Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way [PDF]
, 2017 We present a detailed elemental abundance study of 90 F and G dwarf, turn-off and subgiant stars in the Galactic bulge. Based on high-resolution spectra acquired during gravitational microlensing events, stellar ages and abundances for 11 elements (Na ...
T. Bensby +35 more
semanticscholar +1 more source
The Galactic Bulge Diffuse Emission in Broadband X-Rays with NuSTAR [PDF]
Astrophysical Journal, 2019 The diffuse hard X-ray emission that fills the Galactic center, bulge, and ridge is believed to arise from unresolved populations of X-ray binary systems.
K. Perez, R. Krivonos, D. Wik
semanticscholar +1 more source
Prediction of Planet Yields by the PRime-focus Infrared Microlensing Experiment Microlensing Survey
The Astronomical Journal, 2023 The PRime-focus Infrared Microlensing Experiment (PRIME) will be the first to conduct a dedicated near-infrared microlensing survey by using a 1.8 m telescope with a wide field of view of 1.45 deg ^2 at the South African Astronomical Observatory.
Iona Kondo +5 more
doaj +1 more source
Dynamical modelling of the galactic bulge and bar: the Milky Way's pattern speed, stellar and dark matter mass distribution [PDF]
, 2016 We construct a large set of dynamical models of the galactic bulge, bar and inner disk using the Made-to-Measure method. Our models are constrained to match the red clump giant density from a combination of the VVV, UKIDSS and 2MASS infrared surveys ...
Matthieu Portail +4 more
semanticscholar +1 more source
The Nuclear Bulge of the Galaxy. III. Large-Scale Physical Characteristics of Stars and Interstellar Matter [PDF]
, 2002 We analyse IRAS and COBE DIRBE data at wavelengths between 2.2 and 240 mu of the central 500pc of the Galaxy and derive the large-scale distribution of stars and interstellar matter in the Nuclear Bulge.
Afflerbach +81 more
core +3 more sources
Galactic bulges: overview [PDF]
Proceedings of the International Astronomical Union, 2007 AbstractThis overview of galactic bulges begins with a discussion of the various kinds of bulges (classical, boxy/peanut-shaped, pseudo) and their likely formation mechanisms. Other specific topics include the Galactic bar/bulge and its chemical evolution, the bulge of M31, the relation between bulges and metal-poor halos (often lumped together as ...
openaire +1 more source
Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data [PDF]
Astronomy & Astrophysics, 2018 Context. Type II Cepheids (T2Cs) are radially pulsating variables that trace old stellar populations and provide distance estimates through their period-luminosity (PL) relation. Aims.
V. Braga +34 more
semanticscholar +1 more source
Publications of the Astronomical Society of Australia, 2016 AbstractThe Galactic bulge is the least studied component of our Galaxy. Yet, its formation and evolution are key to understand the formation of the Galaxy itself. Studies on the Galactic bulge have increased significantly in the last years, but still there are many points of controversy.
openaire +1 more source
Weighing the two stellar components of the Galactic bulge [PDF]
Astronomy & Astrophysics, 2018 Context.Recent spectroscopic surveys of the Galactic bulge have unambiguously shown that the bulge contains two main components, which are best separated by their iron content, but also differ in spatial distribution, kinematics, and abundance ratios ...
M. Zoccali, E. Valenti, O. Gonzalez
semanticscholar +1 more source
A boxy bulge in the Milky Way. Inversion of the stellar statistics equation with 2MASS data [PDF]
, 2005 Inverting the stellar statistics equation from 2MASS star counts, we obtain the 3D density distribution of the Galactic bulge as well as its luminosity function in the K-band.
A. Cabrera-Lavers +20 more
core +1 more source