Results 51 to 60 of about 531,438 (331)

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

A Gemini/GMOS Study of Intermediate Luminosity Early-Type Virgo Cluster Galaxies. I. Globular Cluster and Stellar Kinematics

, 2015
We present a kinematic analysis of the globular cluster systems and diffuse stellar light of four intermediate luminosity (sub-$L^{\ast}$) early-type galaxies in the Virgo cluster based on Gemini/GMOS data.
Blakeslee, John P., Côté, Patrick, Ferrarese, Laura, Jordán, Andrés, Li, Biao, Liu, Chengze, Mei, Simona, Peng, Eric W., Puzia, Thomas H., Takamiya, Marianne, Trancho, Gelys, West, Michael J., Zhang, Hong-xin   +12 more
core   +2 more sources

Molecular gas in NUclei of GAlaxies (NUGA) XV. Molecular gas kinematics in the inner 3kpc of NGC6951 [PDF]

, 2011
Within the NUclei of GAlaxies project we have obtained IRAM PdBI and 30m 12CO(1-0) and 12CO(2-1) observations of the spiral galaxy NGC 6951. Previous work shows that there is indirect evidence of gas inflow from 3 kpc down to small radii: a large-scale ...
Baker, A. J., Boone, F., Combes, F., Garcia-Burillo, S., Haan, S., Hunt, L., Leon, S., Schinnerer, E., van der Laan, T. P. R.   +8 more
core   +3 more sources

Mass density slope of elliptical galaxies from strong lensing and resolved stellar kinematics [PDF]

, 2017
We discuss constraints on the mass density distribution (parameterized as $\rho\propto r^{-\gamma}$) in early-type galaxies provided by strong lensing and stellar kinematics data. The constraints come from mass measurements at two `pinch' radii.
Natalia Lyskova, E. Churazov, Thorsten Naab Hse, Iki, Mpa   +4 more
semanticscholar   +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

On the origin of bursts in blue compact dwarf galaxies: clues from kinematics and stellar populations [PDF]

, 2014
Blue compact dwarf galaxies (BCDs) form stars at, for their sizes, extraordinarily high rates. In this paper, we study what triggers this starburst and what is the fate of the galaxy once its gas fuel is exhausted.
De Rijcke, S., Koleva, M., Schroyen, J., Verbeke, R., Vermeylen, L, Zeilinger, W. W.   +5 more
core   +2 more sources

The effects of bar-spiral coupling on stellar kinematics in the Galaxy [PDF]

, 2016
We investigate models of the Milky Way disc taking into account simultaneously the bar and a two-armed quasi-static spiral pattern. Away from major resonance overlaps, the mean stellar radial motions in the plane are essentially a linear superposition of
G. Monari, B. Famaey, A. Siebert, R. Grand, D. Kawata, C. Boily   +5 more
semanticscholar   +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

Simulated stellar kinematics studies of high-redshift galaxies with the HARMONI Integral Field Spectrograph [PDF]

, 2016
We present a study into the capabilities of integrated and spatially resolved integral field spectroscopy of galaxies at z = 2–4 with the future HARMONI spectrograph for the European Extremely Large Telescope (E-ELT) using the simulation pipeline, HSIM ...
S. Kendrew, S. Zieleniewski, R. Houghton, N. Thatte, J. Devriendt, M. Tecza, F. Clarke, K. O’Brien, B. H. U. O. Oxford, Eső, Santiago, U. Hertfordshire   +11 more
semanticscholar   +1 more source

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