TITLE: GCN CIRCULAR NUMBER: 24104 SUBJECT: LIGO/Virgo S190412m: Hobby-Eberly Telescope VIRUS observations of target galaxies. DATE: 19/04/12 11:42:28 GMT FROM: J. Craig Wheeler at U.Texas Austin M. J. B. Rosell, Matthew Shetrone, J. Craig Wheeler, Karl Gebhardt, and Aaron Zimmerman, on behalf of the LIGO Hobby-Eberly Telescope Response (LIGHETR) team report the spectroscopic observation of the field of S190412m (GCN #24098) with the VIRUS IFU instrument on the HET. We sampled a prioritized list of 7 galaxies from the GLADE catalog that overlapped with the LIGO probability map and the observable pupil of the HET. The resulting data cube covers the wavelength 350 to 550 nm at a resolving power of 750. The effective limiting magnitude in the B band was 22 magnitudes. Each field is 50x50 arc seconds. We observed, in order, galaxies 213.485626+32.349361, 214.212296+31.609276, 214.199814+32.783714, 214.708557+32.501812, 214.905014+33.619785, 215.054092+33.497181 and 218.171326+34.651875 that were numbers 2, 3, 5, 4, 6, 1, and 13, respectively, on our a priori mass-weighted galaxy list. Report of the results will be submitted later. -- J. Craig Wheeler Samuel T. and Fern Yanagisawa Regents Professor of Astronomy University and University of Texas System Distinguished Teaching Professor President, American Astronomical Society, 2006-2008 Department of Astronomy 2515 Speedway, Stop C1400 Austin, TX 78712-1205 512-471-6407 http://www.as.utexas.edu/~wheel Supernova Explosions http://www.springer.com/us/book/9783662550526 Cosmic Catastrophes http://ebooks.cambridge.org/ebook.jsf?bid=CBO9780511536625 The Krone Experiment, Krone Ascending http://www.amazon.com/Krone-Ascending-ebook/dp/B00926QEGW