The Italian Supernovae Search Project (ISSP) is the new collaboration between the main four rItalian groups operating in the extragalactic supernova research field: the CROSS of Col Drusciè Observatory - Cortina d'Ampezzo (Belluno), the MOSS of Montarrenti Observatory (Siena), the MASACAS of Monte Agliale Observatory (Lucca) and the MVSS of Montecatini Val di Cecina Observatory (Pisa).

The collaboration aims to create a joint supernova research program that allows to monitor many stellar field as frequently as possible searching for supernova explosions.

The Italian Supernovae Search Project (ISSP) is the new collaboration between the main four rItalian groups operating in the extragalactic supernova research field: the CROSS of Col Drusciè Observatory - Cortina d'Ampezzo (Belluno), the MOSS of Montarrenti Observatory (Siena), the MASACAS of Monte Agliale Observatory (Lucca) and the MVSS of Montecatini Val di Cecina Observatory (Pisa).

The collaboration aims to create a joint supernova research program that allows to monitor many stellar field as frequently as possible searching for supernova explosions.
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SN in UGC 1641 - 13 agosto 2015

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We report a new SN located near UGC 1641, discovered by Paolo Campaner on behalf of ISSP.

PSN J02090990+3159515, CBAT TOCP discovered 2015/08/13.081 by Paolo Campaner (ISSP)
Found in UGC 1641 at R.A. = 02h09m09s.90, Decl. = +31°59'51".5
Located 3" west and 12" north of the center of UGC 1641

Mag 18.0:8/16, Type II (z=0.0167)

See the spectrum of SN (Padova-Asiago spectrum)

 

Asiago spectroscopic classification of PSN J02090990+3159515 in UGC 1641

ATel #7909; This e-mail address is being protected from spambots. You need JavaScript enabled to view it
on 14 Aug 2015; 14:21 UT
Credential Certification: Lina Tomasella ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it )

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of PSN J02090990+3159515 in the galaxy UGC 1641, discovered by P. Campaner (ISSP). Informations on this transient are available from the "Bright Supernova" website (http://www.rochesterastronomy.org/snimages/) and the CBAT Transient Object Followup Reports (http://www.cbat.eps.harvard.edu/index.html). The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

 
Name                         | Discovery      | z       |   Type   | Observation date |  Phase      | Notes  
PSN J02090990+3159515        | 2015-08-13.081 | 0.0167  |   II     | 2015-08-13.980   |  ~3-4 weeks | (1)      

(1) The spectrum shows P-Cygni lines of H, Fe II and Na I, typically observed in Type II SNe during the H recombination phase. However, these lines in PSN J02090990+3159515 are very narrow. The expansion velocity of the ejecta is very low, when compared e.g. with the low-velocity Type IIP SN 2005cs (Pastorello et al. 2009, MNRAS, 394, 2266). From the minimum of Halpha, we infer an ejecta velocity of about 2100 km/s (slightly lower, about 1700 km/s, from the minimum of Hbeta).

The classification was done with SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.

Padova Asiago SN group

SN in NGC 6801 - 9 agosto 2015

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We report a new SN discovered by Paolo Campaner on behalf of Italian Supernovae Search Project, near the galaxy NGC 6801.

, CBAT TOCP discovered 2015/08/09.024 by Paolo Campaner (ISSP)
Found in NGC 6801 at R.A. = 19h27m37s.70, Decl. = +54°22'34".0
Located 17" east and 12" north of the center of NGC 6801.

Mag 19.1:8/12 (18.4:8/9), Type II (z=0.0145) (References: ATEL 7902; SN 2011df)

See also attached image and classification ATEL.

 

 

Asiago spectroscopic classification of two supernovae

ATel #7902; G. Terreran, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, L. Tomasella, M. Turatto (INAF OAPd)
on 11 Aug 2015; 09:52 UT
Credential Certification: Lina Tomasella ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it )

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of PSN J19273770+5422340 in the galaxy NGC 6801 and PSN J00422186+2938415 in the galaxy IC 43, both discovered by Paolo Campaner (ISSP). Informations on these transients are also available from the "Bright Supernova" website (http://www.rochesterastronomy.org/snimages/), The ATel, and the CBAT Transient Object Followup Reports (http://www.cbat.eps.harvard.edu/index.html). The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

 
Name                         | Discovery      | z       |   Type   | Phase      | Notes  
PSN J19273770+5422340        | 2015-08-09.024 | 0.0145  |    II    |   +10d     | (1)       
PSN J00422186+2938415        | 2015-08-06.092 | 0.0162  |    Ic    | +2-3 months| (2)  

(1) Best match with normal Type-II SNe around 10 days after maximum light, adopting a redshift z=0.014547 (Springob et al. 2005, ApJS, 160, 149) for the host galaxy NGC 6801. A narrow Halpha component, superposed on the broad Halpha attributed to the SN, probably arises from an H II region close to the location of the SN. The expansion velocity of the ejected material, as inferred from the position of the broad absorption of Halpha, is about 9000 km/s.

(2) The redshift of the host galaxy (IC 43) is from Huchra et al. 1999, ApJS, 121, 287.

Classifications 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.