TITLE: GCN CIRCULAR NUMBER: 39196 SUBJECT: LIGO/Virgo/KAGRA S250206dm: SOAR galaxy targeted observations DATE: 25/02/07 09:16:25 GMT FROM: Igor Andreoni at JSI/UMD/NASA igor.andreoni@gmail.com
James Freeburn (Swinburne/OzGrav), Jonathan Carney (UNC), Igor Andreoni (UNC), David Cook (IPAC):
We followed up the gravitational wave trigger S250206dm (GCN 39175, GCN 39178, GCN 39184) using the Goodman High Throughput Spectrograph mounted on the SOAR telescope in imaging mode via Target of Opportunity observations (PI Andreoni). We observed 33 galaxies in the highest probability region (Cook at al. GCN 39174, GCN 39177, GCN 39185) using the list produced by crossmatching the sky localization with the NED Local Volume Sample (NED-LVS; Cook et al. 2023). Specifically, we considered the galaxy list obtained using the LVK S250206dm-6-Update sky localization (Cook at al. GCN 39185), focusing on the Southern high probability area.
Observations were acquired from 2025-02-07 06:18 UT until 08:48 UT. Each galaxy was observed with 60s exposures in g+i filters. A list of the observed galaxies is presented in the table below. The completed pointings were uploaded to TreasureMap: https://treasuremap.space/alerts?graceids=S250206dm
Data analysis is ongoing.
object_name coordinates WISEA J161708.84-674024.7 16:17:08.87 -67:40:22.49 WISEA J162759.57-693615.7 16:27:59.57 -69:36:15.71 WISEA J154439.56-665529.0 15:44:39.56 -66:55:29.08 WISEA J155633.83-693531.5 15:56:33.83 -69:35:31.55 WISEA J160843.41-685023.4 16:08:43.41 -68:50:23.44 WISEA J154441.36-665502.6 15:44:41.37 -66:55:02.61 WISEA J160915.94-690504.9 16:09:15.95 -69:05:04.94 WISEA J161332.77-674621.1 16:13:32.78 -67:46:21.13 WISEA J165614.58-695645.9 16:56:14.58 -69:56:46.00 WISEA J163330.53-670950.7 16:33:30.54 -67:09:50.72 WISEA J154538.24-703944.1 15:45:38.25 -70:39:44.12 WISEA J153057.77-694546.5 15:30:57.77 -69:45:46.58 WISEA J160838.27-700230.8 16:08:38.27 -70:02:30.85 WISEA J111435.41-485220.0 11:14:35.41 -48:52:20.02 WISEA J161213.79-710729.1 16:12:13.79 -71:07:29.14 ESO 069-IG 006N 16:38:11.94 -68:26:08.84 WISEA J165744.21-680430.9 16:57:44.21 -68:04:30.93 WISEA J165527.54-702337.9 16:55:27.54 -70:23:37.91 WISEA J110452.75-455440.5 11:04:52.76 -45:54:40.57 WISEA J163202.83-693109.0 16:32:02.84 -69:31:09.01 WISEA J164922.44-690054.7 16:49:22.44 -69:00:54.76 WISEA J161735.32-701416.0 16:17:35.32 -70:14:16.00 WISEA J163253.56-702946.2 16:32:53.57 -70:29:46.22 WISEA J164915.17-690004.8 16:49:15.17 -69:00:04.87 ESO 069- G 003 16:24:32.07 -68:49:12.91 WISEA J161946.23-690837.2 16:19:46.23 -69:08:37.26 WISEA J153854.81-680647.5 15:38:54.81 -68:06:47.55 WISEA J151821.27-691417.9 15:18:21.28 -69:14:17.93 WISEA J155653.84-695749.1 15:56:53.88 -69:57:49.18 WISEA J165438.30-670413.8 16:54:38.30 -67:04:13.82 WISEA J163224.97-700239.7 16:32:24.97 -70:02:39.78 WISEA J110509.11-450337.3 11:05:09.11 -45:03:37.38 WISEA J161822.73-683741.1 16:18:22.73 -68:37:41.20
We thank the NOIRLab and SOAR staff for their excellent support.
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