Results 111 to 120 of about 106,694 (288)
A trio of new Local Group galaxies with extreme properties
, 2008 We report on the discovery of three new dwarf galaxies in the Local Group. These galaxies are found in new CFHT/MegaPrime g,i imaging of the south-western quadrant of M31, extending our extant survey area to include the majority of the southern ...
Alan W. McConnachie +16 more
core +1 more source
Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys
The Astrophysical Journal Supplement SeriesPhotometric stellar surveys now cover a large fraction of the sky, probe to fainter magnitudes than large-scale spectroscopic surveys, and are relatively free from the target selection biases often associated with such studies.
Jihye Hong +17 more
doaj +1 more source
Journal of Geophysical Research: Atmospheres, Volume 130, Issue 16, 28 August 2025.Abstract In this study, we have investigated short‐period (< ${< } $1 hr) atmospheric gravity waves (AGWs) in the Arctic mesosphere‐lower thermosphere (MLT) region during January of 2014, 2015, and 2016. We used OH (3,1) band emission data from the Advanced Mesospheric Temperature Mapper (AMTM) at the Arctic Lidar Observatory for Middle Atmosphere ...
Subir Mandal +5 more
wiley +1 more source
The Dichotomy of the Halo of the Milky Way
, 2008 We summarize evidence that the halo of the Milky Way comprises two different, and broadly overlapping, stellar components. The two structures exhibit different chemical compositions, spatial distributions, and kinematics.
Akira Ohnishi +8 more
core +1 more source
Additional Evidence for the Existence of a Primordial Disk System
The Astrophysical JournalThe origin of very metal-poor (VMP; [Fe/H] ≤ −2.0) stars on planar orbits has been the subject of great attention since their first discovery. However, prior to the release of the Gaia BP/RP (XP) spectra and large photometric samples such as SkyMapper ...
Shuai Xu +9 more
doaj +1 more source
The Stellar Disk Structure Revealed by the Mono-age Populations of the LAMOST Red Clump Star Sample
The Astronomical JournalUnderstanding the structure of the Galactic disk is crucial for understanding the formation and evolutionary history of the Milky Way. This study examines the structure of the Galactic disk by analyzing a sample of 138,667 primary red clump (RC) stars ...
Zheng Yu +4 more
doaj +1 more source
Rotation and mass in the Milky Way and spiral galaxies [PDF]
Publications of the Astronomical Society of Japan, 2016 Abstract Rotation curves are the basic tool for deriving the distribution of mass in spiral galaxies. In this review, we describe various methods to measure rotation curves in the Milky Way and spiral galaxies. We then describe two major methods to calculate the mass distribution using the rotation curve.
openaire +4 more sources
Faraday rotation maps of disk galaxies
, 2018 Faraday rotation is one of the most widely used observables to infer the strength and configuration of the magnetic field in the ionised gas of the Milky Way and nearby spiral galaxies.
Gomez, Facundo A. +7 more
core +1 more source
A catalog of galaxies behind the Southern Milky Way [PDF]
, 2000 R. C. Kraan‐Korteweg
openalex +2 more sources
Metallicity Mapping of the Ionized Diffuse Gas at the Milky Way Disk–Halo Interface
The Astrophysical JournalMetals in the diffuse, ionized gas at the boundary between the Milky Way’s interstellar medium (ISM) and circumgalactic medium, known as the disk–halo interface (DHI), are valuable tracers of the feedback processes that drive the Galactic fountain ...
Bo-Eun Choi +7 more
doaj +1 more source