Publications (35)
Type II supernova spectral diversity I: Observations, sample characterization and spectral line evolution
Claudia P. Gutiérrez, Joseph P. Anderson, Mario Hamuy +23
We present 888 visual-wavelength spectra of 122 nearby type II supernovae (SNe II) obtained between 1986 and 2009, and ranging between 3 and 363 days post explosion. In this first…
SPHERE IRDIS and IFS astrometric strategy and calibration
Anne-Lise Maire, Maud Langlois, Kjetil Dohlen +16
We present the current results of the astrometric characterization of the VLT planet finder SPHERE over 2 years of on-sky operations. We first describe the criteria for the selecti…
SN 2009ip á la PESSTO: No evidence for core-collapse yet
Morgan Fraser, Cosimo Inserra, Anders Jerkstrand +35
We present observations of the interacting transient SN 2009ip, from the start of the outburst in October 2012 until the end of the 2012 observing season. The transient reached a p…
MITS: the Multi-Imaging Transient Spectrograph for SOXS
Adam Rubin, Sagi Ben-Ami, Ofir Hershko +45
The Son Of X-Shooter (SOXS) is a medium resolution spectrograph R~4500 proposed for the ESO 3.6 m NTT. We present the optical design of the UV-VIS arm of SOXS which employs high ef…
Supernova Statistics
Enrico Cappellaro, Roberto Barbon, Massimo Turatto
The statistics of SN discoveries is used to reveal selection biases of past and current SN searches and to gain insight on the progenitor scenarios for the different SN types. We a…
Signatures of an eruptive phase before the explosion of the peculiar core-collapse SN 2013gc
Andrea Reguitti, Andrea Pastorello, Giuliano Pignata +12
We present photometric and spectroscopic analysis of the peculiar core-collapse SN 2013gc, spanning seven years of observations. The light curve shows an early maximum followed by…
SN 2009ip at late times - an interacting transient at +2 years
Morgan Fraser, Rubina Kotak, Andrea Pastorello +31
We present photometric and spectroscopic observations of the interacting transient SN 2009ip taken during the 2013 and 2014 observing seasons. We characterise the photometric evolu…
SN 1986E eight years after outburst: a link to SN 1957D?
Enrico Cappellaro, John I. Danziger, Massimo Turatto
We report on the optical recovery of SN~1986E 7.1 and 7.9 years after explosion. The spectra are dominated by broad H and [O~I] 6300,6364 emission lines with a minor cont…
Spectroscopy of the type Ia supernova SN 2002er: days -11 to +215
Rubina Kotak, Peter Meikle, Giuliano Pignata +8
We present an extensive set of optical spectroscopy of the nearby type Ia supernova, SN 2002er, with 24 epochs spanning -11 to +34 days. Its spectral evolution is fairly typical of…
Architecture of the SOXS instrument control software
Davide Ricci, Andrea Baruffolo, Bernardo Salasnich +45
SOXS (Son Of X-Shooter) is a new spectrograph for the ESO NTT telescope, currently in the final design phase. The main instrument goal is to allow the characterization of transient…
Type II Supernovae as Probes of Cosmology
Dovi Poznanski, Eddie Baron, Stephane Blondin +26
- Constraining the cosmological parameters and understanding Dark Energy have tremendous implications for the nature of the Universe and its physical laws. - The pervasive limit of…
The metamorphosis of SN1998bw
Ferdinando Patat, Enrico Cappellaro, John Danziger +23
We present and discuss the photometric and spectroscopic evolution of the peculiar SN1998bw, associated with GRB980425, through an analysis of optical and near IR data collected at…
Multiwavelength observations of Fast Radio Bursts
Luciano Nicastro, Cristiano Guidorzi, Eliana Palazzi +3
The origin and phenomenology of the Fast Radio Burst (FRB) remains unknown despite more than a decade of efforts. Though several models have been proposed to explain the observed d…
The spectacular evolution of Supernova 1996al over 15 years: a low energy explosion of a stripped massive star in a highly structured environment
Stefano Benetti, Nikolai N. Chugai, Victor P. Utrobin +9
Spectrophotometry of SN 1996al carried out throughout 15 years is presented. The early photometry suggests that SN 1996al is a Linear type-II supernova, with an absolute peak of Mv…
Independent circuits in basal ganglia and cortex for the processing of reward and precision feedback
David Pascucci, Clayton Hickey, Jorge Jovicich +1
In order to understand human decision making it is necessary to understand how the brain uses feedback to guide goal-directed behavior. The ventral striatum (VS) appears to be a ke…
The Luminous Type Ic SN 1992ar at z=0.145
Alejandro Clocchiatti, Mark M. Phillips, Nicholas B. Suntzeff +13
We present spectroscopic and photometric observations of SN1992ar, the more distant SN in the Calan/Tololo Survey. We compare its spectrum with those of nearby Type Ia and Ic SNe a…
Supernova types and rates
Enrico Cappellaro, Massimo Turatto
We review the basic properties of the different supernova types identified in the current taxonomy, with emphasis on the more recent developments. To help orienting in the variegat…
A low energy core-collapse supernova without a hydrogen envelope
Stefano Valenti, Andrea Pastorello, Enrico Cappellaro +14
The final fate of massive stars depends on many factors, including mass, rotation rate, magnetic fields and metallicity. Theory suggests that some massive stars (initially greater…
The fast evolving type Ib Supernova SN 2015dj in NGC 7371
Mridweeka Singh, Kuntal Misra, Stefano Valenti +17
We present the detailed optical evolution of a type Ib SN 2015dj in NGC 7371, using data spanning up to 170 days after discovery. SN 2015dj shares similarity in light curve…
The rate of supernovae: biases and uncertainties
Enrico Cappellaro, Massimo Turatto
Using an updated SN list and galaxy parameters from the RC3 catalog, we have revisited two well know biases affecting SN searches. We show that the bias in the central region of ga…
A spectroscopically normal type Ic supernova from a very massive progenitor
Stefano Valenti, Stefan Taubenberger, Andrea Pastorello +17
We present observations of the Type Ic supernova (SN Ic) 2011bm spanning a period of about one year. The data establish that SN 2011bm is a spectroscopically normal SN Ic with mode…
Optical design of the SOXS spectrograph for ESO NTT
Ricardo Zanmar Sanchez, Matteo Munari, Adam Rubin +45
An overview of the optical design for the SOXS spectrograph is presented. SOXS (Son Of X-Shooter) is the new wideband, medium resolution (R>4500) spectrograph for the ESO 3.58m NTT…
Extensive optical and near-infrared observations of the nearby, narrow-lined type Ic SN 2007gr: days 5 to 415
Deborah J. Hunter, Stefano Valenti, Rubina Kotak +26
We present photometric and spectroscopic observations at optical and near-infrared wavelengths of the nearby type Ic SN 2007gr. These represent the most extensive data-set to date…
The Highly Energetic Expansion of SN2010bh Associated with GRB 100316D
Filomena Bufano, Elena Pian, Jesper Sollerman +50
We present the spectroscopic and photometric evolution of the nearby (z = 0.059) spectroscopically confirmed type Ic supernova, SN 2010bh, associated with the soft, long-duration g…
Photometric and spectroscopic evolution of the peculiar Type IIn SN 2012ab
Anjasha Gangopadhyay, Massimo Turatto, Stefano Benetti +15
We present an extensive ( 1200 d) photometric and spectroscopic monitoring of the Type IIn supernova (SN) 2012ab. After a rapid initial rise leading to a bright maximum (M$_{…
Supernovae and Gaia
Giuseppe Altavilla, Maria Teresa Botticella, Enrico Cappellaro +1
Despite decades of dedicated efforts there are still basic questions to answer with regard to Supernova progenitor systems and explosion mechanisms. In particular, in the last year…
Asiago Supernova classification program: blowing out the first two hundred candles
Lina Tomasella, Stefano Benetti, Enrico Cappellaro +8
We present the compilation of the first 221 supernovae classified during the Asiago Classification Program (ACP). The details of transients classification and the preliminarily red…
The VIS detector system of SOXS
Rosario Cosentino, Matteo Aliverti, Salvatore Scuderi +46
SOXS will be a unique spectroscopic facility for the ESO NTT telescope able to cover the optical and NIR bands thanks to two different arms: the UV-VIS (350-850 nm), and the NIR (8…
Classification of Supernovae
Massimo Turatto
The current classification scheme for supernovae is presented. The main observational features of the supernova types are described and the physical implications briefly addressed.…
Evidence for Type Ia Supernova Diversity from Ultraviolet Observations with the Hubble Space Telescope
Xiaofeng Wang, Lifan Wang, Alexei V. Filippenko +93
We present ultraviolet (UV) spectroscopy and photometry of four Type Ia supernovae (SNe 2004dt, 2004ef, 2005M, and 2005cf) obtained with the UV prism of the Advanced Camera for Sur…
Observations of A Fast-Expanding and UV-Bright Type Ia Supernova SN 2013gs
Tianmeng Zhang, Xiaofeng Wang, Xulin Zhao +21
In this paper, we present extensive optical and ultraviolet (UV) observations of the type Ia supernova (SN Ia) 2013gs discovered during the Tsinghua-NAOC Transient Survey. The phot…
The present rate of Supernovae
Massimo Turatto
We present and discuss the most recent determination of the rate of Supernovae in the local Universe. A comparison with other results shows a general agreement on the gross values…
The Absolute Magnitudes of Type Ia Supernovae in the Ultraviolet
Peter J. Brown, Peter W. A. Roming, Peter Milne +19
We examine the absolute magnitudes and light-curve shapes of 14 nearby(redshift z = 0.004--0.027) Type Ia supernovae (SNe~Ia) observed in the ultraviolet (UV) with the Swift Ultrav…
The metamorphosis of Supernova SN2008D/XRF080109: a link between Supernovae and GRBs/Hypernovae
Paolo A. Mazzali, Stefano Valenti, Massimo Della Valle +38
The only supernovae (SNe) to have shown early gamma-ray or X-ray emission thus far are overenergetic, broad-lined Type Ic SNe (Hypernovae - HNe). Recently, SN 2008D shows several n…
The tetra-lobed planetary nebula NGC 1501
Franco Sabbadin, Stefano Benetti, Enrico Cappellaro +1
Direct imagery and long-slit, spatially resolved echellograms of the high excitation planetary nebula NGC 1501 allowed us to study in detail the expansion velocity field, the physi…