Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'504'585
Articles rated: 2609

25 April 2024

» arxiv » 1107.1256

Article overview

Distance determination for RAVE stars using stellar models III: The nature of the RAVE survey and Milky Way chemistry
B. Burnett ; J. Binney ; S. Sharma ; M. Williams ; T. Zwitter ; O Bienayme ; J. Bland-Hawthorn ; K.C. Freeman ; J. Fulbright ; B. Gibson ; G. Gilmore ; E.K. Grebel ; A. Helmi ; U. Munari ; J.F. Navarro ; Q.A. Parker ; G.M. Seabroke ; A. Siebert ; A. Siviero ; M Steinmetz ; F.G. Watson ; R.F.G. Wyse ;
Date:	6 Jul 2011
Abstract:	We apply the method of Burnett & Binney (2010) for the determination of stellar distances and parameters to the internal catalogue of the Radial Velocity Experiment (Steinmetz et al. 2006). Subsamples of stars that either have Hipparcos parallaxes or belong to well-studied clusters, inspire confidence in the formal errors. Distances to dwarfs cooler than ~6000 K appear to be unbiased, but those to hotter dwarfs tend to be too small by ~10% of the formal errors. Distances to giants tend to be too large by about the same amount. The median distance error in the whole sample of 216,000 stars is 28% and the error distribution is similar for both giants and dwarfs. Roughly half the stars in the RAVE survey are giants. The giant fraction is largest at low latitudes and in directions towards the Galactic Centre. Near the plane the metallicity distribution is remarkably narrow and centred on [M/H]-0.04 dex; with increasing \|z\| it broadens out and its median moves to [M/H] ~ -0.5. Mean age as a function of distance from the Galactic centre and distance \|z\| from the Galactic plane shows the anticipated increase in mean age with \|z\|.
Source:	arXiv, 1107.1256
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap