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[vsnet-grb-info 753] GRB030226: optical observations and refined redshift

Date: Wed, 26 Feb 2003 12:25:37 -0500 (EST)
To: vsnet-grb-info@kusastro.kyoto-u.ac.jp
From: GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>
Subject: [vsnet-grb-info 753] GRB030226: optical observations and refined redshift
Affiliation: NASA-GSFC LHEA
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TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1884
SUBJECT: GRB030226: optical observations and refined redshift
DATE:    03/02/26 17:22:19 GMT
FROM:    Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>

M. Ando, K. Ohta, C. Watanabe (Kyoto Univ.),
K. Aoki, Y. Ohyama, K. S. Kawabata, S. Harasawa, D. Scarla (Subaru NAOJ),  
and N. Kawai (Tokyo Tech) report:

We obtained R, I, and z' images of the afterglow of GRB030226(=H10893)
at Feb 26.65 (UT) with FOCAS attached to Subaru 8.2m telescope.  The
R-band magnitude of the OT is derived to be 19.0+-0.2 using four stars
close to the OT in the USNO-A2.0 catalog.

With further analyses of the optical spectra reported in GCN 1882, 
we find the highest redshift for the absorbers to be  z=1.99.

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