Publications (28)
Constraints on the progenitor system and the environs of SN 2014J from deep radio observations
M. A. Perez-Torres, P. Lundqvist, R. Beswick +11
We report deep EVN and eMERLIN observations of the Type Ia SN 2014J in the nearby galaxy M 82. Our observations represent, together with JVLA observations of SNe 2011fe and 2014J,…
SN 2005at - A neglected type Ic supernova at 10 Mpc
E. Kankare, M. Fraser, S. Ryder +7
We present a photometric and spectroscopic study of a reddened type Ic supernova (SN) 2005at. We report our results based on the available data of SN 2005at, including late-time ob…
WALLABY -- An SKA Pathfinder HI Survey
B. S. Koribalski, L. Staveley-Smith, T. Westmeier +67
The Widefield ASKAP L-band Legacy All-sky Blind surveY (WALLABY) is a next-generation survey of neutral hydrogen (HI) in the Local Universe. It uses the widefield, high-resolution…
Radio Supernovae: Circum-Stellar Investigation (C.S.I.) of Supernova Progenitor Stars
Christopher J. Stockdale, Kurt W. Weiler, Nino Panagia +8
Prior to explosion, a supernova progenitor slowly loses significant amounts of its hydrogen envelope in a stellar wind. After the explosion, the blastwave interacts with this wind…
Radio Detection of Supernova 2004ip in the Circumnuclear Region of the Luminous Infrared Galaxy IRAS 18293-3413
M. A. Pérez-Torres, S. Mattila, A. Alberdi +6
We report a radio detection of supernova SN 2004ip in the circumnuclear region of the luminous infrared galaxy IRAS 18293-3413, using Very Large Array (VLA) observations at 8.4 GHz…
Core-collapse supernovae missed by optical surveys
S. Mattila, T. Dahlen, A. Efstathiou +7
We estimate the fraction of core-collapse supernovae (CCSNe) that remain undetected by optical SN searches due to obscuration by large amounts of dust in their host galaxies. This…
Adaptive Optics Discovery of Supernova 2004ip in the Nuclear Regions of the Luminous Infrared Galaxy IRAS 18293-3413
S. Mattila, P. Vaisanen, D. Farrah +9
We report a supernova discovery in Ks-band images from the NAOS CONICA adaptive optics (AO) system on the ESO Very Large Telescope (VLT). The images were obtained as part of a near…
Adaptive optics imaging and optical spectroscopy of a multiple merger in a luminous infrared galaxy
P. Vaisanen, S. Mattila, A. Kniazev +16
(abridged) We present near-infrared (NIR) adaptive optics imaging obtained with VLT/NACO and optical spectroscopy from the Southern African Large Telescope (SALT) of a luminous inf…
Discovery of Two Supernovae in the Nuclear Regions of the Luminous Infrared Galaxy IC 883
E. Kankare, S. Mattila, S. Ryder +10
We report the discovery of two consecutive supernovae (SNe), 2010cu and 2011hi, located at 0.37" (180 pc) and 0.79" (380 pc) projected distance respectively from the centre of the…
The nature of supernovae 2010O and 2010P in Arp 299 - I. Near-infrared and optical evolution
E. Kankare, S. Mattila, S. Ryder +10
We present near-infrared and optical photometry, plus optical spectroscopy of two stripped-envelope supernovae (SNe) 2010O and 2010P that exploded in two different components of an…
Super Star Clusters in Luminous Infrared Galaxies: the SUNBIRD Survey
P. Vaisanen, Z. Randriamanakoto, A. Escala +7
We present recent results from an adaptive optics imaging survey of 40 Luminous IR Galaxies (LIRGs) searching for obscured core collapse supernovae and studying the galaxies themse…
A dust-enshrouded tidal disruption event with a resolved radio jet in a galaxy merger
S. Mattila, M. Pérez-Torres, A. Efstathiou +33
Tidal disruption events (TDEs) are transient flares produced when a star is ripped apart by the gravitational field of a supermassive black hole (SMBH). We have observed a transien…
Predicting the Presence of Companions for Stripped-Envelope Supernovae: The Case of the Broad-Lined Type Ic SN 2002ap
E. Zapartas, S. E. de Mink, S. D. Van Dyk +10
Many young, massive stars are found in close binaries. Using population synthesis simulations we predict the likelihood of a companion star being present when these massive stars e…
The circumnuclear environment of NGC613: a nuclear starburst caught in the act?
J. Falcón-Barroso, C. Ramos Almeida, T. Böker +4
We present near-infrared (- and -band) integral-field observations of the inner 700pc of the active spiral galaxy NGC613, obtained with SINFONI on the Very Large Telesc…
Discovery of a very highly extinguished supernova in a luminous infrared galaxy
E. Kankare, S. Mattila, S. Ryder +9
We report the discovery of a confirmed supernova (SN) and a supernova-candidate in near-infrared images from the ALTAIR/NIRI adaptive optics system on the Gemini-North Telescope an…
The 1000 Brightest HIPASS Galaxies: HI Properties
B. S. Koribalski, L. Staveley-Smith, V. A. Kilborn +5
(abridged) We present the HIPASS Bright Galaxy Catalog (BGC) which contains the 1000 HI-brightest galaxies in the southern sky as obtained from the HI Parkes All-Sky Survey (HIPASS…
First results from GeMS/GSAOI for project SUNBIRD: Supernovae UNmasked By Infra-Red Detection
E. C. Kool, S. Ryder, E. Kankare +13
Core collapse supernova (CCSN) rates suffer from large uncertainties as many CCSNe exploding in regions of bright background emission and significant dust extinction remain unobser…
Optical and near-infrared photometry of 94 type II supernovae from the Carnegie Supernova Project
J. P. Anderson, C. Contreras, M. D. Stritzinger +43
Type II supernovae (SNeII) mark the endpoint in the lives of hydrogen-rich massive stars. Their large explosion energies and luminosities allow us to measure distances, metalliciti…
Energetic nuclear transients in luminous and ultraluminous infrared galaxies
T. M. Reynolds, S. Mattila, E. Kankare +5
Energetic nuclear outbursts have been discovered in luminous and ultraluminous infrared galaxies (U/LIRGs) at unexpectedly high rates. To investigate this population of transients,…
AT 2017gbl: a dust obscured TDE candidate in a luminous infrared galaxy
E. C. Kool, T. M. Reynolds, S. Mattila +26
We present the discovery with Keck of the extremely infrared (IR) luminous transient AT 2017gbl, coincident with the Northern nucleus of the luminous infrared galaxy (LIRG) IRAS 23…
Core-collapse and Type Ia supernovae with the SKA
M. A. Pérez-Torres, A. Alberdi, R. J. Beswick +10
Core-collapse SNe (CCSNe): Systematic searches of radio emission from CCSNe are still lacking, and only targeted searches of radio emission from just some of the optically discover…
SN 2007it on the RISE -- a radio detection of an interacting supernova 18 years post-explosion
F. Acero, R. Z. E. Alsaberi, M. Arias +17
We report the first detection of radio emission from the Type II supernova SN 2007it, located at a distance of 12.2 Mpc in NGC 5530. The observations were obtained with the Austral…
A SINFONI view of Galaxy Centers: Morphology and Kinematics of five Nuclear Star Formation Rings
T. Böker, J. Falcón-Barroso, E. Schinnerer +2
We present near-infrared (H- and K-band) integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. The data, obtained at the Very Large…
A SINFONI view of circum-nuclear star-forming rings in spiral galaxies
J. Falcón-Barroso, T. Boeker, E. Schinnerer +2
We present near-infrared (H- and K-band) SINFONI integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. We made use of the relative i…
The origin of the ionization of the diffuse interstellar medium in spiral galaxies. II. Modelling the distribution of ionizing radiation in NGC 157
A. Zurita, J. E. Beckman, M. Rozas +1
In this paper we make a quantitative study of the hypothesis that the diffuse H-alpha emitted from the discs of spiral galaxies owes its origin to the ionizing photons escaping fro…
The Radio Luminosity-Risetime Function of Core-Collapse Supernovae
Michael F. Bietenholz, N. Bartel, M. Argo +3
We assemble a large set of 2-10 GHz radio flux density measurements and upper limits of 294 different supernovae (SNe), from the literature and our own and archival data. Only 31%…
Magnetic fields in barred galaxies III: The southern peculiar galaxy NGC 2442
J. Harnett, M. Ehle, A. Fletcher +5
Observations of the southern peculiar galaxy NGC 2442 with the Australia Telescope Compact Array in total and linearly polarized radio continuum at 6cm are presented and compared w…
BATSE Gamma-Ray Burst Line Search: IV. Line Candidates from the Visual Search
D. L. Band, S. Ryder, L. A. Ford +7
We evaluate the significance of the line candidates identified by a visual search of burst spectra from BATSE's Spectroscopy Detectors. None of the candidates satisfy our detection…