Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J09084248+4448132

PSN J09084248+4448132   2014 10 26.41  *  09 08 42.48 +44 48 13.2  16.4 U    1W  25S  U4798     D 0

2014 10 31.13436

This transient was observed on 2014 10 31.13436 by G. Masi and P. Catalano, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 16.2 (R mags for the reference stars from UCAC-4; the PSN is affected by the galaxy's light). We also performed astrometry, getting the following end figures: 42.47; 14.0 (J2000.0, mean residuals of 0.2" on both axes).

2014 10 31.13436

CORRECTED - This transient was observed on 2014 10 31.13436 by G. Masi and P. Catalano, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 16.2 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 42.47; 14.0 (J2000.0, mean residuals of 0.2" on both axes).

2014 10 31.1351

Several low resolution spectra of this transient were obtained on 2014 10 31.1351 by G. Masi abd P. Catalano, remotely using the 14" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. 3, 300-seconds images were taken using a 100 lines/mm grating, with a dispersion of 34.5 angstroms/pixel. They were co-added and the resulting image shows Si II absorption around 6280 angstroms, suggesting this is a type Ia supernova. Assuming a recessional velocity of 8023 km/s for the host galaxy (UGC 09267, via NED), an expansion velocity of 10800 km/s is derived from the minimum of the Si II 6350-angstrom line.