Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-19T04:01:34.376Z Has data issue: false hasContentIssue false
  • English
  • Français

Stellar granulation and interferometry

Published online by Cambridge University Press:  10 September 2015

A. Chiavassa  and
L. Bigot
A. Chiavassa
Affiliation:
Laboratoire Lagrange, UMR 7293, CNRS, Observatoire de la Côte d*Azur, Université de Nice Sophia-Antipolis, Nice, France
L. Bigot
Affiliation:
Laboratoire Lagrange, UMR 7293, CNRS, Observatoire de la Côte d*Azur, Université de Nice Sophia-Antipolis, Nice, France
Get access

Abstract

Stars are not smooth. Their photosphere is covered by a granulation pattern associated with the heat transport by convection. The convection-related surface structures have different size, depth, and temporal variations with respect to the stellar type. The related activity (in addition to other phenomena such as magnetic spots, rotation, dust, etc.) potentially causes bias in stellar parameters determination, radial velocity, chemical abundances determinations, and exoplanet transit detections.

The role of long-baseline interferometric observations in this astrophysical context is crucial to characterize the stellar surface dynamics and correct the potential biases. In this Chapter, we present how the granulation pattern is expected for different kind of stellar types ranging from main sequence to extremely evolved stars of different masses and how interferometric techniques help to study their photospheric dynamics.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 70: What the Highest Angular Resolution Can Bring to Stellar Astrophysics? , 2014 , pp. 151 - 175
Copyright
© EAS, EDP Sciences, 2015

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Abramowitz, M., Stegun, I.A., 1972, Handbook of Mathematical Functions (New York: Dover, 1972)Google Scholar
Asplund, M., Grevesse, N., Sauval, A.J., & Scott, P., 2009, A&AR, 47, 481
Berger, J.-P., Malbet, F., Baron, F., et al., 2012, A&AR, 20, 53
Berio, P., Merle, T., Thévenin, F., et al., 2011, A&A, 535, A59
Bigot, L., Mourard, D., Berio, P., et al., 2011, A&A, 534, L3
Bigot, L., et al., 2015, A&A, in preparation
Born, M., & Wolf, E., 1999, Principles of Optics, by Max Born., & Emil Wolf and With contributions by Bhatia, A.B., Clemmow, P.C., Gabor, D., Stokes, A.R., Taylor, A.M., Wayman, P.A., & Wilcock, W.L., pp. 986, ISBN 0521642221 (Cambridge, UK: Cambridge University Press, October 1999)CrossRefGoogle Scholar
Carlsson, M., Stein, R.F., Nordlund, A&A, & Scharmer, G.B., 2004, ApJ, 610, L137CrossRef
Casagrande, L., Portinari, L., Glass, I.S., et al., 2014, MNRAS, 439, 2060CrossRef
Chiavassa, A., Plez, B., Josselin, E., & Freytag, B., 2009, A&A, 506, 1351
Chiavassa, A., Lacour, S., Millour, F., et al., 2010a, A&A, 511, A51
Chiavassa, A., Haubois, X., Young, J.S., et al., 2010b, A&A, 515, A12
Chiavassa, A., Collet, R., Casagrande, L., & Asplund, M., 2010c, A&A, 524, A93
Chiavassa, A., Pasquato, E., Jorissen, A., et al., 2011a, A&A, 528, A120
Chiavassa, A., Freytag, B., Masseron, T., & Plez, B., 2011b, A&A, 535, A22
Chiavassa, A., Bigot, L., Kervella, P., et al., 2012, A&A, 540, A5
Chiavassa, A., Ligi, R., Magic, Z., et al., 2014, A&A, 567, A115
Chiavassa, A., & Freytag, B., 2014 [arXiv:1410.3868]
Dawes, W.R., 1864, MNRAS, 24, 161
Dravins, D., 1987, A&A, 172, 211
Freytag, B., 2001, 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, 223, 785
Freytag, B., & Hoefner, S., 2008, A&A, 483, 571
Freytag, B., Steffen, M., Ludwig, H.-G., et al., 2012, J. Comput. Phys., 231, 919CrossRef
Gray, D.F., 2005, “The Observation and Analysis of Stellar Photospheres, 3rd edition, ed. Gray, D.F., ISBN: 0521851866CrossRefGoogle Scholar
Gustafsson, B., Edvardsson, B., Eriksson, K., et al., 2008, A&A, 486, 951
Hall, J.C., 2008, Liv. Rev. Solar Phys., 5, 2
Herschel, W., 1801, R. Soc. London Phil. Trans. Ser. I, 91, 265CrossRef
Le Bouquin, J.-B., & Absil, O., 2012, A&A, 541, A89
Ludwig, H.-G., Jordan, S., & Steffen, M., 1994, A&A, 284, 105
Ludwig, H.-G., Caffau, E., Steffen, M., et al., 2009, Mem. Soc. Astron. Ital., 80, 711
Magic, Z., Collet, R., Asplund, M., et al., 2013, A&A, 557, A26
Magic, Z., & Asplund, M., 2014 [arXiv:1405.7628]
Malbet, F., Cotton, W., Duvert, G., et al., 2010, SPIE, 7734
Mérand, A., Kervella, P., Barban, C., et al., 2010, A&A, 517, A64
Monnier, J.D., 2003, Reports Progr. Phys., 66, 789CrossRef
Monnier, J.D., 2007, New Astron. Rev., 51, 604CrossRef
Nordlund, A., 1982, A&A, 107, 1PubMed
Nordlund, A., & Dravins, D., 1990, A&A, 228, 155
Nordlund, Å., Stein, R.F., & Asplund, M., 2009, Liv. Rev. Solar Phys., 6, 2
Richichi, A., Percheron, I., & Khristoforova, M., 2005, A&A, 431, 773
Samadi, R., Belkacem, K., Ludwig, H.-G., et al., 2013, A&A, 559, A40
Stein, R.F., & Nordlund, Å., 1998, ApJ, 499, 914CrossRef
Svensson, F., & Ludwig, H.-G., 2005, 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, 560, 979
Vögler, A., Bruls, J.H.M.J., & Schüssler, M., 2004, A&A, 421, 741