Results 61 to 70 of about 185,159 (346)

Stellar Motions in the Polar Ring Galaxy NGC 4650A

, 2003
We present the first measurement of the stellar kinematics in the polar ring of NGC 4650A. There is well defined rotation, with the stars and gas rotating in the same direction, and with similar amplitude.
Combes F., Rob A. Swaters, Vera C. Rubin
core   +1 more source

The Stellar Kinematics of Extragalactic Bulges [PDF]

, 2016
Invited Review to appear in "Galactic Bulges" Editors: Laurikainen E., Peletier R., Gadotti D. Springer Publishing.
openaire   +3 more sources

Distance to the Brick cloud using stellar kinematics

Astronomy & Astrophysics, 2022
Context.The central molecular zone at the Galactic center is currently being studied intensively to understand how star formation proceeds under the extreme conditions of a galactic nucleus. Knowing the position of molecular clouds along the line of sight toward the Galactic center has had important implications in our understanding of the physics of ...
Á. Martínez-Arranz, R. Schödel, F. Nogueras-Lara, B. Shahzamanian   +3 more
openaire   +3 more sources

A localized kinematic structure detected in atomic carbon emission spatially coincident with a proposed protoplanet in the HD 163296 disk [PDF]

, 2022
Over the last five years, studies of the kinematics in protoplanetary disks have led to the discovery of new protoplanet candidates and several structures linked to possible planet-disk interactions. We detect a localized kinematic bipolar structure in the HD 163296 disk present inside the deepest dust gap at 48 au from atomic carbon line emission.
arxiv   +1 more source

An Axisymmetric Distribution Function for the Galactic Bulge [PDF]

, 1994
We describe a method for parameterizing two-integral distribution functions, based on triangular tesselations of the integral plane. We apply the method to the axisymmetric isotropic rotator model for the Galactic bulge of Kent~(1992), and compare the ...
Kuijken, Konrad
core   +3 more sources

KINEMATIC DISCOVERY OF A STELLAR STREAM LOCATED IN PISCES [PDF]

The Astrophysical Journal, 2013
We report the kinematic discovery of the Pisces Stellar Stream (PSS), at Galactic longitude of roughly l=135 degrees and longitude between -39 < b < -36 deg. We originally identified this halo substructure from velocities of red giant branch stars in Sloan Digital Sky Survey (SDSS) Data Release 8, and confirmed its presence in turnoff stars from ...
Martin, Charles, Carlin, Jeffrey L., Newberg, Heidi Jo, Grillmair, Carl J.   +3 more
openaire   +6 more sources

IFU spectroscopy of 10 early-type galactic nuclei - IV. Properties of the circumnuclear stellar kinematics [PDF]

, 2016
The study of stellar kinematic properties may provide hints on the formation and evolution of elliptical and lenticular galaxies. Although most previous studies have focused on the large scale of these galaxies, their central regions (scales of $\sim$ 100 pc) may contain important clues about their structure, such as kinematically decoupled cores. This
arxiv   +1 more source

The black hole in IC 1459 from HST observations of the ionized gas disk

, 2000
The peculiar elliptical galaxy IC 1459 (M_V = -21.19, D = 16.5 Mpc) has a fast counterrotating stellar core, stellar shells and ripples, a blue nuclear point source and strong radio core emission.
Binney J., C. Marcella Carollo, de Bruijne J. H. J., Drinkwater M. J., Genzel R., Gijs A. Verdoes Kleijn, Goudfrooij P., Goudfrooij P., Heckman T. M., Kormendy J., P. Tim de Zeeuw, Roeland P. van der Marel, Sadler E. M., Simpson C., Simpson C., Slee O. B., van der Marel R. P., van der Marel R. P., van der Marel R. P., Whittle M.   +19 more
core   +1 more source

KINEMATICS OF CLASSICAL CEPHEIDS IN THE NUCLEAR STELLAR DISK [PDF]

The Astrophysical Journal, 2015
Classical Cepheids are useful tracers of the Galactic young stellar population because their distances and ages can be determined from their period-luminosity and period-age relations. In addition, the radial velocities and chemical abundance of the Cepheids can be derived from spectroscopic observations, providing further insights into the structure ...
Shogo Nishiyama, Yuji Ikeda, Giuseppe Bono, Michiko S. Fujii, Satoshi Hamano, Junichi Baba, Noriyuki Matsunaga, Naoto Kobayashi, Wako Aoki, Takuji Tsujimoto, K. Genovali, Sohei Kondo, Tetsuya Nagata, Ryo Yamamoto, Laura Inno, Laura Inno, Kei Fukue   +16 more
openaire   +6 more sources

From Damage to Functionality: Remanufacturing of Thrust Roller Bearings by Tailored Forming

Advanced Engineering Materials, EarlyView.
Herein, the wear and fatigue behavior of repaired bearing raceways with a new powder alloy is investigated using a FE8 test‐rig and an oscillating tribometer. The tests are compared with industrial manufactured bearings to evaluate the repair quality. The repair can extend the service life of the repaired bearing to that of a new bearing and improves ...
Felix Saure, Florian Pape, Gerhard Poll, Max Marian   +3 more
wiley   +1 more source