Publications (212)
PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects
S. J. Smartt, S. Valenti, M. Fraser +99
The Public European Southern Observatory Spectroscopic Survey of Transient Objects (PESSTO) began as a public spectroscopic survey in April 2012. We describe the data reduction str…
Interacting supernovae and supernova impostors. SN 2007sv: the major eruption of a massive star in UGC 5979
L. Tartaglia, A. Pastorello, S. Taubenberger +15
We report the results of the photometric and spectroscopic monitoring campaign of the transient SN 2007sv. The observables are similar to those of type IIn supernovae, a well-known…
The polarimetric imaging mode of VLT/SPHERE/IRDIS I: Description, data reduction and observing strategy
J. de Boer, M. Langlois, R. G. van Holstein +31
Context. Polarimetric imaging is one of the most effective techniques for high-contrast imaging and characterization of protoplanetary disks, and has the potential to be instrument…
Sub-0.1" optical imaging of the Z CMa jets with SPHERE/ZIMPOL
S. Antoniucci, L. Podio, B. Nisini +15
Crucial information on the mass accretion-ejection in young stars can be obtained from high spatial resolution images of jets in sources with recurrent accretion outbursts. Using t…
Type Ia supernova science 2010-2020
D. A. Howell, A. Conley, M. Della Valle +47
In the next decade Type Ia supernovae (SNe Ia) will be used to test theories predicting changes in the Dark Energy equation of state with time. Ultimately this requires a dedicated…
ESC observations of SN 2005cf. I. Photometric Evolution of a Normal Type Ia Supernova
A. Pastorello, S. Taubenberger, N. Elias-Rosa +20
We present early-time optical and near-infrared photometry of supernova (SN) 2005cf. The observations, spanning a period from about 12 days before to 3 months after maximum, have b…
Exceptionally Bright Type Ib Supernova 1991D
S. Benetti, D. Branch, M. Turatto +5
Photometric and spectroscopic observations of the peculiar Type Ib Supernova 1991D are presented. SN 1991D was exceptionally bright for a Type Ib supernova. The He I lines were rat…
Supernovae and their host galaxies - IV. The distribution of supernovae relative to spiral arms
L. S. Aramyan, A. A. Hakobyan, A. R. Petrosian +7
Using a sample of 215 supernovae (SNe), we analyze their positions relative to the spiral arms of their host galaxies, distinguishing grand-design (GD) spirals from non-GD (NGD) ga…
Performance of the VLT Planet Finder SPHERE II. Data analysis and Results for IFS in laboratory
D. Mesa, R. Gratton, A. Zurlo +33
We present the performance of the Integral Field Spectrograph (IFS) of SPHERE, the high-contrast imager for the ESO VLT telescope designed to perform imaging and spectroscopy of ex…
Observational constraints on the optical and near-infrared emission from the neutron star-black hole binary merger S190814bv
K. Ackley, L. Amati, C. Barbieri +151
On 2019 August 14, the LIGO and Virgo interferometers detected a high-significance event labelled S190814bv. Preliminary analysis of the GW data suggests that the event was likely…
SN 2009kn - the twin of the Type IIn supernova 1994W
E. Kankare, M. Ergon, F. Bufano +17
We present an optical and near-infrared photometric and spectroscopic study of supernova (SN) 2009kn spanning ~1.5 yr from the discovery. The optical spectra are dominated by the n…
A giant outburst two years before the core-collapse of a massive star
A. Pastorello, S. J. Smartt, S. Mattila +32
The death of massive stars produces a variety of supernovae, which are linked to the structure of the exploding stars. The detection of several precursor stars of Type II supernova…
The SPHERE infrared survey for exoplanets (SHINE). III. The demographics of young giant exoplanets below 300 au with SPHERE
A. Vigan, C. Fontanive, M. Meyer +108
The SHINE project is a 500-star survey performed with SPHERE on the VLT for the purpose of directly detecting new substellar companions and understanding their formation and early…
MICADO: first light imager for the E-ELT
R. Davies, J. Schubert, M. Hartl +80
MICADO will equip the E-ELT with a first light capability for diffraction limited imaging at near-infrared wavelengths. The instrument's observing modes focus on various flavours o…
Supernova 1994aj: a probe for pre-supernova evolution and mass loss from the progenitor
S. Benetti, E. Cappellaro, I. J. Danziger +3
Extensive photometric and spectroscopic observations of SN1994aj until 540d after maximum light have been obtained. The photometry around maximum suggests that the SN belongs to th…
The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae
A. G. Karapetyan, A. A. Hakobyan, L. V. Barkhudaryan +4
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of core-collapse (CC) supernovae (SNe) in host galaxies with diff…
Performance of the VLT Planet Finder SPHERE I. Photometry and astrometry precision with IRDIS and IFS in laboratory
A. Zurlo, A. Vigan, D. Mesa +26
The new planet finder for the Very Large Telescope (VLT), the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), just had its first light in Paranal. A dedicated instr…
The SPHERE infrared survey for exoplanets (SHINE)- I Sample definition and target characterization
S. Desidera, G. Chauvin, M. Bonavita +105
Large surveys with new-generation high-contrast imaging instruments are needed to derive the frequency and properties of exoplanet populations with separations from 5 to 300…
Luminous Red Novae: Stellar Mergers or Giant Eruptions?
A. Pastorello, E. Mason, S. Taubenberger +36
We present extensive datasets for a class of intermediate-luminosity optical transients known as "luminous red novae" (LRNe). They show double-peaked light curves, with an initial…
The Type IIn SN 1995G: Interaction with the CSM
A. Pastorello, M. Turatto, S. Benetti +7
We present the photometric and spectroscopic evolution of the type IIn SN 1995G in NGC 1643, on the basis of 4 years of optical and infrared observations. This supernova shows very…
SPHERE: the exoplanet imager for the Very Large Telescope
J. -L. Beuzit, A. Vigan, D. Mouillet +108
Observations of circumstellar environments to look for the direct signal of exoplanets and the scattered light from disks has significant instrumental implications. In the past 15…
The Type IIn Supernova 2010bt: The Explosion of a Star in Outburst
N. Elias-Rosa, S. D. Van Dyk, S. Benetti +12
It is well known that massive stars (M > 8 M_sun) evolve up to the collapse of the stellar core, resulting in most cases as a supernova (SN) explosion. Their heterogeneity is relat…
The properties of the peculiar Type Ia SN~1991bg. Analysis and discussion of two years of observations
M. Turatto, S. Benetti, E. Cappellaro +5
Observations of the peculiar type Ia SN~1991bg in NGC~4374 collected at ESO--La Silla and Asiago are presented and discussed. The broad--band light curves in the early months have…
RACE-OC Project: Rotation and variability in the epsilon Chamaeleontis, Octans, and Argus stellar associations
S. Messina, S. Desidera, A. C. Lanzafame +2
We aim at determining the rotational and magnetic-related activity properties of stars at different stages of evolution. We focus our attention primarily on members of young stella…
Low Luminosity Type II Supernovae: Spectroscopic and Photometric Evolution
A. Pastorello, L. Zampieri, M. Turatto +10
In this paper we present spectroscopic and photometric observations for four core collapse supernovae (SNe), namely SNe 1994N, 1999br, 1999eu and 2001dc. Together with SN 1997D, we…
SN 2004aw: Confirming Diversity of Type Ic Supernovae
S. Taubenberger, A. Pastorello, P. A. Mazzali +24
Optical and near-infrared observations of the Type Ic supernova (SN) 2004aw are presented, obtained from day -3 to day +413 with respect to the B-band maximum. The photometric evol…
Tomography of the low excitation planetary nebula NGC 40
F. Sabbadin, E. Cappellaro, S. Benetti +2
Spatially resolved, long-slit echellograms at different position angles of the bright, low excitation planetary nebula NGC 40 indicate that, the higher is the gas excitation, the f…
SN 2015ba: A type IIP supernova with a long plateau
Raya Dastidar, Kuntal Misra, G. Hosseinzadeh +20
We present optical photometry and spectroscopy from about a week after explosion to 272 d of an atypical Type IIP supernova, SN 2015ba, which exploded in the edge-on galaxy I…
The structure of Planetary Nebulae: theory vs. practice
F. Sabbadin, M. Turatto, R. Ragazzoni +2
This paper - the first of a short series dedicated to the long-stan ding astronomical problem of de-projecting the bi-dimensional apparent morpholog y of a three-dimensional mass o…
Detection of a light echo from SN1998bu
E. Cappellaro, F. Patat, P. A. Mazzali +6
About 500d after explosion the light curve of the Type Ia SN1998bu suddenly flattened and at the same time the spectrum changed from the typical nebular emission to a blue continuu…
SNe 2013K and 2013am: observed and physical properties of two slow, normal Type IIP events
L. Tomasella, E. Cappellaro, M. L. Pumo +28
We present one year of optical and near-infrared photometry and spectroscopy of the Type IIP SNe 2013K and 2013am. Both objects are affected by significant extinction, due to their…
Interacting supernovae and supernova impostors. LSQ13zm: an outburst heralds the death of a massive star
L. Tartaglia, A. Pastorello, M. Sullivan +37
We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as `2013a') followe…
Post conjunction detection of Pictoris b with VLT/SPHERE
A. -M. Lagrange, A. Boccaletti, M. Langlois +102
With an orbital distance comparable to that of Saturn in the solar system, \bpic b is the closest (semi-major axis \,9\,au) exoplanet that has been imaged to orbit a star.…
SOXS Control Electronics Design
G. Capasso, M. Colapietro, S. D'Orsi +46
SOXS (Son Of X-Shooter) is a unique spectroscopic facility that will operate at the ESO New Technology Telescope (NTT) in La Silla from 2020 onward. The spectrograph will be able t…
Five Supernova Survey Galaxies in the Southern Hemisphere: Supernova Ia Rates
A. A. Hakobyan, A. R. Petrosian, G. A. Mamon +9
Based on the database of 56 supernovae (SNe) events discovered in 3838 galaxies of the southern hemisphere, we compute the rate of SNe of different types along the Hubble sequence…
Discovery of a brown dwarf companion to the star HIP 64892
A. Cheetham, M. Bonnefoy, S. Desidera +89
We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT/SPHERE during the SHINE exoplanet survey. The host is a B9.5V member of the Lower-…
Total eclipse of the heart: The AM CVn Gaia14aae / ASSASN-14cn
H. C. Campbell, T. R. Marsh, M. Fraser +82
We report the discovery and characterisation of a deeply eclipsing AM CVn-system, Gaia14aae (= ASSASN-14cn). Gaia14aae was identified independently by the All-Sky Automated Survey…
Determination of Primordial Metallicity and Mixing in the Type IIP Supernova 1993W
E. Baron, Peter E. Nugent, David Branch +3
We present the results of a large grid of synthetic spectra and compare them to early spectroscopic observations of SN 1993W. This supernova was discovered close to its explosion d…
On the progenitor and early evolution of the type II supernova 2009kr
M. Fraser, K. Takats, A. Pastorello +13
We report the identification of a source coincident with SN 2009kr in HST pre-explosion images. The object appears to be a single point source with an intrinsic colour V-I = 1.1 an…
EC-SNe from super-AGB progenitors: theoretical models vs. observations
M. L. Pumo, M. Turatto, M. T. Botticella +6
Using a parametric approach, we determine the configuration of super-AGB stars at the explosion as a function of the initial mass and metallicity, in order to verify if the EC-SN s…
The supernova rate per unit mass
F. Mannucci, M. Della Valle, N. Panagia +5
We compute the rate of supernovae (SNe) of different types along the Hubble sequence normalized to the near-infrared luminosity and to the stellar mass of the parent galaxies. This…
Son of X--Shooter: a multi--band instrument for a multi--band universe
R. Claudi, S. Campana, P. Schipani +47
Son Of X-Shooter (SOXS) will be a new instrument designed to be mounted at the Nasmyth--A focus of the ESO 3.5 m New Technology Telescope in La Silla site (Chile). SOXS is composed…
Hydrogen-rich supernovae beyond the neutrino-driven core-collapse paradigm
G. Terreran, M. L. Pumo, T. -W. Chen +41
We present our study of OGLE-2014-SN-073, one of the brightest Type II SN ever discovered, with an unusually broad lightcurve combined with high ejecta velocities. From our hydrody…
The 3-D ionization structure and evolution of NGC 7009 (Saturn Nebula)
F. Sabbadin, M. Turatto, E. Cappellaro +2
Tomographic and 3-D analyses for extended, emission-line objects are applied to long-slit ESO NTT + EMMI high-resolution spectra of the intriguing planetary nebula NGC 7009, covere…
The lowest frequency Fast Radio Bursts: Sardinia Radio Telescope detection of the periodic FRB 180916 at 328 MHz
M. Pilia, M. Burgay, A. Possenti +35
We report on the lowest-frequency detection to date of three bursts from the fast radio burst FRB 180916, observed at 328 MHz with the Sardinia Radio Telescope (SRT). The SRT obser…
Massive stars exploding in a He-rich circumstellar medium - IX. SN 2014av, and characterization of Type Ibn SNe
A. Pastorello, X. -F. Wang, F. Ciabattari +18
We present spectroscopic and photometric data of the Type Ibn supernova (SN) 2014av, discovered by the Xingming Observatory Sky Survey. Stringent pre-discovery detection limits ind…
Common Envelope ejection for a Luminous Red Nova in M101
N. Blagorodnova, R. Kotak, J. Polshaw +30
We present the results of optical, near-infrared, and mid-infrared observations of M101 OT2015-1 (PSN J14021678+5426205), a luminous red transient in the Pinwheel galaxy (M101), sp…
On the Nature of Unconfirmed Supernovae
L. S. Aramyan, A. R. Petrosian, A. A. Hakobyan +5
We study the nature of 39 unconfirmed supernovae (SNe) from the sky area covered by the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), using available photometric and imagin…
Late-Time Optical Emission From Core-Collapse Supernovae
D. Milisavljevic, R. Fesen, R. Chevalier +3
Ground-based optical spectra and Hubble Space Telescope images of ten core-collapse supernovae (CCSNe) obtained several years to decades after outburst are analyzed with the aim of…
The Peculiar Type II Supernova 1997 D: A Case for a Very Low 56Ni Mass
M. Turatto, P. A. Mazzali, T. R. Young +14
SN 1997D in NGC 1536 is possibly the least luminous and energetic Type II supernova discovered to date. The entire light curve is subluminous, never reaching . The ra…
A study in scarlet -- II. Spectroscopic properties of a sample of Intermediate Luminosity Red Transients
G. Valerin, A. Pastorello, E. Mason +65
We investigate the spectroscopic characteristics of Intermediate Luminosity Red Transients (ILRTs), a class of elusive objects with peak luminosity between that of classical novae…
The Broad-lined Type Ic SN 2003jd
S. Valenti, S. Benetti, E. Cappellaro +27
The results of a world-wide coordinated observational campaign on the broad-lined Type Ic SN 2003jd are presented. In total, 74 photometric data points and 26 spectra were collecte…
A new determination of supernova rates and a comparison with indicators for galactic star formation
E. Cappellaro, R. Evans, M. Turatto
We have computed new estimates of the local rates of supernovae (SNe) adding the updated log of Evans' visual search to our SN search database. In this way, we have accumulated the…
The 3-D ionization structure of the planetary nebula NGC6565
M. Turatto, E. Cappellaro, R. Ragazzoni +2
A detailed study of the planetary nebula NGC6565 has been carried out on long-slit echellograms at six, equally spaced position angles. The expansion velocity field, the c(Hbeta) d…
Comparison of progenitor mass estimates for the type IIP SN 2012A
L. Tomasella, E. Cappellaro, M. Fraser +24
We present the one-year long observing campaign of SN 2012A which exploded in the nearby (9.8 Mpc) irregular galaxy NGC 3239. The photometric evolution is that of a normal type IIP…
Supernova 2002bo: inadequacy of the single parameter description
S. Benetti, P. Meikle, M. Stehle +15
We present optical/near-infrared photometry and spectra of the type Ia SN 2002bo spanning epochs from -13 days before maximum B-band light to +102 days after. The pre-maximum optic…
New spectro-photometric characterization of the substellar object HR 2562 B using SPHERE
D. Mesa, J. -L. Baudino, B. Charnay +32
HR2562 is an F5V star located at ~33 pc from the Sun hosting a substellar companion that was discovered using the GPI instrument. The main objective of the present paper is to prov…
Upper limits for Mass and Radius of objects around Proxima Cen from SPHERE/VLT
D. Mesa, A. Zurlo, J. Milli +36
The recent discovery of an earth-like planet around Proxima Centauri has drawn much attention to this star and its environment. We performed a series of observations of Proxima Cen…
Relative frequencies of supernovae versus properties of spiral hosts
A. A. Hakobyan, T. A. Nazaryan, V. Zh. Adibekyan +8
In this work, we present an analysis of SNe number ratios in spiral galaxies with different morphological subtypes, luminosities, sSFR, and metallicities, to provide important info…
The 3-D shaping of NGC 6741: a massive, fast-evolving Planetary Nebula at the recombination--reionization edge
F. Sabbadin, S. Benetti, E. Cappellaro +2
We infer the gas kinematics, diagnostics and ionic radial profiles, distance and central star parameters, nebular photo- ionization model, spatial structure and evolutionary phase…
Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70
M. Keppler, M. Benisty, A. Müller +123
Young circumstellar disks are of prime interest to understand the physical and chemical conditions under which planet formation takes place. Only very few detections of planet cand…
SN 2005cs in M51 II. Complete Evolution in the Optical and the Near-Infrared
A. Pastorello, S. Valenti, L. Zampieri +31
We present the results of the one year long observational campaign of the type II-plateau SN 2005cs, which exploded in the nearby spiral galaxy M51 (the Whirlpool Galaxy). This ext…
SPHERE / ZIMPOL observations of the symbiotic system R Aqr. I. Imaging of the stellar binary and the innermost jet clouds
H. M. Schmid, A. Bazzon, J. Milli +40
R Aqr is a symbiotic binary system consisting of a mira variable, a hot companion with a spectacular jet outflow, and an extended emission line nebula. We have used R Aqr as test t…
Field Camera Unit for WSO-UV: Phase A Study Report
I. Pagano, F. Bacciotti, L. Bedin +33
World Space Observatory UltraViolet (WSO-UV) is a multipurpose space observatory, made by a 170 cm aperture telescope, capable of UV high-resolution spectroscopy, long slit low-res…
Optical photometry and spectroscopy of the low-luminosity, broad-lined Ic supernova iPTF15dld
E. Pian, L. Tomasella, E. Cappellaro +37
Core-collapse stripped-envelope supernova (SN) explosions reflect the diversity of physical parameters and evolutionary paths of their massive star progenitors. We have observed th…
Optical and IR observations of SN 2002dj: some possible common properties of fast expanding SNe Ia
G. Pignata, S. Benetti, P. A. Mazzali +17
As part of the European Supernova Collaboration we obtained extensive photometry and spectroscopy of the type Ia SN 2002dj covering epochs from 11 days before to nearly two years a…
SN Ib 1990I: Clumping and Dust in the Ejecta?
A. Elmhamdi, I. J. Danziger, E. Cappellaro +4
Photometry and spectra of the type Ib SN 1990I are presented and analysed, covering about 400 days of evolution. The presence of optical helium lines is shown. SN 1990I seems to sh…
The Properties of Hypernovae: SNe Ic 1998bw, 1997ef, and SN IIn 1997cy
K. Nomoto, P. A. Mazzali, T. Nakamura +6
We discuss the properties of the hyper-energetic Type Ic supernovae (SNe Ic) 1998bw and 1997ef and Type IIn supernova (SN IIn) 1997cy. SNe Ic 1998bw and 1997ef are characterized by…
Explosion of a massive, He-rich star at z=0.16
N. Elias-Rosa, A. Pastorello, M. Nicholl +9
We present spectroscopic and photometric data of the peculiar SN 2001gh, discovered by the 'Southern inTermediate Redshift ESO Supernova Search' (STRESS) at a redshift z=0.16. SN 2…
A `Hypernova' model for SN 1998bw associated with gamma-ray burst of 25 April 1998
K. Iwamoto, P. A. Mazzali, K. Nomoto +24
The discovery of the peculiar supernova (SN) 1998bw and its possible association with the gamma-ray burst (GRB) 980425 provide new clues to the understanding of the explo…
Supernova rates from the Southern inTermediate Redshift ESO Supernova Search (STRESS)
M. T. Botticella, M. Riello, E. Cappellaro +11
To measure the supernova (SN) rates at intermediate redshift we performed the Southern inTermediate Redshift ESO Supernova Search (STRESS). Unlike most of the current high redshift…
ASASSN-15no: The Supernova that plays hide-and-seek
S. Benetti, L. Zampieri, A. Pastorello +11
We report the results of our follow-up campaign of the peculiar supernova ASASSN-15no, based on optical data covering ~300 days of its evolution. Initially the spectra show a pure…
First light of the VLT planet finder SPHERE. IV. Physical and chemical properties of the planets around HR8799
M. Bonnefoy, A. Zurlo, J. L. Baudino +63
The system of four planets around HR8799 offers a unique opportunity to probe the physics and chemistry at play in the atmospheres of self-luminous young (~30 Myr) planets. We rece…
SN 2006gy: was it really extra-ordinary?
I. Agnoletto, S. Benetti, E. Cappellaro +12
We present an optical photometric and spectroscopic study of the very luminous type IIn SN 2006gy for a time period spanning more than one year. In photometry, a broad, bright (M_R…
Massive stars exploding in a He-rich circumstellar medium. IV. Transitional Type Ibn Supernovae
A. Pastorello, S. Benetti, P. J. Brown +30
We present ultraviolet, optical and near-infrared data of the Type Ibn supernovae (SNe) 2010al and 2011hw. SN 2010al reaches an absolute magnitude at peak of M(R) = -18.86 +- 0.21.…
The HIP 79977 debris disk in polarized light
N. Engler, H. M. Schmid, Ch. Thalmann +40
We present observations of the known edge-on debris disk around HIP 79977 (HD 146897, F star in Upper Sco, 123 pc), taken with the ZIMPOL differential polarimeter of the SPHERE ins…
RACE-OC Project: Rotation and variability in young stellar associations within 100 pc
S. Messina, S. Desidera, M. Turatto +2
Our goal is to determine the rotational and magnetic-related activity properties of stars at different stages of evolution. We have focussed our attention on 6 young loose stellar…
SN 2009E: a faint clone of SN 1987A
A. Pastorello, M. L. Pumo, H. Navasardyan +26
In this paper we investigate the properties of SN 2009E, which exploded in a relatively nearby spiral galaxy (NGC 4141) and that is probably the faintest 1987A-like supernova disco…
The He-rich Stripped-Envelope Core-Collapse Supernova 2008ax
S. Taubenberger, H. Navasardyan, J. I. Maurer +15
Extensive optical and near-infrared (NIR) observations of the type IIb supernova 2008ax are presented, covering the first year after the explosion. The light curve is mostly simila…
First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR8799 exoplanetary system
A. Zurlo, A. Vigan, R. Galicher +70
The planetary system discovered around the young A-type HR8799 provides a unique laboratory to: a) test planet formation theories, b) probe the diversity of system architectures at…
SN2011hs: a Fast and Faint Type IIb Supernova from a Supergiant Progenitor
F. Bufano, G. Pignata, M. Bersten +33
Observations spanning a large wavelength range, from X-ray to radio, of the Type IIb supernova 2011hs are presented, covering its evolution during the first year after explosion. T…
The impact of spiral density waves on the distribution of Supernovae
A. G. Karapetyan, A. A. Hakobyan, L. V. Barkhudaryan +4
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of supernovae (SNe) in host galaxies with different arm classes.…
A very faint core-collapse supernova in M85
A. Pastorello, M. Della Valle, S. J. Smartt +8
An anomalous transient in the early Hubble-type (S0) galaxy Messier 85 (M85) in the Virgo cluster was discovered by Kulkarni et al. (2007) on 7 January 2006 that had very low lumin…
Peculiar, Low Luminosity Type II Supernovae: Low Energy Explosions in Massive Progenitors?
L. Zampieri, A. Pastorello, M. Turatto +5
A number of supernovae, classified as Type II, show remarkably peculiar properties such as an extremely low expansion velocity and an extraordinarily small amount of Ni in t…
Optical and near-infrared photometry of the Type Ia Supernova 2000E in NGC 6951
G. Valentini, E. Di Carlo, F. Massi +15
We present optical and near-infrared photometry, along with optical spectra, of the Type Ia supernova SN 2000E in the spiral galaxy NGC 6951. It was discovered by the staff of the…
Anomalous extinction behaviour towards the Type Ia SN 2003cg
N. Elias-Rosa, S. Benetti, E. Cappellaro +14
We present optical and near-infrared photometry and spectroscopy of the Type Ia SN 2003cg, which exploded in the nearby galaxy NGC 3169. The observations cover a period between -8.…
Supernovae and their host galaxies - III. The impact of bars and bulges on the radial distribution of supernovae in disc galaxies
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +6
We present an analysis of the impact of bars and bulges on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various mo…
Core-collapse supernova subtypes in luminous infrared galaxies
E. Kankare, A. Efstathiou, R. Kotak +34
We present the discovery and follow-up observations of two CCSNe that occurred in the luminous infrared galaxy (LIRG), NGC3256. The first, SN2018ec, was discovered using the ESO HA…
Supernova rates from the SUDARE VST-Omegacam search II. Rates in a galaxy sample
M. T. Botticella, E. Cappellaro, L. Greggio +24
This is the second paper of a series in which we present measurements of the Supernova (SN) rates from the SUDARE survey. In this paper, we study the trend of the SN rates with the…
The Rate of Supernovae. II. the Selection Effects and the Frequencies Per Unit Blue Luminosity
E. Cappellaro, M. Turatto, Benetti +3
We present new estimates of the observed rates of SNe determined with the {\em control time} method applied to the files of observations of two long term, photographic SN searches…
Lack of observational evidence for quantum structure of space-time at Plank scales
R. Ragazzoni, M. Turatto, W. Gaessler
It has been noted (Lieu & Hillmann, 2002) that the cumulative affect of Planck-scale phenomenology, or the structure of space-time at extremely small scales, can be lead to the los…
3-D ionization structure (in stereoscopic view) of Planetary Nebulae: the case of NGC 1501
R. Ragazzoni, E. Cappellaro, S. Benetti +2
Long-slit echellograms of the high excitation planetary nebula NGC1501, reduced according to the methodology developed by Sabbadin et al. (2000a, b), allowed us to obtain the ``tru…
SOXS: a wide band spectrograph to follow up transients
P. Schipani, S. Campana, R. Claudi +49
SOXS (Son Of X-Shooter) will be a spectrograph for the ESO NTT telescope capable to cover the optical and NIR bands, based on the heritage of the X-Shooter at the ESO-VLT. SOXS wil…
The carbon-rich type Ic SN 2007gr: the photospheric phase
S. Valenti, N. Elias-Rosa, S. Taubenberger +20
The first two months of spectroscopic and photometric monitoring of the nearby type Ic SN 2007gr are presented. The very early discovery (less than 5 days after the explosion) and…
SNIa light curves and radioactive decay
E. Cappellaro, P. A. Mazzali, S. Benetti +4
The absolute V light curves of 5 SNe Ia, selected to represent the known range of absolute luminosities at maximum for this class of objects, are presented. Comparison of the long…
The early spectral evolution of SN 2004dt
G. Altavilla, M. Stehle, P. Ruiz-Lapuente +18
Aims. We study the optical spectroscopic properties of Type Ia Supernova (SN Ia) 2004dt, focusing our attention on the early epochs. Methods. Observation triggered soon after the S…
The Integral Field Spectrograph of SPHERE: the Planet Finder for VLT
R. U. Claudi, M. Turatto, J. Antichi +14
SPHERE is an instrument designed and built by a consortium of French, German, Italian, Swiss and Dutch institutes in collaboration with ESO. The project is currently in its Phase B…
The diversity of Type Ia Supernovae: evidence for systematics?
S. Benetti, E. Cappellaro, P. A. Mazzali +8
The photometric and spectroscopic properties of 26 well observed Type Ia Supernovae (SNeIa) were analyzed with the aim to explore SNIa diversity. The sample includes (Branch-)norma…
The Acquisition Camera System for SOXS at NTT
A. Brucalassi, A. Araiza-Duran, G. Pignata +47
SOXS (Son of X-Shooter) will be the new medium resolution (R4500 for a 1 arcsec slit), high-efficiency, wide band spectrograph for the ESO-NTT telescope on La Silla. It will…
The Type IIP SN 2007od in UGC 12846: from a bright maximum to dust formation in the nebular phase
C. Inserra, M. Turatto, A. Pastorello +12
Ultraviolet (UV), optical and near infrared (NIR) observations of the type IIP supernova (SN) 2007od are presented, covering from the maximum light to the late phase, allowing to i…