Results 11 to 20 of about 729 (198)

Kinematics and dynamics of Gaia red clump stars [PDF]

Astronomy & Astrophysics, 2020
In this study, we analyse the kinematics and dynamics of a homogeneous sample of red clump stars, selected from the second Gaia data release catalogue in the direction of the Galactic poles, at five different positions in the plane. The level of completeness of the sample at heights between 0.6 and 3.5 kpc was asserted through a comparison with the 2 ...
Salomon, Jean-Baptiste, Bienaymé, Olivier, Reylé, Céline, Robin, Annie C., Famaey, Benoit   +4 more
  +6 more sources

Galactic kinematics and dynamics from Radial Velocity Experiment stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2014
We analyse the kinematics of ˜400 000 stars that lie within ˜2 kpc of the Sun and have spectra measured in the Radial Velocity Experiment. We decompose the sample into hot and cold dwarfs, red-clump and non-clump giants. The kinematics of the clump giants are consistent with being identical with those of the giants as a whole.
Binney, J., Burnett, B., Kordopatis, G., Steinmetz, M., Gilmore, G., Bienayme, Olivier, Bland-Hawthorn, J., Famaey, Benoit, Grebel, E. K., Helmi, A., Navarro, J., Parker, Q., Reid, W. A., Seabroke, G., Siebert, Arnaud, Watson, F., Williams, M. E. K., Wyse, R. F. G., Zwitter, T.   +18 more
openaire   +6 more sources

The SAMI Galaxy Survey: Kinematics of Stars and Gas in Brightest Group Galaxies—The Role of Group Dynamics [PDF]

The Astrophysical Journal, 2021
Abstract We study the stellar and gas kinematics of the brightest group galaxies (BGGs) in dynamically relaxed and unrelaxed galaxy groups for a sample of 154 galaxies in the SAMI galaxy survey. We characterize the dynamical state of the groups using the luminosity gap between the two most luminous galaxies and the BGG offset from the ...
Mojtaba Raouf, Rory Smith, Habib G. Khosroshahi, Jesse van de Sande, Julia J. Bryant, Luca Cortese, S. Brough, Scott M. Croom, Ho Seong Hwang, Simon Driver, Ángel R. López-Sánchez, Jongwan Ko, Jae-Woo Kim, Jihye Shin, Nicholas Scott, Joss Bland-Hawthorn, Samuel N. Richards, Matt Owers, J. S. Lawrence, Iraklis S. Konstantopoulos   +19 more
openaire   +2 more sources

Kinematics and Dynamics of Multiphase Outflows in Simulations of the Star-forming Galactic Interstellar Medium [PDF]

The Astrophysical Journal, 2020
Abstract Galactic outflows produced by stellar feedback are known to be multiphase in nature. Observations and simulations indicate that the material within several kiloparsecs of galactic disk midplanes consists of warm clouds embedded within a hot wind.
Aditi Vijayan, Chang-Goo Kim, Lucia Armillotta, Eve C. Ostriker, Miao Li   +4 more
openaire   +2 more sources

New Understanding of Large Magellanic Cloud Structure, Dynamics, and Orbit from Carbon Star Kinematics [PDF]

The Astronomical Journal, 2002
57 pages, LaTeX, with 11 PostScript figures.
van der Marel, Roeland P., Alves, David R., Hardy, Eduardo, Suntzeff, Nicholas B.   +3 more
openaire   +2 more sources

Probing the Galactic halo with RR Lyrae stars – V. Chemistry, kinematics, and dynamically tagged groups

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We employ a sample of 135 873 RR Lyrae stars (RRLs) with precise photometric-metallicity and distance estimates from the newly calibrated P–ϕ31–R21–[Fe/H] and Gaia G band P–R21–[Fe/H] absolute magnitude–metallicity relations of Li et al., combined with available proper motions from Gaia EDR3, and 6955 systemic radial velocities ...
Jonathan Cabrera Garcia, Timothy C Beers, Yang Huang, Xin-Yi Li, Gaochao Liu, Huawei Zhang, Jihye Hong, Young Sun Lee, Derek Shank, Dmitrii Gudin, Yutaka Hirai, Dante Komater   +11 more
openaire   +2 more sources

Large scale kinematics and dynamical modelling of the Milky Way nuclear star cluster [PDF]

Astronomy & Astrophysics, 2014
Within the central 10pc of our Galaxy lies a dense nuclear star cluster (NSC), and similar NSCs are found in most nearby galaxies. Studying the structure and kinematics of NSCs reveals the history of mass accretion of galaxy nuclei. Because the Milky Way (MW) NSC is at a distance of only 8kpc, we can spatially resolve the MWNSC on sub-pc scales.
Feldmeier, A., Neumayer, N., Seth, A., Schödel, R., Lützgendorf, N., Zeeuw, P.T. de, Kissler-Patig, M., Nishiyama, S., Walcher, C.   +8 more
openaire   +4 more sources

The kinematics of star clusters undergoing gas expulsion in Newtonian and Milgromian dynamics [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
15 pages, 7 figures, accepted for publication in ...
Xufen Wu, Pavel Kroupa
openaire   +2 more sources

Kinematics and Dynamics of OH/IR Stars [PDF]

Symposium - International Astronomical Union, 1993
The available kinematical data on OH/IR stars is discussed, and dynamical models for the OH/IR stars are presented.
openaire   +1 more source

CO Kinematics, Star Formation and Dynamical Evolution of the Lensed Starburst NGC 4102 [PDF]

International Astronomical Union Colloquium, 1996
The circumnuclear (inner kiloparsec) regions of spiral galaxies are time-dependent systems whose morphology and dynamics can change significantly over less than a Hubble time. To develop an insight into this evolution it is important to study the fate of gas driven towards the central parts of a galaxy especially near the dynamical resonances.
Shardha Jogee, Jeffrey D. P. Kenney
openaire   +1 more source