[vsnet-grb-info 5953] GRB 080413A: REM detection of the NIR Afterglow

Sun Apr 13 18:06:26 JST 2008

TITLE:   GCN CIRCULAR
NUMBER:  7597
SUBJECT: GRB 080413A: REM detection of the NIR Afterglow
DATE:    08/04/13 09:06:15 GMT
FROM:    Angelo Antonelli at Obs. Astro. di Roma  <a.antonelli at oa-roma.inaf.it>

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L.A. Antonelli, P. D'Avanzo, D. Malesani, S. Covino, D. Fugazza, L.  
Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V.  
D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi,  
G.L. Israel, E. Maiorano, N. Masetti, A. Melandri, E.J.A. Meurs, L.  
Nicastro, E. Palazzi, E. Pian, F. Piranomonte, S. Piranomonte, L.  
Stella, G. Stratta, G. Tagliaferri, G. Tosti, V. Testa, S.D. Vergani,  
and F. Vitali, report on behalf of the REM team:

The robotic 60-cm REM telescope located at La Silla (Chile) observed  
automatically the field of the GRB 080413A (Beardmore et al., GCN  
7594) starting about 1.3 hours after the burst due to object  
visibility constraints.
Observation started as soon as the object is risen so the Airmass was  
large.

A preliminary investigation of our earliest images (R,z,J,H,K) showed  
that the candidate optical counterpart (Rykoff et al. GCN 7593,  
Beardmore et al., GCN 7594, Klotz et al., GCN 7595) is observed in  
all bands. At the beginning of REM observation, the object had a H  
mag of about H=15.2 calibrated against 2MASS and not corrected for  
galactic extinction.

This message may be cited.

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<html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space; ">
<div><br></div><div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; "><font face=3D"Courier" size=3D"4" =
style=3D"font: 13.0px Courier">L.A. Antonelli, P. D'Avanzo, D. Malesani, =
S. Covino, D. Fugazza, L.=A0Calzoletti, S. Campana,=A0G. Chincarini, =
M.L. Conciatore, S. Cutini, V.=A0D'Elia, F. D'Alessio, F. Fiore, P. =
Goldoni, D. Guetta, C. Guidorzi, G.L.=A0Israel, E. Maiorano, N. Masetti, =
A. Melandri, E.J.A. Meurs, L. Nicastro,=A0E. Palazzi, E. Pian, F. =
Piranomonte, S. Piranomonte, L. Stella, G.=A0Stratta, G. Tagliaferri, G. =
Tosti, V. Testa, S.D. Vergani, and F.=A0Vitali, report on behalf of the =
REM team:</font></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
13px/normal Courier; min-height: 16px; "><br></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Courier" size=3D"4" style=3D"font: =
13.0px Courier">The robotic 60-cm REM telescope located at La Silla =
(Chile) observed=A0automatically the field of the GRB 080413A (Beardmore =
et al., GCN 7594)=A0starting about 1.3 hours after the burst due to =
object visibility constraints.=A0</font></div><div style=3D"margin-top: =
0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font =
face=3D"Courier" size=3D"4" style=3D"font: 13.0px Courier">Observation =
started as soon as the object is risen so the Airmass was =
large.=A0</font></div><div style=3D"margin-top: 0px; margin-right: 0px; =
margin-bottom: 0px; margin-left: 0px; font: normal normal normal =
13px/normal Courier; min-height: 16px; "><br></div><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Courier" size=3D"4" style=3D"font: =
13.0px Courier">A preliminary investigation of our earliest images =
(R,z,J,H,K) showed that the candidate optical counterpart (Rykoff=A0et =
al. GCN 7593,=A0Beardmore et al., GCN 7594,=A0Klotz et al., GCN 7595) is =
observed in all bands. At the beginning of REM observation, the object =
had a H mag of about H=3D15.2 calibrated against 2MASS and not corrected =
for galactic extinction.=A0</font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font =
class=3D"Apple-style-span" face=3D"Courier" size=3D"3"><span =
class=3D"Apple-style-span" style=3D"font-size: =
13px;"><br></span></font></div><div style=3D"margin-top: 0px; =
margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><font =
class=3D"Apple-style-span" face=3D"Courier" size=3D"3"><span =
class=3D"Apple-style-span" style=3D"font-size: 13px;"><div =
style=3D"margin-top: 0px; margin-right: 0px; margin-bottom: 0px; =
margin-left: 0px; "><font face=3D"Courier" size=3D"4" style=3D"font: =
13.0px Courier">This message may be =
cited.</font></div></span></font></div><div><font =
class=3D"Apple-style-span" face=3D"Courier" size=3D"3"><span =
class=3D"Apple-style-span" style=3D"font-size: =
13px;"><br></span></font></div></div></body></html>=

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