[Aavso-photometry] Known object in Her...
Tim Puckett
tpuckett at mindspring.com
Tue Sep 20 14:32:10 EDT 2005
Hi Arne and all,
We did check all we could find about the object.
We image 2000 + fields a night and we come across these every night.
I have no one to help with cross ID's. Hopefully the VSX will
help with this. Too bad all this data goes to waste. I have tried many
times to find interested parties to crunch the data, 8 years of data,
Still no takers.
It's not Dan's responsibly to check my work, it's my responsibility.
Regards
Tim
>This is the variable called "Her" in the Downes catalog. No
>subclassification
>is known, but it is not new. I've told Dan Green that he needs to start
>using more catalogs for checking! The upcoming AAVSO VSX program will
>handle most of these cross-ids.
>Arne
>
>VARIABLE IN HERCULES
> Further to IAUC 8598, T. Puckett and V. Reddy report the
>discovery of a variable object (mag 16.2) on an unfiltered CCD
>frame taken with the 0.60-m automated supernova patrol telescope on
>Sept. 6.08 UT, the variable being located at R.A. = 17h48m05s.81,
>Decl. = +34o04'01".2 (equinox 2000.0), which is near UGC 10990, and
>it was also visible at mag 16.6 on Puckett's images from Sept. 7.09.
>The object is visible on Palomar Sky Survey plates taken on 1992
>May 5 (blue mag 19.7) and 1993 Aug. 12 (red mag 17.7). Nothing is
>visible at this location on images taken by Puckett on 2000 Apr. 18,
>26, May 12, June 9, 30, 2002 Mar. 8, Apr. 6, 16, 2003 Apr. 6, 14,
>and 2005 Feb. 26 (limiting mag about 20.0); however, the variable
>was visible at the following magnitudes on other images taken by
>Puckett: 2002 Feb. 25, 18.1; 26, 18.3; Mar. 24, 18.7; Apr. 1, 17.8;
>2004 July 10, 18.2; 2005 Apr. 5, 18.0; 13, 17.8; 17, 17.4; 20, 17.1;
>25, 17.5; May 8, 17.0; 14, 16.8; 19, 17.1; 26, 17.5; 29, 18.0; June
>6, 17.5; 23, 17.7. The variable object's location is very near
>that of the radio source IVS 1746+340 (cf. Beasley et al. 2002,
>Ap.J. Suppl. 141, 31).
>
>Since nothing is known about the type of variability, this might be an
>interesting target for both time-resolved photometry and long-term
>monitoring by CCD observers.
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