Search

Your search keyword '"Beck, P.G."' showing total 29 results
Start Over Author "Beck, P.G."
29 results on '"Beck, P.G."'

1. Weighing stars from birth to death: mass determination methods across the HRD

Author

Serenelli, A., Weiss, A., Aerts, C., Angelou, G.C., Baroch, D., Bastian, N., Beck, P.G., Bergemann, M., Bestenlehner, J.M., Czekala, I., Elias-Rosa, N., Escorza, A., Eylen, V. Van, Feuillet, D.K., Gandolfi, D., Gieles, M., Girardi, L., Lebreton, Y., Lodieu, N., Martig, M., Miller Bertolami, M.M., Mombarg, J.S.G., Morales, J.C., Moya, A., Nsamba, B., Pavlovski, K., Pedersen, M.G., Ribas, I., Schneider, F.R.N., Silva Aguirre, V., Stassun, K.G., Tolstoy, E., Tremblay, P.-E., Zwintz, K., Serenelli, A., Weiss, A., Aerts, C., Angelou, G.C., Baroch, D., Bastian, N., Beck, P.G., Bergemann, M., Bestenlehner, J.M., Czekala, I., Elias-Rosa, N., Escorza, A., Eylen, V. Van, Feuillet, D.K., Gandolfi, D., Gieles, M., Girardi, L., Lebreton, Y., Lodieu, N., Martig, M., Miller Bertolami, M.M., Mombarg, J.S.G., Morales, J.C., Moya, A., Nsamba, B., Pavlovski, K., Pedersen, M.G., Ribas, I., Schneider, F.R.N., Silva Aguirre, V., Stassun, K.G., Tolstoy, E., Tremblay, P.-E., and Zwintz, K.

Abstract

Contains fulltext : 234292.pdf (Publisher’s version ) (Closed access) Contains fulltext : 234292pre.pdf (Author’s version preprint ) (Open Access)

Published
2021

3. Internal rotation of red giants by asteroseismology

Author

Christensen-Dalsgaard J., Mosser B., Hekker S., García R.A., Elsworth Y., Davies G., Beck P.G., Stello D., Ventura R., Di Mauro M.P., Cardini D., Bloemen S., Catanzaro G., De Smedt K., and Tkachenko A.

Subjects
Physics, QC1-999
Abstract

We present an asteroseismic approach to study the dynamics of the stellar interior in red giant stars by asteroseismic inversion of the splittings induced by the stellar rotation on the oscillation frequencies. We show preliminary results obtained for the red giant KIC4448777 observed by the space mission Kepler.

Published
2013
Full Text
View/download PDF

5. K2 photometry and HERMES spectroscopy of the blue supergiant ρ Leo: rotational wind modulation and low-frequency waves★

Author

Aerts, C., Bowman, D.M., S’imon-D’iaz, S., Buysschaert, B., Johnston, C., Moravveji, E., Beck, P.G., Cat, P. de, Triana, S., Aigrain, S., Castro, N., Huber, D., White, T., Aerts, C., Bowman, D.M., S’imon-D’iaz, S., Buysschaert, B., Johnston, C., Moravveji, E., Beck, P.G., Cat, P. de, Triana, S., Aigrain, S., Castro, N., Huber, D., and White, T.

Abstract

Contains fulltext : 184317.pdf (publisher's version ) (Open Access)

Published
2018

6. Beyond the Kepler/K2 bright limit: variability in the seven brightest members of the Pleiades

Author

White, T.R., Pope, B.J.S., Antoci, V., Pápics, P.I., Aerts, C., Gies, D.R., Gordon, K., Huber, D., Schaefer, G.H., Aigrain, S., Albrecht, S., Barclay, T., Barentsen, G., Beck, P.G., Bedding, T.R., Fredslund Andersen, M., Grundahl, F., Howell, S.B., Ireland, M.J., Murphy, S.J., Nielsen, M.B., Silva Aguirre, V., Tuthill, P.G., White, T.R., Pope, B.J.S., Antoci, V., Pápics, P.I., Aerts, C., Gies, D.R., Gordon, K., Huber, D., Schaefer, G.H., Aigrain, S., Albrecht, S., Barclay, T., Barentsen, G., Beck, P.G., Bedding, T.R., Fredslund Andersen, M., Grundahl, F., Howell, S.B., Ireland, M.J., Murphy, S.J., Nielsen, M.B., Silva Aguirre, V., and Tuthill, P.G.

Abstract

Contains fulltext : 176266.pdf (publisher's version ) (Open Access)

Published
2017

7. Surface rotation of Kepler red giant stars⋆

Author

Ceillier, T., Tayar, J., Mathur, S., Salabert, D., García, R.A., Stello, D., Pinsonneault, M.H., Saders, J. van, Beck, P.G., Bloemen, S., Ceillier, T., Tayar, J., Mathur, S., Salabert, D., García, R.A., Stello, D., Pinsonneault, M.H., Saders, J. van, Beck, P.G., and Bloemen, S.

Abstract

Contains fulltext : 178476.pdf (publisher's version ) (Open Access)

Published
2017

9. Testing the asymptotic relation for period spacings from mixed modes of red giants observed with the Kepler mission

Author

Buysschaert, B., Beck, P.G., Corsaro, E., Christensen-Dalsgaard, J., Aerts, C., Arentoft, T., Kjeldsen, H., Garcia, R.A., Aguirre, V.S., Degroote, P., Buysschaert, B., Beck, P.G., Corsaro, E., Christensen-Dalsgaard, J., Aerts, C., Arentoft, T., Kjeldsen, H., Garcia, R.A., Aguirre, V.S., and Degroote, P.

Abstract

Contains fulltext : 157953.pdf (preprint version ) (Open Access)

Published
2016

10. Internal Rotation of the Red-giant Star KIC 4448777 by Means of Asteroseismic Inversion

Author

Mauro, M.P. Di, Ventura, R., Cardini, D., Stello, D., Christensen-Dalsgaard, J., Dziembowski, W.A., Paternò, L., Beck, P.G., Bloemen, S., Davies, G.R., Smedt, K. De, Elsworth, Y., García, R.A., Hekker, S., Mosser, B., Tkachenko, A., Mauro, M.P. Di, Ventura, R., Cardini, D., Stello, D., Christensen-Dalsgaard, J., Dziembowski, W.A., Paternò, L., Beck, P.G., Bloemen, S., Davies, G.R., Smedt, K. De, Elsworth, Y., García, R.A., Hekker, S., Mosser, B., and Tkachenko, A.

Abstract

Contains fulltext : 155769.pdf (publisher's version ) (Open Access)

Published
2016

11. Constraining the core-rotation rate in red-giant stars from Kepler space photometry

Author

Beck, P.G., de Ridder, J., Aerts, C., Kallinger, T., Hekker, S., García, R.A., Mosser, B., Davies, G.R., Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Instituut voor Sterrenkunde [Leuven], Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), Institute of Astronomy [Leuven], Institute for Astronomy [Vienna], University of Vienna [Vienna], School of Physics and Astronomy, University of Birmingham [Birmingham], National Center for Atmospheric Research [Boulder] (NCAR), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Low Energy Astrophysics (API, FNWI), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], Astrophysics - Solar and Stellar Astrophysics, Astronomy, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Solar and Stellar Astrophysics (astro-ph.SR), ComputingMilieux_MISCELLANEOUS
Abstract

Rotation plays a key role in stellar structure and its evolution. Through transport processes which induce rotational mixing of chemical species and the redistribution of angular momentum, internal stellar rotation influences the evolutionary tracks in the Hertzsprung-Russell diagram. In turn, evolution influences the rotational properties. Therefore, information on the rotational properties of the deep interior would help to better understand the stellar evolution. However, as the internal rotational profile cannot be measured directly, it remains a major unknown leaving this important aspect of models unconstrained. We can test for nonrigid rotation inside the stars with asteroseismology. Through the effect of rotational splitting of non-radial oscillation modes, we investigate the internal rotation profile indirectly. Red giants have very slow rotation rates leading to a rotational splitting on the level of a few tenth of a \mu Hz. Only from more than 1.5 years of consecutive data from the NASA Kepler space telescope, these tiny variations could be resolved. A qualitative comparison to theoretical models allowed constraining the core-to-surface rotation rate for some of these evolved stars. In this paper, we report on the first results of a large sample study of splitting of individual dipole modes., Comment: 4 pages, 2 figures, accepted for publication in Astronomical Notes, proceedings of "The New Era of Helio- and Asteroseismology", 2012. 05. 20-25, Obergurgl (AT)

Published
2012
Full Text
View/download PDF

12. Spectroscopic frequencies of 4 CVn in 2010 and 2011

Author

Schmid, V.S., Themessl, N., Breger, M., Aerts, Conny, Beck, P.G., Castanheira, B.G., Fritz, V., Papics, P.I., Debosscher, J., and Falcon, R.E.

Subjects
Astronomy
Abstract

Contains fulltext : 107690.pdf (Publisher’s version ) (Closed access)

Published
2012

13. Detection of solar-like oscillations in the bright red giant stars γ Piscium and θ1 Tauri from a 190-day high-precision spectroscopic multi-site campaign⋆

Author

Beck, P.G., Kambe, E., Hillen, M., Corsaro, E., Winckel, H. van, Moravveji, E., Ridder, J. de, Bloemen, S., Saesen, S., Mathias, P., Degroote, P., Kallinger, T., Verhoelst, T., Ando, H., Carrier, F., Acke, B., Oreiro, R., Miglio, A., Eggenberger, P., Sato, B., Zwintz, K., Pápics, P.I., Marcos-Arenal, P., Fuentes, S.A. Sans, Schmid, V.S., Waelkens, C., Østensen, R.H., Matthews, J.M., Yoshida, M., Izumiura, H., Koyano, H., Nagayama, S., Shimizu, Y., Okada, N., Okita, K., Sakamoto, A., Yamamuro, T., Aerts, C., Beck, P.G., Kambe, E., Hillen, M., Corsaro, E., Winckel, H. van, Moravveji, E., Ridder, J. de, Bloemen, S., Saesen, S., Mathias, P., Degroote, P., Kallinger, T., Verhoelst, T., Ando, H., Carrier, F., Acke, B., Oreiro, R., Miglio, A., Eggenberger, P., Sato, B., Zwintz, K., Pápics, P.I., Marcos-Arenal, P., Fuentes, S.A. Sans, Schmid, V.S., Waelkens, C., Østensen, R.H., Matthews, J.M., Yoshida, M., Izumiura, H., Koyano, H., Nagayama, S., Shimizu, Y., Okada, N., Okita, K., Sakamoto, A., Yamamuro, T., and Aerts, C.

Abstract

Contains fulltext : 139608.pdf (preprint version ) (Open Access)

Published
2015

16. Discovery of binarity, spectroscopic frequency analysis, and mode identification of the δ Scuti star 4 CVn

Author

Schmid, V.S., Themeßl, N., Breger, M., Degroote, P., Aerts, C., Beck, P.G., Tkachenko, A., Reeth, T. Van, Bloemen, S., Debosscher, J., Castanheira, B.G., McArthur, B.E., Pápics, P.I., Fritz, V., Falcon, R.E., Schmid, V.S., Themeßl, N., Breger, M., Degroote, P., Aerts, C., Beck, P.G., Tkachenko, A., Reeth, T. Van, Bloemen, S., Debosscher, J., Castanheira, B.G., McArthur, B.E., Pápics, P.I., Fritz, V., and Falcon, R.E.

Abstract

Contains fulltext : 132475.pdf (preprint version ) (Open Access)

Published
2014

17. Rotation and magnetism of Kepler pulsating solar-like stars : Towards asteroseismically calibrated age-rotation relations

Author

García, R.A., Ceillier, T., Salabert, D., Mathur, S., Saders, J.L. van, Pinsonneault, M., Ballot, J., Beck, P.G., Bloemen, S., Campante, T.L., Davies, G.R., Nascimento, J.-D. do, Mathis, S., Metcalfe, T.S., Nielsen, M.B., Suárez, J.C., Chaplin, W.J., Jiménez, A., Karoff, C., García, R.A., Ceillier, T., Salabert, D., Mathur, S., Saders, J.L. van, Pinsonneault, M., Ballot, J., Beck, P.G., Bloemen, S., Campante, T.L., Davies, G.R., Nascimento, J.-D. do, Mathis, S., Metcalfe, T.S., Nielsen, M.B., Suárez, J.C., Chaplin, W.J., Jiménez, A., and Karoff, C.

Abstract

Contains fulltext : 134827.pdf (preprint version ) (Open Access)

Published
2014

18. Pulsating red giant stars in eccentric binary systems discovered from Kepler space-based photometry : A sample study and the analysis of KIC 5006817

Author

Beck, P.G., Hambleton, K., Vos, J., Kallinger, T., Bloemen, S.L.D., Tkachenko, A., García, R.A., Østensen, R.H., Aerts, C., Kurtz, D.W., Ridder, J. de, Hekker, S., Pavlovski, K., Mathur, S., Smedt, K. De, Derekas, A., Corsaro, E., Mosser, B., Winckel, H. van, Huber, D., Degroote, P., Davies, G.R., Prša, A., Debosscher, J., Elsworth, Y., Nemeth, P., Siess, L., Schmid, V.S., Pápics, P.I., Vries, B.L. de, Marle, A.J. van, Marcos-Arenal, P., Lobel, A., Beck, P.G., Hambleton, K., Vos, J., Kallinger, T., Bloemen, S.L.D., Tkachenko, A., García, R.A., Østensen, R.H., Aerts, C., Kurtz, D.W., Ridder, J. de, Hekker, S., Pavlovski, K., Mathur, S., Smedt, K. De, Derekas, A., Corsaro, E., Mosser, B., Winckel, H. van, Huber, D., Degroote, P., Davies, G.R., Prša, A., Debosscher, J., Elsworth, Y., Nemeth, P., Siess, L., Schmid, V.S., Pápics, P.I., Vries, B.L. de, Marle, A.J. van, Marcos-Arenal, P., and Lobel, A.

Abstract

Contains fulltext : 127888.pdf (publisher's version ) (Open Access)

Published
2014

19. KIC 11285625: A double-lined spectroscopic binary with a γ Doradus pulsator discovered from Kepler space photometry

Author

Debosscher, J., Aerts, C.C., Tkachenko, A., Pavlovski, K., Maceroni, C., Kurtz, D., Beck, P.G., Bloemen, S.L.D., Degroote, P., Lombaert, R., Southworth, J., Debosscher, J., Aerts, C.C., Tkachenko, A., Pavlovski, K., Maceroni, C., Kurtz, D., Beck, P.G., Bloemen, S.L.D., Degroote, P., Lombaert, R., and Southworth, J.

Abstract

Contains fulltext : 117071.pdf (preprint version ) (Open Access)

Published
2013

20. Low-frequency variations of unknown origin in the Kepler δ Scuti star KIC 5988140 = HD 188774*,**

Author

Lampens, P., Tkachenko, A., Lehmann, H., Debosscher, J., Aerts, Conny, Beck, P.G., Bloemen, S.L.D., Kochiashvili, N., Derekas, A., Smith, J.C., Tenenbaum, P., Twicken, J.D., Lampens, P., Tkachenko, A., Lehmann, H., Debosscher, J., Aerts, Conny, Beck, P.G., Bloemen, S.L.D., Kochiashvili, N., Derekas, A., Smith, J.C., Tenenbaum, P., and Twicken, J.D.

Abstract

Contains fulltext : 111369.pdf (preprint version ) (Open Access)

Published
2013

21. Binaries discovered by the MUCHFUSS project : FBS0117+396: An sdB+dM binary with a pulsating primary

Author

Østensen, R.H., Geier, S., Schaffenroth, V., Telting, J.H., Bloemen, S.L.D., Németh, P., Beck, P.G., Lombaert, R., Pápics, P.I., Tillich, A., Ziegerer, E., Machado, L. Fox, Littlefair, S., Dhillon, V., Aerts, C.C., Heber, U., Maxted, P.F.L., Gänsicke, B.T., Marsh, T.R., Østensen, R.H., Geier, S., Schaffenroth, V., Telting, J.H., Bloemen, S.L.D., Németh, P., Beck, P.G., Lombaert, R., Pápics, P.I., Tillich, A., Ziegerer, E., Machado, L. Fox, Littlefair, S., Dhillon, V., Aerts, C.C., Heber, U., Maxted, P.F.L., Gänsicke, B.T., and Marsh, T.R.

Abstract

Contains fulltext : 119334.pdf (preprint version ) (Open Access)

Published
2013

22. Two new SB2 binaries with main sequence B-type pulsators in the Kepler field

Author

Pápics, P.I., Tkachenko, A., Aerts, C.C., Briquet, M., Marcos-Arenal, P., Beck, P.G., Uytterhoeven, K., Hage, A. Triviño, Southworth, J., Clubb, K.I., Bloemen, S.L.D., Degroote, P., Jackiewicz, J., McKeever, J., Winckel, H. van, Niemczura, E., Gameiro, J.F., Debosscher, J., Pápics, P.I., Tkachenko, A., Aerts, C.C., Briquet, M., Marcos-Arenal, P., Beck, P.G., Uytterhoeven, K., Hage, A. Triviño, Southworth, J., Clubb, K.I., Bloemen, S.L.D., Degroote, P., Jackiewicz, J., McKeever, J., Winckel, H. van, Niemczura, E., Gameiro, J.F., and Debosscher, J.

Abstract

Contains fulltext : 117309.pdf (preprint version ) (Open Access)

Published
2013

24. Kepler Detected Gravity-Mode Period Spacings in a Red Giant Star

Author

Beck, P.G., Bedding, R., Aerts, Conny, Huber, D., White, T.R., Jenkins, J.M., Beck, P.G., Bedding, R., Aerts, Conny, Huber, D., White, T.R., and Jenkins, J.M.

Abstract

Contains fulltext : 91968.pdf (publisher's version ) (Closed access)

Published
2011

26. Internal rotation of red giants by asteroseismology

Author

Di Mauro, M.P., primary, Cardini, D., additional, Ventura, R., additional, Stello, D., additional, Beck, P.G., additional, Davies, G., additional, Elsworth, Y., additional, García, R.A., additional, Hekker, S., additional, Mosser, B., additional, Christensen-Dalsgaard, J., additional, Bloemen, S., additional, Catanzaro, G., additional, De Smedt, K., additional, and Tkachenko, A., additional

Published
2013
Full Text
View/download PDF

27. Towards ensemble asteroseismology of the young open clusters χ Persei and NGC 6910

Author

Saesen, S., primary, Pigulski, A., additional, Carrier, F., additional, Michalska, G., additional, Aerts, C., additional, De Ridder, J., additional, Briquet, M., additional, Handler, G., additional, Kołaczkowski, Z., additional, Acke, B., additional, Bauwens, E., additional, Beck, P.G., additional, Blom, Y., additional, Blommaert, J., additional, Broeders, E., additional, Cherix, M., additional, Davignon, G., additional, Debosscher, J., additional, Degroote, P., additional, Decin, L., additional, Dehaes, S., additional, De Meester, W., additional, Deroo, P., additional, Desmet, M., additional, Drummond, R., additional, Eggen, J.R., additional, Fu, J., additional, Gazeas, K., additional, Gelven, G.A., additional, Gielen, C., additional, Huygen, R., additional, Jiang, X., additional, Kalomeni, B., additional, Kim, S.‐L., additional, Kim, D.H., additional, Kopacki, G., additional, Kwon, J.‐H., additional, Ladjal, D., additional, Lee, C.‐U., additional, Lee, Y.‐J., additional, Lefever, K., additional, Leitner, A., additional, Lenz, P., additional, Liakos, A., additional, Lorenz, D., additional, Narwid, A., additional, Niarchos, P., additional, Østensen, R., additional, Poretti, E., additional, Prins, S., additional, Provencal, J., additional, Puga Antolin, E., additional, Puschnig, J., additional, Raskin, G., additional, Reed, M.D., additional, Reyniers, M., additional, Schmidt, E., additional, Schmitzberger, L., additional, Spano, M., additional, Steininger, B., additional, Stęślicki, M., additional, Uytterhoeven, K., additional, Vanautgaerden, J., additional, Vandenbussche, B., additional, Van Helshoecht, V., additional, Vanhollebeke, E., additional, Van Winckel, H., additional, Verhoelst, T., additional, Vučković, M., additional, Waelkens, C., additional, Wolf, G.W., additional, Yakut, K., additional, Zhang, C., additional, and Zima, W., additional

Published
2010
Full Text
View/download PDF

28. Do we see the simultaneous occurrence of stellar rotational effects and short-period pulsations in some A-type Kepler stars?

Author

Lampes, P., Tkachenko, A., Lehmann, H., Debosscher, J., Aerts, C., Beck, P.G., Bloemen, S., Kochiashvili, N., and Derekas, A.

Abstract

We used high-quality Kepler photometry and recent spectroscopic data to investigate the Kepler target KIC 005988140 considering three possible scenario's: (1) binarity, (2) co-existence of δ Scuti- and γ Doradus-type oscillations, and (3) rotational modulation with spots over the stellar surface. Using spectrum synthesis, we derived improved atmospheric parameters from high-resolution, high signal-to-noise spectra. The star is of spectral type A7.5 IV-III with a metallicity slightly lower than that of the Sun. The Fourier analyses of both the photometric and the spectroscopic data reveal two dominant frequencies - with an integer ratio equal to two - in the low frequency regime. Nine more frequencies located in the typical δ Scuti range were also detected. The mean light and radial velocity curves which are not exactly in antiphase, show a similar double-wave shape. We therefore suggest on a preliminary basis that the physical cause of the observed light and radial velocity variations is the simultaneous occurrence of (δ Sct-type) pressure modes and stellar rotation coupled to inhomogeneities on the surface of this late A-type star (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]

Published
2012
Full Text
View/download PDF

29. Age dating of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi

Author

William J. Chaplin, Aldo M. Serenelli, Andrea Miglio, Thierry Morel, J. Ted Mackereth, Fiorenzo Vincenzo, Hans Kjeldsen, Sarbani Basu, Warrick H. Ball, Amalie Stokholm, Kuldeep Verma, Jakob Rørsted Mosumgaard, Victor Silva Aguirre, Anwesh Mazumdar, Pritesh Ranadive, H. M. Antia, Yveline Lebreton, Joel Ong, Thierry Appourchaux, Timothy R. Bedding, Jørgen Christensen-Dalsgaard, Orlagh Creevey, Rafael A. García, Rasmus Handberg, Daniel Huber, Steven D. Kawaler, Mikkel N. Lund, Travis S. Metcalfe, Keivan G. Stassun, Michäel Bazot, Paul G. Beck, Keaton J. Bell, Maria Bergemann, Derek L. Buzasi, Othman Benomar, Diego Bossini, Lisa Bugnet, Tiago L. Campante, Zeynep Çelik Orhan, Enrico Corsaro, Lucía González-Cuesta, Guy R. Davies, Maria Pia Di Mauro, Ricky Egeland, Yvonne P. Elsworth, Patrick Gaulme, Hamed Ghasemi, Zhao Guo, Oliver J. Hall, Amir Hasanzadeh, Saskia Hekker, Rachel Howe, Jon M. Jenkins, Antonio Jiménez, René Kiefer, James S. Kuszlewicz, Thomas Kallinger, David W. Latham, Mia S. Lundkvist, Savita Mathur, Josefina Montalbán, Benoit Mosser, Andres Moya Bedón, Martin Bo Nielsen, Sibel Örtel, Ben M. Rendle, George R. Ricker, Thaíse S. Rodrigues, Ian W. Roxburgh, Hossein Safari, Mathew Schofield, Sara Seager, Barry Smalley, Dennis Stello, Róbert Szabó, Jamie Tayar, Nathalie Themeßl, Alexandra E. L. Thomas, Roland K. Vanderspek, Walter E. van Rossem, Mathieu Vrard, Achim Weiss, Timothy R. White, Joshua N. Winn, Mutlu Yıldız, European Commission, European Research Council, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Generalitat de Catalunya, Chaplin W.J., Serenelli A.M., Miglio A., Morel T., Mackereth J.T., Vincenzo F., Kjeldsen H., Basu S., Ball W.H., Stokholm A., Verma K., Mosumgaard J.R., Silva Aguirre V., Mazumdar A., Ranadive P., Antia H.M., Lebreton Y., Ong J., Appourchaux T., Bedding T.R., Christensen-Dalsgaard J., Creevey O., Garcia R.A., Handberg R., Huber D., Kawaler S.D., Lund M.N., Metcalfe T.S., Stassun K.G., Bazot M., Beck P.G., Bell K.J., Bergemann M., Buzasi D.L., Benomar O., Bossini D., Bugnet L., Campante T.L., Orhan Z.C., Corsaro E., Gonzalez-Cuesta L., Davies G.R., Di Mauro M.P., Egeland R., Elsworth Y.P., Gaulme P., Ghasemi H., Guo Z., Hall O.J., Hasanzadeh A., Hekker S., Howe R., Jenkins J.M., Jimenez A., Kiefer R., Kuszlewicz J.S., Kallinger T., Latham D.W., Lundkvist M.S., Mathur S., Montalban J., Mosser B., Bedon A.M., Nielsen M.B., Ortel S., Rendle B.M., Ricker G.R., Rodrigues T.S., Roxburgh I.W., Safari H., Schofield M., Seager S., Smalley B., Stello D., Szabo R., Tayar J., Themessl N., Thomas A.E.L., Vanderspek R.K., van Rossem W.E., Vrard M., Weiss A., White T.R., Winn J.N., Yildiz M., Institut d'astrophysique spatiale (IAS), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Department of Psychology, St John's University, Institute of Space Sciences [Barcelona] (ICE-CSIC), Spanish National Research Council [Madrid] (CSIC), School of Physics and Astronomy, University of Birmingham [Birmingham], Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS), Danish AsteroSeismology Centre (DASC), Aarhus University [Aarhus], Department of Astronomy, Yale University [New Haven], Max-Planck-Institut für Astrophysik (MPA), Max-Planck-Gesellschaft, Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Sydney Institute for Astronomy (SIfA), The University of Sydney, Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Research institute of Computer Vision and Robotics [Girona] (VICOROB), Universitat de Girona (UdG), Department of Physics and Astronomy [Aarhus], Department of Physics and Astronomy [Iowa City], University of Iowa [Iowa City], Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Istituto di Astrofisica Spaziale e Fisica cosmica - Roma (IASF-Roma), Istituto Nazionale di Astrofisica (INAF), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), NASA Ames Research Center (ARC), Centre for Automation and Robotics (CAR), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad Politécnica de Madrid (UPM), Kiepenheuer-Institut für Sonnenphysik (KIS), Stellar Astrophysics Centre [Aarhus] (SAC), Instituut voor Sterrenkunde [Leuven], Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven), High Altitude Observatory (HAO), National Center for Atmospheric Research [Boulder] (NCAR), Département des Sciences et Gestion de l'Environnement/Océanologie [Liège], Université de Liège, Center for Space Research [Cambridge] (CSR), Massachusetts Institute of Technology (MIT), High Speed Networks Laboratory, Dept. of Telecommunications and Media Informatics, Budapest University of Technology and Economics [Budapest] (BME), Department of Astronomy (Ohio State University), Ohio State University [Columbus] (OSU), Observatoire de Paris, Université Paris sciences et lettres (PSL), Ege Üniversitesi, CERFACS [Toulouse], Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), Universidad Politécnica de Madrid (UPM)-Consejo Superior de Investigaciones Científicas [Spain] (CSIC), PSL Research University (PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010504 meteorology & atmospheric sciences, Milky Way, Population, GAIA, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, MASS, CHEMICAL-COMPOSITION, Q1, 01 natural sciences, Asteroseismology, 0103 physical sciences, QB460, Satellite galaxy, STELLAR HALOES, Astrophysics::Solar and Stellar Astrophysics, 10. No inequality, education, 010303 astronomy & astrophysics, QB600, QC, Astrophysics::Galaxy Astrophysics, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Dwarf galaxy, QB, Physics, [PHYS]Physics [physics], education.field_of_study, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], ACCRETION HISTORY, Astronomy and Astrophysics, DISC, Astrophysics - Astrophysics of Galaxies, Galaxy, MODEL, Stars, Astrophysics - Solar and Stellar Astrophysics, DARK-MATTER HALOES, ROTATION, Halo, Astrophysics::Earth and Planetary Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], SOLAR-LIKE OSCILLATIONS, QB799
Abstract

This paper includes data collected by the TESS mission, which are publicly available from the Mikulski Archive for Space Telescopes (MAST). et al., Over the course of its history, the Milky Way has ingested multiple smaller satellite galaxies. Although these accreted stellar populations can be forensically identified as kinematically distinct structures within the Galaxy, it is difficult in general to date precisely the age at which any one merger occurred. Recent results have revealed a population of stars that were accreted via the collision of a dwarf galaxy, called Gaia–Enceladus, leading to substantial pollution of the chemical and dynamical properties of the Milky Way. Here we identify the very bright, naked-eye star ν Indi as an indicator of the age of the early in situ population of the Galaxy. We combine asteroseismic, spectroscopic, astrometric and kinematic observations to show that this metal-poor, alpha-element-rich star was an indigenous member of the halo, and we measure its age to be 11.0±0.7 (stat) ±0.8 (sys) billion years. The star bears hallmarks consistent with having been kinematically heated by the Gaia–Enceladus collision. Its age implies that the earliest the merger could have begun was 11.6 and 13.2 billion years ago, at 68% and 95% confidence, respectively. Computations based on hierarchical cosmological models slightly reduce the above limits., J.M. acknowledge support from the ERC Consolidator Grant funding scheme (project ASTEROCHRONOMETRY, grant agreement number 772293). A.M.S. is partially supported by the Spanish Government (ESP2017-82674-R) and Generalitat de Catalunya (2017-SGR-1131). T.L.C. acknowledges support from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement number 792848 (PULSATION). K.J.B., S.H., J.S.K. and N.T. are supported by the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement number 338251 (StellarAges). E.C. is funded by the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement number 664931. L.G.-C. acknowledges support from the MINECO FPI-SO doctoral research project SEV-2015-0548-17-2 and predoctoral contract BES-2017-082610. S.M. acknowledges support from the Spanish ministry through the Ramon y Cajal fellowship number RYC-2015-17697. This work was supported by FEDER through COMPETE2020 (POCI-01-0145-FEDER-030389. A.M.B. acknowledges funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement No 749962 (project THOT).

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results