Results 31 to 40 of about 217,419 (251)
The WFC3 Galactic Bulge Treasury Program: Relative Ages of Bulge Stars of High and Low Metallicity [PDF]
Astrophysical Journal, 2018 The Hubble Space Telescope/WFC3 multiband photometry spanning from the UV to the near-IR of four fields in the Galactic bulge, together with that for six template globular and open clusters, are used to photometrically tag the metallicity [Fe/H] of stars
A. Renzini +8 more
semanticscholar +1 more source
Abundances of planetary nebulae in the Galactic bulge [PDF]
, 2015 Context. Planetary nebulae (PNe) abundances are poorly known for those nebulae in the Galactic bulge. This is because of the high and uneven extinction in the bulge which makes visual spectral measurements difficult.
Asplund +32 more
core +2 more sources
The formation of galactic bulges [PDF]
Proceedings of Baryons in Dark Matter Halos — PoS(BDMH2004), 2004 We summarise some recent results about nearby galactic bulges, relevant to their formation. We highlight a number of significant advances in our understanding of the surface brightness profiles, stellar populations, and especially the very centers of spirals. We also view our own Milky Way as if it were an external galaxy. Our main conclusions are that
Peletier, R. +3 more
openaire +3 more sources
Three candidate globular clusters discovered in the Galactic bulge [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2019 This work reports the discovery of three new globular clusters (GCs) towards the Galactic bulge - Camargo 1107, 1108, and 1109. The discovery was made using the WISE, 2MASS, VVV, and Gaia-DR2 photometry. The new findings are old (12.0-13.5 Gyr) and metal-
D. Camargo, D. Minniti
semanticscholar +1 more source
X-ray Insight into High-Energy Processes in Extreme Galactic Nuclear Environment
Universe, 2022 Nuclear regions of galaxies apparently play a disproportionately large role in regulating their formation and evolution. How this regulation works, however, remains very uncertain.
Q. Daniel Wang
doaj +1 more source
Radio detection prospects for a bulge population of millisecond pulsars as suggested by Fermi LAT observations of the inner Galaxy [PDF]
, 2016 Analogously to globular clusters, the dense stellar environment of the Galactic center has been proposed to host a large population of as-yet undetected millisecond pulsars (MSPs).
Calore, Francesca +4 more
core +4 more sources
ARGOS – II. The Galactic bulge survey [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Abstract We describe the motivation, field locations and stellar selection for the Abundances and Radial velocity Galactic Origins Survey (ARGOS) spectroscopic survey of 28 000 stars in the bulge and inner disc of the Milky Way galaxy across latitudes of b = −5° to −10°.
Freeman, K. +10 more
openaire +4 more sources
The chemical evolution of the Galactic Bulge seen through micro-lensing events
EPJ Web of Conferences, 2012 Galactic bulges are central to understanding galaxy formation and evolution. Here we report on recent studies using micro-lensing events to obtain spectra of high resolution and moderately high signal-to-noise ratios of dwarf stars in the Galactic bulge.
Lucatello S. +8 more
doaj +1 more source
Chemodynamical modelling of the galactic bulge and bar [PDF]
, 2017 We present the first self-consistent chemodynamical model fitted to reproduce data for the galactic bulge, bar and inner disk. We extend the Made-to-Measure method to an augmented phase-space including the metallicity of stars, and show its first ...
Matthieu Portail +4 more
semanticscholar +1 more source
Thick disk and pseudobulge formation in a clump cluster
EPJ Web of Conferences, 2012 Bulges in spiral galaxies have been supposed to be classified into two types: classical bulges or pseudobulges. Classical bulges are thought to form by galactic merger with bursty star formation, whereas pseudobulges are suggested to form by secular ...
Inoue S.
doaj +1 more source