Figure 1 from An Ancient Extrasolar System with Five Sub-Earth-size Planets

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An Ancient Extrasolar System with Five Sub-Earth-size Planets

Authors: T. L. Campante, T. Barclay, J. J. Swift, D. Huber, V. Zh. Adibekyan, W. Cochran, C. J. Burke, H. Isaacson, E. V. Quintana, G. R. Davies, V. Silva Aguirre, D. Ragozzine, R. Riddle, C. Baranec, S. Basu, W. J. Chaplin, J. Christensen-Dalsgaard, T. S. Metcalfe, T. R. Bedding, R. Handberg, D. Stello, J. M. Brewer, S. Hekker, C. Karoff, R. Kolbl, N. M. Law, M. Lundkvist, A. Miglio, J. F. Rowe, N. C. Santos, C. Van Laerhoven, T. Arentoft, Y. P. Elsworth, D. A. Fischer, S. D. Kawaler, H. Kjeldsen, M. N. Lund, G. W. Marcy, S. G. Sousa, A. Sozzetti, and T. R. White

Campante et al. 2015 The Astrophysical Journal 799 170.

Provider: AAS Journals

Caption: Figure 1.

Observed and synthetic spectra in the wavelength region occupied by the Mg I b triplet lines. The spectral fitting procedure covered 160 Å with most of the coverage in the range 6000–6200 Å, while having also included the region around the gravity-sensitive Mg I b triplet lines. The synthetic spectrum (thick line) provides a good fit to the Mg I b line wings. The combined effect of rotational line broadening and macroturbulence takes a value of ~2.2 km s⁻¹, an indication that this star is a fairly slow rotator.

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