The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7

Research output: Contribution to journalArticlepeer-review

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The K2 Galactic Archaeology Program Data Release 2 : Asteroseismic results from campaigns 4, 6, & 7. / Zinn, Joel C.; Stello, Dennis; Elsworth, Yvonne; García, Rafael A.; Kallinger, Thomas; Mathur, Savita; Mosser, Benoît; Bugnet, Lisa; Jones, Caitlin; Hon, Marc; Sharma, Sanjib; Schönrich, Ralph; Warfield, Jack T.; Luger, Rodrigo; Pinsonneault, Marc H.; Johnson, Jennifer A.; Huber, Daniel; Aguirre, Victor Silva; Chaplin, William J.; Davies, Guy R.; Miglio, Andrea.

In: The Astrophysical Journal Supplement Series, Volume, Vol. 251, No. 2, 07.12.2020.

Research output: Contribution to journalArticlepeer-review

Harvard

Zinn, JC, Stello, D, Elsworth, Y, García, RA, Kallinger, T, Mathur, S, Mosser, B, Bugnet, L, Jones, C, Hon, M, Sharma, S, Schönrich, R, Warfield, JT, Luger, R, Pinsonneault, MH, Johnson, JA, Huber, D, Aguirre, VS, Chaplin, WJ, Davies, GR & Miglio, A 2020, 'The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7', The Astrophysical Journal Supplement Series, Volume, vol. 251, no. 2. https://doi.org/10.3847/1538-4365/abbee3

APA

Zinn, J. C., Stello, D., Elsworth, Y., García, R. A., Kallinger, T., Mathur, S., Mosser, B., Bugnet, L., Jones, C., Hon, M., Sharma, S., Schönrich, R., Warfield, J. T., Luger, R., Pinsonneault, M. H., Johnson, J. A., Huber, D., Aguirre, V. S., Chaplin, W. J., ... Miglio, A. (2020). The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7. The Astrophysical Journal Supplement Series, Volume, 251(2). https://doi.org/10.3847/1538-4365/abbee3

Vancouver

Author

Zinn, Joel C. ; Stello, Dennis ; Elsworth, Yvonne ; García, Rafael A. ; Kallinger, Thomas ; Mathur, Savita ; Mosser, Benoît ; Bugnet, Lisa ; Jones, Caitlin ; Hon, Marc ; Sharma, Sanjib ; Schönrich, Ralph ; Warfield, Jack T. ; Luger, Rodrigo ; Pinsonneault, Marc H. ; Johnson, Jennifer A. ; Huber, Daniel ; Aguirre, Victor Silva ; Chaplin, William J. ; Davies, Guy R. ; Miglio, Andrea. / The K2 Galactic Archaeology Program Data Release 2 : Asteroseismic results from campaigns 4, 6, & 7. In: The Astrophysical Journal Supplement Series, Volume. 2020 ; Vol. 251, No. 2.

Bibtex

@article{87b13ab2145342af8159be448b30b09b,
title = "The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7",
abstract = "Studies of Galactic structure and evolution have benefitted enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to best constrain Galactic models. Asteroseismology is the most precise method of providing such information for field star populations $\textit{en masse}$, but existing samples for the most part have been limited to a few narrow fields of view by the CoRoT and Kepler missions. In an effort to provide well-characterized stellar parameters across a wide range in Galactic position, we present the second data release of red giant asteroseismic parameters for the K2 Galactic Archaeology Program (GAP). We provide $\nu_{\mathrm{max}}$ and $\Delta \nu$ based on six independent pipeline analyses; first-ascent red giant branch (RGB) and red clump (RC) evolutionary state classifications from machine learning; and ready-to-use radius & mass coefficients, $\kappa_R$ & $\kappa_M$, which, when appropriately multiplied by a solar-scaled effective temperature factor, yield physical stellar radii and masses. In total, we report 4395 radius and mass coefficients, with typical uncertainties of $3.3\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $7.7\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RGB stars, and $5.0\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $10.5\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RC stars. We verify that the sample is nearly complete -- except for a dearth of stars with $\nu_{\mathrm{max}} \lesssim 10-20\mu$Hz -- by comparing to Galactic models and visual inspection. Our asteroseismic radii agree with radii derived from Gaia Data Release 2 parallaxes to within $2.2 \pm 0.3\%$ for RGB stars and $2.0 \pm 0.6\%$ for RC stars.",
keywords = "astro-ph.SR, astro-ph.GA",
author = "Zinn, {Joel C.} and Dennis Stello and Yvonne Elsworth and Garc{\'i}a, {Rafael A.} and Thomas Kallinger and Savita Mathur and Beno{\^i}t Mosser and Lisa Bugnet and Caitlin Jones and Marc Hon and Sanjib Sharma and Ralph Sch{\"o}nrich and Warfield, {Jack T.} and Rodrigo Luger and Pinsonneault, {Marc H.} and Johnson, {Jennifer A.} and Daniel Huber and Aguirre, {Victor Silva} and Chaplin, {William J.} and Davies, {Guy R.} and Andrea Miglio",
note = "Published in ApJS",
year = "2020",
month = dec,
day = "7",
doi = "10.3847/1538-4365/abbee3",
language = "English",
volume = "251",
journal = "The Astrophysical Journal Supplement Series, Volume",
number = "2",

}

RIS

TY - JOUR

T1 - The K2 Galactic Archaeology Program Data Release 2

T2 - Asteroseismic results from campaigns 4, 6, & 7

AU - Zinn, Joel C.

AU - Stello, Dennis

AU - Elsworth, Yvonne

AU - García, Rafael A.

AU - Kallinger, Thomas

AU - Mathur, Savita

AU - Mosser, Benoît

AU - Bugnet, Lisa

AU - Jones, Caitlin

AU - Hon, Marc

AU - Sharma, Sanjib

AU - Schönrich, Ralph

AU - Warfield, Jack T.

AU - Luger, Rodrigo

AU - Pinsonneault, Marc H.

AU - Johnson, Jennifer A.

AU - Huber, Daniel

AU - Aguirre, Victor Silva

AU - Chaplin, William J.

AU - Davies, Guy R.

AU - Miglio, Andrea

N1 - Published in ApJS

PY - 2020/12/7

Y1 - 2020/12/7

N2 - Studies of Galactic structure and evolution have benefitted enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to best constrain Galactic models. Asteroseismology is the most precise method of providing such information for field star populations $\textit{en masse}$, but existing samples for the most part have been limited to a few narrow fields of view by the CoRoT and Kepler missions. In an effort to provide well-characterized stellar parameters across a wide range in Galactic position, we present the second data release of red giant asteroseismic parameters for the K2 Galactic Archaeology Program (GAP). We provide $\nu_{\mathrm{max}}$ and $\Delta \nu$ based on six independent pipeline analyses; first-ascent red giant branch (RGB) and red clump (RC) evolutionary state classifications from machine learning; and ready-to-use radius & mass coefficients, $\kappa_R$ & $\kappa_M$, which, when appropriately multiplied by a solar-scaled effective temperature factor, yield physical stellar radii and masses. In total, we report 4395 radius and mass coefficients, with typical uncertainties of $3.3\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $7.7\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RGB stars, and $5.0\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $10.5\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RC stars. We verify that the sample is nearly complete -- except for a dearth of stars with $\nu_{\mathrm{max}} \lesssim 10-20\mu$Hz -- by comparing to Galactic models and visual inspection. Our asteroseismic radii agree with radii derived from Gaia Data Release 2 parallaxes to within $2.2 \pm 0.3\%$ for RGB stars and $2.0 \pm 0.6\%$ for RC stars.

AB - Studies of Galactic structure and evolution have benefitted enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to best constrain Galactic models. Asteroseismology is the most precise method of providing such information for field star populations $\textit{en masse}$, but existing samples for the most part have been limited to a few narrow fields of view by the CoRoT and Kepler missions. In an effort to provide well-characterized stellar parameters across a wide range in Galactic position, we present the second data release of red giant asteroseismic parameters for the K2 Galactic Archaeology Program (GAP). We provide $\nu_{\mathrm{max}}$ and $\Delta \nu$ based on six independent pipeline analyses; first-ascent red giant branch (RGB) and red clump (RC) evolutionary state classifications from machine learning; and ready-to-use radius & mass coefficients, $\kappa_R$ & $\kappa_M$, which, when appropriately multiplied by a solar-scaled effective temperature factor, yield physical stellar radii and masses. In total, we report 4395 radius and mass coefficients, with typical uncertainties of $3.3\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $7.7\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RGB stars, and $5.0\% \mathrm{\ (stat.)} \pm 1\% \mathrm{\ (syst.)}$ for $\kappa_R$ and $10.5\% \mathrm{\ (stat.)} \pm 2\% \mathrm{\ (syst.)}$ for $\kappa_M$ among RC stars. We verify that the sample is nearly complete -- except for a dearth of stars with $\nu_{\mathrm{max}} \lesssim 10-20\mu$Hz -- by comparing to Galactic models and visual inspection. Our asteroseismic radii agree with radii derived from Gaia Data Release 2 parallaxes to within $2.2 \pm 0.3\%$ for RGB stars and $2.0 \pm 0.6\%$ for RC stars.

KW - astro-ph.SR

KW - astro-ph.GA

U2 - 10.3847/1538-4365/abbee3

DO - 10.3847/1538-4365/abbee3

M3 - Article

VL - 251

JO - The Astrophysical Journal Supplement Series, Volume

JF - The Astrophysical Journal Supplement Series, Volume

IS - 2

ER -