M
M. S. Cunha
Researcher at University of Porto
Publications - 23
Citations - 469
M. S. Cunha is an academic researcher from University of Porto. The author has contributed to research in topics: Stars & Asteroseismology. The author has an hindex of 10, co-authored 23 publications receiving 425 citations.
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Journal ArticleDOI
THE ROLE OF TURBULENT PRESSURE AS A COHERENT PULSATIONAL DRIVING MECHANISM: THE CASE OF THE δ SCUTI STAR HD 187547
Victoria Antoci,M. S. Cunha,G. Houdek,Hans Kjeldsen,R. Trampedach,R. Trampedach,Gerald Handler,Theresa Lüftinger,Torben Arentoft,Simon J. Murphy +9 more
TL;DR: In this paper, convection dynamics can intrinsically excite coherent pulsations in the chemically peculiar δ Scuti star HD 187547, and perturbations of the mean Reynold stresses (turbulent pressure) that drive the pulsations and the excitation takes place predominantly in the hydrogen ionization zone.
Journal ArticleDOI
Asteroseismic modelling of the solar-type subgiant star β Hydri
I. M. Brandão,G. Doğan,Joergen Christensen-Dalsgaard,M. S. Cunha,Timothy R. Bedding,Travis S. Metcalfe,Hans Kjeldsen,H. Bruntt,H. Bruntt,Torben Arentoft +9 more
TL;DR: In this paper, the authors compare models and data of pulsating stars to understand the stellar structure better, which is necessary to make improvements to the physics of the stellar models, since they do not yet perfectly represent either the interior or especially the surface layers of stars.
Journal ArticleDOI
Kepler observations of rapidly oscillating Ap, δ Scuti and γ Doradus pulsations in Ap stars
L. A. Balona,M. S. Cunha,D. W. Kurtz,I. M. Brandão,Michael Gruberbauer,Hideyuki Saio,Roy Ostensen,V. G. Elkin,William J. Borucki,Joergen Christensen-Dalsgaard,Hans Kjeldsen,David G. Koch,S. T. Bryson +12 more
TL;DR: In this article, the A5p star KIC 8677585 obtained during the Kepler 10-d commissioning run with 1-min time resolution showed that it is a rapidly oscillating Ap (roAp) star with several frequencies with periods near 10 min and a low frequency at 3.142 d −1 is also clearly present.
Journal ArticleDOI
The fundamental parameters of the roAp star α Circini
Hans Bruntt,J. R. North,M. S. Cunha,I. M. Brandão,V. G. Elkin,D. W. Kurtz,John Davis,Timothy R. Bedding,A. P. Jacob,S. M. Owens,James Robertson,William J. Tango,J. F. Gameiro,Michael J. Ireland,Peter G. Tuthill +14 more
TL;DR: The first detailed interferometric study of a rapidly oscillating A (roAp) star, α Cir being the brightest member of its class, has been performed in this paper.
Journal ArticleDOI
The first evidence for multiple pulsation axes: a new rapidly oscillating Ap star in the Kepler field, KIC 10195926
D. W. Kurtz,M. S. Cunha,Hideyuki Saio,Lionel Bigot,L. A. Balona,V. G. Elkin,Hiromoto Shibahashi,I. M. Brandão,K. Uytterhoeven,S. Frandsen,S. Frimann,A. P. Hatzes,T. Lueftinger,Michael Gruberbauer,Hans Kjeldsen,Jørgen Christensen-Dalsgaard,S. D. Kawaler +16 more
TL;DR: In this article, the authors have discovered a new rapidly oscillating ap (roAp) star among the Kepler mission target stars, KIC 10195926, which shows two pulsation modes with periods that are amongst the longest known for roAp stars at 17.1 and 18.1 min, indicating that the star is near the terminal age main sequence.