Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-26T03:12:54.144Z Has data issue: false hasContentIssue false
  • English
  • Français

The Galactic Bulge and the Thick Disc

Published online by Cambridge University Press:  07 August 2017

M. W. Feast ,
P. A. Whitelock  and
R. Sharples
M. W. Feast
Affiliation:
South African Astronomical Observatory
P. A. Whitelock
Affiliation:
South African Astronomical Observatory
R. Sharples
Affiliation:
University of Durham UK

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.

The large reported discrepancy between the scale height in the Galactic Bulge for objects such as RR Lyrae variables on the one hand and M-giants or IRAS sources on the other is primarily due to these scale heights being determined at different mean galactocentric distances. Mira variables apparently provide a Bulge-like population in the solar vicinity and show that the thick disc consists of a number of subsystems. There are M-giants in the extended solar neighbourhood, away from the Galactic plane, which seem similar to M-giants in the Bulge. Photometric and kinematic studies on some of these stars are in progress.

Type
I. The Stellar Populations in the Milky Way
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 77 - 79
Copyright
Copyright © Kluwer 

References

Blanco, V.M. (1988) A. J. , 95, 1400–1403.CrossRefGoogle Scholar
Feast, M.W. (1989) ‘Mira Variables, Stellar Evolution and Galactic Structure’, in Schmidt, E. G. (ed.), The Use of Pulsating Stars in Fundamental Problems of Astronomy , IAU Colloq. 111, Cambridge University Press, pp. 205–213.Google Scholar
Feast, M.W., Whitelock, P.A. & Carter, B.S. (1990) M.N.R.A.S. , 247, 227–236.Google Scholar
Frogel, J.A. & Whitford, A.E. (1987) Ap. J. , 320, 199–237.Google Scholar
Harmon, R. & Gilmore, G. (1988) M.N.R.A.S. , 235. 1025–1047.CrossRefGoogle Scholar
Lloyd Evans, T. (1976) M.N.R.A.S. , 174, 169–184.CrossRefGoogle Scholar
Oort, J.H. & Plaut, L. (1975) Astr. Ap. , 41, 71–86.Google Scholar
Stephenson, C.B. (1986) Ap. J. , 301, 927–937.Google Scholar
Terndrup, D.M., Frogel, J.A. & Whitford, A.E. (1990) Ap. J. , 357, 453–476.CrossRefGoogle Scholar
de Vaucouleurs, G. & Pence, W.D. (1978) A. J. , 83, 1163–1173.Google Scholar
Wesselink, T.J.H. (1987) .Google Scholar
Whitelock, P.A. (1991) This volume.Google Scholar
Whitelock, P.A., Feast, M.W. & Catchpole, R.M. (1991) M.N.R.A.S. , 248, 276–312.CrossRefGoogle Scholar