Spectroscopy of PSN J00513484+2943149 in UGC 525
ATel #5176; A. A. Rachubo and D. C. Leonard (San Diego State University), K. Follette, P. Sheehan, V. Bailey, and D. McCarthy (University of Arizona), J. Moustakas (Siena College), J. Barrows, E. Bosset, E. Buckley, D. Burd, J. Calahan, I. Ceesay, E. Douglas, C. Feeney, T. Fornari, A. Fox, H. Fishwick, H. Gano, C. Green, J. Griggs, K. Hart, S. Hart, K. Hartman, A. Holt, E. Hooper, S. Hume, S. Jaeggli, D. Lesser, M. Kerr, C. Kopans-Johnson, K. Kumar, A. Lackey, S. Laube, E. Marshall, M. Martinez, G. Mehta, K. Melbourne, M. Meshel, C. Myers, E. Puranen, A. Schlingman, W. Schlingman, W. M. Schlingman, K. Shen, N. Stock, C. Stillman, J. Tinker, and B. Whitesell (2013 Advanced Teen Astronomy Camp)
on 28 Jun 2013; 18:29 UT
Credential Certification: D. C. Leonard (leonard@astro.caltech.edu)
Subjects: Optical, Supernovae
We report that inspection of a low-dispersion optical spectrum
(range 370-680 nm) of PSN J00513484+2943149 (CBAT TOCP), obtained in heavy twilight with
the 2.3-m Bok telescope (+ Boller & Chivens spectrograph) at Steward
Observatory on June 28 UT, shows it to be an aging type-Ia supernova. After
correcting for a redshift of 4931 km/s for the assumed host galaxy, UGC 525
(Falco et al. 1999, PASP, 111, 438; via NED), reasonable matches are found with
normal SNe Ia at epochs ranging between 40 and 65 days after maximum light,
although there is a notable absence of emission in PSN J00513484+2943149 near
5000 Angstrom (attributed to Fe II; Branch et al. 2008, PASP, 120, 135) that is
usually seen at this phase. The most convincing individual spectral match is
made with SN 1999gp at 50 days post-maximum (Matheson et al. 2008, AJ, 135,
1598), which exhibited a broad, SN 1991T-like light-curve (dm15[B] = 0.80;
Hicken et al. 2009, ApJ, 700, 331), a "shallow silicon" maximum-light spectrum
(Jha et al. 2000, IAUC 7341 ; Branch et al. 2009, PASP, 121, 238), and somewhat
muted 5000 Angstrom emission at this phase.
