{
  "bibcode": "2019GCN.25478....1D",
  "body": "K. De, J. Jencson, M. M. Kasliwal, D. Goldstein, I. Andreoni (Caltech)\nreport on behalf of the GROWTH (Global Relay of Observatories Watching\nTransients Happen) collaboration\n\nWe further optimized the reduction of the Keck II NIRES spectrum of\nDG19wxnjc/AT2019npv (Goldstein et al. GCN 25393) reported earlier in\nDe et al. GCN 25461. With better telluric correction, the He I 10830\nline reported in our previous GCN is now more clearly identifiable\nwith a P-Cygni profile at z=0.056 (Jonker et al. GCN 25454) and\nvelocity of approximately 9000 km/s. This would be consistent with a\nstripped envelope supernova and thus, unrelated to LIGO/Virgo\nS190814bv (LVC et al. GCN 25324, GCN 25333). However, the observed\nfaint luminosity of -15.75 mag (Annis et al. GCN 25458) suggests there\ncould have been a brighter peak before discovery.\n\nWe are grateful to the W. M. Keck Observatory staff, especially Greg\nDoppmann and Terry Stickel, for facilitating this partnership target\nof opportunity observation. We thank the observer Leslie Young for her\nkind co-operation.",
  "circularId": 25478,
  "createdOn": 1566802370000,
  "email": "kde@astro.caltech.edu",
  "subject": "LIGO/Virgo S190814bv: Keck II NIRES classification of DG19wxnjc/AT2019npv as a stripped envelope supernova",
  "submitter": "Kishalay De at Caltech, GROWTH  <kde@astro.caltech.edu>",
  "eventId": "LIGO/Virgo S190814bv"
}