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Träfflista för sökning "WFRF:(Ridgway P) srt2:(2005-2009)"

Search: WFRF:(Ridgway P) > (2005-2009)

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1.	Kervella, P., et al. (author) The radii of the nearby K5V and K7V stars 61 Cygni A & B - CHARA/FLUOR interferometry and CESAM2k modeling 2008 In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 488:2, s. 667-674 Journal article (peer-reviewed)abstract Context. The main sequence binary star 61 Cyg ( K5V+ K7V) is our nearest stellar neighbour in the northern hemisphere. This proximity makes it a particularly well suited system for very high accuracy interferometric radius measurements. Aims. Our goal is to constrain the poorly known evolutionary status and age of this bright binary star. Methods. We obtained high accuracy interferometric observations in the infrared K' band, using the CHARA/ FLUOR instrument. We then computed evolutionary models of 61 Cyg A & B with the CESAM2k code. As model constraints, we used a combination of observational parameters from classical observation methods (photometry, spectroscopy) as well as our new interferometric radii. Results. The measured limb darkened disk angular diameters are.LD( A) = 1.775 +/- 0.013 mas and.LD( B) = 1.581 +/- 0.022 mas, respectively for 61 Cyg A and B. Considering the high accuracy parallaxes available, these values translate into photospheric radii of R(A) = 0.665 +/- 0.005 R-circle dot and R(B) = 0.595 +/- 0.008 R-circle dot. The new radii constrain e. ciently the physical parameters adopted for the modeling of both stars, allowing us to predict asteroseismic frequencies based on our best- fit models. Conclusions. The CESAM2k evolutionary models indicate an age around 6 Gyr and are compatible with small values of the mixing length parameter. The measurement of asteroseismic oscillation frequencies in 61 Cyg A & B would be of great value to improve the modeling of this important fiducial stellar system, in particular to better constrain the masses.
2.	Verhoelst, T., et al. (author) Is Arcturus a well-understood K giant? : Test of model atmospheres and potential companion detection by near-infrared interferometry 2005 In: Astronomy and Astrophysics. ; 435, s. 289-301 Journal article (peer-reviewed)
3.	Angelin, B, et al. (author) EPROTIROME: A PHYSIOLOGICAL APPROACH TO LIPID CONTROL UTILIZING A LIVER SELECTIVE THYROID HORMONE RECEPTOR AGONIST 2009 In: ATHEROSCLEROSIS SUPPLEMENTS. - 1567-5688. ; 10:2 Conference paper (other academic/artistic)
4.	Fatkenheuer, G, et al. (author) Subgroup analyses of maraviroc in previously treated R5 HIV-1 infection 2008 In: The New England journal of medicine. - 1533-4406. ; 359:14, s. 1442-U46 Journal article (peer-reviewed)

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Result 1-4 of 4

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Type of publication: journal article (3); conference paper (1)

Type of content: peer-reviewed (3); other academic/artistic (1)

Author/Editor: Ridgway, S. T. (2); Baxter, J. (1); Eriksson, M (1); Angelin, B (1); Carlsson, B (1); Cooper, DA (1); show more...; Hirschel, B (1); Olsson, A (1); Waelkens, C. (1); Eriksson, Kjell (1); Nelson, M. (1); Decin, L. (1); Kristensen, J (1); Fatkenheuer, G (1); Lazzarin, A (1); Pichon, B. (1); Thevenin, F. (1); Ladenson, P (1); Ridgway, E (1); Klein, I (1); Kervella, P. (1); Raffi, F (1); Farrington, C. (1); ten Brummelaar, T. A ... (1); McAlister, H. A. (1); Goldfinger, P. J. (1); Sturmann, L. (1); Bigot, L. (1); Perrin, G. (1); Sturmann, J. (1); Turner, N. (1); Merand, A. (1); Verhoelst, T. (1); Dunne, MW (1); Konourina, I (1); Hoepelman, AIM (1); Lampiris, H (1); Tebas, P (1); Trottier, B (1); Bellos, N (1); Saag, M (1); Westby, M (1); Tawadrous, M (1); Sullivan, JF (1); Ridgway, C (1); Felstead, S (1); Mayer, H (1); van der Ryst, E (1); Heiter, U. (1); Traub, W. A. (1); show less...

University: Uppsala University (2); Karolinska Institutet (2)

Language: English (4)

Research subject (UKÄ/SCB): Natural sciences (1)

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