Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-28T20:39:12.918Z Has data issue: false hasContentIssue false
  • English
  • Français

Characteristics and Space Distribution of Stars in the Bulge of the Milky Way

Published online by Cambridge University Press:  23 September 2016

Jay A. Frogel
Jay A. Frogel*
Affiliation:
Kitt Peak National Observatory, National Optical Astronomy Observatories, P. O. Box 26732, Tucson, AZ 85726

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.

Stars in Baade's Window at b = −4° are described. They are old, metal rich, and have a velocity dispersion greater than 100 km/sec. Their colors are unlike those of any other group of stars. Stars in other windows between b = −3 and −12° differ systematically from those in Baade's Window. The differences are best understood if they are caused by a metallicity gradient in the bulge. The distribution of surface brightness or surface density over the bulge has a much steeper falloff than that seen in other galaxies or in the very center of the Milky Way itself. It is now possible to link together stars in the immediate vicinity of the nucleus with those that are several hundred parsecs out. Understanding this linkage will help in understanding the history and evolution of stars throughout the bulge and that part of the inner disk with which it overlaps.

Type
The Galactic Bulge
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 55 - 62
Copyright
Copyright © Kluwer 1989 

References

Arimoto, N., and Yoshii, Y. 1987, Astr. Ap. , 173, 23.Google Scholar
Armandroff, T. 1988, A. J. , in press.Google Scholar
Baade, W. 1963, in Evolution of Stars and Galaxies , ed. Gaposhkin, C. P. (Cambridge: Harvard University Press), p. 279.Google Scholar
Bahcall, J. N. 1986, Ann. Rev. Astr. Ap. , 24, 577.Google Scholar
Bahcall, J. N., Soneira, R. M., Morton, D. C., and Tritton, K. P. 1983 Ap. J. , 272, 627.Google Scholar
Becklin, E. E., and Neugebauer, G. 1968, Ap. J. , 151, 145.Google Scholar
Blanco, V. M. 1988, A. J. , 95, 1400.Google Scholar
Blanco, V. M., McCarthy, M. F., and Blanco, B. M. 1984, A. J. , 89, 636.CrossRefGoogle Scholar
Cook, K. H. 1987, Ph.D. thesis, Univ. of Arizona.Google Scholar
Freeman, K. C., 1986, in Stellar Populations , ed. Norman, C. A., Renzini, A., and Tosi, M. (Cambridge: Cambridge Univ. Press), p. 227.Google Scholar
Freeman, K. C., 1987, Ann. Rev. Astr. Ap. , 25, 603.Google Scholar
Freeman, K. C., de Vaucouleurs, G., de Vaucouleurs, A., and Wainscoat, R. J. 1988, Ap. J. , 325, 563.Google Scholar
Frogel, J. A. 1988, Ann. Rev. Astr. Ap. , 26, in press.Google Scholar
Frogel, J. A., Terndrup, D. M., and Whitford, A. E. 1988, Ap. J. in preparation.Google Scholar
Frogel, J. A., and Whitford, A. E. 1987, Ap. J. , 320, 199.Google Scholar
Glass, I. S. 1986, M.N.R.A.S. , 221, 879.CrossRefGoogle Scholar
Glass, I. S., Catchpole, R. M., and Whitelock, P. A. 1987, M.N.R.A.S. , 227, 373.CrossRefGoogle Scholar
Hesser, J. E., Harris, W. E., VandenBerg, D. A., Allwright, J. W. B., Shott, P., and Stetson, P. B. 1987, Pub. A. S. P. , 99, 739.Google Scholar
Kent, S. M. 1986, A. J. , 91, 1301.Google Scholar
Kent, S. M. 1987, A. J. , 93, 816.CrossRefGoogle Scholar
Kinman, T. D., Feast, M. W., and Lasker, B. M. 1988, A. J. , 95, 804.CrossRefGoogle Scholar
Lebofsky, M. J., and Rieke, G. H. 1987, in AIP Conference Proceedings No. 155, The Galactic Center , ed. Backer, D. C., p. 79.Google Scholar
Lewis, J. R., and Freeman, K. C. 1988, A. J. , in press.Google Scholar
McGinn, M. T., Sellgren, K., Becklin, E. E., and Hall, D. N. B. 1988, A. J. , in press.Google Scholar
Mould, J. R. 1983, Ap. J. , 266, 255.Google Scholar
Mould, J.R., and McElroy, D. B. 1978, Ap. J. , 221, 580.Google Scholar
Nassau, J. J., and Blanco, V. M. 1958, Ap. J. , 128, 46.Google Scholar
Oort, J. H. 1977, Ann. Rev. Astr. Ap. , 15, 295.Google Scholar
Rich, R. M. 1985, Mem. Soc. Astr. Italiana , 56, 23.Google Scholar
Rich, R. M. 1986, Ph.D. thesis, Caltech.Google Scholar
Rich, R. M. 1988, A. J. , 95, 828.Google Scholar
Rieke, G. H., and Lebofsky, M. J. 1987, in AIP Conference Proceedings No. 155, The Galactic Center , ed. Backer, D. C., p. 71.Google Scholar
Rieke, G. H., and Rieke, M. J. 1988, Ap. J. (Letters) , 330, L33.Google Scholar
Rodgers, A. W., Harding, P., and Ryan, S. 1986, A. J. , 92, 600.Google Scholar
Sandage, A. 1986, Ann. Rev. Astr. Ap. , 24, 421.CrossRefGoogle Scholar
Terndrup, D. M. 1988, A. J. , in press.Google Scholar
Terndrup, D. M., Frogel, J. A., and Whitford, A. E. 1988, in preparation.Google Scholar
van der Kruit, P. C., and Searle, L. 1981, Astr. Ap. , 95, 105.Google Scholar
Whitelock, P., Feast, M. W., and Catchpole, R. 1986, M.N.R.A.S. , 222, 1.Google Scholar
Whitford, A. E. 1978, Ap. J. , 226, 777.Google Scholar
Whitford, A. E. 1986, in Spectral Evolution of Galaxies , ed. Chiosi, C. and Renzini, A. (Dordrecht: Reidel), p. 157.Google Scholar
Whitford, A. E., and Rich, R. M. 1983, Ap. J. , 274, 723.Google Scholar
Zinn, R. 1985, Ap. J. , 293, 424.Google Scholar