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We present multifrequency radio continuum as well as HI observations of the superwind galaxy NGC1482, with both the GMRT and the VLA. This galaxy has a remarkable hourglass-shaped optical emission line outflow as well as bi-polar soft X-ray…

天体物理学 · 物理学 2009-11-10 Ananda Hota , D. J. Saikia

We present two-dimensional (2D) stellar and gaseous kinematics of the inner ~130x180 pc^2 of the Narrow Line Seyfert 1 galaxy NGC4051 at a sampling of 4.5 pc, from near-infrared K-band spectroscopic observations obtained with the Gemini's…

We present interferometric observations of CO J=1-0 emission in the central regions of the edge-on galaxy NGC 4631, known for its extended gaseous halo and its tidal interactions. Previous single-dish observations revealed that almost all…

天体物理学 · 物理学 2009-10-31 Richard J. Rand

We present upgraded Giant Metrewave Radio Telescope (uGMRT) observations of 0731+438, an \mbox{FR II} radio galaxy at a redshift of 2.429 with two lobes separated by 82 kpc. A blueshifted, faint and broad \mbox{H{\sc i}} 21 cm absorption…

We present UV to NIR spectroscopic observations of the quasar J0015+1842 and its proximate molecular absorber at z=2.631. The [OIII] emission line of the quasar is composed of a broad (FWHM~1600 km/s), spatially-unresolved component,…

星系天体物理 · 物理学 2021-02-17 P. Noterdaeme , S. Balashev , J. -K. Krogager , P. Laursen , R. Srianand , N. Gupta , P. Petitjean , J. P. U. Fynbo

We present the results of near-infrared (NIR) H- and K-band European Southern Observatory SINFONI integral field spectroscopy (IFS) of the Seyfert 2 galaxy NGC 1433. We present emission and absorption line measurements in the central kpc of…

We present wide-field Halpha images of the Galactic supernova remnant G156.2+5.7 which reveal the presence of considerable faint Halpha line emission coincident with the remnant's X-ray emission. The outermost Halpha emission consists…

天体物理学 · 物理学 2008-11-26 Christopher L. Gerardy , Robert A. Fesen

We report interferometric mapping of the bipolar pre-planetary nebula IRAS 08005-2356 with an angular-resolution of ~1"-5", using the Submillimeter Array (SMA), in the 12CO J=2-1, 3-2, 13CO J=2-1 and SiO J=5-4 (v=0) lines. Single-dish…

太阳与恒星天体物理 · 物理学 2015-09-16 R. Sahai , N. A. Patel

We present the discovery of a large-scale, limb-brightened outflow, extending at least 30 kpc above and below the star-forming disk of the edge-on galaxy ESO 130-G012 (D = 16.9 Mpc). Partially obscured by Galactic foreground stars and dust,…

We present neutral hydrogen observations of the nearby edge-on spiral galaxy NGC891 which show extended extra-planar emission up to distances of 15 kpc from the plane. 3D modeling of the galaxy shows that this emission comes from halo gas…

天体物理学 · 物理学 2007-05-23 Filippo Fraternali , Tom Oosterloo , Renzo Sancisi , Rob Swaters

The current paradigm for the AGN phenomenon is a central engine that consists of an inflow of material accreting in the form of a disk onto a supermassive black hole. Observations in the UV and optical find high velocity ionized material…

宇宙学与河外天体物理 · 物理学 2015-05-13 G. Chartas , J. Charlton , M. Eracleous , M. Giustini , P. Rodriguez Hidalgo , R. Ganguly , F. Hamann , T. Misawa , D. Tytler

We present new observations of the strongly-barred galaxy NGC 1365, including new photometric images and Fabry-Perot spectroscopy, as well as a detailed re-analysis of the neutral hydrogen observations from the VLA archive. We find the…

天体物理学 · 物理学 2009-11-13 R. Zanmar Sanchez , J. A. Sellwood , B. J. Weiner , T. B. Williams

We present interferometric observations in the 12CO (2-1) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG30, using the Submillimeter Array. The dust continuum images resolve two…

天体物理学 · 物理学 2009-11-13 Xuepeng Chen , Tyler L. Bourke , Ralf Launhardt , Thomas Henning

The Hawaii Imaging Fabry-Perot Interferometer (HIFI) on the University of Hawaii 2.2m telescope was used to map the Halpha and [O III] 5007 A emission-line profiles across the entire disk of the edge-on Sb galaxy NGC 4388. We confirm a rich…

天体物理学 · 物理学 2009-10-31 S. Veilleux , J. Bland-Hawthorn , G. Cecil , R. B. Tully , S. T. Miller

We present new FUSE spectroscopy of the dwarf starburst galaxy NGC 625. These observations probe multiple phases of the interstellar medium, including the coronal, ionized, neutral and molecular gas. This nearby (D = 3.9 +/- 0.2 Mpc) system…

天体物理学 · 物理学 2014-10-13 John M. Cannon , Evan D. Skillman , Kenneth R. Sembach , Dominik J. Bomans

We investigate the supernova-driven galactic wind of the barred spiral galaxy NGC 7552, using both ground-based optical nebular emission lines and far-ultraviolet absorption lines measured with the Hubble Space Telescope Cosmic Origins…

Spiral galaxies are thin and susceptible to being disrupted vertically. The largest star clusters, and nuclear starbursts, generate enough energy from winds and supernovae to send disk material to the halo. % METHODS Observations of edge-on…

星系天体物理 · 物理学 2025-04-10 William T. Reach , Dario Fadda , Richard J. Rand , Gordon J. Stacey

Narrow-Line Seyfert 1 (NLS1) Galaxies are an important type of active galactic nucleus (AGN), generally expected to be accreting at high Eddington rate. The properties of their outflows and importance of AGN feedback remain intriguing. We…

星系天体物理 · 物理学 2023-01-18 Xiao-Dan Fu , Junfeng Wang , Xiaoyu Xu , Zhi-Xiang Zhang

The object of this study is one of the most energetic and luminous molecular outflows known in the Galaxy, G331.512-0.103. Observations with ALMA Band 7 (350 GHz; 0.86 mm) reveal a very compact, extremely young bipolar outflow and a more…

Here we report the detection, in Halpha emission, of a radial corrugation in the velocity field of the spiral galaxy NGC 5427. The central velocity of the Halpha line displays coherent, wavy-like variations in the vicinity of the spiral…

天体物理学 · 物理学 2009-10-31 Emilio Alfaro , Enrique Perez , Rosa M. Gonzalez Delgado , Marcos Martos , Jose Franco