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investigation of Stars In the Milky way with Bayesian statistics and Asteroseismology

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Tag: mikkel

Papers

HD219666b: A hot-Neptune from TESS Sector 1

M. Esposito, D.J. Armstrong, D. Gandolfi, V. Adibekyan, M. Fridlund, N.C. Santos, J.H. Livingston, E. Delgado Mena, L. Fossati, J. Lillo-Box, O. Barragán, D. Barrado, P.E. Cubillos, B. Cooke, A.B. Justesen, F. Meru, R.F. Díaz, F. Dai, L.D. Nielsen, C.M. Persson, P.J. Wheatley, A.P. Hatzes, V. Van Eylen, M.M. Musso, R. Alonso, P. Beck, S.C.C. Barros, D. Bayliss, A.S. Bonomo, F. Bouchy, D.J.A. Brown, E. Bryant, J. Cabrera, W.D. Cochran, S. Csizmadia, H. Deeg, O. Demangeon, M. Deleuil, X. Dumusque, P. Eigmüller, M. Endl, A. Erikson, F. Faedi, P. Figueira, A. Fukui, S. Grziwa, E.W. Guenther, D. Hidalgo, M. Hjorth, T. Hirano, S. Hojjatpanah, E. Knudstrup, J. Korth, K.W.F. Lam, J. de Leon, M.N. Lund, R. Luque, S. Mathur, P. Montañés Rodríguez, N. Narita, D. Nespral, P. Niraula, G. Nowak, H.P. Osborn, E. Pallé, M. Pätzold, D. Pollacco, J. Prieto-Arranz, H. Rauer, S. Redfield, I. Ribas, S.G. Sousa, A.M.S. Smith, M. Tala-Pinto, S. Udry, J.N. Winn

HD219666b: A hot-Neptune from TESS Sector 1 See arXiv version Accepted for publication in A&A

Continue reading “HD219666b: A hot-Neptune from TESS Sector 1” →
December 14, 2018June 10, 2019mikkelLeave a comment
Papers

Helium abundance in a sample of cool stars: measurements from asteroseismology

Kuldeep Verma, Keyuri Raodeo, Sarbani Basu, Víctor Silva Aguirre, Anwesh Mazumdar, Jakob Rørsted Mosumgaard, Mikkel N. Lund, Pritesh Ranadive

Helium abundance in a sample of cool stars: measurements from asteroseismology
See arXiv version
17 Pages, 9 Figures, 5 Tables, Accepted for publication in MNRAS

Continue reading “Helium abundance in a sample of cool stars: measurements from asteroseismology” →

December 6, 2018June 10, 2019jakob, kuldeep, mikkel, victorLeave a comment
Papers

Signatures of magnetic activity in the seismic data of solar-type stars observed by Kepler

A. R. G. Santos, T. L. Campante, W. J. Chaplin, M. S. Cunha, M. N. Lund, R. Kiefer, D. Salabert, R. A. Garcia, G. R. Davies, Y Elsworth, R. Howe

Signatures of magnetic activity in the seismic data of solar-type stars observed by Kepler
See arXiv version
Accepted for publication in ApJS, 19(+86) pages, 11(+89) figures, 2(+87) tables

Continue reading “Signatures of magnetic activity in the seismic data of solar-type stars observed by Kepler” →

May 31, 2018July 15, 2018mikkelLeave a comment
Papers

Inference of stellar parameters from brightness variations

Melissa K. Ness, Victor Silva Aguirre, Mikkel N. Lund, Matteo Cantiello, Daniel Foreman-Mackey, David W. Hogg, Ruth Angus

Inference of stellar parameters from brightness variations
See arXiv version
10 pages, 7 Figures, submitted to ApJ

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May 11, 2018July 15, 2018mikkel, victorLeave a comment
Papers

HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2

V. Van Eylen, F. Dai, S. Mathur, D. Gandolfi, S. Albrecht, M. Fridlund, R. A. García, E. Guenther, M. Hjorth, A. B. Justesen, J. Livingston, M. N. Lund, F. Pérez Hernández, J. Prieto-Arranz, C. Regulo, L. Bugnet, M. E. Everett, T. Hirano, D. Nespral, G. Nowak, E. Palle, V. Silva Aguirre, T. Trifonov, J. N. Winn, O. Barragán, P. G. Beck, W. J. Chaplin, W. D. Cochran, S. Csizmadia, H. Deeg, M. Endl, P. Heeren, S. Grziwa, A. P. Hatzes, D. Hidalgo, J. Korth, S. Mathis, P. Montañes Rodriguez, N. Narita, M. Patzold, C. M. Persson, F. Rodler, A. M. S. Smith

HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2
See arXiv version
Submitted to MNRAS on 23 February 2018, accepted for publication, 4 May 2018

Continue reading “HD 89345: a bright oscillating star hosting a transiting warm Saturn-sized planet observed by K2” →

May 4, 2018July 15, 2018mikkel, victorLeave a comment
Papers

Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s)

Silva Aguirre, V.; Bojsen-Hansen, M.; Slumstrup, D.; Casagrande, L.; Kawata, D.; Ciuca, I.; Lund, M. N.; Mosumgaard, J. R.; Huber, D.; Johnson, J. A.; Pinsonneault, M. H.; Serenelli, A. M.; Stello, D.; Tayar, J.; Bird, J. C.; Cassisi, S.; Hon, M.; Martig, M.; Nissen, P. E.; Rix, H. W.; Schönrich, R.; Sahlholdt, C.; Trick, W. H.; Yu, J.

Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s),
Monthly Notices of the Royal Astronomical Society, Vol. 475, Issue 4

Continue reading “Confirming chemical clocks: asteroseismic age dissection of the Milky Way disk(s)” →

April 21, 2018March 10, 2018ditte, jakob, mikkel, victorLeave a comment
Papers

Aldebaran b’s temperate past uncovered in planet search data

Will M. Farr, Benjamin J. S. Pope, Guy R. Davies, Thomas S. H. North, Timothy R. White, Jim W. Barrett, Andrea Miglio, Mikkel N. Lund, Victoria Antoci, Mads Fredslund Andersen, Frank Grundahl, Daniel Huber

Aldebaran b’s temperate past uncovered in planet search data
See arXiv version
24 pages, 7 figures (including appendices); submitted to ApJL

 

Continue reading “Aldebaran b’s temperate past uncovered in planet search data” →

February 27, 2018July 4, 2018mikkel, timLeave a comment
Papers

Establishing the accuracy of asteroseismic mass and radius estimates of giant stars. I. Three eclipsing systems at [Fe/H]~-0.3 and the need for a large high-precision sample.

Brogaard, K., Hansen, C. J., Miglio, A., Slumstrup, D., Frandsen, S., Jessen-Hansen, J., Lund, M. N., Bossini, D., Thygesen, A., Davies, G. R., Chaplin, W. J., Arentoft,  T., Bruntt, H., Grundahl, F., Handberg, R.

Establishing the accuracy of asteroseismic mass and radius estimates of giant stars. I. Three eclipsing systems at [Fe/H]~-0.3 and the need for a large high-precision sample.

Monthly Notices of the Royal Astronomical Society

Continue reading “Establishing the accuracy of asteroseismic mass and radius estimates of giant stars. I. Three eclipsing systems at [Fe/H]~-0.3 and the need for a large high-precision sample.” →

February 1, 2018March 10, 2018ditte, mikkelLeave a comment
Papers

The Influence of Metallicity on Stellar Differential Rotation and Magnetic Activity

Karoff, Christoffer, Metcalfe, Travis S., Santos, Ângela R.  G., Montet, Benjamin T., Isaacson, Howard, Witzke, Veronika, Shapiro, Alexander I., Mathur,  Savita, Davies, Guy R., Lund, Mikkel N., Garcia, Rafael A., Brun, Allan S., Salabert, David, Avelino, Pedro P., van Saders, Jennifer, Egeland, Ricky, Cunha, Margarida S., Campante, Tiago L., Chaplin, William J., Krivova, Natalie, Solanki, Sami K., Stritzinger, Maximilian, Knudsen, Mads F.

The Influence of Metallicity on Stellar Differential Rotation and Magnetic Activity,

The Astrophysical Journal, Volume 852, Issue 1

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January 5, 2018March 10, 2018mikkelLeave a comment
Papers

Spatial incoherence of solar granulation: a global analysis using BiSON 2B data

Lund, Mikkel N.; Chaplin, William J.; Hale, Steven J.; Davies, Guy R.; Elsworth, Yvonne P.; Howe, Rachel

Spatial incoherence of solar granulation: a global analysis using BiSON 2B data,
Monthly Notices of the Royal Astronomical Society, Vol. 472, Issue 3

Continue reading “Spatial incoherence of solar granulation: a global analysis using BiSON 2B data” →

December 1, 2017February 27, 2018mikkelLeave a comment

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  • Scaling relations of convective granulation noise across the HR diagram from 3D stellar atmosphere models
  • Disc dichotomy signature in the vertical distribution of [Mg/Fe] and the delayed gas infall scenario
  • The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
  • Chemo-dynamics and asteroseismic ages of seven metal-poor red giants from the Kepler field
  • The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission

News

  • Scaling relations of convective granulation noise across the HR diagram from 3D stellar atmosphere models
  • Disc dichotomy signature in the vertical distribution of [Mg/Fe] and the delayed gas infall scenario
  • The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
  • Chemo-dynamics and asteroseismic ages of seven metal-poor red giants from the Kepler field
  • The SAPP pipeline for the determination of stellar abundances and atmospheric parameters of stars in the core program of the PLATO mission

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