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

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Month: December 2018

Papers

Detection and characterization of an ultra-dense sub-Neptune planet orbiting the Sun-like star HD 119130

R. Luque, G. Nowak, E. Pallé, F. Dai, A. Kaminski, E. Nagel, D. Hidalgo, F. Bauer, M. Lafarga, J. Livingston, O. Barragán, T. Hirano, M. Fridlund, D. Gandolfi, A. B. Justesen, M. Hjorth, V. Van Eylen, J. N. Winn, M. Esposito, J. C. Morales, S. Albrecht, R. Alonso, P. J. Amado, P. Beck, J. A. Caballero, J. Cabrera, W. D. Cochran, Sz. Csizmadia, H. Deeg, Ph. Eigmüller, M. Endl, A. Erikson, A. Fukui, S. Grziwa, E. W. Guenther, A. P. Hatzes, E. Knudstrup, J. Korth, K. W. F. Lam, M. N. Lund, S. Mathur, P. Montañes-Rodríguez, N. Narita, D. Nespral, P. Niraula, M. Pätzold, C. M. Persson, J. Prieto-Arranz, A. Quirrenbach, H. Rauer, S. Redfield, A. Reiners, I. Ribas, A. M. S. Smith

Detection and characterization of an ultra-dense sub-Neptune planet orbiting the Sun-like star HD 119130
See arXiv version
Submitted to A&A; 9 pages, 8 figures, 4 tables

Continue reading “Detection and characterization of an ultra-dense sub-Neptune planet orbiting the Sun-like star HD 119130” →

December 21, 2018June 10, 2019mikkelLeave a comment
Papers

Stellar ages, masses and radii from asteroseismic modeling are robust to systematic errors in spectroscopy

Earl P. Bellinger, Saskia Hekker, George C. Angelou, Amalie Stokholm, Sarbani Basu

Stellar ages, masses and radii from asteroseismic modeling are robust to systematic errors in spectroscopy
See arXiv version
Accepted for publication in A&A

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December 17, 2018February 2, 2019amalieLeave a comment
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

Systematic Differences in Spectroscopic Analysis of Red Giants

Ditte Slumstrup, Frank Grundahl, Victor Silva Aguirre, Karsten Brogaard

Systematic Differences in Spectroscopic Analysis of Red Giants
See arXiv version
Accepted for publication in Astronomy and Astrophysics

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December 13, 2018February 2, 2019ditte, victorLeave 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

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

Model physics in low-mass solar-type stars: atomic diffusion and metallicity mixture

Benard Nsamba, Tiago L. Campante, Mário J. P. F. G. Monteiro, Margarida S. Cunha, Ben M. Rendle, Daniel R. Reese, Kuldeep Verma

Model physics in low-mass solar-type stars: atomic diffusion and metallicity mixture
See arXiv version
3 pages, 3 figures, proceeding of PHOST (Physics of Oscillating Stars) – a conference in honour of Prof. H. Shibahashi, 2-7 Sept. 2018, Banyuls-sur-mer (France)

Continue reading “Model physics in low-mass solar-type stars: atomic diffusion and metallicity mixture” →

December 3, 2018February 2, 2019kuldeepLeave a comment

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Recent

  • 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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