Publication:
The S^(4)G perspective on circumstellar dust extinction of asymptotic giant branch stars in M100

Loading...
Thumbnail Image
Full text at PDC
Publication Date
2012-04-01
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Citations
Google Scholar
Research Projects
Organizational Units
Journal Issue
Abstract
We examine the effect of circumstellar dust extinction on the near-IR (NIR) contribution of asymptotic giant branch (AGB) stars in intermediate-age clusters throughout the disk of M100. For our sample of 17AGB-dominated clusters we extract optical-to-mid-IR spectral energy distributions (SEDs) and find that NIR brightness is coupled to the mid-IR dust emission in such a way that a significant reduction of AGB light, of up to 1 mag in the K band, follows from extinction by the dust shell formed during this stage. Since the dust optical depth varies with AGB chemistry (C-rich or O-rich), our results suggest that the contribution of AGB stars to the flux from their host clusters will be closely linked to the metallicity and the progenitor mass of the AGB star, to which dust chemistry and mass-loss rate are sensitive. Our sample of clusters-each the analogue of a similar to 1 Gyr old post-starburst galaxy-has implications within the context of mass and age estimation via SED modeling at high-z: we find that the average similar to 0.5 mag extinction estimated here may be sufficient to reduce the AGB contribution in the (rest-frame) K band from similar to 70%, as predicted in the latest generation of synthesis models, to similar to 35%. Our technique for selecting AGB-dominated clusters in nearby galaxies promises to be effective for discriminating the uncertainties associated with AGB stars in intermediate-age populations that plague age and mass estimation in high-z galaxies.
Description
© 2012. The American Astronomical Society. All rights reserved. Artículo firmado por 21 autores. S.E.M. thanks Arjen van der Wel for discussion and Angela Adamo and Anibal Garcia for their helpful comments on the manuscript. E.A. and A.B. thank the Centre National d'Etudes Spatiales for financial support.
Unesco subjects
Keywords
Citation
Boyer, M. L., Srinivasan, S., van Loon, J., et al. 2011, AJ, 142, 103 Bruzual, G. 2007, in IAU Symp. 241, Stellar Populations as Building Blocks of Galaxies, ed. A. Vazdekis & R. Peletier (Cambridge: Cambridge Univ. Press), 125 Bruzual, G., & Charlot, S. 2003, MNRAS, 344, 1000 Calzetti, D., Kennicutt, R. C., Engelbracht, C. W., et al. 2007, ApJ, 666, 870 Corbelli, E., Giovanardi, C., Palla, F., & Verley, S. 2011, A&A, 528, 116 Dale, D. A., Bendo, G. J., Engelbracht, C. W., et al. 2005, ApJ, 633, 857 Dale, D. A., Gil de Paz, A., Gordon, K. D., et al. 2007, ApJ, 655, 863 Fazio, G. G., Ashby, M. L. N., Barmby, P., et al. 2004, ApJS, 154, 39 Fellhauer, M., & Kroupa, P. 2005, ApJ, 630, 879 Ferraro, F. R., Fusi Pecci, F., Testa, V., et al. 1995, MNRAS, 272, 391 Freedman, W. L., Madore, B. F., Gibson, B. K., et al. 2001, ApJ, 553, 47 Gilkman, E., Helfand, D. J., White, R. L., et al. 2007, ApJ, 667, 673 Girardi, L., & Marigo, P. 2007, A&A, 462, 237 González Lopezlira, R. A., Bruzual, G., Charlot, S., Ballesteros Paredes, J., & Loinard, L. 2010, MNRAS, 403, 1213 Groenewegen, M. A. T. 2006, A&A, 448, 181 Groenewegen, M. A. T., Sloan, G. C., Soszynski, I., & Petersen, E. A. 2009, A&A, 506, 1277 Grosbol, P., & Dottori, H. 2011, in Stellar Clusters & Associations: A RIA Workshop on Gaia, ed. E. J. Alfaro Navarro, A. T. Gallego Calvente, & M. R. Zapatero Osorio, 123 (http://sca.iaa.es/content/proceedings) Holwerda, B. W., González, R. A., Allen, R. J., & van der Kruit, P. C. 2005, AJ, 129, 1396 Jackson, D. C., Skillman, E. D., Gehrz, R. D., Polomski, E., & Woodward, C. E. 2007, ApJ, 656, 818 Kastner, J. H., Thorndike, S. L., Romanczyk, P. A., et al. 2008, AJ, 136, 1221 Kennicutt, R. C., Jr., Armus, L., Bendo, G., et al. 2003, PASP, 115, 928 Kozlowski, S., & Kochanek, C. S. 2009, ApJ, 701, 508 Kriek, M., Labbé, I., Conroy, C., et al. 2010, ApJ, 722, L64 Lacy, M., Storrie-Lombardi, L. J., Sajina, A., et al. 2004, ApJS, 154, 166 Larsen, S. S. 2004, A&A, 416, 537 Maraston, C. 2005, MNRAS, 362, 799 Maraston, C., Daddi, E., Renzini, A., et al. 2006, ApJ, 652, 85 Marigo, P., Girardi, L., Bressan, A., et al. 2008, A&A, 482, 883 Matsuura, M., Barlow, M. J., Zijlstra, A. A., et al. 2009, MNRAS, 396, 918 Meidt, S. E., Schinnerer, E., Knapen, J. H., et al. 2012, ApJ, 744, 17 Mouhcine, M. 2002, A&A, 394, 125 Mouhcine, M., & Lançon, A. 2002, A&A, 393, 149 Moustakas, J., Kennicutt, R. C., Tremonti, C. A., et al. 2010, ApJS, 190, 233 Nowotny, W., Aringer, B., Hoefner, S., & Lederer, M. T. 2011, A&A, 529, 129 Pégourié, B. 1988, A&A, 194, 335 Reach, W. T., Megeath, S. T., Cohen, M., et al. 2005, PASP, 117, 978 Sanders, D. B., Salvato, M., Aussel, H., et al. 2007, ApJS, 172, 86S Sargent, B. A., Srinivasan, S., & Meixner, M. 2011, ApJ, 728, 93 Sargent, B. A., Srinivasan, S., Meixner, M., et al. 2010, ApJ, 716, 878 Sheth, K., et al. 2010, PASP, 122, 1397 Srinivasan, S., Meixner, M., Leitherer, C., et al. 2009, AJ, 137, 4810 Srinivasan, S., Sargent, B., & Meixner, M. 2011, A&A, 532, A54 Suh, K.-W. 2000, MNRAS, 315, 740 Trancho, G., Bastian, N., Miller, B. W., & Schweizer, F. 2007, ApJ, 664, 284 van der Wel, A., Franx, M., Wuyts, S., et al. 2006, ApJ, 652, 97 van Loon, J. T., Marshall, J. R., & Zijlstra, A. A. 2005, A&A, 442, 597
Collections