Padova-Asiago Supernova Group
The Asiago Transient Classification Program

Presentation
The program started in 2011 with the aim to classify all transients that are accessible from Asiago and are bright enough for our telescope/instrumentation. We use mainly the 1.82m Copernico telescope of Cima Ekar and, if not available, the 1.22m Galileo telescope of the Pennar station. A few cases of transients classified by our group with other facilities (eg. TNG) are included in the database.
Transient classification information and spectra (fits format) are made immediately available at our site. The spectra are semi-automatic reduction with archive calibration data. Please keep this in mind when using them.
For SN classification we compare the output of two automatic SN classification codes: Gelato (Harutyunyan et al. 2008, A&A 488, 383) and SNID (Blondin and Tonry 2007, Ap.J. 666, 1024).
If you use some of the information posted in these pages please make a reference to the paper Tomasella etal. 2014, A.N. 335, 841.

Latest classifications
sn galaxy RA DEC discoverer type redshift ref class fits
  02:12:28.19 +46:53:33.23 ATLAS CV   ATEL
fits
SDSS J235754.69+2830 23:57:54.73 +28:30:12.33 Zhijian Xu et al. Ic 0.029813 ATEL
fits
PGC5530 01:28:58.84 +19:33:55.00 ISSP Ciabattari Ia 0.0428 ATEL
fits
UGC 10602 16:54:23.79 +41:20:09.70 Italian Supernovae Search Project ISSP Ia 0.028308 ATEL
fits
SDSS J161346.03+2255 16:13:46.15 +22:54:59.14 ATLAS Ia 0.032 ATEL
fits


AT2017ghp
AT2017ghp
Discovered by: ATLAS

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of SN 2017giq, discovered by Zhijian Xu et al. in SDSS J235754.69+283007.1, and the observations of AT 2017ghp and AT 2017gio discovered by Torny et al (ATLAS)

The observation was performed with the Asiago 1.82 m Copernico Telescope equipped with AFOSC (range 340-820 nm; resolution 1.4 nm).


Survey Name   | IAU Name      | Discovery date (UT)  | Discovery mag | Observation (UT)    |  Type  | z        | Notes|
PTSS-17vkg    | SN 2017giq    |  2017-08-27 15:15:18 |      18.8     |2017-08-29 22:09:09  |  SN Ic |  0.029813| (1)  |
ATLAS17juy    | AT 2017ghp    |  2017-08-23 14:00:57 |     17.53     |2017-08-29 23:49:52  |    ?   |     ?    | (2)  |

(1) The spectrum is consistent with that of Type Ic SN events around maximum light, at a redshift 0.0298, according to the redshift of the host galaxy SDSS J235754.69+283007.1 (Sloan Digital Sky Survey Data Release 13 as obtained Jan. 31, 2017 from http://www.sdss.org/dr13/data_access/bulk/);<\br> (2) Featureless, blue continuum. A faint source is visible in archival SDSS release 3 survey at the transient position. This is possibly a Galactic CV;

We also pointed the field of ATLAS17jxi (AT 2017gio ) on 2017-08-29 23:08:23UT, no object brighter than ~22.0 mag (unfiltered) has been seen at the transient position.

Classification were done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.