[vsnet-grb-info 22218] LIGO/Virgo S190426c: DG19ytre and DG19kplb 1.5m OSN imaging and 10.4m GTC spectroscopy
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sun Apr 28 11:43:07 JST 2019
TITLE: GCN CIRCULAR
NUMBER: 24317
SUBJECT: LIGO/Virgo S190426c: DG19ytre and DG19kplb 1.5m OSN imaging and 10.4m GTC spectroscopy
DATE: 19/04/28 02:42:09 GMT
FROM: Alberto J. Castro-Tirado at IAA-CSIC <ajct at iaa.es>
A. F. Valeev and V. V. Sokolov (SAO-RAS), A. J. Castro-Tirado, Y.-D. Hu,
X.-Y. Li, A. Ayala, E. Fernandez-Garcia and F. J. Aceituno (IAA-CSIC),
I. Carrasco, A. Castellon and C. Perez del Pulgar (UMA), M. D.
Caballero-Garcia (ASU-CAS), S. B. Pandey (ARIES) and N. Castro-Rodriguez
(GRANTECAN, IAC, ULL), on behalf of a larger collaboration, report:
Following the detection of the two new transients DG19ytre and DG19kplb
(Andreoni et al., GCN 24268) within the error area of the GW event
S190426c (LIGO Scientific Collaboration and the Virgo Collaboration, GCN
24237), we observed the two targets with the 1.5m telescope at the
Observatorio de Sierra Nevada (Spain) in the BVRI-bands, starting on Apr
27, 20:53 UT. In addition, optical spectra for each target (1200s)
covering the range 3700-7500 A were obtained with the 10.4m GTC
telescope equipped with OSIRIS in La Palma (Spain) starting on Apr 27,
21:40 UT.
DG19kplb is found to be in the outskirts of its host galaxy at a
redshift z = 0.09123. The spectrum resembles that of a broad-line Type
Ic SN at the same redshift past maximum.
DG19ytre is north of a galaxy at redshift z = 0.1825 and displays Type
Ia SN features consistent with z = 0.1386.
Therefore none of these two newly reported transients seem to be related
to the GW event S190426c.
We acknowledge the excellent support from the GTC staff.
More information about the vsnet-grb-info
mailing list