Results 31 to 40 of about 185,159 (346)

A Statistical Relation between Mass, Age, and Velocity Dispersion in the Solar Neighborhood

The Astrophysical Journal, 2023
The stellar kinematics of the Galactic disk are the main factors constraining disk formation and evolution processes in the Milky Way. In this paper, we investigate a statistical relation between stellar mass, age, and velocity dispersion for stars in ...
Hossein Fatheddin, Sedighe Sajadian
doaj   +1 more source

Spatially resolved gas and stellar kinematics in compact starburst galaxies [PDF]

A&A 666, A161 (2022), 2022
The kinematics of galaxies provide valuable insights in their physics and assembly history. Kinematics are governed not only by the gravitational potential, but also by merger events and stellar feedback processes such as stellar winds and supernova explosions. Aims.
arxiv   +1 more source

Discovery of the Magellanic Stellar Stream Out to 100 kpc

The Astrophysical Journal, 2023
The Magellanic Stream (MS)—an enormous ribbon of gas spanning 140° of the southern sky trailing the Magellanic Clouds—has been exquisitely mapped in the five decades since its discovery.
Vedant Chandra, Rohan P. Naidu, Charlie Conroy, Ana Bonaca, Dennis Zaritsky, Phillip A. Cargile, Nelson Caldwell, Benjamin D. Johnson, Jiwon Jesse Han, Yuan-Sen Ting   +9 more
doaj   +1 more source

Investigation of the Stellar Population of Several Polar Ring Galaxies

Galaxies, 2016
We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina, Gulnara Karataeva, Olga Merkulova, Valeriya Yakovleva, Nina Yablokova   +4 more
doaj   +1 more source

SPar: Estimating Stellar Parameters from Multiband Photometries with Empirical Stellar Libraries

The Astronomical Journal, 2023
Modern large-scale photometric surveys have provided us with multiband photometries of billions of stars. Determining the stellar atmospheric parameters, such as the effective temperature ( T _eff ) and metallicities ([Fe/H]), absolute magnitudes ( M _G )
Mingxu Sun, Bingqiu Chen, Helong Guo, He Zhao, Ming Yang, Wenyuan Cui   +5 more
doaj   +1 more source

Kinematic properties of early-type galaxy haloes using planetary nebulae [PDF]

, 2008
We present new planetary nebulae (PNe) positions, radial velocities, and magnitudes for 6 early-type galaxies obtained with the Planetary Nebulae Spectrograph, their two-dimensional velocity and velocity dispersion fields. We extend this study to include
A. Cortesi, A. J. Romanowsky, Abadi, Arnaboldi, Arnaboldi, Arnaboldi, Baldry, Barnes, Bender, Bender, Bender, Bender, Bertola, Binney, Binney, Blakeslee, Bournaud, Burkert, Buzzoni, Capaccioli, Cappellari, Cappellari, Cappellari, Cattaneo, Ciardullo, Ciardullo, Ciardullo, Ciardullo, Ciotti, Cox, David, De Lorenzi, De Lorenzi, De Lorenzi, de Vaucouleurs, Debattista, Dejonghe, Dekel, Douglas, Douglas, E. Noordermeer, Emsellem, Emsellem, F. De Lorenzi, Faber, Fisher, Forestell, Freedman, Gebhardt, Gebhardt, Gerhard, Gerhard, Goudfrooij, Greggio, Halliday, Hao, Hargreaves, Hui, Ikebe, Jacoby, Jacoby, Jedrzejewski, Jensen, Jesseit, K. C. Freeman, K. Kuijken, Kang, Kissler-Patig, Kormendy, Kormendy, Kormendy, Krajnović, Kronawitter, L. Coccato, Lauer, M. Arnaboldi, M. Capaccioli, M. R. Merrifield, Magorrian, Merrett, Merritt, Méndez, Méndez, N. G. Douglas, N. R. Napolitano, Naab, Naab, Naab, Naab, Napolitano, Napolitano, Napolitano, Napolitano, Noordermeer, O'Sullivan, O. Gerhard, Oosterloo, Oñorbe, P. Das, Peletier, Peng, Pinkney, Rix, Romanowsky, Romeo, Saglia, Sambhus, Samurović, Scarlata, Sikkema, Simien, Sluis, Statler, Sánchez-Blázquez, Teodorescu, Thomas, Tonry, Tremblay, Treu, Valdes, van der Marel, van der Marel, van Dokkum, Weijmans, Weil, Woodley, Wyder   +126 more
core   +3 more sources

The Stellar Kinematics of Elliptical Galaxies [PDF]

Symposium - International Astronomical Union, 1987
The kinematic properties of elliptical galaxies are summarized. New developments are discussed in four areas: (i) the Faber-Jackson relation and the role of second parameters (ii) the luminosity-rotation relation (iii) the figures of elliptical galaxies and (iv) the mass-to-light ratio as a function of radius.
openaire   +3 more sources

Multiple Populations in Star Clusters

Universe, 2022
We review the multiple population (MP) phenomenon of globular clusters (GCs): i.e., the evidence that GCs typically host groups of stars with different elemental abundances and/or distinct sequences in photometric diagrams.
Antonino P. Milone, Anna F. Marino
doaj   +1 more source

Confirmation of an Anomalously Low Dark Matter Content for the Galaxy NGC 1052-DF4 from Deep, High-resolution Continuum Spectroscopy

The Astrophysical Journal, 2023
NGC 1052-DF4 was found to be the second “galaxy lacking dark matter” in the NGC 1052 group, based on its velocity dispersion of ${\sigma }_{\mathrm{gc}}={4.2}_{-2.2}^{+4.4}$ km s ^−1 as measured from the radial velocities of seven of its globular ...
Zili Shen, Pieter van Dokkum, Shany Danieli   +2 more
doaj   +1 more source

All-sky Kinematics and Chemistry of Monoceros Stellar Overdensity

The Astrophysical Journal, 2023
We explore the kinematic and chemical properties of the Monoceros stellar overdensity by combining data from the Two Micron All Sky Survey, Wide-field Infrared Survey Explorer, APOGEE, and Gaia.
Lais Borbolato, Hélio D. Perottoni, Silvia Rossi, Guilherme Limberg, Angeles Pérez-Villegas, Friedrich Anders, Teresa Antoja, Chervin F. P. Laporte, Helio J. Rocha-Pinto, Rafael M. Santucci   +9 more
doaj   +1 more source