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Querying the Spitzer archive for optically-selected active galactic nuclei (AGN) observed in high-resolution mode spectroscopy, we identified radio and/or interacting galaxies with highly turbulent motions of the H2 gas at a temperature of…

宇宙学与河外天体物理 · 物理学 2011-10-19 K. M. Dasyra , F. Combes

We aim to map the distribution and kinematics of molecular and ionized gas in a sample of active galaxies, to quantify the nuclear inflows and outflows. Here, we analyze the nuclear kinematics of NGC 1566 via ALMA observations of the CO…

21cm spectral-line and continuum observations of ten compact planetary nebulae have been made with the Very Large Array. Circumnebular atomic hydrogen is identified in the planetary nebulae SwSt1, M3-35, and possibly in Hu2-1. The…

天体物理学 · 物理学 2015-06-24 G. T. Gussie , A. R. Taylor

Galactic winds are essential to regulation of star formation in galaxies. To study the distribution and dynamics of molecular gas in a wind, we imaged the nearby starburst galaxy NGC 1482 in CO ($J=1\rightarrow0$) at a resolution of 1''…

星系天体物理 · 物理学 2020-10-14 Dragan Salak , Naomasa Nakai , Kazuo Sorai , Yusuke Miyamoto

The Young Stellar Object (YSO) W33A is one of the best known examples of a massive star still in the process of forming. Here we present Gemini North ALTAIR/NIFS laser-guide star adaptive-optics assisted K-band integral-field spectroscopy…

太阳与恒星天体物理 · 物理学 2015-05-14 Ben Davies , Stuart L. Lumsden , Melvin G. Hoare , Rene D. Oudmaijer , Willem-Jan de Wit

With new THz maps that cover an area of ~3.3x2.1 pc^2 we probe the spatial distribution and association of the ionized, neutral and molecular gas components in the M17 SW nebula. We used the dual band receiver GREAT on board the SOFIA…

星系天体物理 · 物理学 2015-06-04 J. P. Perez-Beaupuits , H. Wiesemeyer , V. Ossenkopf , J. Stutzki , R. Guesten , R. Simon , H. -W. Huebers , O. Ricken

We present a new large-scale survey of J=3-2 12CO emission covering 4.8 square degrees around the Rosette Nebula. Approximately 2000 compact clumps are identified, with a spatially-invariant power law mass distribution index of -1.8. Most…

High-resolution HST imaging of the compact planetary nebula NGC 6644 has revealed two pairs of bipolar lobes and a central ring lying close to the plane of the sky. From mid-infrared imaging obtained with the Gemini Telescope, we have found…

太阳与恒星天体物理 · 物理学 2010-10-13 Chih-Hao Hsia , Sun Kwok , Yong Zhang , Nico Koning , Kevin Volk

We present a comprehensive analysis of the compact planetary nebula M2-31 investigating its spectral properties, spatio-kinematical structure and chemical composition using GTC MEGARA integral field spectroscopic observations and NOT ALFOSC…

太阳与恒星天体物理 · 物理学 2021-09-22 J. S. Rechy-García , J. A. Toalá , S. Cazzoli , M. A. Guerrero , L. Sabin , V. M. A. Gómez-González , G. Ramos-Larios

We have been able to compare with astrometric precision AstroDrizzle processed images of NGC 6720 (the Ring Nebula) made using two cameras on the Hubble Space Telescope. The time difference of the observations was 12.925 yrs. This large…

太阳与恒星天体物理 · 物理学 2015-06-15 C. R. O'Dell , G. J. Ferland , W. J. Henney , M. Peimbert

We investigate the fueling and the feedback of nuclear activity in the Seyfert 2 galaxy NGC1068, by studying the distribution and kinematics of molecular gas in the torus and its connections. We use ALMA to image the emission of a set of…

We report on spectro-imaging observations of the Herbig-Haro 2 outflow with the ISOCAM camera onboard the Infrared Space Observatory (ISO). The [Ne II}] 12.81 microns and [Ne III]15.55 microns lines are detected only towards the jet working…

天体物理学 · 物理学 2009-11-07 B. Lefloch , J. Cernicharo , S. Cabrit , A. Noriega-Crespo , A. Moro-Martin , D. Cesarsky

We present the discovery of a 4 kpc molecular gas lane in the Cygnus A host galaxy, using ALMA CO 2-1 observations. The gas lane is oriented roughly perpendicular to the projected radio jet axis. The CO emission generally follows the clumpy…

星系天体物理 · 物理学 2022-10-12 C. L. Carilli , R. A. Perley , D. A. Perley , V. Dhawan , R. Decarli , A. Evans , K. Nyland

Studying the atomic-to-molecular transition is essential for understanding the evolution of interstellar medium. The linear edge of Taurus molecular cloud, clearly identified in the $^{13}$CO(1-0) intensity map, serves as an ideal site for…

星系天体物理 · 物理学 2025-04-03 Ningyu Tang , Feihang Miao , Gan Luo , Di Li , Junzhi Wang , Fujun Du , Donghong Wu , Shu Liu

Context: IRAS 04166+2706 in Taurus is one of the most nearby young stellar objects whose molecular outflow contains a highly collimated fast component. Methods: We have observed the IRAS 04166+2706 outflow with the IRAM Plateau de Bure…

天体物理学 · 物理学 2009-11-13 J. Santiago-Garcia , M. Tafalla , D. Johnstone , R. Bachiller

We present Submillimeter Array observations of the young stellar object IRAS 04579+4703 in the 1.3 mm continuum and in the 12CO(2-1), 13CO(2-1) and C18O(2-1) lines. The 1.3 mm continuum image reveals a flattened structure with a mass of 13…

太阳与恒星天体物理 · 物理学 2015-06-04 Jin-Long Xu , Jun-Jie Wang , Sheng-Li Qin

High-resolution Hubble Space Telescope (HST) archive imaging and high-dispersion spectroscopy are used to study the complex morphological and kinematical structure of the planetary nebula, NGC 2818. We analyze narrow band H{\alpha}, [O…

太阳与恒星天体物理 · 物理学 2015-06-04 Roberto Vázquez

We analyze the carbon monoxide emission around the star WR 16 aiming to chieve a better understanding of the interaction between massive stars with their surroundings. We study the molecular gas in a region of 86.'4 x 86.'4 in size using CO…

太阳与恒星天体物理 · 物理学 2015-06-12 N. U. Duronea , E. M. Arnal , L. Bronfman

We performed the first VLBI observations of the SiO v=1 and v=2 J=1--0 masers in a Proto Planetary Nebula OH 231.8+4.2 (also known as the Rotten Egg nebula), at milliarcsecond resolution. Only the v=2 maser transition was detected. We…

天体物理学 · 物理学 2007-05-23 J. -F. Desmurs , C. Sanchez Contreras , V. Bujarrabal , F. Colomer , J. Alcolea

We have investigated tiny molecular clumps in the Rosette Nebula. Radio observations were made of molecular line emission from 16 globulettes identified in a previous optical survey. In addtion, we collected images in the NIR broad-band…

星系天体物理 · 物理学 2015-06-15 Gösta F. Gahm , Carina M. Persson , Minja M. Mäkelä , Lauri K. Haikala