Detection of Solar-like Oscillations from Kepler Photometry of the Open Cluster NGC 6819
Dennis Stello
(1)
,
Sarbani Basu
(2)
,
Hans Bruntt
(1, 3, 4)
,
Benoît Mosser
(4)
,
Ian R. Stevens
(5)
,
Timothy M. Brown
(6)
,
Jørgen Christensen-Dalsgaard
(7)
,
Ronald L. Gilliland
(8)
,
Hans Kjeldsen
(7)
,
Torben Arentoft
(7)
,
Jérôme Ballot
(9)
,
Caroline Barban
(3, 4)
,
Timothy R. Bedding
(1)
,
William J. Chaplin
(5)
,
Yvonne P. Elsworth
(5)
,
Rafael A. García
(3, 10)
,
Marie-Jo Goupil
(4)
,
Saskia Hekker
(5)
,
Daniel Huber
(1)
,
Savita Mathur
(10, 11)
,
Søren Meibom
(12)
,
Vinothini Sangaralingam
(5)
,
Charles S. Baldner
(2)
,
Kevin Belkacem
(13)
,
Katia Biazzo
(14)
,
Karsten Brogaard
(7)
,
Juan Carlos Suárez
(15)
,
Francesca d'Antona
(16)
,
Pierre Demarque
(2)
,
Lisa Esch
(2)
,
Ning Gai
(2, 17)
,
Frank Grundahl
(7)
,
Yveline Lebreton
(18)
,
Biwei Jiang
(17)
,
Nada Jevtic
(19)
,
Christoffer Karoff
(5, 7)
,
Andrea Miglio
(13)
,
Joanna Molenda-Żakowicz
(20)
,
Josefina Montalbán
(13)
,
Arlette Noels
(13)
,
Teodoro Roca Cortés
(21, 22)
,
Ian W. Roxburgh
(23)
,
Aldo M. Serenelli
(24)
,
Victor Silva Aguirre
(24)
,
Christiaan Sterken
(25)
,
Peter Stine
(19)
,
Robert Szabó
(26)
,
Achim Weiss
(24)
,
William J. Borucki
(27)
,
David Koch
(27)
,
Jon M. Jenkins
(27)
1
SIfA -
Sydney Institute for Astronomy
2 Department of Astronomy [New Haven]
3 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
4 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
5 School of Physics and Astronomy
6 Las Cumbres Observatory Global Telescope
7 DASC - Danish AsteroSeismology Centre
8 STSci - Space Telescope Science Institute
9 LATT - Laboratoire Astrophysique de Toulouse-Tarbes
10 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
11 IIA - Indian Institute of Astrophysics
12 CfA - Harvard-Smithsonian Center for Astrophysics
13 Département des Sciences et Gestion de l'Environnement/Océanologie [Liège]
14 OAA - INAF - Osservatorio Astrofisico di Arcetri
15 IAA - Instituto de Astrofísica de Andalucía
16 OAR - INAF - Osservatorio Astronomico di Roma
17 Department of Astronomy
18 IPR - Institut de Physique de Rennes
19 Department of Physics and Engineering Technology
20 Astronomical Institute [Wroclaw]
21 IAC - Instituto de Astrofisica de Canarias
22 Departmento de Astrofísica
23 Queen Mary University of London - Department of Computer Science
24 MPA - Max-Planck-Institut für Astrophysik
25 VUB - Vrije Universiteit Brussel
26 Konkoly Observatory
27 ARC - NASA Ames Research Center
2 Department of Astronomy [New Haven]
3 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
4 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
5 School of Physics and Astronomy
6 Las Cumbres Observatory Global Telescope
7 DASC - Danish AsteroSeismology Centre
8 STSci - Space Telescope Science Institute
9 LATT - Laboratoire Astrophysique de Toulouse-Tarbes
10 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée
11 IIA - Indian Institute of Astrophysics
12 CfA - Harvard-Smithsonian Center for Astrophysics
13 Département des Sciences et Gestion de l'Environnement/Océanologie [Liège]
14 OAA - INAF - Osservatorio Astrofisico di Arcetri
15 IAA - Instituto de Astrofísica de Andalucía
16 OAR - INAF - Osservatorio Astronomico di Roma
17 Department of Astronomy
18 IPR - Institut de Physique de Rennes
19 Department of Physics and Engineering Technology
20 Astronomical Institute [Wroclaw]
21 IAC - Instituto de Astrofisica de Canarias
22 Departmento de Astrofísica
23 Queen Mary University of London - Department of Computer Science
24 MPA - Max-Planck-Institut für Astrophysik
25 VUB - Vrije Universiteit Brussel
26 Konkoly Observatory
27 ARC - NASA Ames Research Center
Dennis Stello
- Fonction : Auteur
- PersonId : 765480
- ORCID : 0000-0002-4879-3519
Jérôme Ballot
- Fonction : Auteur
- PersonId : 748797
- IdHAL : jerome-ballot
- ORCID : 0000-0002-9649-1013
- IdRef : 088581985
Saskia Hekker
- Fonction : Auteur
- PersonId : 762507
- ORCID : 0000-0002-1463-726X
Daniel Huber
- Fonction : Auteur
- PersonId : 757916
- ORCID : 0000-0001-8832-4488
Kevin Belkacem
- Fonction : Auteur
- PersonId : 741005
- IdHAL : kevin-belkacem
- IdRef : 134392035
Yveline Lebreton
- Fonction : Auteur
- PersonId : 639
- IdHAL : yveline-lebreton
- ORCID : 0000-0002-4834-2144
- IdRef : 031275656
Andrea Miglio
- Fonction : Auteur
- PersonId : 765481
- ORCID : 0000-0001-5998-8533
- IdRef : 16034509X
Josefina Montalbán
- Fonction : Auteur
- PersonId : 765482
- ORCID : 0000-0002-9143-9988
Victor Silva Aguirre
- Fonction : Auteur
- PersonId : 765483
- ORCID : 0000-0002-6137-903X
Résumé
Asteroseismology of stars in clusters has been a long-sought goal because the assumption of a common age, distance, and initial chemical composition allows strong tests of the theory of stellar evolution. We report results from the first 34 days of science data from the Kepler Mission for the open cluster NGC 6819--one of the four clusters in the field of view. We obtain the first clear detections of solar-like oscillations in the cluster red giants and are able to measure the large frequency separation, Δν, and the frequency of maximum oscillation power, νmax. We find that the asteroseismic parameters allow us to test cluster membership of the stars, and even with the limited seismic data in hand, we can already identify four possible non-members despite their having a better than 80% membership probability from radial velocity measurements. We are also able to determine the oscillation amplitudes for stars that span about 2 orders of magnitude in luminosity and find good agreement with the prediction that oscillation amplitudes scale as the luminosity to the power of 0.7. These early results demonstrate the unique potential of asteroseismology of the stellar clusters observed by Kepler.