Results 1 to 10 of about 46,709 (222)
The Astrophysical Journal, 2023 We use the conjugate angle of radial action ( θ _R ), the best representation of the orbital phase, to explore the “midplane,” “north branch,” “south branch,” and “Monoceros area” disk structures that were previously revealed in the LAMOST K giants.
Y. Xu +7 more
doaj +1 more source
Testing the nature of S0 galaxies using planetary nebula kinematics in NGC 1023 [PDF]
, 2007 We investigate the manner in which lenticular galaxies are formed by studying their stellar kinematics: an S0 formed from a fading spiral galaxy should display similar cold outer disc kinematics to its progenitor, while an S0 formed in a minor merger ...
Arnaboldi, M. +11 more
core +8 more sources
The Astrophysical Journal, 2023 Dwarf galaxies located in extremely underdense cosmic voids are excellent test beds for disentangling the effects of large-scale environments on galaxy formation and evolution. We present the first results of the Dwarfs in Void Environments Survey, which
Mithi A. C. de los Reyes +5 more
doaj +1 more source
galkin: A new compilation of Milky Way rotation curve data
SoftwareX, 2017 We present galkin, a novel compilation of kinematic measurements tracing the rotation curve of our Galaxy together with a tool to treat the data. The compilation is optimised to Galactocentric radii between 3 and 20 kpc and includes the kinematics of gas,
Miguel Pato, Fabio Iocco
doaj +1 more source
TREX: Kinematic Characterization of a High-dispersion Intermediate-age Stellar Component in M33
The Astrophysical Journal, 2023 The dwarf galaxy Triangulum (M33) presents an interesting testbed for studying stellar halo formation: it is sufficiently massive so as to have likely accreted smaller satellites, but also lies within the regime where feedback and other “in situ ...
L. R. Cullinane +9 more
doaj +1 more source
Discovery of Multi-Phase Cold Accretion in a Massive Galaxy at z=0.7 [PDF]
, 2012 We present detailed photo+collisional ionization models and kinematic models of the multi-phase absorbing gas, detected within the HST/COS, HST/STIS, and Keck/HIRES spectra of the background quasar TON 153, at 104 kpc along the projected minor axis of a ...
C. C. Steidel +5 more
core +1 more source
Translators of Galaxy Morphology Indicators between Observation and Simulation
The Astrophysical Journal, 2023 Based on the recent advancements in numerical simulations of galaxy formation, we anticipate the achievement of realistic models of galaxies in the near future.
J. K. Jang +11 more
doaj +1 more source
Mapping the inner regions of the polar disk galaxy NGC4650A with MUSE [PDF]
, 2015 [abridged] The polar disk galaxy NGC4650A was observed during the commissioning of the MUSE at the ESO VLT to obtain the first 2D map of the velocity and velocity dispersion for both stars and gas.
Arnaboldi, M. +8 more
core +4 more sources
The benchmark black hole in NGC 4258: dynamical models from high-resolution two-dimensional stellar kinematics [PDF]
, 2015 NGC 4258 is the galaxy with the most accurate (maser-based) determination for the mass of the supermassive black hole (SMBH) in its nucleus. In this work we present a two-dimensional mapping of the stellar kinematics in the inner 3.0 x 3.0 arcsec = 100 x
Bergmann, Thaisa Storchi +4 more
core +2 more sources
Spectral decomposition of the stellar kinematics in the polar disk galaxy NGC 4650A [PDF]
, 2014 Context. The prototype of Polar Ring Galaxies NGC 4650A contains two main structural components, a central spheroid, which is the host galaxy, and an extended polar disk.
Arnaboldi, M., Coccato, L., Iodice, E.
core +1 more source