A GTC Study of the Afterglow and Host Galaxy of the Short-Duration GRB 100816A
2013
We present the results from an optical monitoring campaign aimed at studying the
afterglowproperties of the short GRB 100816A. We implemented a new way of processing the Swift -BAT data, and based on it we reclassified this burst as short, discarding the initial classification as long. Observations were carried out mainly with the GTC Telescope within the four following days after the burst to investigate the optical photometry of its
afterglow, and a year later to localize the host. We completed the optical imaging with the 1.23 m and 3.5 m CAHA Telescopes. We built and fitted the nIR-optical
SEDfor the characterization of the host. The best fit of the
SED( χ 2 /d.o.f. = 1.656) obtained for assumed values of a solar metallicity, and an extinction of A V = 0.2mag is obtained for a starburst galaxy with a dominant
stellar populationaging about 360
Myr.
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