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Swift Observations of SN 2007od

ATEL # 1259; S. Immler (NASA/CRESST/GSFC), and P. J. Brown (PSU), on behalf of the Swift satellite team
on 6 Nov 2007; 14:23 UT
Password Certification: Stefan Immler (immler@milkyway.gsfc.nasa.gov)

Subjects: Optical, Ultra-Violet, X-ray, Nova, Supernova

Swift Ultraviolet/Optical Telescope (UVOT) and X-Ray Telescope (XRT) observed the type II SN 2007od (CBET #1116, CBET #1119) on 2007-11-05.67 UT. The following UVOT magnitudes were measured: v = 14.20.1 (276 s exposure time), b = 14.30.1 (312 s), u = 13.50.1 (312 s), uvw1 [181-321nm] = 14.10.1 (998 s), uvm2 [166-268 nm] = 14.50.1 (299 s), and uvw2 [112-264 nm] = 14.70.1 (1250 s). These magnitudes are on the UVOT photometric system (see GCN Circ. 6614) which in the optical is close to the Johnson UBV. They have not been corrected for extinction.

No X-ray source is detected at the position of the SN in the 4.0 ks Swift XRT observation obtained simultaneously with the UVOT observations. The 3-sigma upper limit to the XRT net count rate is 2.6 E-03 cts/s, corresponding to an unabsorbed (0.2-10 keV band) X-ray flux of <1.4 E-13 erg/cm/cm/s and a luminosity of <1.0E40 erg/s for an adopted thermal plasma spectrum with a temperature of kT = 10 keV, a Galactic foreground column density of N_H = 3.44E+20 (Dickey & Lockman, 1990, ARAA 28) and a distance of 24.5 Mpc (z=0.005784, NED; H_o = 71 km/s/Mpc, Omega_M = 1/3, Omega_L = 2/3).


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