Search Results - "Elsworth, Yvonne"

Testing asteroseismology with Gaia DR2: hierarchical models of the Red Clump by Hall, Oliver J, Davies, Guy R, Elsworth, Yvonne P, Miglio, Andrea, Bedding, Timothy R, Brown, Anthony G A, Khan, Saniya, Hawkins, Keith, García, Rafael A, Chaplin, William J, North, Thomas S H

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Update on the APOKASC analysis of Red Giants by Elsworth, Yvonne

“…APOKASC is a collaboration between APOGEE's spectroscopic survey in the near IR at Apache Point (SDSS) and Kepler Asteroseismic Science Consortium (KASC) for…”
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Kepler Asteroseismology Program: Introduction and First Results by Gilliland, Ronald L., Brown, Timothy M., Christensen-Dalsgaard, Jørgen, Kjeldsen, Hans, Aerts, Conny, Appourchaux, Thierry, Basu, Sarbani, Bedding, Timothy R., Chaplin, William J., Cunha, Margarida S., De Cat, Peter, De Ridder, Joris, Guzik, Joyce A., Handler, Gerald, Kawaler, Steven, Kiss, László, Kolenberg, Katrien, Kurtz, Donald W., Metcalfe, Travis S., Monteiro, Mario J. P. F. G., Szabó, Robert, Arentoft, Torben, Balona, Luis, Debosscher, Jonas, Elsworth, Yvonne P., Quirion, Pierre-Olivier, Stello, Dennis, Suárez, Juan Carlos, Borucki, William J., Jenkins, Jon M., Koch, David, Kondo, Yoji, Latham, David W., Rowe, Jason F., Steffen, Jason H.

“…Asteroseismology involves probing the interiors of stars and quantifying their global properties, such as radius and age, through observations of normal modes…”
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Fast core rotation in red-giant stars as revealed by gravity-dominated mixed modes by Beck, Paul G., Montalban, Josefina, Kallinger, Thomas, De Ridder, Joris, Aerts, Conny, García, Rafael A., Hekker, Saskia, Dupret, Marc-Antoine, Mosser, Benoit, Eggenberger, Patrick, Stello, Dennis, Elsworth, Yvonne, Frandsen, Søren, Carrier, Fabien, Hillen, Michel, Gruberbauer, Michael, Christensen-Dalsgaard, Jørgen, Miglio, Andrea, Valentini, Marica, Bedding, Timothy R., Kjeldsen, Hans, Girouard, Forrest R., Hall, Jennifer R., Ibrahim, Khadeejah A.

“…The core values of red giant stars The core rotation rate of a star, a key indicator of its evolutionary state, cannot be measured directly because the core is…”
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Fresh Insights on the Structure of the Solar Core by Basu, Sarbani, Chaplin, William J, Elsworth, Yvonne, New, Roger, Serenelli, Aldo M

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The APO-K2 Catalog. I. ∼7500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology by Schonhut-Stasik, Jessica, Zinn, Joel C., Stassun, Keivan G., Pinsonneault, Marc, Johnson, Jennifer A., Warfield, Jack T., Stello, Dennis, Elsworth, Yvonne, García, Rafael A., Mathur, Savita, Mosser, Benoit, Hon, Marc, Tayar, Jamie, Stringfellow, Guy S., Beaton, Rachael L., Jönsson, Henrik, Minniti, Dante

“…Abstract We present a catalog of fundamental stellar properties for ∼7500 evolved stars, including stellar radii and masses, determined from the combination of…”
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Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler by Doyle, Amanda P., Davies, Guy R., Smalley, Barry, Chaplin, William J., Elsworth, Yvonne

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Nature versus nurture: distinguishing effects from stellar processing and chemical evolution on carbon and nitrogen in red giant stars by Roberts, John D, Pinsonneault, Marc H, Johnson, Jennifer A, Zinn, Joel C, Weinberg, David H, Vrard, Mathieu, Tayar, Jamie, Stello, Dennis, Mosser, Benoît, Johnson, James W, Cao, Kaili, Stassun, Keivan G, Stringfellow, Guy S, Serenelli, Aldo, Mathur, Savita, Hekker, Saskia, García, Rafael A, Elsworth, Yvonne P, Corsaro, Enrico

“…ABSTRACT The surface [C/N] ratios of evolved giants are strongly affected by the first dredge-up (FDU) of nuclear-processed material from stellar cores. C and…”
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ASTEROSEISMOLOGY OF THE OPEN CLUSTERS NGC 6791, NGC 6811, AND NGC 6819 FROM 19 MONTHS OF KEPLER PHOTOMETRY by Corsaro, Enrico, STELLO, DENNIS, Huber, Daniel, Bedding, Timothy R, Bonanno, Alfio, Brogaard, Karsten, Kallinger, Thomas, BENOMAR, OTHMAN, White, Timothy R, Mosser, Benoit

“…We studied solar-like oscillations in 115 red giants in the three open clusters, NGC 6791, NGC 6811, and NGC 6819, based on photometric data covering more than…”
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Evidence for compact binary systems around Kepler red giants by Colman, Isabel L., Huber, Daniel, Bedding, Timothy R., Kuszlewicz, James S., Yu, Jie, Beck, Paul G., Elsworth, Yvonne, García, Rafael A., Kawaler, Steven D., Mathur, Savita, Stello, Dennis, White, Timothy R.

“…Abstract We present an analysis of 168 oscillating red giants from NASA's Kepler mission that exhibit anomalous peaks in their Fourier amplitude spectra. These…”
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Lifetimes and rotation within the solar mean magnetic field by Ross, Eddie, Chaplin, William J, Hale, Steven J, Howe, Rachel, Elsworth, Yvonne P, Davies, Guy R, Nielsen, Martin Bo

“…ABSTRACT We have used very high-cadence (sub-minute) observations of the solar mean magnetic field (SMMF) from the Birmingham Solar Oscillations Network…”
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The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way by Warfield, Jack T., Zinn, Joel C., Schonhut-Stasik, Jessica, Johnson, James W., Pinsonneault, Marc H., Johnson, Jennifer A., Stello, Dennis, Beaton, Rachael L., Elsworth, Yvonne, García, Rafael A., Mathur, Savita, Mosser, Benoît, Serenelli, Aldo, Tayar, Jamie

“…Abstract We present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology…”
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An Asteroseismic Membership Study of the Red Giants in Three Open Clusters Observed by Kepler: NGC 6791, NGC 6819, and NGC 6811 by Stello, Dennis, Meibom, Søren, Gilliland, Ronald L, Grundahl, Frank, Hekker, Saskia, Mosser, Benoît, Kallinger, Thomas, Mathur, Savita, García, Rafael A, Huber, Daniel, Basu, Sarbani, Bedding, Timothy R, Brogaard, Karsten, Chaplin, William J, Elsworth, Yvonne P, Molenda-Żakowicz, Joanna, Szabó, Robert, Still, Martin, Jenkins, Jon M, Christensen-Dalsgaard, Jørgen, Kjeldsen, Hans, Serenelli, Aldo M, Wohler, Bill

“…Studying star clusters offers significant advances in stellar astrophysics due to the combined power of having many stars with essentially the same distance,…”
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Spatial incoherence of solar granulation: a global analysis using BiSON 2B data by Lund, Mikkel N., Chaplin, William J., Hale, Steven J., Davies, Guy R., Elsworth, Yvonne P., Howe, Rachel

“…Abstract A poor understanding of the impact of convective turbulence in the outer layers of the Sun and Sun-like stars challenges the advance towards an…”
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Evolutionary states of red-giant stars from grid-based modelling by Hekker, Saskia, Elsworth, Yvonne, Basu, Sarbani, Bellinger, Earl

“…From its surface properties it can be difficult to determine whether a red-giant star is in its heliumcore-burning phase or only burning hydrogen in a shell…”
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Stellar Spin-Orbit Misalignment in a Multiplanet System by Huber, Daniel, Carter, Joshua A., Barbieri, Mauro, Miglio, Andrea, Deck, Katherine M., Fabrycky, Daniel C., Montet, Benjamin T., Buchhave, Lars A., Chaplin, William J., Hekker, Saskia, Montalbán, Josefina, Sanchis-Ojeda, Roberto, Basu, Sarbani, Bedding, Timothy R., Campante, Tiago L., Christensen-Dalsgaard, Jørgen, Elsworth, Yvonne P., Stello, Dennis, Arentoft, Torben, Ford, Eric B., Gilliland, Ronald L., Handberg, Rasmus, Howard, Andrew W., Isaacson, Howard, Johnson, John Asher, Karoff, Christoffer, Kawaler, Steven D., Kjeldsen, Hans, Latham, David W., Lund, Mikkel N., Lundkvist, Mia, Marcy, Geoffrey W., Metcalfe, Travis S., Aguirre, Victor Silva, Winn, Joshua N.

“…Stars hosting hot Jupiters are often observed to have high obliquities, whereas stars with multiple coplanar planets have been seen to have low obliquities…”
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Presence of mixed modes in red giants in binary systems by Themeßl, Nathalie, Hekker, Saskia, Elsworth, Yvonne

“…The frequencies of oscillation modes in stars contain valueable information about the stellar properties. In red giants the frequency spectrum also contains…”
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A new method for the asteroseismic determination of the evolutionary state of red-giant stars by Elsworth, Yvonne, Hekker, Saskia, Basu, Sarbani, R. Davies, Guy

“…Abstract Determining the ages of red-giant stars is a key problem in stellar astrophysics. One of the difficulties in this determination is to know the…”
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Determination of Stellar Radii from Asteroseismic Data by Basu, Sarbani, Chaplin, William J, Elsworth, Yvonne

“…The NASA Kepler mission is designed to find planets through transits. Accurate and precise radii of the detected planets depend on knowing the radius of the…”
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An In-depth Study of Grid-based Asteroseismic Analysis by Gai, Ning, Basu, Sarbani, Chaplin, William J, Elsworth, Yvonne

“…NASA's Kepler mission is providing basic asteroseismic data for hundreds of stars. One of the more common ways of determining stellar characteristics from…”
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