{
  "subject": "LIGO/Virgo S190814bv: Palomar 200-in spectroscopic redshift and host galaxy properties of ASKAP source AT2019osy",
  "eventId": "LIGO/Virgo S190814bv",
  "bibcode": "2019GCN.25494....1P",
  "createdOn": 1566936329000,
  "circularId": 25494,
  "submitter": "Daniel Perley at Liverpool JMU  <d.a.perley@ljmu.ac.uk>",
  "email": "d.a.perley@ljmu.ac.uk",
  "body": "Daniel A. Perley (LJMU), Yashvi Sharma (Caltech), Viraj Karambelkar \n(Caltech), Igor Andreoni (Caltech), and Mansi M. Kasliwal (Caltech) \nreport on behalf of the GROWTH (Global Relay of Observatories Watching \nTransients Happen) collaboration\n\nWe obtained a spectrum of the host galaxy of the reported radio and \noptical transient AT2019osy (Stewart et al., GCN #25487; Andreoni et \nal., GCN #25488) using the Double Beam Spectrograph (Oke & Gunn 1982) on \nthe Palomar 200-inch Hale Telescope. The spectrum was reduced using the \npyraf-dbsp pipeline (Bellm & Sesar 2016).\n\nThe spectrum is dominated by red continuum that is likely primarily \nassociated with the host galaxy; no obvious broad features are evident. \nWe identify several narrow emission lines (H-alpha; [NII]6548,6583; \n[SII]6716,6731; possibly [OII]3727) at a common redshift of 0.0733, \nconsistent within 2-sigma of the LVC distance constraint (LIGO/Virgo \ncollaboration, GCN #25324).  H-beta and [OIII]5007 are not detected in \nthe spectrum.\n\nThe flux ratio of the [NII] and H-alpha lines suggests AGN flux likely \ncontributes to the emission lines, although this assessment is tentative \nsince the line fluxes have not been corrected for any underlying stellar \ncontinuum features.  Further analysis is ongoing.\n\nGROWTH is a worldwide collaboration comprising of Caltech, USA; IPAC, \nUSA, WIS, Israel; OKC, Sweden; JSI/UMd, USA; U Washington, USA; DESY, \nGermany; MOST, Taiwan; UW Milwaukee, USA; LANL USA; Tokyo Tech, Japan; \nIIT-B, India; IIA, India; LJMU, UK; TTU, USA; USyd, Australia; and SDSU, \nUSA. GROWTH acknowledges generous support of the NSF under PIRE Grant No \n1545949.\n\n\n\n\n\n\n\nDisclaimerNone"
}