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Long-period variables and carbon stars in the Galactic Bulge

Published online by Cambridge University Press:  07 August 2017

Patricia Whitelock
Patricia Whitelock*
Affiliation:
South African Astronomical Observatory, P O Box 9, Observatory, Cape 7935, South Africa October 12, 1992

Abstract

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The review covers the properties of red variables in globular clusters and the Galactic Bulge. Details are given of our current understanding of the Mira evolutionary phase. There is evidence that Miras in the LMC and the Bulge occupy different parts of the instability strip but obey the same PLC relation. The Bulge contains at least 2 × 104 Miras of which 100 or so have luminosities in excess of Mbol = — 5 mag. The Mira phase lasts more than 105 yr. These objects originate from stars with a wide range of metallicity, but it is currently unclear if the most metal-rich stars reach the top of the AGB to become Miras. Preliminary data suggest that the distribution of the Miras along the minor axis of the Bulge is different from that of the late-M stars but similar to the 2.4 μm luminosity.

Our knowledge of the Bulge carbon stars is briefly reviewed. It is suggested that, by analogy with the carbon-rich dwarfs, these stars are probably best understood as the products of binary evolution.

Keywords

Galactic BulgeMira VariablesLPVsIRAS sourcesCarbon StarsMetallicity Gradients
Type
Invited Reviews
Information
Symposium - International Astronomical Union , Volume 153: Galactic Bulges , 1993 , pp. 39 - 56
Copyright
Copyright © Kluwer 1993 

References

Azzopardi, M., Lequeux, J. & Rebeirot, E.: 1988, Astron. Astrophys., 202, L27 Google Scholar
Azzopardi, M., Lequeux, J., Rebeirot, E. & Westerlund, B. E.: 1991, Astron. Astrophys. Suppl., 88, 265 Google Scholar
Binney, J., Gerhard, O. E., Stark, A. A., Bally, J. & Uchida, K. I.: 1991, Mon. Not. R. astr. Soc., 252, 210 CrossRefGoogle Scholar
Blanco, V. M.: 1988, Astronom. J., 95, 1400 Google Scholar
Blanco, V. M. & Terndrup, D. M.: 1989, Astronom. J., 98, 843 Google Scholar
Blommaert, J. A. D. L.: 1992, , Google Scholar
Blommaert, J. A. D. L., van Langevelde, H. J., Habing, H. J., van der Veen, W. E. C. J. & Epchtein, N.: 1992, in Variable Stars and Galaxies, ASP conf. ser. 30, ed., Warner, B., in press Google Scholar
Catchpole, R. M., Robertson, B. S. C., Lloyd Evans, T. H. H., Feast, M. W., Glass, I. S. & Carter, B. S.: 1979, SAAO circ., 1, 61 Google Scholar
Catchpole, R. M., Whitelock, P. A. & Glass, I. S.: 1990, Mon. Not. R. astr. Soc., 247, 479 Google Scholar
Dickens, R. J.: 1989, in The Use of Pulsating Stars in Fundamental Problems of Astronomy, IAU Coll 111, ed., Schmidt, E. G., Cambridge Univ. Press, p. 141 Google Scholar
Dominy, J. F.: 1984, Astrophys. J. Suppl., 55, 27 CrossRefGoogle Scholar
Feast, M. W.: 1981, in Physical Processes in Red Giants, eds., Iben, I. & Renzini, A., Reidel, p. 193 Google Scholar
Feast, M. W.: 1984, Mon. Not. R. astr. Soc., 211, 51P CrossRefGoogle Scholar
Feast, M. W.: 1986, in Light on Dark Matter, ed., Israel, F. P., Reidel, p. 339 Google Scholar
Feast, M. W.: 1987, in The Galaxy, eds., Gilmore, G. & Carswell, B., Reidel, p. 1 Google Scholar
Feast, M. W.: 1989, in The Use of Pulsating Stars in Fundamental Problems of Astronomy, IAU Coll 111, ed., Schmidt, E. G., Cambridge Univ. Press, p. 205 Google Scholar
Feast, M. W. & Whitelock, P. A.: 1987, in Late Stages of Stellar Evolution, eds., Kwok, S. & Pottasch, S.R.. Reidel, p. 33 Google Scholar
Feast, M. W., Whitelock, P. A. & Sharpies, R.: 1992, in The Stellar Populations of Galaxies, IAU Sym. 149, eds., Barbuy, B. & Renzini, A., Kluwer, p. 77 Google Scholar
Feast, M. W., Glass, I. S., Whitelock, P. A. & Catchpole, R. M.: 1989, Mon. Not. R. astr. Soc., 241, 375 Google Scholar
Frogel, J. A., Terndrup, D., Blanco, V. M. & Whitford, A. E.: 1990, Astrophys. J., 353, 494 Google Scholar
Gatewood, G.: 1592, Publ. Astronom. Soc. Pacif., 104, 23 CrossRefGoogle Scholar
Glass, I. S.: 1986, Mon. Not. R. astr. Soc., 221, 879 Google Scholar
Green, P. J., Margon, B. & MacConnell, D. J.: 1991, Astrophys. J., 380, L31 Google Scholar
Greggio, L. & Renzini, A.: 1990, Astrophys. J., 364, 35 Google Scholar
Grenon, M.: 1990, in Bulges of Galaxies, ESO-CTIO Workshop, eds., Jarvis, B. J. & Terndrup, D. M., ESO, p. 143 Google Scholar
Horch, E., Demarque, P. & Pinsonneault, M.: 1992, Astrophys. J., 388, L53 Google Scholar
IRAS Point Source Catalogue: 1985, US Government Publication Office Google Scholar
Jura, M. & Kleinmann, S G.: 1992, Astrophys. J. Suppl., 79, 105 CrossRefGoogle Scholar
Kent, S. M., Dame, T. M. & Fazio, G.: 1991, Astrophys. J., 378, 131 Google Scholar
Livio, M.: 1992, in Planetary Nebulae, IAU Sym. 155, eds., Weinberger, R. & Acker, A., Kluwer, in press Google Scholar
Lloyd Evans, T.: 1976, Mon. Not. R. astr. Soc., 174, 169 Google Scholar
Lloyd Evans, T.: 1992, Mon. Not. R. astr. Soc., submitted Google Scholar
Menzies, J. W.: 1990, in Bulges of Galaxies, ESO-CTIO Workshop, eds., Jarvis, B. J. & Terndrup, D. M., ESO, p. 115 Google Scholar
Menzies, J. W. & Whitelock, P. A.: 1985, Mon. Not. R. astr. Soc., 212, 783 Google Scholar
Plaut, L.: 1971, Astron. Astrophys. Suppl., 4, 75 Google Scholar
Renzini, A. & Buzzoni, A.: 1986, in Spectral Evolution of Galaxies, eds., Chiosi, C. & Renzini, A., Reidel, p. 195 CrossRefGoogle Scholar
Renzini, A. & Greggio, L.: 1990, in Bulges of Galaxies, ESO-CTIO Workshop, eds., Jarvis, B. J. & Terndrup, D. M., ESO, p. 47 Google Scholar
Rich, R. M.: 1988, Astronom. J., 95, 828 Google Scholar
Robertson, B. S. C. & Feast, M. W.: 1981, Mon. Not. R. astr. Soc., 196, 111 Google Scholar
te Lintel Hekkert, P.: 1990, , Google Scholar
Terndrup, D. M.: 1988, Astronom. J., 96, 884 Google Scholar
Terzan, A. & Ounnas, Ch.: 1988, Astron. Astrophys. Suppl., 76, 205 Google Scholar
Tyson, N. D.: 1992, in Variable Stars and Galaxies, ASP conf. ser. 30, ed., Warner, B., in press Google Scholar
Tyson, N. D. & Rich, R. M.: 1991, Astrophys. J., 367, 547 Google Scholar
van den Bergh, S. & Herbst, E.: 1974, Astronom. J., 79, 603 Google Scholar
van Langevelde, H. J., van der Heiden, R., van Schooneveld, C.: 1990, Astron. Astrophys., 239, 193 Google Scholar
Walker, A. R.: 1992, Astrophys. J., 390, L81 Google Scholar
Walker, A. R, & Terndrup, D. M.: 1991, Astrophys. J., 378, 119.Google Scholar
Wesselink, Th.: 1987, , Google Scholar
Westerlund, B. E., Lequeux, J., Azzopardi, M. & Rebeirot, E.: 1991, Astron. Astrophys., 244, 367 Google Scholar
Whitelock, P. A.: 1990, in Confrontation Between Stellar Pulsation and Evolution, eds., Cacciari, C. & Clementini, G., ASP Conf. Ser. 11, p. 365 Google Scholar
Whitelock, P. A.: 1992, in Variable Stars and Galaxies, ASP conf. ser. 30, ed., Warner, B., in press Google Scholar
Whitelock, P. A. & Catchpole, R. M.: 1992, in The Center, Bulge and Disk of the Milky Way, Ed Blitz, L., Kluwer, in press Google Scholar
Whitelock, P. A. & Feast, P. A.: 1992, in Planetary Nebulae, IAU Sym. 155, eds., Weinberger, R. & Acker, A., Kluwer, in press Google Scholar
Whitelock, P. A., Feast, M. W. & Catchpole, R. M.: 1986, Mon. Not. R. astr. Soc., 221, 1 Google Scholar
Whitelock, P. A., Feast, M. W. & Catchpole, R. M.: 1991, Mon. Not. R. astr. Soc., 248, 276, (WFC) Google Scholar
Wood, P. R., Moore, G. K. G. & Hughes, S. M. G.: 1991, in The Magellanic Clouds, IAU Sym. 148, ed(s)., Haynes, R. & Milne, D., Kluwer, 259 Google Scholar