Results 101 to 110 of about 73,308 (215)

Revealing Gas Inflows Toward the Galactic Central Molecular Zone

open access: yesThe Astrophysical Journal Letters
We study the gas inflows toward the Galactic Central Molecular Zone (CMZ) based on the gas morphological and kinematic features from the Milky Way Imaging Scroll Painting in the region of l = 1.°2–19.°0 and ∣ b ∣ ≲ 3.°0.
Yang Su   +9 more
doaj   +1 more source

Modeling the Accretion of High-velocity Clouds from a Rotating Halo

open access: yesThe Astrophysical Journal
High-velocity clouds (HVCs) are a major fuel reservoir for star formation in the Galactic disk. Determining their origin and kinematics is thus crucial for understanding Galactic evolution.
Izumi Seno   +2 more
doaj   +1 more source

Linnutee [PDF]

open access: yesMäetagused, 2002
Astronomically, the Milky Way is a big star system _ a galaxy. The word galaxy is derived from the Greek gala `milk'. In many languages the Milky Way's name is connected with milk. However, in Estonia this form of the name is rare.
Andres Kuperjanov
doaj  

The size of the Milky Way galaxy

open access: yes
The size of a galaxy is one of the fundamental parameters that reflects its growth and assembly history. Traditionally, the size of the Milky Way has been characterized by the scale length of the disk, based on the assumption of an exponential density profile. Earlier scale length measurements suggest the Milky Way is an overly compact galaxy, compared
Lian, Jianhui   +6 more
openaire   +2 more sources

The Structure, Populations, and Kinematics of the Milky Way Central and Inner Bulge with OGLE, APOGEE, and Gaia Data

open access: yesThe Astrophysical Journal
We present an analysis of the structure, kinematics, and chemo-dynamical properties of the Milky Way bulge using RR Lyrae stars from Optical Gravitational Lensing Experiment (OGLE), and giant stars from APOGEE and Gaia that have distances placing them in
Xiao Han   +7 more
doaj   +1 more source

A Wave-corrected Assessment of the Local Midplane

open access: yesThe Astrophysical Journal
As the number of known Galactic structures mounts thanks to the Gaia Space Telescope, it is now pertinent to study methods for disentangling structures occupying the same regions of the Milky Way. Indeed, understanding the precise form of each individual
Ziyuan Yin, Austin Hinkel
doaj   +1 more source

Differential Accretion of Ionized Low-velocity Gas at the Milky Way’s Disk–Halo Interface

open access: yesThe Astrophysical Journal
We measure line-of-sight velocities of metal absorption and H I emission along 132 QSO sight lines in order to study gas accretion and outflow at the disk–halo interface of the Milky Way.
Hannah V. Bish   +5 more
doaj   +1 more source

Galaxies Behind the Milky Way and the Great Attractor [PDF]

open access: yes, 2000
Lecture Series presented at the Mexican School of Astrophysics in Guanajuato, August 1999. In press in the series "Lecture Notes in Physics: GTO Lectures on Astrophysics", eds. D. Page and J. Hirsch, Springer: Heidelberg, p301-344, 18 figures, uses various included stylefiles. Version with full resolution available upon request (kraan@astro.ugto.mx)
openaire   +2 more sources

The Rapid Formation of the Metal-poor Milky Way

open access: yesThe Astrophysical Journal
Our understanding of the assembly timeline of the Milky Way has been transforming along with the dramatic increase in astrometric and spectroscopic data available over the past several years.
Turner Woody   +8 more
doaj   +1 more source

Non-association of a celestial gamma ray source with the new Milky Way satellite galaxy [PDF]

open access: yes
The newly discovered satellite galaxy located in the Milky Way galactic anti-center region is discussed along with the possibility that a nearby gamma ray source is associated with it.
Fichtel, C. E.   +2 more
core   +1 more source

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