[vsnet-alert 1840] (fwd) XTE J2012+381 optical search of PCA error circle

[Hajime BABA <baba@kusastro.kyoto-u.ac.jp>]

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From: rmw@lowell.Lowell.Edu (R. Mark Wagner)
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Colleagues,

Here is the text of an IAUC we have submitted on J2012+381.

Cheers, Mark


 XTE J2012+381
 	R. M. Wagner, Ohio State University and S. Starrfield, Arizona
 State University, and C. Shrader, GSFC report: LONEOS Schmidt camera
 CCD images obtained on May 27.4 (IAUC 6920) and 28.3 UT by B. Skiff
 (Lowell Observatory) were examined within the improved RXTE/PCA error
 circle (IAUC 6922) compared to the DSS.  No new objects were found
 in the LONEOS images within the X-ray error circle that are not on
 the DSS down to nearly 19th mag.  Also none of the objects within
 the error circle that are present on the LONEOS images appears to
 have exhibited significant variability with respect to the DSS.
 In addition, comparison of the LONEOS images within the X-ray error
 circle does not reveal any new objects on May 28.3 as compared to May
 27.4 to a limiting magnitude of about 19.  Also, no objects within the
 error circle and present on these images exhibit variability exceeding
 0.1 magnitude (3-sigma) down to 18th magnitude between the two epochs.
 Continued monitoring of the error circle is encouraged.

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