[vsnet-grb-info 22217] LIGO/Virgo S190426c: GROWTH India follow-up

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  24316
SUBJECT: LIGO/Virgo S190426c: GROWTH India follow-up
DATE:    19/04/28 02:06:16 GMT
FROM:    Harsh Kumar at Indian Inst of Tech,Bombay  <harshkosli13 at gmail.com>

G. Waratkar, H. Kumar, V. Bhalerao, V. Karambelkar (IITB), G. C. Anupama,
J. Stanzin (IIA) report on behalf of the GROWTH collaboration:

We followed up the localization region of the GW candidate event S190426c
(LVC et al. GCN 24168) with the GROWTH-India telescope. We obtained 37
r-band overlapping images covering a total area of 12.3 square degrees,
with 9.43% probability of containing the GW counterpart. Exposures were 600
seconds long and reached a typical depth of 20.6 magnitude. The field
centers (given below) were chosen in coordination with ZTF and DECAM (GCN
24257) to cover the northernmost part of the sky not accessible to them.
Data processing is underway. These fields contain 332 galaxies from the
GLADE catalog and 6 galaxies from NED. We inspected the NED galaxies
(listed below) and do not find any candidate counterparts near them.

List of NED galaxies:
Name, RA, Dec
2MASX J22163720+8655469, 334.156, 86.929
VII Zw 938, 314.169, 87.880
HDCE 1209, 342.180, 86.83
UGC 12387, 346.084, 86.749
UGC 12377, 345.857, 86.766
CGCG 360-004, 18.977, 85.165

List of observed fields:
    RA        Dec
315.000 87.441
003.214 84.882
012.273 85.979
018.750 85.613
009.000 84.516
010.385 85.247
003.462 85.247
343.125 87.076
004.091 85.979
016.071 84.882
337.500 87.807
322.500 87.807
354.375 87.076
355.500 86.345
353.571 87.441
005.625 87.076
356.538 85.247
335.000 86.710
331.875 87.076
015.000 84.516
340.714 87.441
325.000 86.710
355.000 86.710
009.643 84.882
013.500 86.345
017.308 85.247
003.750 85.613
327.857 87.441
005.000 86.710
352.500 87.807
345.000 86.710
008.438 84.150
356.250 85.613
320.625 87.076
004.500 86.345
011.250 85.613
328.500 86.345

The GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7 degree
field of view, set up by the Indian Institute of Astrophysics and the
Indian Institute of Technology Bombay with support from the Indo-US Science
and Technology Forum (IUSSTF) and the Science and Engineering Research
Board (SERB) of the Department of Science and Technology (DST), Government
of India (https://sites.google.com/view/growthindia/). It is located at the
Indian Astronomical Observatory (Hanle), operated by the Indian Institute
of Astrophysics (IIA).