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Swift UVOT Observations of the X-ray transient in NGC 2770

ATEL # 1356; A.K.H. Kong (NTHU), A. Soderberg, E. Berger (Princeton), N. Rea (Amsterdam), T. Maccarone (Southampton)
on 11 Jan 2008; 12:59 UT
Distributed as an Instant Email Notice (Transients)
Password Certification: Albert Kong (akong@cfa.harvard.edu)

Subjects: Optical, X-ray, Transients

Swift performed an observation of the X-ray transient in NGC 2770 on 2008 Jan 11 02:45UT. No X-ray source was detected in the 1.1ks observation. However, the optical transient (e.g., GCN #7163) was clearly detected in the U, V, and B bands of the UVOT. The source was marginally seen in the UVW1 image. The very rough B and V magnitude is 18.8 and 18.4, respectively. The Swift observations indicate that the optical transient becomes brighter in the past 24 hours. We note that the optical transient was not seen in the UVOT observations taken on 2008 Jan 9 (ATel #1353, #1355).


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