TITLE: GCN CIRCULAR NUMBER: 16341 SUBJECT: GRB 140408A: Withdrawal of afterglow candidate DATE: 14/05/30 06:57:16 GMT FROM: Fabian Knust at MPE/GROND GRB 140408A: Withdrawal of afterglow candidate F. Knust, K. Varela, C. Delvaux (all MPE Garching), D.A. Kann (TLS Tautenburg) and J. Greiner (MPE Garching) report on behalf of the GROND team: We observed the GRB 140408A field again on further three epochs, simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPG telescope at ESO La Silla Observatory (Chile). The afterglow candidate reported in Varela et al. (GCN #16089) remained constant, thus this source is a fore- or background source and not the afterglow of GRB 140408A. For the first epoch as reported in Varela et al. (GCN #16089), no other source is seen in the 1".8 Swift-XRT refined error circle (http://www.swift.ac.uk/xrt_positions/00595141/) down to limiting magnitudes (all in the AB system) of g' > 25.8 mag, r' > 25.6 mag, i' > 25.0 mag, z' > 25.0 mag, J > 22.1 mag, H > 21.5 mag, and K > 20.0 mag. The given limits are based on calibrating the images against GROND zeropoints and 2MASS field stars, and are not corrected for the Galactic foreground extinction corresponding to a reddening of E_(B-V)= 0.16 in the direction of the burst (Schlegel et al. 1998).