The Gaia-ESO Survey: a quiescent Milky Way with no significant dark/stellar accreted disc★
نویسندگان
چکیده
منابع مشابه
Gaia: Origin and Evolution of the Milky Way
GAIA is a short-listed candidate for the ESA Cornerstone mission C5, meeting the ESA Survey Committee requirement for an observatory mission, dedicated to astrometry, providing 10 micro-arcsecond accuracy at 15th magnitude. The GAIA mission concept follows the dramatic success of the ESA HIPPARCOS mission, utilising a continuously scanning spacecraft, accurately measuring 1-D coordinates along ...
متن کاملThe Gaia-ESO Survey: processing of the FLAMES-UVES spectra
The Gaia-ESO Survey is a large public spectroscopic survey that aims to derive radial velocities and fundamental parameters of about 105 Milky Way stars in the field and in clusters. Observations are carried out with the multi-object optical spectrograph FLAMES, using simultaneously the medium resolution (R∼20,000) GIRAFFE spectrograph and the high resolution (R∼47,000) UVES spectrograph. In th...
متن کاملThe Disc Origin of the Milky Way Bulge
The Galactic bulge, that is the prominent out-of-plane over-density present in the inner few kiloparsecs of the Galaxy, is a complex structure, as the morphology, kinematics, chemistry, and ages of its stars indicate. To understand the nature of its main components—those at [Fe/H] −1 dex—it is necessary to make an inventory of the stellar populations of the Galactic disc(s), and of their border...
متن کاملPhase models of the Milky Way stellar disc
We present a new iterative method for constructing equilibrium phase models of stellar systems. Importantly, this method can provide phase models with arbitrary mass distributions. The method is based on the following principle. Our task is to generate an equilibrium N-body system with a given mass distribution. For this purpose, we let the system reach equilibrium through its dynamical evoluti...
متن کاملGAIA Galaxy Survey: a multi-colour galaxy survey with GAIA
The performance expected from a galaxy survey to be carried out with GAIA, the GAIA Galaxy Survey, is outlined. From a statistical model of galaxy number density, size and surface brightness distribution, and from detailed numerical simulations based on real images, it is conservatively estimated that GAIA would be able to detect and observe about 3 million galaxies brighter than V ≃ 17 and to ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2015
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/stv807