Search Results - "Tofflemire, Benjamin M."
-
1
A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System
Published in The Astrophysical journal (01-07-2023)“…Abstract Young planets (<1 Gyr) are helpful for studying the physical processes occurring at the early stage of planet evolution. TOI-251 b is a recently…”
Get full text
Journal Article -
2
Correlating Changes in Spot Filling Factors with Stellar Rotation: The Case of LkCa 4
Published in The Astrophysical journal (01-03-2023)“…Abstract We present a multi-epoch spectroscopic study of LkCa 4, a heavily spotted non-accreting T Tauri star. Using SpeX at NASA’s Infrared Telescope Facility…”
Get full text
Journal Article -
3
SPYGLASS. II. The Multigenerational and Multiorigin Star Formation History of Cepheus Far North
Published in The Astrophysical journal (01-12-2022)“…Abstract Young stellar populations provide a record of past star formation, and by establishing their members’ dynamics and ages, it is possible to reconstruct…”
Get full text
Journal Article -
4
The Strength and Variability of the Helium 10830 Å Triplet in Young Stars, with Implications for Exosphere Detection
Published in The Astronomical journal (01-02-2024)“…Abstract Young exoplanets trace planetary evolution, in particular the atmospheric mass loss that is most dynamic in youth. However, the high activity level of…”
Get full text
Journal Article -
5
Sites of Planet Formation in Binary Systems. I. Evidence for Disk−Orbit Alignment in the Close Binary FO Tau
Published in The Astronomical journal (01-05-2024)“…Abstract Close binary systems present challenges to planet formation. As binary separations decrease, so do the occurrence rates of protoplanetary disks in…”
Get full text
Journal Article -
6
TESS Investigation—Demographics of Young Exoplanets (TI-DYE). II. A Second Giant Planet in the 17 Myr System HIP 67522
Published in Astrophysical journal. Letters (01-09-2024)“…Abstract The youngest (<50 Myr) planets are vital to understand planet formation and early evolution. The 17 Myr system HIP 67522 is already known to host a…”
Get full text
Journal Article -
7
A Low-mass, Pre-main-sequence Eclipsing Binary in the 40 Myr Columba Association—Fundamental Stellar Parameters and Modeling the Effect of Star Spots
Published in The Astronomical journal (01-02-2023)“…Abstract Young eclipsing binaries (EBs) are powerful probes of early stellar evolution. Current models are unable to simultaneously reproduce the measured and…”
Get full text
Journal Article -
8
Orbital Parameter Determination for Wide Stellar Binary Systems in the Age of Gaia
Published in The Astrophysical journal (01-05-2020)“…The orbits of binary stars and planets, particularly eccentricities and inclinations, encode the angular momentum within these systems. Within stellar multiple…”
Get full text
Journal Article -
9
Observationally Constraining the Starspot Properties of Magnetically Active M67 Sub-subgiant S1063
Published in The Astrophysical journal (01-01-2022)“…Abstract Our understanding of the impact of magnetic activity on stellar evolution continues to unfold. This impact is seen in sub-subgiant stars, defined to…”
Get full text
Journal Article -
10
Revealing the Field Sub-subgiant Population Using a Catalog of Active Giant Stars and Gaia EDR3
Published in The Astrophysical journal (01-03-2022)“…Abstract Sub-subgiant stars (SSGs) fall below the subgiant branch and/or red of the giant branch in open and globular clusters, an area of the color–magnitude…”
Get full text
Journal Article -
11
INTERSTELLAR SONIC AND ALFVÉNIC MACH NUMBERS AND THE TSALLIS DISTRIBUTION
Published in The Astrophysical journal (20-07-2011)“…In an effort to characterize the Mach numbers of interstellar medium (ISM) magnetohydrodynamic (MHD) turbulence, we study the probability distribution…”
Get full text
Journal Article -
12
Transit Hunt for Young and Maturing Exoplanets (THYME). VIII. A Pleiades-age Association Harboring Two Transiting Planetary Systems from Kepler
Published in The Astronomical journal (01-09-2022)“…Abstract Young planets provide a window into the early stages and evolution of planetary systems. Ideal planets for such research are in coeval associations,…”
Get full text
Journal Article -
13
The IGRINS YSO Survey II: Veiling Spectra of Pre-main-sequence Stars in Taurus-Auriga
Published in The Astrophysical journal (01-11-2021)“…Abstract We present measurements of the H- and K -band veiling for 141 young stellar objects (YSOs) in the Taurus-Auriga star-forming region using…”
Get full text
Journal Article -
14
A Lithium Depletion Age for the Carina Association
Published in The Astronomical journal (01-12-2023)“…Abstract The dispersed remnants of stellar nurseries, stellar associations, provide unparalleled samples of coeval stars critical for studies of stellar and…”
Get full text
Journal Article -
15
ACCRETION AND MAGNETIC RECONNECTION IN THE CLASSICAL T TAURI BINARY DQ TAU
Published in The Astrophysical journal (20-01-2017)“…ABSTRACT The theory of binary star formation predicts that close binaries (a < 100 au) will experience periodic pulsed accretion events as streams of material…”
Get full text
Journal Article -
16
An Eclipsing Binary Comprising Two Active Red Stragglers of Identical Mass and Synchronized Rotation: A Post-mass-transfer System or Just Born That Way?
Published in The Astrophysical journal (01-06-2023)“…Abstract We report the discovery of 2M0056–08 as an equal-mass eclipsing binary (EB), comprising two red straggler stars (RSSs) with an orbital period of 33.9…”
Get full text
Journal Article -
17
A Mini-Neptune from TESS and CHEOPS Around the 120 Myr Old AB Dor Member HIP 94235
Published in The Astronomical journal (01-06-2022)“…Abstract The Transiting Exoplanet Survey Satellite (TESS) mission has enabled discoveries of the brightest transiting planet systems around young stars. These…”
Get full text
Journal Article -
18
TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group
Published in The Astronomical journal (01-02-2024)“…Abstract Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD…”
Get full text
Journal Article -
19
TESS Hunt for Young and Maturing Exoplanets (THYME). X. A Two-planet System in the 210 Myr MELANGE-5 Association
Published in The Astronomical journal (01-07-2024)“…Abstract Young (<500 Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multiplanet configurations are…”
Get full text
Journal Article Web Resource -
20
X-RAY GRATING OBSERVATIONS OF RECURRENT NOVA T PYXIDIS DURING THE 2011 OUTBURST
Published in The Astrophysical journal (10-12-2013)“…The recurrent nova T Pyx was observed with the X-ray gratings of Chandra and XMM-Newton, 210 and 235 days, respectively, after the discovery of the 2011 April…”
Get full text
Journal Article