Giovanni Tessicini - Academia.edu (original) (raw)
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Università degli Studi di Firenze (University of Florence)
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Papers by Giovanni Tessicini
CBET 799 available at Central Bureau for Astronomical Telegrams.
IAUC 4845 available at Central Bureau for Astronomical Telegrams. IAUC 4845 available at Central ... more IAUC 4845 available at Central Bureau for Astronomical Telegrams. IAUC 4845 available at Central Bureau for Astronomical Telegrams.
We observed the field of the short hard GRB100816A (Swift trigger 431764; Oates et al., GCN 11102... more We observed the field of the short hard GRB100816A (Swift trigger 431764; Oates et al., GCN 11102) with the Italian 3.6m TNG telescope (La Palma, Canary Islands) equipped with the DOLORES camera. Observations started on Aug 16 at 03:22 UT (~2.8 hrs after the burst) under very poor weather conditions (high cloudiness and high humidity). We acquired a R band image of the GRB field for a total exposure time of 180s. We clearly detect a source consistent with the one reported by (Oates et al., GCN 11102). This souce, located at RA (J2000)=23:26:57.58; Dec(J2000)=+26:34:42.7 (+/-0.5''), showed a magnitude R~20.5 (calibrated against USNO B1.0) at the epoch of the observation. Due to its fading behavior with respect to the UVOT observation, we confirm that this source is the optical afterglow of GRB100816A
New BVI CCD photometry is presented for 60 RR Lyrae variables in the globular cluster M3. Light c... more New BVI CCD photometry is presented for 60 RR Lyrae variables in the globular cluster M3. Light curves have been constructed and ephemerides have been (re)-derived for all of them. Four stars (i.e. V29, V136, V155 and V209), although recognized as variables, had no previous period determinations. Also, the period derived for V129 is significantly different from the one published by Sawyer-Hogg (1973). Light curve parameters, i.e. mean magnitudes, amplitudes and rise-times, have been derived. The discussion of these results in the framework of the stellar evolution and pulsation theories will be presented in a forthcoming paper.
CBET 799 available at Central Bureau for Astronomical Telegrams.
IAUC 4845 available at Central Bureau for Astronomical Telegrams. IAUC 4845 available at Central ... more IAUC 4845 available at Central Bureau for Astronomical Telegrams. IAUC 4845 available at Central Bureau for Astronomical Telegrams.
We observed the field of the short hard GRB100816A (Swift trigger 431764; Oates et al., GCN 11102... more We observed the field of the short hard GRB100816A (Swift trigger 431764; Oates et al., GCN 11102) with the Italian 3.6m TNG telescope (La Palma, Canary Islands) equipped with the DOLORES camera. Observations started on Aug 16 at 03:22 UT (~2.8 hrs after the burst) under very poor weather conditions (high cloudiness and high humidity). We acquired a R band image of the GRB field for a total exposure time of 180s. We clearly detect a source consistent with the one reported by (Oates et al., GCN 11102). This souce, located at RA (J2000)=23:26:57.58; Dec(J2000)=+26:34:42.7 (+/-0.5''), showed a magnitude R~20.5 (calibrated against USNO B1.0) at the epoch of the observation. Due to its fading behavior with respect to the UVOT observation, we confirm that this source is the optical afterglow of GRB100816A
New BVI CCD photometry is presented for 60 RR Lyrae variables in the globular cluster M3. Light c... more New BVI CCD photometry is presented for 60 RR Lyrae variables in the globular cluster M3. Light curves have been constructed and ephemerides have been (re)-derived for all of them. Four stars (i.e. V29, V136, V155 and V209), although recognized as variables, had no previous period determinations. Also, the period derived for V129 is significantly different from the one published by Sawyer-Hogg (1973). Light curve parameters, i.e. mean magnitudes, amplitudes and rise-times, have been derived. The discussion of these results in the framework of the stellar evolution and pulsation theories will be presented in a forthcoming paper.