Search: onr:"swepub:oai:lup.lub.lu.se:23376ea9-89c1-492e-b9ef-1ef32abbd1cc" >
Climbing the cosmic...
Climbing the cosmic ladder with stellar twins in RAVE with Gaia
-
- Jofré, P. (author)
- Diego Portales University,University of Cambridge
-
- Traven, G. (author)
- University of Ljubljana
-
- Hawkins, K. (author)
- Columbia University
-
show more...
-
- Gilmore, G. (author)
- University of Cambridge
-
- Sanders, J. L. (author)
- University of Cambridge
-
- Mädler, T. (author)
- University of Cambridge
-
- Steinmetz, M. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
-
- Kunder, A. (author)
- Leibniz Institute for Astrophysics Potsdam (AIP)
-
- Kordopatis, G. (author)
- Côte d'Azur Observatory
-
- McMillan, P. (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
-
- Bienaymé, O. (author)
- University of Strasbourg
-
- Bland-Hawthorn, J. (author)
- University of Sydney
-
- Gibson, B. K. (author)
- University of Hull
-
- Grebel, E. K. (author)
- Heidelberg University
-
- Munari, U. (author)
- University of Padova
-
- Navarro, J. E. J. Garcia (author)
- University of Victoria
-
- Parker, Q. A. (author)
- University of Hong Kong
-
- Reid, W. A. (author)
- Macquarie University, Sydney,Western Sydney University
-
- Seabroke, G. (author)
- University College London
-
- Zwitter, T. (author)
- University of Ljubljana
-
show less...
-
(creator_code:org_t)
- 2017-08-14
- 2017
- English 17 s.
-
In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 472:3, s. 2517-2533
- Related links:
-
http://dx.doi.org/10...
-
show more...
-
http://arxiv.org/pdf...
-
https://lup.lub.lu.s...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- We apply the twin method to determine parallaxes to 232 545 stars of the RAVE survey using the parallaxes of Gaia DR1 as a reference. To search for twins in this large data set, we apply the t-student stochastic neighbour embedding projection that distributes the data according to their spectral morphology on a two-dimensional map. From this map, we choose the twin candidates for which we calculate a χ2 to select the best sets of twins. Our results show a competitive performance when compared to other model-dependent methods relying on stellar parameters and isochrones. The power of the method is shown by finding that the accuracy of our results is not significantly affected if the stars are normal or peculiar since the method is model free. We find twins for 60 per cent of the RAVE sample that are not contained in Tycho-Gaia Astrometric Solution (TGAS) or that have TGAS uncertainties that are larger than 20 per cent. We could determine parallaxes with typical errors of 28 per cent. We provide a complementary data set for the RAVE stars not covered by TGAS, or that have TGAS uncertainties which are larger than 20 per cent, with model-free parallaxes scaled to the Gaia measurements.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- Methods:statistical
- Stars:distances
- Techniques:spectroscopic
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Jofré, P.
-
Traven, G.
-
Hawkins, K.
-
Gilmore, G.
-
Sanders, J. L.
-
Mädler, T.
-
show more...
-
Steinmetz, M.
-
Kunder, A.
-
Kordopatis, G.
-
McMillan, P.
-
Bienaymé, O.
-
Bland-Hawthorn, ...
-
Gibson, B. K.
-
Grebel, E. K.
-
Munari, U.
-
Navarro, J. E. J ...
-
Parker, Q. A.
-
Reid, W. A.
-
Seabroke, G.
-
Zwitter, T.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
- Articles in the publication
-
Monthly Notices ...
- By the university
-
Lund University