{
  "createdOn": 1044224200000,
  "subject": "Type Ic SN2003L (SN/GRB?), optical spectrum",
  "body": "T. Matheson, P. Challis, R. P. Kirshner (CfA) and P. M. Garnavich\n(Notre Dame)\n\nWe obtained spectra of the type Ic SN 2003L (IAUC 8048; GCN 1834) with\nthe MMT 6.5m telescope and the Blue Channel spectrograph on Jan 29.46\nUT.  Two 600s exposures have a resolution of 0.6 nm and cover the\nwavelength range 320 to 880 nm.  The supernova appears to be a normal\ntype Ic, similar to SN 1994I near maximum.  Expansion velocities\nderived from the minima of the Ca II (rest 395.1 nm) and Na I D (rest\n589.3 nm) lines are 12 000 km/s and 11 700 km/s, respectively.  At 4\ndays before maximum, SN 1994I had a velocity of 16 100 km/s for Ca II\nand 11 100 for Na I.  As has been noted already (IAUC 8057), the\nexpansion velocity derived from the Si II (rest 635.5 nm) line of 5200\nkm/s is quite low, compared with 12 200 km/s for SN 1994I (at four\ndays before maximum).  The Si II line velocity was larger than 12 000\nkm/s for the first twenty days after explosion for SN 1998bw, well\nabove the value for SN 2003L.  The spectrum is available at\nhttp://cfa-www.harvard.edu/cfa/oir/Research/supernova/RecentSN.html.\n\nThis message may be cited.",
  "circularId": 1846,
  "submitter": "Peter Garnavich at U of Notre Dame  <pgarnavi@miranda.phys.nd.edu>",
  "eventId": "SN 2003L",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "email": "pgarnavi@miranda.phys.nd.edu",
  "editedOn": 1777052734504,
  "bibcode": "2003GCN..1846....1M",
  "version": 2
}