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 NGC 6956 - 11 luglio 2015

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We report the discover of SN in NGC 6956, spotted by Massimo Caimmi on behalf of ISSP, on 2015/07/11.017. The OT is located 7" west and 14" south of the center of NGC 6956. Mag 18.0, type Ia (redshift z = 0.0155). See attached image and classification ATEL.

 

Spectroscopic classification of three SNe at Asiago

ATel #7796; L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF OAPd)
on 14 Jul 2015; 07:21 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Enrico Cappellaro ( 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 ASASSN-15mi in Mrk 0283a, and ASASSN-15mj, in 2MASX J14021617+3339415 (ATel #7790) discovered during the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN), and PSN J20435314+1230304 discovered in NGC6956 by Massimo Caimmi (Italian Supernova Search Program ISSP). Informations on these transients are available from the "Bright Supernova" website (http://www.rochesterastronomy.org/snimages/) and and the CBAT "Transient Objects Confirmation Page" (http://www.cbat.eps.harvard.edu/unconf/tocp.html). The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

 
Name                  | Date (UT)    |     z     |   Type   | Phase      | Notes   
ASASSN-15mi           | 20150713.97  |    0.0344 |   Ia-pec | before max | (1)  
ASASSN-15mj           | 20150713.90  |    0.0344 |    ?     |   -        | (2) 
PSN J20435314+1230304 | 20150714.01  |    0.0155 |   Ia     | before max | (3) 

(1) Best match is with 91T-like, SN 1997br few days before maximum

(2) Blue, featureless continuum. Possible type II SN at early phase.

(3) Best match with several Type Ia SNe few days before maximum B-band light. The expansion velocity of the ejected material, as inferred from the position of the absorption of the SiII 6355 \AA, is about 13000 km/s.

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.

SN J19535968+4956078 in UGC 11494

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We report the discover of SN J195355968+4956078 near UGC 11494 galaxy. The new OT was spotted by Paolo Campaner on behalf of ISSP, on 2015/06/12.010, located 36" West and 8" South from the center of UGC 11494. Type unknown. Mag 18.2.

See also the CBAT TOCP and ATEL.

 

CBAT "Transient Object Followup Reports"

 

PSN J19535968+4956078

 

PSN J19535968+4956078   2015 06 12.0097*  19 53 59.68 +49 56 07.8  18.2 U   36W   8S  U11494    3 0




2015 06 12.0097

Paolo Campaner report the discovery of PSN (unfiltered magnitude = 18.2) on three images (limiting magnitude 19.5) obtained on June 12.0097 UT with a 0,4m reflector F/5.5 + CCD and exposure 75s at Ponte di Piave - Italy, in the course of the Italian Supernovae Search Project.




2015 06 13.88494

This transient was observed on 2015 06 13.88494 by G. Masi, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 180-seconds exposures, unfiltered, show the source at mag. 19.0 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 59.62; 05.4 (J2000.0, mean residuals of 0.1" on both axes).

 

Spectroscopic classification of two type II SNe at Asiago

ATel #7712; S. Benetti, L. Tomasella, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, L. Tartaglia, G. Terreran, M. Turatto (INAF OAPd)
on 25 Jun 2015; 10:36 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Enrico Cappellaro ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it )

Subjects: Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of PSN J19535968+4956078 in UGC 11494 discovered by P. Campaner (ISSP) on 2015 Jun 12.01 and ASASSN-15ln (Atel #7670) in UGC 546 discovered by the All Sky Automated Survey for SuperNovae (ASAS-SN) on 2015 Jun 19.58. Informations on these transients are also 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 observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

  
 Name                  | Date (UT)    |  v     | Type  |  Phase     | Notes  
PSN J19535968+4956078 | 20150624.98  |  7518  |  II-P | ~2 weeks   |   1     
ASASSN-15ln           | 20150625.06  |  4501  |  II   | early      |   2  

Redshifts of the host galaxies are from NED

(1) The expansion velocity inferred from the position of the Halpha absorption is about 10500 km/s. Photometric monitoring from the ISSP collaboration shows that the object has maintained approximately constant magnitude over a period of about 10 days, suggesting that the object is a Type II-plateau SN.

(2) Halpha emissione is still very shallow. The expansion velocity inferred from the position of the Hbeta absorption is about 11000 km/s.

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.