TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949

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TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949. / Campante, Tiago L.; Corsaro, Enrico; Lund, Mikkel N.; Mosser, Benoît; Serenelli, Aldo; Veras, Dimitri; Adibekyan, Vardan; Antia, H. M.; Ball, Warrick; Basu, Sarbani; Bedding, Timothy R.; Bossini, Diego; Davies, Guy R.; Mena, Elisa Delgado; García, Rafael A.; Handberg, Rasmus; Hon, Marc; Kane, Stephen R.; Kawaler, Steven D.; Kuszlewicz, James S.; Lucas, Miles; Mathur, Savita; Nardetto, Nicolas; Nielsen, Martin B.; Pinsonneault, Marc H.; Reffert, Sabine; Aguirre, Víctor Silva; Stassun, Keivan G.; Stello, Dennis; Stock, Stephan; Vrard, Mathieu; Yıldız, Mutlu; Chaplin, William J.; Huber, Daniel; Bean, Jacob L.; Orhan, Zeynep Çelik; Cunha, Margarida S.; Christensen-Dalsgaard, Jørgen; Kjeldsen, Hans; Metcalfe, Travis S.; Miglio, Andrea; Monteiro, Mário J. P. F. G.; Nsamba, Benard; Örtel, Sibel; Pereira, Filipe; Sousa, Sérgio G.; Tsantaki, Maria; Turnbull, Margaret C.

In: The Astrophysical Journal, Vol. 885, No. 1, 29.10.2019.

Research output: Contribution to journalArticlepeer-review

Harvard

Campante, TL, Corsaro, E, Lund, MN, Mosser, B, Serenelli, A, Veras, D, Adibekyan, V, Antia, HM, Ball, W, Basu, S, Bedding, TR, Bossini, D, Davies, GR, Mena, ED, García, RA, Handberg, R, Hon, M, Kane, SR, Kawaler, SD, Kuszlewicz, JS, Lucas, M, Mathur, S, Nardetto, N, Nielsen, MB, Pinsonneault, MH, Reffert, S, Aguirre, VS, Stassun, KG, Stello, D, Stock, S, Vrard, M, Yıldız, M, Chaplin, WJ, Huber, D, Bean, JL, Orhan, ZÇ, Cunha, MS, Christensen-Dalsgaard, J, Kjeldsen, H, Metcalfe, TS, Miglio, A, Monteiro, MJPFG, Nsamba, B, Örtel, S, Pereira, F, Sousa, SG, Tsantaki, M & Turnbull, MC 2019, 'TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949', The Astrophysical Journal, vol. 885, no. 1. https://doi.org/10.3847/1538-4357/ab44a8

APA

Campante, T. L., Corsaro, E., Lund, M. N., Mosser, B., Serenelli, A., Veras, D., Adibekyan, V., Antia, H. M., Ball, W., Basu, S., Bedding, T. R., Bossini, D., Davies, G. R., Mena, E. D., García, R. A., Handberg, R., Hon, M., Kane, S. R., Kawaler, S. D., ... Turnbull, M. C. (2019). TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949. The Astrophysical Journal, 885(1). https://doi.org/10.3847/1538-4357/ab44a8

Vancouver

Author

Campante, Tiago L. ; Corsaro, Enrico ; Lund, Mikkel N. ; Mosser, Benoît ; Serenelli, Aldo ; Veras, Dimitri ; Adibekyan, Vardan ; Antia, H. M. ; Ball, Warrick ; Basu, Sarbani ; Bedding, Timothy R. ; Bossini, Diego ; Davies, Guy R. ; Mena, Elisa Delgado ; García, Rafael A. ; Handberg, Rasmus ; Hon, Marc ; Kane, Stephen R. ; Kawaler, Steven D. ; Kuszlewicz, James S. ; Lucas, Miles ; Mathur, Savita ; Nardetto, Nicolas ; Nielsen, Martin B. ; Pinsonneault, Marc H. ; Reffert, Sabine ; Aguirre, Víctor Silva ; Stassun, Keivan G. ; Stello, Dennis ; Stock, Stephan ; Vrard, Mathieu ; Yıldız, Mutlu ; Chaplin, William J. ; Huber, Daniel ; Bean, Jacob L. ; Orhan, Zeynep Çelik ; Cunha, Margarida S. ; Christensen-Dalsgaard, Jørgen ; Kjeldsen, Hans ; Metcalfe, Travis S. ; Miglio, Andrea ; Monteiro, Mário J. P. F. G. ; Nsamba, Benard ; Örtel, Sibel ; Pereira, Filipe ; Sousa, Sérgio G. ; Tsantaki, Maria ; Turnbull, Margaret C. / TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949. In: The Astrophysical Journal. 2019 ; Vol. 885, No. 1.

Bibtex

@article{619952fb582f4c6f93b189b5f588e0a6,
title = "TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949",
abstract = " The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables asteroseismology of solar-type and red-giant stars, which exhibit convection-driven, solar-like oscillations. Simulations predict that TESS will detect solar-like oscillations in nearly 100 stars already known to host planets. In this paper, we present an asteroseismic analysis of the known red-giant host stars HD 212771 and HD 203949, both systems having a long-period planet detected through radial velocities. These are the first detections of oscillations in previously known exoplanet-host stars by TESS, further showcasing the mission's potential to conduct asteroseismology of red-giant stars. We estimate the fundamental properties of both stars through a grid-based modeling approach that uses global asteroseismic parameters as input. We discuss the evolutionary state of HD 203949 in depth and note the large discrepancy between its asteroseismic mass ($M_\ast = 1.23 \pm 0.15\,{\rm M}_\odot$ if on the red-giant branch or $M_\ast = 1.00 \pm 0.16\,{\rm M}_\odot$ if in the clump) and the mass quoted in the discovery paper ($M_\ast = 2.1 \pm 0.1\,{\rm M}_\odot$), implying a change $>30\,\%$ in the planet's mass. Assuming HD 203949 to be in the clump, we investigate the planet's past orbital evolution and discuss how it could have avoided engulfment at the tip of the red-giant branch. Finally, HD 212771 was observed by K2 during its Campaign 3, thus allowing for a preliminary comparison of the asteroseismic performances of TESS and K2. We estimate the ratio of the observed oscillation amplitudes for this star to be $A_{\rm max}^{\rm TESS}/A_{\rm max}^{\rm K2} = 0.75 \pm 0.14$, consistent with the expected ratio of $\sim0.85$ due to the redder bandpass of TESS. ",
keywords = "astro-ph.SR, astro-ph.EP",
author = "Campante, {Tiago L.} and Enrico Corsaro and Lund, {Mikkel N.} and Beno{\^i}t Mosser and Aldo Serenelli and Dimitri Veras and Vardan Adibekyan and Antia, {H. M.} and Warrick Ball and Sarbani Basu and Bedding, {Timothy R.} and Diego Bossini and Davies, {Guy R.} and Mena, {Elisa Delgado} and Garc{\'i}a, {Rafael A.} and Rasmus Handberg and Marc Hon and Kane, {Stephen R.} and Kawaler, {Steven D.} and Kuszlewicz, {James S.} and Miles Lucas and Savita Mathur and Nicolas Nardetto and Nielsen, {Martin B.} and Pinsonneault, {Marc H.} and Sabine Reffert and Aguirre, {V{\'i}ctor Silva} and Stassun, {Keivan G.} and Dennis Stello and Stephan Stock and Mathieu Vrard and Mutlu Yıldız and Chaplin, {William J.} and Daniel Huber and Bean, {Jacob L.} and Orhan, {Zeynep {\c C}elik} and Cunha, {Margarida S.} and J{\o}rgen Christensen-Dalsgaard and Hans Kjeldsen and Metcalfe, {Travis S.} and Andrea Miglio and Monteiro, {M{\'a}rio J. P. F. G.} and Benard Nsamba and Sibel {\"O}rtel and Filipe Pereira and Sousa, {S{\'e}rgio G.} and Maria Tsantaki and Turnbull, {Margaret C.}",
note = "Accepted for publication in ApJ; 17 pages, 4 figures, 3 tables",
year = "2019",
month = oct,
day = "29",
doi = "10.3847/1538-4357/ab44a8",
language = "English",
volume = "885",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "Institute of Physics Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949

AU - Campante, Tiago L.

AU - Corsaro, Enrico

AU - Lund, Mikkel N.

AU - Mosser, Benoît

AU - Serenelli, Aldo

AU - Veras, Dimitri

AU - Adibekyan, Vardan

AU - Antia, H. M.

AU - Ball, Warrick

AU - Basu, Sarbani

AU - Bedding, Timothy R.

AU - Bossini, Diego

AU - Davies, Guy R.

AU - Mena, Elisa Delgado

AU - García, Rafael A.

AU - Handberg, Rasmus

AU - Hon, Marc

AU - Kane, Stephen R.

AU - Kawaler, Steven D.

AU - Kuszlewicz, James S.

AU - Lucas, Miles

AU - Mathur, Savita

AU - Nardetto, Nicolas

AU - Nielsen, Martin B.

AU - Pinsonneault, Marc H.

AU - Reffert, Sabine

AU - Aguirre, Víctor Silva

AU - Stassun, Keivan G.

AU - Stello, Dennis

AU - Stock, Stephan

AU - Vrard, Mathieu

AU - Yıldız, Mutlu

AU - Chaplin, William J.

AU - Huber, Daniel

AU - Bean, Jacob L.

AU - Orhan, Zeynep Çelik

AU - Cunha, Margarida S.

AU - Christensen-Dalsgaard, Jørgen

AU - Kjeldsen, Hans

AU - Metcalfe, Travis S.

AU - Miglio, Andrea

AU - Monteiro, Mário J. P. F. G.

AU - Nsamba, Benard

AU - Örtel, Sibel

AU - Pereira, Filipe

AU - Sousa, Sérgio G.

AU - Tsantaki, Maria

AU - Turnbull, Margaret C.

N1 - Accepted for publication in ApJ; 17 pages, 4 figures, 3 tables

PY - 2019/10/29

Y1 - 2019/10/29

N2 - The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables asteroseismology of solar-type and red-giant stars, which exhibit convection-driven, solar-like oscillations. Simulations predict that TESS will detect solar-like oscillations in nearly 100 stars already known to host planets. In this paper, we present an asteroseismic analysis of the known red-giant host stars HD 212771 and HD 203949, both systems having a long-period planet detected through radial velocities. These are the first detections of oscillations in previously known exoplanet-host stars by TESS, further showcasing the mission's potential to conduct asteroseismology of red-giant stars. We estimate the fundamental properties of both stars through a grid-based modeling approach that uses global asteroseismic parameters as input. We discuss the evolutionary state of HD 203949 in depth and note the large discrepancy between its asteroseismic mass ($M_\ast = 1.23 \pm 0.15\,{\rm M}_\odot$ if on the red-giant branch or $M_\ast = 1.00 \pm 0.16\,{\rm M}_\odot$ if in the clump) and the mass quoted in the discovery paper ($M_\ast = 2.1 \pm 0.1\,{\rm M}_\odot$), implying a change $>30\,\%$ in the planet's mass. Assuming HD 203949 to be in the clump, we investigate the planet's past orbital evolution and discuss how it could have avoided engulfment at the tip of the red-giant branch. Finally, HD 212771 was observed by K2 during its Campaign 3, thus allowing for a preliminary comparison of the asteroseismic performances of TESS and K2. We estimate the ratio of the observed oscillation amplitudes for this star to be $A_{\rm max}^{\rm TESS}/A_{\rm max}^{\rm K2} = 0.75 \pm 0.14$, consistent with the expected ratio of $\sim0.85$ due to the redder bandpass of TESS.

AB - The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables asteroseismology of solar-type and red-giant stars, which exhibit convection-driven, solar-like oscillations. Simulations predict that TESS will detect solar-like oscillations in nearly 100 stars already known to host planets. In this paper, we present an asteroseismic analysis of the known red-giant host stars HD 212771 and HD 203949, both systems having a long-period planet detected through radial velocities. These are the first detections of oscillations in previously known exoplanet-host stars by TESS, further showcasing the mission's potential to conduct asteroseismology of red-giant stars. We estimate the fundamental properties of both stars through a grid-based modeling approach that uses global asteroseismic parameters as input. We discuss the evolutionary state of HD 203949 in depth and note the large discrepancy between its asteroseismic mass ($M_\ast = 1.23 \pm 0.15\,{\rm M}_\odot$ if on the red-giant branch or $M_\ast = 1.00 \pm 0.16\,{\rm M}_\odot$ if in the clump) and the mass quoted in the discovery paper ($M_\ast = 2.1 \pm 0.1\,{\rm M}_\odot$), implying a change $>30\,\%$ in the planet's mass. Assuming HD 203949 to be in the clump, we investigate the planet's past orbital evolution and discuss how it could have avoided engulfment at the tip of the red-giant branch. Finally, HD 212771 was observed by K2 during its Campaign 3, thus allowing for a preliminary comparison of the asteroseismic performances of TESS and K2. We estimate the ratio of the observed oscillation amplitudes for this star to be $A_{\rm max}^{\rm TESS}/A_{\rm max}^{\rm K2} = 0.75 \pm 0.14$, consistent with the expected ratio of $\sim0.85$ due to the redder bandpass of TESS.

KW - astro-ph.SR

KW - astro-ph.EP

U2 - 10.3847/1538-4357/ab44a8

DO - 10.3847/1538-4357/ab44a8

M3 - Article

VL - 885

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 1

ER -