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The Physical Properties of Red Supergiants: Comparing Theory and Observations

Published online by Cambridge University Press:  01 December 2007

Philip Massey ,
Emily M. Levesque ,
Bertrand Plez  and
Knut A. G. Olsen
Philip Massey
Affiliation:
Lowell Observatory, 1400 W. Mars Hill Rd., Flagstaff, AZ 86001, USA email: [email protected]
Emily M. Levesque
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA email: [email protected]
Bertrand Plez
Affiliation:
GRAAL, Université Montpellier II, CNRS, 34095 Montpellier, France email: [email protected]
Knut A. G. Olsen
Affiliation:
Gemini Science Center, NOAO, P.O. Box 26732, Tucson, AZ 85726-6732, USA email: [email protected]
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Abstract

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Red supergiants (RSGs) are an evolved stage in the life of intermediate massive stars (≤ 25 M⊙). For many years, their location in the H-R diagram was at variance with the evolutionary models. Using the MARCS stellar atmospheres, we have determined new effective temperatures and bolometric luminosities for RSGs in the Milky Way, LMC, and SMC, and our work has resulted in much better agreement with the evolutionary models. We have also found evidence of significant visual extinction due to circumstellar dust. Although in the Milky Way the RSGs contribute only a small fraction (< 1%) of the dust to the interstellar medium (ISM), in starburst galaxies or galaxies at large look-back times, we expect that RSGs may be the main dust source. We are in the process of extending this work now to RSGs of higher and lower metallicities using the galaxies M31 and WLM.

Keywords

stars: atmospheres – circumstellar matter – stars: evolution – stars: late-type – stars: mass loss – supergiants
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S250: Massive Stars as Cosmic Engines , December 2007 , pp. 97 - 110
Copyright
Copyright © International Astronomical Union 2008

References

Abbott, D. C. & Hummer, D. G. 1985, ApJ, 294, 286CrossRefGoogle Scholar
Auer, L. H. & Mihalas, D. 1972, ApJS, 24, 193CrossRefGoogle Scholar
Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245CrossRefGoogle Scholar
Castor, J. I., Abbott, D. C., & Klein, R. I. 1975, ApJ, 195, 157Google Scholar
Conti, P. S. 1973, ApJ, 179, 181Google Scholar
Crowther, P. A. 2007, ARA&A, 45, 177Google Scholar
Elias, J. H., Frogel, J. A., & Humphreys, R. M. 1985, ApJS, 57, 91CrossRefGoogle Scholar
Freytag, B., Steffen, M., & Dorch, B. 2002, Astron. Nach., 323, 2133.0.CO;2-H>CrossRefGoogle Scholar
Gabler, R., Gabler, A., Kudritzki, R. P., et al. 1989, A&A, 226, 162Google Scholar
Garmany, C. D. & Stencil, R. E. 1992, A&AS, 94, 211Google Scholar
Gustafsson, B., Bell, R. A., Eriksson, K., & Nordlund, Å. 1975, A&A, 42, 407Google Scholar
Gustafsson, B., Edvardsson, B., Eriksson, , et al. 2003, in: Hubeny, I., Mihalas, D., & Werner, K. (eds.), Stellar Atmosphere Modeling (San Francisco: ASP), ASP Conf. Ser., 288, 331Google Scholar
Herrero, A., Puls, J., & Najarro, F. 2002, A&A, 396, 949Google Scholar
Hillier, D., Lanz, T., Heap, S. R., et al. 2003, ApJ, 588, 1039Google Scholar
Hillier, D. & Miller, D. L. 1989, ApJ, 496, 407Google Scholar
Humphreys, R. M. 1978, ApJS, 38, 309Google Scholar
Humphreys, R. M. 1979a, ApS, 39, 389Google Scholar
Humphreys, R. M. 1979b, ApJ, 345, 854CrossRefGoogle Scholar
Humphreys, R. M. 1980a, ApJ, 238, 65CrossRefGoogle Scholar
Humphreys, R. M. 1980b, ApJ, 241, 587Google Scholar
Humphreys, R. M. 1980c, ApJ, 241, 598Google Scholar
Humphreys, R. M. & Davidson, K. 1979, ApJ, 232, 409Google Scholar
Humphreys, R. M. & McElroy, D. B. 1984, ApJ, 284, 565Google Scholar
Humphreys, R. M. & Sandage, A. 1980, ApJS, 44, 319CrossRefGoogle Scholar
Jura, M. & Kleinmann, S. G. 1990, ApJS, 73, 769CrossRefGoogle Scholar
Kudritzki, R. P. 1976, A&A, 552, 11Google Scholar
Kudritzki, R. P. & Hummer, D. G. 1990, ARA&A, 28, 303Google Scholar
Lamers, H. J. G. L. M. 1997, in: Nota, A. & Lamers, H. J. G. L. M. (eds.), Luminous Blue Variables: Massive Stars in Transition, (San Francisco: ASP), ASP Conf. Ser, 120, 76Google Scholar
Levesque, E. M., Massey, P., Olsen, K. A. G., et al. 2005, ApJ, 628, 973Google Scholar
Levesque, E. M., Massey, P., Olsen, K. A. G., et al. . 2006, ApJ, 645, 1102CrossRefGoogle Scholar
Levesque, E. M., Massey, P., Olsen, K. A. G., & Plez, B. 2007, ApJ, 667, 202CrossRefGoogle Scholar
Maeder, A. & Meynet, G. 1987, A&A, 182, 243Google Scholar
Massey, P. 2003a, ARA&A, 41, 15Google Scholar
Massey, P. 2003b, in: Hucht, K. A. van der, Herrero, A. & Esteban, C. (eds.), A Massive Star Odyssey, from Main Sequence to Supernova (San Francisco: ASP), Proc. IAU Symp. 212, 316Google Scholar
Massey, P., Bresolin, F., Kudritzki, R. P., et al. 2004, ApJ, 608, 1001Google Scholar
Massey, P., Levesque, E. M., Olsen, K. A. G., et al. 2007, ApJ, 660, 301CrossRefGoogle Scholar
Massey, P., Levesque, E. M., & Plez, B. 2006, ApJ, 646, 1203CrossRefGoogle Scholar
Massey, P., & Olsen, K. A. G. 2003, AJ, 126, 2867Google Scholar
Massey, P., Plez, B., Levesque, E. M., et al. 2005b ApJ, 634, 1286Google Scholar
Massey, P., Puls, J., Pauldrach, A. W. A., et al. 2005a ApJ, 627, 477CrossRefGoogle Scholar
Meynet, G. & Maeder, A. 2000, A&A, 361, 101Google Scholar
Meynet, G. & Maeder, A. 2003, A&A, 404, 975Google Scholar
Meynet, G. & Maeder, A. 2005, A&A, 429, 581Google Scholar
Meynet, G., Maeder, A., Schaller, G., et al. 1994, A&A, 103, 97Google Scholar
Mihalas, D. & Auer, L. H. 1970, ApJ, 160, 1161CrossRefGoogle Scholar
Plez, B. 2003, in: Munari, U. (ed.), GAIA Spectroscopy: Science and Technology (San Francisco: ASP), ASP Conf. Ser., 298, 189Google Scholar
Plez, B., Brett, J. M., & Nordlund, Å. 1992, A&A, 256, 551Google Scholar
Puls, J., Kudritzki, R. P., Herrero, A., et al. 1996, A&A, 305, 171Google Scholar
Smartt, S. J., Crowther, P. A., Dufton, P. L., et al. 2001, MNRAS, 325, 257CrossRefGoogle Scholar
Smith, N., Humphreys, R. M., Davidson, K., et al. 2001, AJ, 121, 1111Google Scholar
Smith, N. & Owocki, S. P. 2006, ApJ, 645, 45CrossRefGoogle Scholar
Venn, K. A., McCarthy, J. K., Lennon, D. J., et al. 2000, ApJ, 541, 610CrossRefGoogle Scholar
Young, J. S., Baldwin, J. E., Boysen, R. C., et al. 2000, MNRAS, 315, 635Google Scholar
Zaritsky, D., Kennicutt, R. C., & Huchra, J. P. 1994, ApJ, 420 87CrossRefGoogle Scholar