Results 41 to 50 of about 35,587 (387)
What Does the Milky Way Look Like?
The Astrophysical Journal, 2023 In spite of much work, the overall spiral structure morphology of the Milky Way remains somewhat uncertain. In the last two decades, accurate distance measurements have provided us with an opportunity to solve this issue.
Y. Xu +7 more
doaj +1 more source
A Relativistic Disk in Sagittarius A* [PDF]
Astronomische Nachrichten, 2003 The detection of a mm/Sub-mm ``bump'' in Sgr A*'s radio spectrum suggests that at least a portion of its overall emission is produced within a compact accretion torus. This inference is strengthened by observations of strong linear polarization (at the 10 percent level) within this bump. No linear polarization has been detected yet at other wavelengths.
Fulvio Melia, Siming Liu
openaire +3 more sources
The Disruption of the Sagittarius Dwarf Galaxy [PDF]
The Astrophysical Journal, 1995 Numerical simulations of dwarf spheroidal galaxies undergoing several close encounters with the Milky Way are described. By comparing our models to observed properties of the recently discovered dwarf galaxy in Sagittarius (Sgr), we discuss implications of our results for the formation and evolution of the Milky Way system.
Lars Hernquist +2 more
openaire +3 more sources
The Proper Motion of Sagittarius A*. III. The Case for a Supermassive Black Hole [PDF]
Astrophysical Journal, 2020 We report measurements with the Very Long Baseline Array of the proper motion of Sgr A* relative to two extragalactic radio sources spanning 18 yr. The apparent motion of Sgr A* is −6.411 ± 0.008 mas yr−1 along the Galactic plane and −0.219 ± 0.007 mas ...
M. Reid, A. Brunthaler
semanticscholar +1 more source
The Sagittarius stream and halo triaxiality [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 21 pages, 13 figures, 3 tables, accepted to ...
Lawrence M. Widrow, Nathan Deg
openaire +3 more sources
Kinematics of the outer pseudorings and the spiral structure of the Galaxy [PDF]
, 2008 The kinematics of the outer rings and pseudorings is determined by two processes: the resonance tuning and the gas outflow. The resonance kinematics is clearly observed in the pure rings, while the kinematics of the gas outflow is manifested itself in ...
A. Cabrera-Lavers +48 more
core +2 more sources
A fork in the Sagittarius trailing debris [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 15 pages, 12 figures, accepted for publication in ...
Camila Navarrete +10 more
openaire +6 more sources
THE VARIABILITY OF SAGITTARIUS A* AT 3 MILLIMETER [PDF]
The Astrophysical Journal, 2008 25 pages, 6 figures, accepted by ...
Takahiro Tsutsumi +9 more
openaire +3 more sources
Whiting 1: Confirmation of its accretion by the Milky Way
EPJ Web of Conferences, 2017 We investigate the association of Whiting 1 with the Sagittarius tidal stream by obtaining radial velocities for a sample of 101 stars observed with VIMOS.
Carballo-Bello Julio A. +6 more
doaj +1 more source
Graellsia, 2022 Se han examinado dos cuantiosas colecciones de Cylindroiulus (una del País Vasco y Navarra y otra de Andalucía), y se han suplementado con otras, más pequeñas, de otras áreas de España; en total se han encontrado 10 especies. Se han descrito tres nuevas
Helen J. Read
doaj +1 more source