A. Simoncelli, P. D'Avanzo, S. Campana, S. Covino, D. Fugazza,
A. Cucchiara, S. Kalogerakos, G. Tagliaferri, F.M. Zerbi (INAF-OAB);
G. Chincarini (UNIMIB & INAF-OAB); G.L. Israel, L. Stella (INAF-OAR);
D. Malesani (SISSA); A. De Luca (IASF, Milan) on behalf of a larger
Following the improved position for the likely afterglow of GRB
040223 (GCN 2525) provided by De Luca et al. (GCN 2547), we
re-analysed our NTT + SofI data (JHKs filters, Tagliaferri et
al. GCN 2535).
Inside the new error circle (99% confidence, 4.5'' radius)
we found 13 objects: no one of these presents a typical afterglow
behaviour (i.e. a monotonic decay).
For a list of these objects please refer to the table at the
following URL http://www.merate.mi.astro.it/~taglia/GRB040223/grb.html.
Objects within the error circle are identified with ID 1, 10, 12, 14,
16, 19, 20, 21, 23, 24, 25, 30, 32.
Limiting Ks magnitude is found to be ~ 20 (referred to the 2MASS catalog).
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