2017ApJ...848L..29D

Query : 2017ApJ...848L..29D

2017ApJ...848L..29D - Astrophys. J., 848, L29-L29 (2017/October-3)

Observations of the first electromagnetic counterpart to a gravitational-wave source by the TOROS Collaboration.

DIAZ M.C., MACRI L.M., GARCIA LAMBAS D., MENDES DE OLIVEIRA C., NILO CASTELLON J.L., RIBEIRO T., SANCHEZ B., SCHOENELL W., ABRAMO L.R., AKRAS S., ALCANIZ J.S., ARTOLA R., BEROIZ M., BONOLI S., CABRAL J., CAMUCCIO R., CASTILLO M., CHAVUSHYAN V., COELHO P., COLAZO C., COSTA-DUARTE M.V., CUEVAS LARENAS H., DEPOY D.L., DOMINGUEZ ROMERO M., DULTZIN D., FERNANDEZ D., GARCIA J., GIRARDINI C., GONCALVES D.R., GONCALVES T.S., GUROVICH S., JIMENEZ-TEJA Y., KANAAN A., LARES M., LOPES DE OLIVEIRA R., LOPEZ-CRUZ O., MARSHALL J.L., MELIA R., MOLINO A., PADILLA N., PENUELA T., PLACCO V.M., QUINONES C., RAMIREZ RIVERA A., RENZI V., RIGUCCINI L., RIOS-LOPEZ E., RODRIGUEZ H., SAMPEDRO L., SCHNEITER M., SODRE L., STARCK M., TORRES-FLORES S., TORNATORE M. and ZADROZNY A.

Abstract (from CDS):

We present the results of prompt optical follow-up of the electromagnetic counterpart of the gravitational-wave event GW170817 by the Transient Optical Robotic Observatory of the South Collaboration. We detected highly significant dimming in the light curves of the counterpart (Δg=0.17±0.03 mag, Δr=0.14±0.02 mag, Δi=0.10±0.03 mag) over the course of only 80 minutes of observations obtained ∼35 hr after the trigger with the T80-South telescope. A second epoch of observations, obtained ∼59 hr after the event with the EABA 1.5 m telescope, confirms the fast fading nature of the transient. The observed colors of the counterpart suggest that this event was a "blue kilonova" relatively free of lanthanides.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): gamma-ray burst: individual: 170817A - stars: neutron - stars: neutron

VizieR on-line data: <Available at CDS (J/ApJ/848/L29): table1.dat>

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GrW 170814 GWE 03 11.0 -44 57           ~ 157 0
2 NGC 4993 Sy2 13 09 47.6908761600 -23 23 02.314044636   13.34   11.92   ~ 397 0
3 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
4 PSR J1915+1606 Psr 19 15 27.99999 +16 06 27.4034     22.5     ~ 1032 1
5 GrW 151226 GWE ~ ~           ~ 275 1
6 GrW 170104 GWE ~ ~           ~ 186 1
7 GrW 150914 GWE ~ ~           ~ 674 1

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