134 0825-14421517 12051011
05 19 08 53.1 -02 01.31 =E2=80=93 19062-0206 =E2=80=93
=
11949916
08 19 01 58.6 -02 00.78 5132 390 18593-0205 0825-14114980 1717020
10 19 05 04.5 -03 00.80 5132 1421 =E2=80=93 0825-14347108 11=
949324
11 19 02 22.3 -03 13.34 5132 1707 =E2=80=93 0825-14145606 17=
19810
12 18 58 57.3 -03 04.98 5119 1004 18563-0309 =E2=80=93 11=
948281
15 19 08 47.6 -04 02.76 =E2=80=93 19061-0407 0825-14616754 17=
66554
20 19 02 04.1 -07 42.99 5707 2085 18593-0747 =E2=80=93 =
=E2=80=93
22 19 14 17.7 -03 04.91 5133 1747 19116-0310 0825-14981814 1803550
27 19 01 40.5 -02 11.96 5132 1121 18590-0216 0825-14092135 1714878
Comments:
No Type Magnitudes (TASS) Comments
04 M V=3D13.43 I=3D10.87 see IBVS 4742; P ca 250d
05 M I=3D10.97 - < 12.0 P ca 320d, Max before 2450620, around 2450=
920,
well before 2451310, very faint, very red
08 SR V=3D12.52, I=3D 8.42 amplitude ca 0.7, very red
10 EB/EW V=3D11.09, I=3D10.68 in Tycho-Cat., Period not sure (aliasses=
!)
11 EB/EW V=3D11,26, I=3D10,76 Period not sure (aliasses!)
12 SR V=3D11.92, I=3D8.28 rather small amplitude
15 M V=3D14.09, I=3D8.70 P ca 400d, extremly red (V-I =3D 5,4) (!=
!)
20 M/SRA P ca 190 or 380 d (large seasonal gaps)
not in USNO; SERC-V: ca 13,1mag
22 SR V=3D12.62, I=3D8.57 P =3D 75 and 700 d, very red
27 SR V=3D13.63, I=3D8.68 P ca 100 d, extremly red (V-I =3D 5)
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