GCN Circular 15862
Subject
GRB 140213A: Continued Skynet R-COP/PROMPT Observations of the Optical Afterglow
Date
2014-02-19T16:39:45Z (10 years ago)
From
Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet <atrotter@physics.unc.edu>
A. Trotter, J. Haislip, D. Reichart, A. LaCluyze, A. Verveer, T. Spuck,
A. Foster, N. Frank, K. Ivarsen, J. Moore, M. Nysewander, R. Beauchemin,
T. Berger, M. Carroll, H. T. Cromartie, R. Egger, M. Hinckle, A.
Ireland, M. Maples, L. Scott, and J. A. Crain report:
Skynet continued observing the Swift-BAT localization of GRB 140213A
(Holland et al., GCN 15825, Swift trigger 586569) with the 14-inch R-COP
telescope at Perth Observatory, Australia, and with four 16-inch
telescopes of the PROMPT array at CTIO, Chile. Previous observations
with R-COP began at 59s and continued until 92m post-trigger (Trotter et
al., GCN 15828). Observations resumed with PROMPT-CTIO at t=5.5h, and
continued at R-COP and PROMPT-CTIO until t=32h, during which time the
afterglow rebrightened (Trotter et al., GCN 15859).
R-COP and PROMPT-CTIO took a total of 284x160s exposures in BVRI between
t~5-5.3d. In stacked images, we continue to detect an uncatalogued
optical source in R and I bands at the position of the source detected
by the Swift UVOT (Siegel & Holland, GCN 15826). After the rebrightening
at t~1d, the source clearly resumed fading.
Band tmid mag
I 5.3d 20.7 (+/-0.2)
R 5.2d 21.3 (+/-0.3)
V 5.3d >21.7
B 5.3d >21.6
An updated light curve is at:
http://www.skynet.unc.edu/grb/grb140213a_3.png
Magnitudes are in the Vega system, calibrated to ten APASS-DR7 stars in
the field, and have not been corrected for the Galactic foreground
extinction corresponding to E(B-V)=0.07 (Schlegel et al. 1998).
No further Skynet observations are scheduled.
