Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

PSN J21015899-4816259

PSN J21015899-4816259   2012 08 19.122 *  21 01 58.99 -48 16 25.9  15.3 R    7W   2N  ESO235-37 2 1


2012 08 19.122

A. Klotz (Institut de Recherche en Astrophysique et Planetologie, France) on behalf of the TAROT Collaboration reports the discovery of an apparent supernova (mag about 15.6 +/- 0.2) on 2012 Aug. 19.122 using public images of the 0.25m robotic telescope TAROT La Silla observatory, Chile. SN is located at about R.A. = 21h01m58.99s, Decl. = -48o16'25.9" (equinox J2000.0), which is 7" W and 2" N from the nucleus of ESO 235- G 037. The supernova appear in an prediscovery image taken on 2012 Aug. 10.313 at mag 18.2 R. The supernova does not appear in an image taken on 2012 Aug. 07.133 (limiting magnitude 18.6 R). Spectroscopy was obtained by F. Colas (Institut de Mecanique Celeste et de Calcul des Ephemerides Paris, France) A. Peyrot and J.P. Teng (Association de Gestion de l'Observatoire Reunionnais d'Astronomie, Les Makes, Reunion island, France) using the 60 cm telescope at Les Makes, Reunion island, France (IAU station 181). A grating filter (300 tr/mm) gives a low dispersion (48A/pix). Date of observation is 2012 Aug. 21.6. We compared the spectrum of PSN J21015899-4816259 with spectra (provided by C. Buil http://www.astrosurf.com/buil/supernovae/2011/index.htm) of various SN types. The spectrum of PSN J21015899-4816259 is very similar to that of SN 2011fe in early stage (5 days before the maximum) redshifted to z=0.0186 (the redshift of the host galaxy ESO 235- G 037). Si II lines are identified. Comparisons with type II supernovae spectra are bad. Additional informations at http://cador.obs-hp.fr/sn_tarot/PSN_J21015899-4816259/



2012 08 23.517

This possible supernova in ESO 235-37 was seen with 3 x 15 min images using an infrared filter Astrometry: RA 21 01 58.97 Dec -48 16 26.8 Photometry: 16.3 +/- 0.6 IR > 700 nm (R as ref) These data were collected by Joseph Brimacombe, Cairns, Australia Link to image and further information http://www.flickr.com/photos/43846774@N02/7848777388/


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