Results 11 to 20 of about 4,353 (224)
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.
Barbuy, Beatriz (6599216) +1 more
openaire +3 more sources
Dust properties in the Galactic bulge [PDF]
Astronomy & Astrophysics, 2013 It has been suggested that the ratio of total-to-selective extinction RV in dust in the interstellar medium differs in the Galactic bulge from its value in the local neighborhood. We attempt to test this suggestion. The mid-infrared hydrogen lines in 16 Galactic bulge PNe measured by the Spitzer Space Telescope are used to determine the extinction ...
Pottasch, S. R., Bernard-Salas, J.
openaire +5 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
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The chemical evolution of the Galactic Bulge seen through micro-lensing events [PDF]
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 +2 more sources
Comparing the Galactic Bulge and Galactic Disk Millisecond Pulsars [PDF]
, 2020 The Galactic Center Excess (GCE) is an extended gamma-ray source in the central region of the Galaxy found in Fermi Large Area Telescope (Fermi-LAT) data.
Ploeg, Harrison +7 more
core +1 more source
Infrared Scanning of the Galactic Bulge [PDF]
Symposium - International Astronomical Union, 1985 We find values of the interstellar absorption from J, H and K scans of a 6.8 × 200 arcmin strip of sky extending from the Sgr I field to the Galactic Centre. The visual absorption, excluding dark clouds, increases from 3 to 30 magnitudes in this region.
R. M. Catchpole +2 more
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Radio sources in the Chandra Galactic Bulge Survey [PDF]
, 2012 We discuss radio sources in the Chandra Galactic Bulge Survey region. By cross-matching the X-ray sources in this field with the NRAO VLA Sky Survey archival data, we find 12 candidate matches.
Maccarone, M.C. +24 more
core +1 more source
The UV spectrum of the Galactic Bulge [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractThe aim of this work is to investigate the possible existence of the UV-excess in the Milky Way bulge and its correlation with the presence of sdB stars in the bulge. The integrated spectrum of a bulge region from the UV to the optical was constructed.
Busso, Giorgia, Moehler, Sabine
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Globular Clusters in the Galactic Bulge [PDF]
Publications of the Astronomical Society of Australia, 2016 AbstractA view of the Galactic bulge by means of their globular clusters is fundamental for a deep understanding of its formation and evolution. Connections between the globular cluster and field star properties in terms of kinematics, orbits, chemical abundances, and ages should shed light on different stellar population components.
Bica, E., ORTOLANI, SERGIO, Barbuy, B.
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Hot Subdwarfs in the Galactic Bulge [PDF]
The Astrophysical Journal, 2005 Recent observations and theories suggest that extreme horizontal branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic Bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of
Busso, Giorgia +4 more
openaire +3 more sources