Results 131 to 140 of about 46,922 (223)
Relationship between the Elemental Abundances and the Kinematics of Galactic-Field RR Lyrae Stars
, 2017 Data of our compiled catalog containing the positions, velocities, and metallicities of 415 RR~Lyrae variable stars and the relative abundances [el/Fe] of 12~elements for 101 RR~Lyrae stars, including four $\alpha$~elements (Mg, Ca, Si, and Ti), are used
Gozha, M. L. +2 more
core +1 more source
Visit Nearby Halo Substructures Using LAMOST DR9 MRS Data
The Astrophysical JournalBased on the LAMOST DR9 Medium Resolution Spectra (MRS) catalog, combined with astrometries from Gaia DR3, we conducted an investigation into the substructures in the stellar halo to obtain their chemical and kinematic information.
Xin-Zhe Tang +5 more
doaj +1 more source
High-resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096
The Astrophysical JournalLuminous and ultraluminous IR galaxies are critical for investigating feedback mechanisms due to a combination of intense star formation episodes and active galactic nuclei (AGN), particularly in the context of complex galaxy interactions.
Clemente Riesco +22 more
doaj +1 more source
Galaxies: From Kinematics to Dynamics
, 2000 17 pages, including 7 figures, using Sussp.sty (included). Lectures presented at the NATO Advanced Study Institute, "The Restless Universe: Applications of Gravitational N-Body Dynamics to Planetary, Stellar and Galactic Systems," Blair Atholl, July ...
openaire +2 more sources
Kinematic and Dynamics of the Galaxy ESO 358-60
The Astrophysical JournalWe investigate the velocity field derived from H I measurements of the irregular galaxy ESO 358-60 using the velocity ring model (VRM) method. This technique, which assumes a coplanar disk, allows us to reconstruct coarse-grained maps of both radial and ...
Francesco Sylos Labini +1 more
doaj +1 more source
A Stellar Dynamical Mass for the Central Black Hole in MCG–06-30-15
The Astrophysical JournalWe present the stellar dynamical (SD) mass of the central black hole in the nearby Seyfert galaxy MCG–06-30-15 using the Schwarzschild orbit-superposition method implemented in the open-source code FORSTAND .
Nabanita Das +6 more
doaj +1 more source
A Dual Active Black Hole Candidate with Mass Ratio ~7:1 in a Disk Galaxy
The Astrophysical Journal LettersDual active galactic nuclei (AGNs) with comparable masses are commonly witnessed among the major merged galaxies with interaction remnants. Considering almost every massive galaxy is associated with multiple dwarf satellites around it, minor mergers ...
Xiao Cao +10 more
doaj +1 more source
The Open Journal of AstrophysicsWe investigate the effects of ram-pressure stripping on four galaxies within the massive, strong-lensing cluster MACS-J0138.0-2155 ($z=0.336$). Of these, three are classified as jellyfish galaxies, with significant elongated tails. Two of these jellyfish
Catherine C. Gibson +2 more
doaj +1 more source
87th Annual Meeting of the Meteoritical Society 2025: Abstracts
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley +1 more source
Formation time-scales for stellar bars in diverse galactic discs. [PDF]
Mon Not R Astron SocFrosst M, Obreschkow D, Ludlow A.
europepmc +1 more source