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NUMBER: 21677 SUBJECT: LIGO/VIRGO G298048: AAT/AAO spectroscopic observations of the GW counterpart candidate SSS17a/DLT17ck DATE: 17/08/24 15:31:25 GMT FROM: Igor Andreoni at Swinburne U of Tech <igor.andreoni@gmail.com> I. Andreoni (Swinburne), J. Cooke (Swinburne) on behalf of OzGrav and C. Lidman, E. Elmer and T. Farrell (AAO) We performed spectroscopic observations of the GW counterpart candidate SSS17a/DLT17ck (Coulter et al., LVC GCN 21529; Allam et al., LVC GCN 21530; Sheng Yang et al., LVC GCN 21531) with the AAOmega spectrograph at the 4m Anglo-Australian Telescope. The AAOmega spectrograph covers a wavelength range 3700-8800 AA with a resolution R=1700. We obtained 4 usable exposures of 600s each, starting at 2017-08-24.037 UT. A preliminary analysis shows a red, largely featureless spectrum with no obvious features other than host galaxy absorption lines. -- ThomasKupfer - 24 Aug 2017 | |||||||
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