Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-01-13T12:04:08.710Z Has data issue: false hasContentIssue false
  • English
  • Français

A Galactic Population Census in Support of Astrometric Measurements

Published online by Cambridge University Press:  07 August 2017

M.A.C. Perryman
M.A.C. Perryman*
Affiliation:
Astrophysics Division, European Space Agency ESTEC, 2200AG Noordwijk, The Netherlands

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A galactic counterpart of the Sloan Digital Sky Survey, consisting of two dedicated 2–3-m class telescopes (one in each hemisphere), could provide precisely those stellar data necessary to complement the information furnished by a future astrometric space mission: in particular, an automated acquisition and analysis system could provide spectral types, metallicities, and radial velocities of several tens of millions of stars down to about 15–16 mag. Such a dedicated spectroscopic stellar survey would provide considerably more information about the details of the stellar distribution within our Galaxy than is known at present. It is suggested that a galactic version of the Sloan Digital Sky Survey, utilising the GSC-II as an observing list, and capitalising on recent developments in multi-fibre spectroscopic survey capabilities, would be a timely initiative.

Type
2. Current and Future Needs for Very Accurate Astrometry
Information
Symposium - International Astronomical Union , Volume 166: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry , 1995 , pp. 211 - 215
Copyright
Copyright © Kluwer 1995 

References

da Costa, G. (1994) in AAO Newsletter, No. 69.Google Scholar
Gunn, J.E., Knapp, G.R. (1993) The Sloan Digital Sky Survey, ASP Conference Series ‘Sky Surveys: Protostars to Protogalaxies’, vol. 43, Soifer, B.T. (ed.), p267.Google Scholar
Kurtz, M.J. (1991) The Need for Automation in the Reduction and Analysis of Stellar Spectra. IAU Transactions XXIB, 331.Google Scholar
Longair, M.S. (1993) A Survey of Surveys, ASP Conference Series ‘Sky Surveys: Protostars to Protogalaxies’, vol. 43, Soifer, B.T. (ed.), p313.Google Scholar
Mayor, M. et al. (1991) Radial Velocities for Stars of the Hipparcos Mission. IAU Highlights of Astronomy, 9, 433 Google Scholar
Taylor, K. (1994) in AAO Newsletter, No. 69.Google Scholar
Turon, C. et al. (1992) The Hipparcos Input Catalogue, ESA SP-1136.Google Scholar