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We report on the discovery of a rapidly co-rotating stellar and gas component in the nucleus of the shell elliptical NGC2865. The stellar component extends ~ 0.51/h100 kpc along the major axis, and shows depressed velocity dispersion and…

天体物理学 · 物理学 2009-10-31 G. K. T. Hau , D. Carter , M. Balcells

It is important to understand the interplay between nuclear star-formation and nuclear activity when studying the evolution of gas rich galaxy mergers. We present here new spatially resolved L-band integral field unit observations of the…

宇宙学与河外天体物理 · 物理学 2011-11-14 Petri Vaisanen , Vinesh Rajpaul , Albert A. Zijlstra , Juha Reunanen , Jari Kotilainen

(abridged)We present the observations of the pair of interacting galaxies NGC6285/86 carried out with the 6m SAO RAS telescope by using 1D and 2D spectroscopy. The observations of NGC6286 with a long-slit spectrograph (UAGS) near the…

天体物理学 · 物理学 2009-11-10 L. V. Shalyapina , A. V. Moiseev , V. A. Yakovleva , V. A. Hagen-Thorn , A. N. Burenkov

We present a novel fully Bayesian analysis to constrain short gamma-ray burst jet structures associated with cocoon, wide-angle and simple top-hat jet models, as well as the binary neutron star merger rate. These constraints are made given…

高能天体物理现象 · 物理学 2023-05-12 Fergus Hayes , Ik Siong Heng , Gavin Lamb , En-Tzu Lin , John Veitch , Michael J. Williams

We present optical broad band B-I colour maps of a further sample of 10 Seyfert 2 galaxies. In these bands, the contribution from emission lines to the total flux is small, and hence the images predominantly trace the continuum…

天体物理学 · 物理学 2009-10-30 J. K. Kotilainen

We investigate non-thermal electron and nuclei energy losses within the binary neutron star merger remnant produced by the event GW170817. The lack of a cooling feature within the detected synchrotron emission from the source is used to…

高能天体物理现象 · 物理学 2018-11-06 Xavier Rodrigues , Daniel Biehl , Denise Boncioli , Andrew M. Taylor

We present the first results of an analysis of the properties of the molecular gas in the nuclear regions (r < 300 pc) of a sample of six nearby galaxies, based on new high spatial resolution observations obtained in the K-band with the…

宇宙学与河外天体物理 · 物理学 2015-06-11 X. Mazzalay , R. P. Saglia , Peter Erwin , M. H. Fabricius , S. P. Rusli , J. Thomas , R. Bender , M. Opitsch , N. Nowak , Michael J. Williams

We are presenting new results on kinematics and structure of the Mrk 334 Seyfert galaxy. Panoramic (3D) spectroscopy is performed at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences using the…

宇宙学与河外天体物理 · 物理学 2015-05-14 A. A. Smirnova , A. V. Moiseev

We have mapped the stellar and gaseous kinematics, as well as the emission-line flux distributions and ratios, from the inner 450pc radius of Mrk1157, using 2D near-IR spectra obtained with the Gemini NIFS at a spatial resolution of 35pc.…

宇宙学与河外天体物理 · 物理学 2015-05-28 Rogemar A. Riffel , Thaisa Storchi-Bergmann

Accretion disks formed in binary neutron star mergers play a central role in many astrophysical processes of interest, including the launching of relativistic jets or the ejection of neutron-rich matter hosting heavy element…

高能天体物理现象 · 物理学 2024-03-19 Alessandro Camilletti , Albino Perego , Federico Maria Guercilena , Sebastiano Bernuzzi , David Radice

We present CO(1-0) and CO(2-1) maps of the LINER galaxy NGC7217, obtained with the IRAM interferometer, at 2.4"x1.9" and 1.2"x0.8" resolution respectively. The nuclear ring (at r=12"=0.8kpc) dominates the CO maps, and has a remarkable sharp…

A multi-line millimeter-wave study of the nearby starburst galaxy NGC 4945 has been carried out using the Swedish-ESO Submillimeter Telescope (SEST). The study covers the frequency range from 82 GHz to 354 GHz and includes 80 transitions of…

天体物理学 · 物理学 2009-11-10 M. Wang , C. Henkel , Y. -N. Chin , J. Whiteoak , M. Cunningham , R. Mauersberger , D. Muders

Measuring the merger rate density history of binary neutron stars (BNS) can greatly aid in understanding the history of heavy element formation in the Universe. Currently, second-generation Gravitational Wave (GW) detectors can only measure…

高能天体物理现象 · 物理学 2025-07-08 Yun-Fei Du , Emre Seyit Yorgancioglu , Shu-Xu Yi , Tian-Yong Cao , Shuang-Nan Zhang

We present an imaging survey of the CO(1--0), HCN(1--0), and HCO$^+$(1--0) lines in the nearby Seyfert galaxies using the Nobeyama Millimeter Array and RAINBOW Interferometer. Some of the observed Seyfert galaxies including NGC 1068, NGC…

天体物理学 · 物理学 2009-11-13 K. Kohno

We present a new high-resolution N-body/SPH simulation of an encounter of two gas-rich disk galaxies which closely matches the morphology and kinematics of the interacting Antennae galaxies (NGC 4038/39). The simulation includes radiative…

宇宙学与河外天体物理 · 物理学 2015-05-18 Simon J. Karl , Thorsten Naab , Peter H. Johansson , Hanna Kotarba , Christian M. Boily , Florent Renaud , Christian Theis

We present first results of near infrared J and H+K ESO-SINFONI integral field spectroscopy of the composite starburst/Seyfert 1.8 galaxy Mrk 609. The data were taken during the science verification period of SINFONI. We aim to investigate…

天体物理学 · 物理学 2007-05-23 J. Zuther , C. Iserlohe , J. -U. Pott , T. Bertram , S. Fischer , W. Voges , G. Hasinger , A. Eckart

We present hydrodynamic simulations of a major merger of disk galaxies, and study the ISM dynamics and star formation properties. High spatial and mass resolutions of 12pc and 4x10^4 M_sol allow to resolve cold and turbulent gas clouds…

宇宙学与河外天体物理 · 物理学 2015-05-19 Romain Teyssier , Damien Chapon , Frederic Bournaud

NGC 4314 is an early-type barred galaxy containing a nuclear ring of recent star formation. We present CO(1-0) interferometer data of the bar and circumnuclear region with 2.3 x 2.2 arcsec spatial resolution and 13 km/s velocity resolution…

天体物理学 · 物理学 2009-10-28 G. Fritz Benedict , Beverly J. Smith , Jeffrey D. P. Kenney

We present high angular resolution (0.5-2.0") observations of the mm continuum and the 12CO(J=3-2), 13CO(J=3-2), 13CO(J=2-1), C18O(J=2-1), HCN(J=3-2), HCO+(J=4-3) and HCO+(J=3-2) line emission in the circumnuclear disk (r=100pc) of the…

We performed H-alpha imaging observations of 22 luminous infrared galaxies to investigate how the distribution of star-forming regions in these galaxies is related to galaxy interactions. Based on correlation diagrams between H-alpha flux…

天体物理学 · 物理学 2009-11-10 T. Hattori , M. Yoshida , H. Ohtani , H. Sugai , T. Ishigaki , M. Sasaki , T. Hayashi , S. Ozaki , M. Ishii , A. Kawai