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Pulsation in pre-main sequence stars

Published online by Cambridge University Press:  27 October 2016

Konstanze Zwintz
Konstanze Zwintz*
Affiliation:
Institute for Astro- and Particle Physics, University of Innsbruck Technikerstrasse 25/8, A-6020 Innsbruck, Austria email: [email protected]
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Abstract

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Asteroseismology has been proven to be a successful tool to unravel details of the internal structure for different types of stars in various stages of evolution well after birth. We can now show that it has similar power for pre-main sequence (pre-MS) objects. Pre-MS stars with masses between ~1 and 6 solar masses that have recently been formed and gain their energy mainly from gravitational contraction can become vibrationally unstable during their evolution to the main sequence. Within the past ~15 years, several dozens of pulsating pre-MS stars were discovered using data obtained from ground and from space. Depending on their masses, pre-MS stars can show three different types of pulsations: (i) δ Scuti type p-mode pulsations, (ii) γ Doradus like g-mode oscillations and (iii) g-mode Slowly Pulsating B star pulsations.

Our asteroseismic investigations yielded new insights into the connection between the pulsations and early stellar evolution: We revealed a relation between the stars' oscillatory behavior and their relative evolutionary stages that might lead us to a model-independent determination of the stars' fundamental parameters. With this we will be able to put constraints on theoretical models and help to answer some of the yet open questions in early stellar evolution.

Keywords

asteroseismologystars: early typestars: pre-main sequencestars: variables: δ Scutistars: oscillationsstars: fundamental parameters
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 552 - 559
Copyright
Copyright © International Astronomical Union 2016 

References

Baglin, A. 2006, in: Fridlund, M., Baglin, A., Lochard, J., & Conroy, L. (eds.), The CoRoT Mission, Pre-launch Status, Stellar Seismology and Planet Finding (ESASP 1306; Noordwijk, The Netherlands: ESA Publications Division)Google Scholar
Bouabid, M.-P., Montalban, J., Miglio, A., Dupret, M.-A., Grigahcène, A., & Noels, A. 2011, A&A, 531, 145 Google Scholar
Breger, M. 1972, ApJ, 171, 539 Google Scholar
Gruber, D., Saio, H., Kuschnig, R., et al. 2012, MNRAS, 420, 291 Google Scholar
Guenther, D. B. & Brown, K. I. T. 2003, ApJ, 600, 419 Google Scholar
Guenther, D. B., Kallinger, T., Zwintz, K., Weiss, W. W., & Tanner, J. 2007, ApJ, 671, 581 Google Scholar
Guzik, J. A., Kaye, A. B., Bradley, P., Cox, A. N., & Neuforge, C. 2000, ApJ, 542, 57 Google Scholar
Koch, D. G., Borucki, W. J., Basri, G., et al. 2010 2010, ApJ, 713, L79 Google Scholar
Kurtz, D. & Marang, F. 1995, MNRAS, 276, 191 Google Scholar
Marconi, M. & Palla, F. 1998, AJ, 507, 141 CrossRefGoogle Scholar
Rauer, H., Catala, C., Aerts, C., et al. 2014, Experimental Astronomy, 38, 249 Google Scholar
Ricker, G. R., Winn, J. N., Vanderspek, R., et al. 2014, in: Proceedings of the SPIE, Volume 9143, id. 914320Google Scholar
Ripepi, V., Cusano, F., de Criszenzo, M., et al. 2011, MNRAS, 416, 1535 Google Scholar
Samadi, R., Goupil, M.-J., Alecian, E., Baudin, F., Georgobiani, D., Trampedach, R., Stein, R., & Nordlund, A. 2005, Journal of Astrophysics and Astronomy, 26, 171 Google Scholar
Suran, M., Goupil, M., Baglin, A., Lebreton, Y., & Catala, C. 2001, A&A, 372, 233 Google Scholar
Walker, G. A. G., Matthews, J. M., Kuschnig, R., et al. 2003, PASP, 115, 1023 Google Scholar
Weiss, W. W., Rucinski, S. M., Moffat, A. F. J., et al. 2014, PASP, 126, 573 Google Scholar
Zwintz, K., Guenther, D. B., & Weiss, W. W. 2007, ApJ, 655, 342 CrossRefGoogle Scholar
Zwintz, K. 2008, ApJ, 673, 1088 Google Scholar
Zwintz, K., Fossati, L., Ryabchikova, A. et al. 2013, A&A, 550, 121 Google Scholar
Zwintz, K., Fossati, L., Ryabchikova, A. et al. 2014, Science, 345, 550 CrossRefGoogle Scholar