{
  "subject": "GRB 250806A: Gemini observations of host galaxy candidate",
  "createdOn": 1755879168577,
  "submittedHow": "web",
  "circularId": 41499,
  "eventId": "GRB 250806A",
  "format": "text/plain",
  "body": "C. Sevilla (Cornell), G. Srinivasaragavan (UMD), D. A. Perley (LJMU), A. Y. Q. Ho (Cornell), A. Bochenek (LJMU) report:\n\nWe observed the candidate host galaxy of GRB 250806A (Xie et al., GCN 41243, Malesani et al. GCN 41279) beginning UTC 2025-08-13 13:14:40 with the Gemini Multi-Object Spectrograph on Gemini North under program GN-2025B-Q-125 (PI: Srinivasaragavan).  We use a 1 arcsecond slit, the R400 grating, and the GG455 filter.  We obtained four exposures of 450 seconds each, two at a central wavelength of 520 nm and two at 525 nm.\n\nWe obtain a redshift of 0.367 from galactic Hβ, [O II], and [O III] emission lines. At this redshift, using the 4 - 120 keV flux from Bouchet et al. (GCN 41287) and observed burst time of 20 seconds, we estimate the burst has an isotropic equivalent energy of ~ 8e49 erg.  \n\nWe thank the Gemini Contact Scientists and the Gemini Helpdesk for their assistance in observing and data reduction.\n",
  "bibcode": "2025GCN.41499....1S",
  "submitter": "gsriniv2@umd.edu"
}