Results 101 to 110 of about 4,353 (224)
The Astrophysical JournalWe present a suite of six high-resolution chemodynamical simulations of isolated galaxies, spanning observed disk-dominated environments on the star-forming main sequence, as well as quenched, bulge-dominated environments.
Sarah M. R. Jeffreson +7 more
doaj +1 more source
Discovery of two new millisecond pulsars toward the Galactic bulge
Astronomy & AstrophysicsAims. The mysterious Galactic center (GC) gamma-ray (γ-ray) excess (GCE) could be explained by a large population of millisecond pulsars (MSPs) hiding in the Galactic bulge, too faint to be detected as individual high-energy point sources by the Fermi ...
Berteaud J. +15 more
doaj +1 more source
Rotation of the Galactic bulge
The Astrophysical Journal, 1992 We present results from spectroscopic observations of K giants in two fields towards the Galactic bulge. The mean Galactocentric velocity and velocity dispersion for a field at l, b=(8,7) are =45±10 km s −1 and σ=85±7 km s −1 . For a field at l, b=(12,3) we find =77±9 km s −1 and σ=68±6 km s −1 . The bulge of the Galaxy is found to be rotating, and
Dante Minniti +3 more
openaire +1 more source
Astronomy & AstrophysicsIn this paper, we present the chemical screening of the stellar population belonging to the globular cluster NGC 6553 in the Galactic bulge. This study has been conducted in the contest of the Bulge Cluster Origin (BulCO) survey, an ESO-VLT Large Program
Bartolomei A. +12 more
doaj +1 more source
Advances in Astronomy, 2015 In recent years free-floating planets (FFPs) have drawn a great interest among astrophysicists. Gravitational microlensing is a unique and exclusive method for their investigation which may allow obtaining precious information about their mass and ...
Lindita Hamolli +3 more
doaj +1 more source
Positron Transport and Annihilation in the Galactic Bulge
Galaxies, 2018 The annihilation of positrons in the Milky Way Galaxy has been observed for ∼50 years; however, the production sites of these positrons remains hard to identify.
Fiona Helen Panther
doaj +1 more source
Chemistry of the Galactic Bulge
, 1998 The chemical abundances of the Galaxy tell us about the stellar and interstellar medium (ISM) evolution history. By studying the present-day chemistry of various stars (and the ISM), and combining with stellar evolution models and Galactic evolution ...
Barlow, M +4 more
core
Manganese abundances in Galactic bulge red giants [PDF]
, 2013 Context. Manganese is mainly produced in type II SNe during explosive silicon burning, in incomplete Si-burning regions, and depends on several nucleosynthesis environment conditions, such as mass cut between the matter ejected and ...
Trévisan, M. +20 more
core +1 more source
The Galactic bulge as seen by Gaia
, 2004 Gaia will give tremendous results on galactic structure and evolution. One expects to get unprecedented information even in dense regions like the Galactic bulge. However, due to extinction and crowding, part of the inner Galaxy may be unreachable. Using
Reylé, Céline +3 more
core
The Galactic Bulge: metallicity and perspective
, 2019 I will briefly review the history of bulge metallicity measurements from early studies to the present, including photometric constraints. I will consider the upper limit of iron metallicity in the bulge, how the field relates to chemically complex ...
Johnson, Christian (6471284) +7 more
core +1 more source