Results 51 to 60 of about 220,363 (170)

The Age-dependent Vertical Actions of Young Stars in the Galaxy

The Astrophysical Journal
Stars in the Galactic disk are born on cold, nearly circular orbits with small vertical excursions. After their birth, their orbits evolve, driven by small- or large-scale perturbations in the Galactic disk’s gravitational potential.
D. N. Garzon, Neige Frankel, Eleonora Zari, Maosheng Xiang, Hans-Walter Rix   +4 more
doaj   +1 more source

The ESO-Max Planck photometric and spectroscopic survey in the south: EMPhaSSiS

EPJ Web of Conferences, 2012
EMPhaSSiS is a photometric and spectroscopic survey of the disk of the Milky Way. The survey covers 33 fields in the 3rd quadrant of the Milky Way and probes every ten degrees in Galactic Longitude between l = 180∘ - 280∘ and at Galactic Latitudes of b =
Ibata R., Lane R., Lewis G., Bensby T., Noël N., Martin N., Rix H.-W., Ederoclite A., Conn B., Irwin M., Beers T., Lee Y.S.   +11 more
doaj   +1 more source

Microlensing Events in Five Years of Photometry from the Zwicky Transient Facility

The Astrophysical Journal
Microlensing has a unique advantage for detecting dark objects in the Milky Way, such as free-floating planets, neutron stars, and stellar-mass black holes.
Ruocheng Zhai, Antonio C. Rodriguez, Shude Mao, Casey Y. Lam, Eric C. Bellm, Josiah Purdum, Frank J. Masci, Avery Wold   +7 more
doaj   +1 more source

Comparing the structural parameters of the Milky Way to other spiral galaxies [PDF]

The structural parameters of a galaxy can be used to gain insight into its formation and evolution history. In this paper, we strive to compare the Milky Way's structural parameters to other, primarily edge-on, spiral galaxies in order to determine how our Galaxy measures up to the Local Universe.
arxiv   +1 more source

Radial Wave in the Galactic Disk: New Clues to Discriminate Different Perturbations

The Astrophysical Journal
Decoding the key dynamical processes that shape the Galactic disk structure is crucial for reconstructing the Milky Way’s evolution history. The second Gaia data release unveils a novel wave pattern in the L _Z −〈 V _R 〉 space, but its formation ...
Chengye Cao, Zhao-Yu Li, Ralph Schönrich, Teresa Antoja   +3 more
doaj   +1 more source

Modeling the Radial Distribution of Pulsars in the Galaxy

The Astrophysical Journal Letters
The Parkes 20 cm multibeam pulsar surveys have discovered nearly half of the known pulsars and revealed many distant pulsars with high dispersion measures.
J. T. Xie, J. B. Wang, N. Wang, R. Manchester, G. Hobbs   +4 more
doaj   +1 more source

Mapping the Galactic Disk with the LAMOST and Gaia Red Clump Sample. VIII. Mapping the Kinematics of the Galactic Disk Using Mono-age and Mono-abundance Stellar Populations

The Astrophysical Journal
We present a comprehensive study of the kinematic properties of the different Galactic disk populations, as defined by the chemical abundance ratios and stellar ages, across a large disk volume (4.5 ≤ R ≤ 15.0 kpc and ∣ Z ∣ ≤ 3.0 kpc), by using the ...
Weixiang Sun, Yang Huang, Han Shen, Chun Wang, Huawei Zhang, Zhijia Tian, Xiaowei Liu, Biwei Jiang   +7 more
doaj   +1 more source

Are dSph galaxies Galactic building blocks?

EPJ Web of Conferences, 2012
Dwarf spheroidal galaxies (dSph) are frequently assumed to represent surviving examples of a vast now destroyed population of small systems in which many of the stars now forming the Milky Way were formed. Ongoing accretion and considerable sub-structure
Gilmore G., Asiri H.M.
doaj   +1 more source

Milky Way Disk [PDF]

arXiv
Our understanding of the Milky Way disk is rapidly improving with the recent advent of the high quality and vast amount of observational data. We summarize our current view of the structure of the Milky Way disk, such as the masses and sizes of the gas and stellar disks, and the position and motion of the Sun in the disk.
arxiv  

A Radio Survey of the Southern Milky Way at a Frequency of 1440 Mc/s. II. The Continuum Emission from the Galactic Disk [PDF]

, 1962
DS Mathewson, J. R. Healey, JM Rome
openalex   +1 more source