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We present a unified rotation curve of the Galaxy re-constructed from the existing data by re-calculating the distances and velocities for a set of galactic constants R_0=8 kpc and V_0=200 km/s. We decompose it into a bulge with de…

天体物理学 · 物理学 2015-05-13 Y. Sofue , M. Honma , T. Omodaka

We study the kinematics of the dense gas of starless and protostellar cores traced by the N2D+(2-1), N2H+(1-0), DCO+(2-1), and H13CO+(1-0) transitions along the L1495 filament and the kinematic links between the cores and the surrounding…

星系天体物理 · 物理学 2018-09-12 A. Punanova , P. Caselli , J. E. Pineda , A. Pon , M. Tafalla , A. Hacar , L. Bizzocchi

We present in this paper a detailed study of the kinematical properties of the ionized gas around the young massive star clusters in the nucleus of NGC 4214. The analysis is based on bidimensional spectroscopical data, allowing to derive…

天体物理学 · 物理学 2007-05-23 J. Maiz-Apellaniz , C. Munoz-Tunon , G. Tenorio-Tagle , J. M. Mas-Hesse

We present a detailed analysis of the kinematics of the Galactic globular cluster NGC 6397 based on more than ~18,000 spectra obtained with the novel integral field spectrograph MUSE. While NGC 6397 is often considered a core collapse…

We use new HST observations coupled with archival data spanning a total temporal baseline of 17 years to study the internal kinematics of the multiple populations in the globular cluster NGC 2808 from its center out to ~8 half-light radii…

The Andromeda galaxy (M31) is the most nearby giant spiral galaxy, an opportunity to study with high resolution dynamical phenomena occurring in nuclear disks and bulges, able to explain star formation quenching, and galaxy evolution…

星系天体物理 · 物理学 2025-05-29 Lucie Cros , Françoise Combes , Anne-Laure Melchior , Thomas Martin

NGC7217 is an unbarred early-type spiral galaxy having a multi-segment exponential light profile and a system of starforming rings of the unknown origin; it also possesses a circumnuclear gaseous polar disc. We analysed new long slit…

宇宙学与河外天体物理 · 物理学 2015-05-27 Olga Sil'chenko , Igor Chilingarian , Natalia Sotnikova , Victor Afanasiev

We present CS(7-6) line maps toward the central parsec of the Galactic Center (GC), conducted with the Atacama Large Millimeter/submillimeter Array (ALMA). The primary goal is to find and characterize the gas structure in the inner cavity…

星系天体物理 · 物理学 2020-01-08 Pei-Ying Hsieh , Patrick M. Koch , Woong-Tae Kim , Paul T. P. Ho , Hsi-Wei Yen , Nanase Harada , Ya-Wen Tang

This Letter presents a study of the geometry and motion of the Galactic disk using open clusters in the Gaia era. The findings suggest that the inclination of the Galactic disk increases gradually from the inner to the outer disk, with a…

星系天体物理 · 物理学 2023-08-31 Zhihong He

We investigate the kinematics of neutral gas in the Small Magellanic Cloud (SMC) and test the hypothesis that it is rotating in a disk. To trace the 3D motions of the neutral gas distribution, we identify a sample of young, massive stars…

We study two dimensional Fabry-Perot interferometric observations of the nearby face-on late-type spiral galaxy, NGC 628, in order to analyse the ionized gas component of the interstellar medium. Covering the galaxy out to a radius larger…

We present a spectro-photometric survey of 2522 extragalactic globular clusters (GCs) around twelve early-type galaxies, nine of which have not been published previously. Combining space-based and multi-colour wide field ground-based…

The edge-on, nearby spiral galaxy NGC5907 has long been used as the prototype of a ``non-interacting'' warped galaxy. We report here the discovery of two interactions with companion dwarf galaxies that substantially change this picture.…

The characteristics of the inner Galaxy remain obscured by significant dust extinction, and hence infrared surveys are useful to find young Cepheids whose distances and ages can be accurately determined. A near-infrared photometric and…

星系天体物理 · 物理学 2017-06-28 Satoshi Tanioka , Noriyuki Matsunaga , Kei Fukue , Laura Inno , Giuseppe Bono , Naoto Kobayashi

The Milky Way spiral arms are well established from star counts as well as from the locus of molecular clouds and other young objects, however, they have only recently started to be observed from a kinematics point of view. Using the…

星系天体物理 · 物理学 2022-03-15 Luis Martinez-Medina , Angeles Pérez-Villegas , Antonio Peimbert

We present fully sampled high angular resolution two-dimensional kinematics in the H alpha spectral line, optical and near-infrared imaging, as well as 21 cm atomic hydrogen data of the spiral galaxy NGC 278. This is a small non-barred…

天体物理学 · 物理学 2009-11-10 J. H. Knapen , L. F. Whyte , W. J. G. de Blok , J. M. van der Hulst

We have measured the stellar kinematic profiles of NGC 3379 along four position angles using the MMT. The data extend 90" from the center, at essentially seeing-limited resolution out to 17". The mean velocities and dispersions have total…

天体物理学 · 物理学 2009-10-31 Thomas S. Statler , Tammy Smecker-Hane

In this third paper of a series, we study the kinematics of the ionised gas and stars, calculating the dynamical masses of the circumnuclear star-forming regions in the ring of of the face-on spiral NGC 7742. We have used high spectral…

星系天体物理 · 物理学 2025-04-02 S. Zamora , A. I. Díaz , Roberto Terlevich , Elena Terlevich , R. Amorín

In this work, we continue the study of the central region of NGC 613 by da Silva et al. (2020), by analysing the stellar and gas kinematics and the stellar archaeology in optical and near-infrared data cubes. The high spatial resolution of…

星系天体物理 · 物理学 2020-06-18 Patrícia da Silva , R. B. Menezes , J. E. Steiner

The stellar populations in the inner kiloparsecs of the Milky Way (MW) show complex kinematical and chemical structures. The origin and evolution of these structures is still under debate. Here we study the central region of a fully…

星系天体物理 · 物理学 2019-04-03 Tobias Buck , Melissa Ness , Aura Obreja , Andrea V. Macciò , Aaron A. Dutton