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TESS Hunt for Young and Maturing Exoplanets (THYME) IX: a 27 Myr extended population of Lower-Centaurus Crux with a transiting two-planet system
Mackenna L. Wood, Andrew W. Mann, Madyson G. Barber +35
We report the discovery and characterization of a nearby (~ 85 pc), older (27 +/- 3 Myr), distributed stellar population near Lower-Centaurus-Crux (LCC), initially identified by se…
Variability Catalog of Stars Observed During the TESS Prime Mission
Tara Fetherolf, Joshua Pepper, Emilie Simpson +10
During its 2-year Prime Mission, TESS observed over 232,000 stars at a 2-min cadence across ~70% of the sky. These data provide a record of photometric variability across a range o…
TOI-2119: A transiting brown dwarf orbiting an active M-dwarf from NASA's TESS mission
Theron W. Carmichael, Jonathan M. Irwin, Felipe Murgas +27
We report the discovery of TOI-2119b, a transiting brown dwarf (BD) that orbits and is completely eclipsed by an active M-dwarf star. Using light curve data from the Transiting Exo…
A 20-Second Cadence View of Solar-Type Stars and Their Planets with TESS: Asteroseismology of Solar Analogs and a Re-characterization of pi Men c
Daniel Huber, Timothy R. White, Travis S. Metcalfe +50
We present an analysis of the first 20-second cadence light curves obtained by the TESS space telescope during its extended mission. We find a precision improvement of 20-second da…
TIC 278956474: Two close binaries in one young quadruple system, identified by \textit{TESS}
Pamela Rowden, Tamás Borkovits, Jon M. Jenkins +25
We have identified a quadruple system with two close eclipsing binaries in TESS data. The object is unresolved in Gaia and appears as a single source at parallax 1.08~0.01 mas…
Kepler photometry and optical spectroscopy of the ZZ Lep central star of the Planetary Nebula NGC 6826: rotational and wind variability
G. Handler, R. K. Prinja, M. A. Urbaneja +3
We present three years of long-cadence and over one year of short-cadence photometry of the central star of the Planetary Nebula NGC 6826 obtained with the Kepler spacecraft, and t…
Low-frequency variations of unknown origin in the Kepler Delta Scuti star KIC 5988140 = HD 188774
P. Lampens, A. Tkachenko, H. Lehmann +9
We used high-quality Kepler photometry and spectroscopic data to investigate the Kepler binary candidate KIC 5988140. Using the spectrum synthesis method, we derived the fundamenta…
Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
V. Silva Aguirre, L. Casagrande, S. Basu +24
Accurately determining the properties of stars is of prime importance for characterizing stellar populations in our Galaxy. The field of asteroseismology has been thought to be par…
A Class of Eccentric Binaries with Dynamic Tidal Distortions Discovered with Kepler
Susan E. Thompson, Mark Everett, Fergal Mullally +10
We have discovered a class of eccentric binary systems within the Kepler data archive that have dynamic tidal distortions and tidally-induced pulsations. Each has a uniquely shaped…
A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler
S. Mathur, T. S. Metcalfe, M. Woitaszek +39
Asteroseismology with the Kepler space telescope is providing not only an improved characterization of exoplanets and their host stars, but also a new window on stellar structure a…
HD 181068: A Red Giant in a Triply-Eclipsing Compact Hierarchical Triple System
A. Derekas, L. L. Kiss, T. Borkovits +41
Hierarchical triple systems comprise a close binary and a more distant component. They are important for testing theories of star formation and of stellar evolution in the presence…
Amplitudes of solar-like oscillations: constraints from red giants in open clusters observed by Kepler
D. Stello, D. Huber, T. Kallinger +20
Scaling relations that link asteroseismic quantities to global stellar properties are important for gaining understanding of the intricate physics that underpins stellar pulsation.…
The architecture of the hierarchical triple star KOI 928 from eclipse timing variations seen in Kepler photometry
J. H. Steffen, S. N. Quinn, W. J. Borucki +25
We present a hierarchical triple star system (KIC 9140402) where a low mass eclipsing binary orbits a more massive third star. The orbital period of the binary (4.98829 Days) is de…
The Kepler Cluster Study: Stellar Rotation in NGC6811
Søren Meibom, Sydney A. Barnes, David W. Latham +17
We present rotation periods for 71 single dwarf members of the open cluster NGC6811 determined using photometry from NASA's Kepler Mission. The results are the first from The Keple…
Kepler photometry of KIC 10661783: a binary star with total eclipses and delta Scuti pulsations
John Southworth, W. Zima, C. Aerts +14
We present Kepler satellite photometry of KIC 10661783, a short-period binary star system which shows total eclipses and multi-periodic delta Scuti pulsations. A frequency analysis…
Does Kepler unveil the mystery of the Blazhko effect? First detection of period doubling in Kepler Blazhko RR Lyrae stars
R. Szabó, Z. Kolláth, L. Molnár +15
The first detection of the period doubling phenomenon is reported in the Kepler RR Lyrae stars RR Lyr, V808 Cyg and V355 Lyr. Interestingly, all these pulsating stars show Blazhko…
Initial Characteristics of Kepler Short Cadence Data
Ronald L. Gilliland, J. M. Jenkins, W. J. Borucki +12
The Kepler Mission offers two options for observations -- either Long Cadence (LC) used for the bulk of core mission science, or Short Cadence (SC) which is used for applications s…