[Aavso-photometry] New variable in Her

[arne]

Tonny Vanmunster wrote:

>Dear all,
>
>IAUC 8601 (Sep 16, 2005) reports the discovery of a new variable in Her,
>close to UGC 10990 and to radio source IVS 1746+340 :
>
>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. 
>  
>
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