Results 41 to 50 of about 106,694 (288)
Fundamental Parameters of the Milky Way Galaxy Based on VLBI Astrometry [PDF]
, 2012 We present analyses to determine the fundamental parameters of the Galaxy based on VLBI astrometry of 52 Galactic maser sources obtained with VERA, VLBA, and EVN.
M. Honma +33 more
semanticscholar +1 more source
How Common are the Magellanic Clouds? [PDF]
, 2011 We introduce a probabilistic approach to the problem of counting dwarf satellites around host galaxies in databases with limited redshift information.
Abazajian +33 more
core +2 more sources
CATALOG OF OBSERVED TANGENTS TO THE SPIRAL ARMS IN THE MILKY WAY GALAXY [PDF]
, 2014 From the Sun's location in the Galactic disk, one can use different arm tracers (CO, H i, thermal or ionized or relativistic electrons, masers, cold and hot dust, etc.) to locate a tangent to each spiral arm in the disk of the Milky Way.
J. Vallée
semanticscholar +1 more source
Modeling of Spiral Structure in a Multi-Component Milky~Way-Like Galaxy [PDF]
Galaxies, 2021 Using recent observational data, we construct a set of multi-component equilibrium models of the disk of a Milky Way-like galaxy. The disk dynamics are studied using collisionless-gaseous numerical simulations, based on the joined integration of the ...
S. Khrapov, A. Khoperskov, V. Korchagin
semanticscholar +1 more source
STEALTH GALAXIES IN THE HALO OF THE MILKY WAY [PDF]
The Astrophysical Journal, 2010 We predict that there is a population of low-luminosity dwarf galaxies orbiting within the halo of the Milky Way that have surface brightnesses low enough to have escaped detection in star-count surveys. The overall count of stealth galaxies is sensitive to the presence (or lack) of a low-mass threshold in galaxy formation.
Erik Tollerud +4 more
openaire +4 more sources
Why is the Milky Way X-factor Constant? [PDF]
, 2013 The CO-H2 conversion factor (Xco; otherwise known as the X-factor) is observed to be remarkably constant in the Milky Way and in the Local Group (aside from the SMC). To date, our understanding of why Xco should be so constant remains poor.
Hopkins, Philip, Narayanan, Desika
core +2 more sources
Gas dynamics and large-scale morphology of the Milky Way galaxy [PDF]
, 1998 We present a new model for the gas dynamics in the galactic disc inside the orbit of the Sun. Quasi-equilibrium flow solutions are determined in the gravitational potential of the deprojected COBE near-infrared bar and disc, complemented by a central ...
P. Englmaier +6 more
semanticscholar +1 more source
Detection of the Keplerian decline in the Milky Way rotation curve [PDF]
Astronomy & Astrophysics, 2023 Our position inside the Galactic disc had prevented us from establishing an accurate rotation curve, until the advent of Gaia, whose third data release (Gaia DR3) made it possible to specify it up to twice the optical radius.
Y. Jiao +6 more
semanticscholar +1 more source
Short-lived Radionuclides in the Milky Way Galaxy [PDF]
EPJ Web of Conferences, 2023 The short-lived radionuclides (SLRs) have a half-life ≤ 100 Myr. The γ-ray observations and excess abundance of their daughter nuclides in various meteoritic phases confirm the existence of SLRs in the Galaxy and early solar system (ESS), respectively ...
Kaur Tejpreet
doaj +1 more source
The Astrophysical Journal, 2023 We continue our series of papers on phase-space distributions of stars in the Milky Way based on photometrically derived metallicities and Gaia astrometry, with a focus on the halo−disk interface in the local volume.
Deokkeun An +3 more
doaj +1 more source