Переслане повідомлення
Від: "Erik Høg"
Кому: "Tansel Ak" , "Nils O. Andersen" , "Selcuk Bilir" , "Anthony Brown" , "Andrew Cooper" , "Claus Fabricius" , "Amina Helmi" , "Carme Jordi" , "Michael Perryman" , "Matthias Steinmetz" , "Max Palmer" , "Hans Zinnecker" , "Mattia Vaccari" , "Coryn Bailer-Jones" , "Johan NBI, Fynbo" , "Carine Babusiaux" , "Lennart Lindegren" , "Uli Bastian" , "Kasper Elm Heintz" , "Xavier Luri" , "Francois Mignard" , "Nicholas Walton" , "Valeri V. priv. Makarov" , "Jean Kovalevsky" , "George Kaplan" , "Dave Monet" , "Norbert Zacharias" , "Ron Ekers" , "Richard Davies - MPE" , "Rodrigo Ibata" , "Edward van den Heuvel" , "Fabien Malbet" , "Knude Jens" , "Jørgen Otzen Petersen" , "Giuseppe Sarri" , "Jos de Bruijne" , "Timo Prusti" , "yatskiv" , "Gennady Pinigin" , "Christoffer Karoff" , "Troels Haugbølle"
Надіслано: Понеділок, 16 Лютий 2015 р 16:18:19
Тема: Absolute astrometry in the next 50 years
Dear colleagues,
Herewith a link to the new version of my report with updates from the last three months, scheduled to be announced at Tue, 17 Feb 2015 01:00:00 GMT.
Høg E. 2015, Absolute astrometry in the next 50 years. Draft
report with updates until
15 February 2015.
arxiv.org/abs/1408.2190
I thank you for information and discussion and I invite your comments and contributions:
Most
needed now is to discuss: Calibration of photometric
distances for RGB stars on p.4-5; science cases where the
high-resolution photometry is essential, e.g. double stars and compact objects,
p.8; common proper motion pairs, draft
on p. 13. – You are kindly invited to continue.
A two-page overview is here:
Høg E. 2014a, The Astrometric Foundation of Astrophysics. Abstract
to the Conference Book 2014 of the Danish
Astronomical Society and abstract of a review presentation.
arxiv.org/abs/1408.2122
With best regardsd
Erik
Erik Høg
+45 44492008
New email in Feb. 2014:
Ця електронна адреса захищена від спам-ботів. вам потрібно увімкнути JavaScript, щоб побачити її.
ABSTRACT: With
Gaia in orbit since December 2013 it is time to look at the future of
fundamental astrometry and a time frame of 50 years is needed in this
matter. A successsor for Gaia would be more powerful if
designed for launch with Ariane 6. A dozen science
issues for a Gaia successor mission in twenty years are presented and in this
context the possibilities for absolute astrometry with milliarcsecond (mas) or
sub-mas accuracies are discussed. The three powerful techniques: VLBI, the
MICADO camera on the E-ELT, and the LSST are described and documented by
literature references and by an extensive correspondence with leading
astronomers who readily responded with all the information I needed. In brief,
the two Gaia-like missions would provide an astrometric foundation for all
branches of astronomy from the solar system and stellar systems, including
exo-planet systems, to compact galaxies, quasars and dark matter (DM) substructures
by data which cannot be surpassed in the next 50 years.
