Search Results - "van Saders, Jennifer L."

Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the TESS continuous viewing zones and beyond by Mackereth, J Ted, Miglio, Andrea, Elsworth, Yvonne, Mosser, Benoit, Mathur, Savita, Garcia, Rafael A, Nardiello, Domenico, Hall, Oliver J, Vrard, Mathieu, Ball, Warrick H, Basu, Sarbani, Beaton, Rachael L, Beck, Paul G, Bergemann, Maria, Bossini, Diego, Casagrande, Luca, Campante, Tiago L, Chaplin, William J, Chiappini, Cristina, Girardi, Léo, Jørgensen, Andreas Christ Sølvsten, Khan, Saniya, Montalbán, Josefina, Nielsen, Martin B, Pinsonneault, Marc H, Rodrigues, Thaíse S, Serenelli, Aldo, Silva Aguirre, Victor, Stello, Dennis, Tayar, Jamie, Teske, Johanna, van Saders, Jennifer L, Willett, Emma

“…ABSTRACT The NASA Transiting Exoplanet Survey Satellite (NASA-TESS) mission presents a treasure trove for understanding the stars it observes and the Milky…”
Get full text

Revised Radii of Kepler Stars and Planets Using Gaia Data Release 2 by Berger, Travis A., Huber, Daniel, Gaidos, Eric, van Saders, Jennifer L.

“…One bottleneck for the exploitation of data from the Kepler mission for stellar astrophysics and exoplanet research has been the lack of precise radii and…”
Get full text

Forward Modeling of the Kepler Stellar Rotation Period Distribution: Interpreting Periods from Mixed and Biased Stellar Populations by van Saders, Jennifer L., Pinsonneault, Marc H., Barbieri, Mauro

“…Stellar surface rotation carries information about stellar parameters-particularly ages-and thus the large rotational data sets extracted from Kepler time…”
Get full text

Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars by van Saders, Jennifer L., Ceillier, Tugdual, Metcalfe, Travis S., Aguirre, Victor Silva, Pinsonneault, Marc H., García, Rafael A., Mathur, Savita, Davies, Guy R.

“…The age of a young to middle-aged star can be determined from how quickly or slowly it rotates, but the relationship breaks down for old stars; models now show…”
Get full text

Chemical Evolution in the Milky Way: Rotation-based Ages for APOGEE-Kepler Cool Dwarf Stars by Claytor, Zachary R., Saders, Jennifer L. van, Santos, Ângela R. G., García, Rafael A., Mathur, Savita, Tayar, Jamie, Pinsonneault, Marc H., Shetrone, Matthew

“…We use models of stellar angular momentum evolution to determine ages for ∼500 stars in the APOGEE-Kepler Cool Dwarfs sample. We focus on lower-main-sequence…”
Get full text

Core-envelope Decoupling Drives Radial Shear Dynamos in Cool Stars by Cao, Lyra, Pinsonneault, Marc H., van Saders, Jennifer L.

“…Abstract Differential rotation is thought to be responsible for the dynamo process in stars like our Sun, driving magnetic activity and starspots. We report…”
Get full text

TESS Stellar Rotation up to 80 Days in the Southern Continuous Viewing Zone by Claytor, Zachary R., van Saders, Jennifer L., Cao, Lyra, Pinsonneault, Marc H., Teske, Johanna, Beaton, Rachael L.

“…Abstract The Transiting Exoplanet Survey Satellite (TESS) mission delivers time-series photometry for millions of stars across the sky, offering a probe into…”
Get full text

Testing White Dwarf Age Estimates Using Wide Double White Dwarf Binaries from Gaia EDR3 by Heintz, Tyler M., Hermes, J. J., El-Badry, Kareem, Walsh, Charlie, van Saders, Jennifer L., Fields, C. E., Koester, Detlev

“…Abstract White dwarf (WD) stars evolve simply and predictably, making them reliable age indicators. However, self-consistent validation of the methods for…”
Get full text

Further Evidence of Modified Spin-down in Sun-like Stars: Pileups in the Temperature–Period Distribution by David, Trevor J., Angus, Ruth, Curtis, Jason L., van Saders, Jennifer L., Colman, Isabel L., Contardo, Gabriella, Lu, Yuxi, Zinn, Joel C.

“…Abstract We combine stellar surface rotation periods determined from NASA’s Kepler mission with spectroscopic temperatures to demonstrate the existence of…”
Get full text

The Origin of Weakened Magnetic Braking in Old Solar Analogs by Metcalfe, Travis S., Finley, Adam J., Kochukhov, Oleg, See, Victor, Ayres, Thomas R., Stassun, Keivan G., van Saders, Jennifer L., Clark, Catherine A., Godoy-Rivera, Diego, Ilyin, Ilya V., Pinsonneault, Marc H., Strassmeier, Klaus G., Petit, Pascal

“…Abstract The rotation rates of main-sequence stars slow over time as they gradually lose angular momentum to their magnetized stellar winds. The rate of…”
Get full text

Is [Y/Mg] a Reliable Age Diagnostic for FGK Stars? by Berger, Travis A., van Saders, Jennifer L., Huber, Daniel, Gaidos, Eric, Schlieder, Joshua E., Claytor, Zachary R.

“…Current spectroscopic surveys are producing large catalogs of chemical abundances for stars of all types. The yttrium-to-magnesium ratio, [Y/Mg], has emerged…”
Get full text

Stellar flares are far-ultraviolet luminous by Berger, Vera L, Hinkle, Jason T, Tucker, Michael A, Shappee, Benjamin J, van Saders, Jennifer L, Huber, Daniel, Reep, Jeffrey W

“…ABSTRACT We identify 182 flares on 158 stars within 100 pc of the Sun in both the near-ultraviolet (NUV; $1750\!-\!2750$ Å) and far-ultraviolet (FUV;…”
Get full text

A Test of Spectroscopic Age Estimates of White Dwarfs Using Wide WD+WD Binaries by Heintz, Tyler M., Hermes, J. J., Tremblay, P.-E., Ould Rouis, Lou Baya, Reding, Joshua S., Kaiser, B. C., van Saders, Jennifer L.

“…Abstract White dwarf stars have been used for decades as precise and accurate age indicators. This work presents a test of the reliability of white dwarf total…”
Get full text

Stellar Cruise Control: Weakened Magnetic Braking Leads to Sustained Rapid Rotation of Old Stars by Saunders, Nicholas, van Saders, Jennifer L., Lyttle, Alexander J., Metcalfe, Travis S., Li, Tanda, Davies, Guy R., Hall, Oliver J., Ball, Warrick H., Townsend, Richard, Creevey, Orlagh, Dodds, Curt

“…Abstract Despite a growing sample of precisely measured stellar rotation periods and ages, the strength of magnetic braking and the degree of departure from…”
Get full text

The Largest M Dwarf Flares from ASAS-SN by Schmidt, Sarah J., Shappee, Benjamin J., van Saders, Jennifer L., Stanek, K. Z., Brown, Jonathan S., Kochanek, C. S., Dong, Subo, Drout, Maria R., Frank, Stephan, Holoien, T. W.-S., Johnson, Sean, Madore, Barry F., Prieto, J. L., Seibert, Mark, Seidel, Marja K., Simonian, Gregory V. A.

“…The All-sky Automated Survey for Supernovae (ASAS-SN) is the only project in existence to scan the entire sky in optical light approximately every day,…”
Get full text

Erratum: “Testing White Dwarf Age Estimates Using Wide Double White Dwarf Binaries from Gaia EDR3” (2022, ApJ, 934, 148) by Heintz, Tyler M., Hermes, J. J., El-Badry, Kareem, Walsh, Charlie, van Saders, Jennifer L., Fields, C. E., Koester, Detlev

Get full text

TESS Asteroseismology of β Hydri: A Subgiant with a Born-again Dynamo by Metcalfe, Travis S., van Saders, Jennifer L., Huber, Daniel, Buzasi, Derek, García, Rafael A., Stassun, Keivan G., Basu, Sarbani, Breton, Sylvain N., Claytor, Zachary R., Corsaro, Enrico, Nielsen, Martin B., Ong, J. M. Joel, Saunders, Nicholas, Stokholm, Amalie, Bedding, Timothy R.

“…Abstract The solar-type subgiant β Hyi has long been studied as an old analog of the Sun. Although the rotation period has never been measured directly, it was…”
Get full text

A New Asteroseismic Kepler Benchmark Constrains the Onset of Weakened Magnetic Braking in Mature Sun-like Stars by Bhalotia, Vanshree, Huber, Daniel, van Saders, Jennifer L., Metcalfe, Travis S., Stassun, Keivan G., White, Timothy R., Aguirre Børsen-Koch, Víctor, Ball, Warrick H., Basu, Sarbani, Serenelli, Aldo M., Sawczynec, Erica, Guzik, Joyce A., Howard, Andrew W., Isaacson, Howard

“…Abstract Stellar spin down is a critical yet poorly understood component of stellar evolution. In particular, results from the Kepler Mission imply that mature…”
Get full text

Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and τ Cet by Metcalfe, Travis S., Strassmeier, Klaus G., Ilyin, Ilya V., van Saders, Jennifer L., Ayres, Thomas R., Finley, Adam J., Kochukhov, Oleg, Petit, Pascal, See, Victor, Stassun, Keivan G., Jeffers, Sandra V., Marsden, Stephen C., Morin, Julien, Vidotto, Aline A.

“…Abstract During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic…”
Get full text

Statistics of the Chemical Composition of Solar Analog Stars and Links to Planet Formation by Nibauer, Jacob, Baxter, Eric J., Jain, Bhuvnesh, Van Saders, Jennifer L., Beaton, Rachael L., Teske, Johanna K.

“…The Sun has been found to be depleted in refractory (rock-forming) elements relative to nearby solar analogs, suggesting a potential indicator of planet…”
Get full text