Results 71 to 80 of about 1,423 (194)

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

open access: yesEPJ 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.   +11 more
doaj   +1 more source

Disk Galaxy Evolution: From the Milky Way to High-Redshift Disks [PDF]

open access: yesAstrophysics and Space Science, 2003
We develop a detailed model of the Milky Way (a ``prototypical'' disk galaxy) and extend it to other disks with the help of some simple scaling relations, obtained in the framework of Cold Dark Matter models. This phenomenological (``hybrid'') approach to the study of disk galaxy evolution allows us to reproduce successfully a large number of observed ...
openaire   +4 more sources

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

open access: yesThe 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   +7 more
doaj   +1 more source

The Milky Way and its gas: Cold fountains and accretion

open access: yesEPJ Web of Conferences, 2012
The Milky Way is acquiring gas from infalling high-velocity clouds. The material enters a disk-halo interface that in many places is populated with HI clouds that have been ejected from the disk through processes linked to star formation. The Smith Cloud
Lockman F.J.
doaj   +1 more source

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

open access: yesThe 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   +3 more
doaj   +1 more source

Modeling the Radial Distribution of Pulsars in the Galaxy

open access: yesThe 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   +4 more
doaj   +1 more source

Asymmetric Mean Metallicity Distribution of the Milky Way’s Disk [PDF]

open access: yesThe Astrophysical Journal Letters, 2019
Abstract I present the mean metallicity distribution of stars in the Milky Way based on photometry from the Sloan Digital Sky Survey. I utilize an empirically calibrated set of stellar isochrones developed in previous work to estimate the metallicities of individual stars to a precision of 0.2 dex for reasonably bright stars across the ...
openaire   +3 more sources

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

open access: yesThe 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   +7 more
doaj   +1 more source

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