521 citations · 3.8k across the 57 of their papers we have counts for
60 papers
Evaluating Rotation Periods of M Dwarfs Across the Ages
Mark Popinchalk, Jacqueline K. Faherty, Rocio Kiman +5
In this work we examine M dwarf rotation rates at a range of ages to establish benchmarks for Mdwarf gyrochronology. This work includes a sample of 713 spectroscopically-classified…
Calibration of the Halpha Age-Activity relation for M dwarfs
Rocio Kiman, Jacqueline K. Faherty, Kelle L. Cruz +6
In this work, we calibrate the relationship between Halpha emission and M dwarf ages. We compile a sample of 892 M dwarfs with Halpha equivalent width (HaEW) measurements from the…
Weather on Other Worlds. V. The Three Most Rapidly Rotating Ultra-Cool Dwarfs
Megan E. Tannock, Stanimir Metchev, Aren Heinze +7
We present the discovery of rapid photometric variability in three ultra-cool dwarfs from long-duration monitoring with the Spitzer Space Telescope. The T7, L3.5, and L8 dwarfs hav…
Discovery of an Edge-on Circumstellar Debris Disk Around BD+45598: a Newly Identifed Member of the Pictoris Moving Group
Sasha Hinkley, Elisabeth C. Matthews, Charlène Lefevre +24
We report the discovery of a circumstellar debris disk viewed nearly edge-on and associated with the young, K1 star BD+45598 using high-contrast imaging at 2.2m obtain…
Direct imaging of sub-Jupiter mass exoplanets with James Webb Space Telescope coronagraphy
Aarynn L. Carter, Sasha Hinkley, Mariangela Bonavita +7
The James Webb Space Telescope (JWST), currently scheduled to launch in 2021, will dramatically advance our understanding of exoplanetary systems with its ability to directly image…
The Tau Association: A 60 Myr-Old Coeval Group at 150 pc from the Sun
Jonathan Gagné, Trevor J. David, Eric E. Mamajek +3
[Abbreviated] We present an analysis of the newly identified Tau Association (MUTA) of young stars at 150 pc from the Sun that is part of the large Cas-Tau structure, co…
EarthFinder Probe Mission Concept Study: Characterizing nearby stellar exoplanet systems with Earth-mass analogs for future direct imaging
Peter Plavchan, Gautam Vasisht, Chas Beichman +52
EarthFinder is a NASA Astrophysics Probe mission concept selected for study as input to the 2020 Astrophysics National Academies Decadal Survey. The EarthFinder concept is based on…
The Low-Mass Members of the Ursa Major Association
Jonathan Gagné, Jacqueline K. Faherty, Mark Popinchalk
We present a set of 5 over-densities in spatial-kinematic space previously identified by Kounkel & Covey (2019) that may constitute extended tidal tails associated with the nearby,…
Birth Sites of Young Stellar Associations and Recent Star Formation in a Flocculent Corrugated Disk
Alice C. Quillen, Alex R. Pettitt, Sukanya Chakrabarti +3
With backwards orbit integration we estimate birth locations of young stellar associations and moving groups identified in the solar neighborhood that are younger than 70 Myr. The…
The ASAS-SN Catalog of Variable Stars VIII: "Dipper" Stars in the Lupus Star-Forming Region
J. W. Bredall, B. J. Shappee, E. Gaidos +9
Some young stellar objects such as T Tauri-like "dipper" stars vary due to transient partial occultation by circumstellar dust, and observations of this phenomenon inform us of con…
WISEA J083011.95+283716.0: A Missing Link Planetary-Mass Object
Daniella C. Bardalez Gagliuffi, Jacqueline K. Faherty, Adam C. Schneider +16
We present the discovery of WISEA J083011.95+283716.0, the first Y dwarf candidate identified through the Backyard Worlds: Planet 9 citizen science project. We identified this obje…
LRP2020: The Opportunity of Young Nearby Associations with the Advent of the Gaia Mission
Jonathan Gagné, Joel Kastner, Semyeong Oh +12
This white paper proposes leveraging high-quality Gaia data available to the worldwide scientific community and complement it with support from Canadian-related facilities to place…
A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1
Eileen C. Gonzales, Jacqueline K. Faherty, Jonathan Gagné +3
We present the distance-calibrated spectral energy distribution (SED) of TRAPPIST-1 using a new medium resolution (R~6000) near-infrared FIRE spectrum and its Gaia parallax. We rep…
Constraints on the occurrence and distribution of 1--20 \mj\ companions to stars at separations of 5--5000\,au from a compilation of direct imaging surveys
Frédérique Baron, David Lafrenière, Étienne Artigau +4
We present the first statistical analysis of exoplanet direct imaging surveys combining adaptive optics imaging at small separations with deep seeing-limited observations at large…
Brown Dwarfs and Directly Imaged Exoplanets in Young Associations
Jacqueline K. Faherty, Katelyn Allers, Daniella Bardalez Gagliuffi +7
In order to understand the atmospheres as well as the formation mechanism of giant planets formed outside our solar system, the next decade will require an investment in studies of…
Astro2020 White Paper: The L/T Transition
Johanna M. Vos, Katelyn Allers, Daniel Apai +10
The L/T transition is an important evolutionary phase in brown dwarf atmospheres, providing us with a unique opportunity to explore the effects of clouds, convection, winds, gravit…
The Early Evolution of Stars and Exoplanet Systems: Exploring and Exploiting Nearby, Young Stars (an Astro2020 Science White Paper)
Joel H. Kastner, Katelyn Allers, Brendan Bowler +12
Our knowledge of the population of young (age <=750 Myr) stars that lie within ~120 pc of the Sun is rapidly accelerating. The vast majority of these nearby, young stars can be pla…
A warm Jupiter-sized planet transiting the pre-main sequence star V1298 Tau
Trevor J. David, Ann Marie Cody, Christina L. Hedges +14
We report the detection of V1298 Tau b, a warm Jupiter-sized planet ( = 0.91 0.05~ , days) transiting a young solar analog with an estimated a…
Volans-Carina: A New 90 Myr Old Stellar Association at 85 pc
Jonathan Gagné, Jacqueline K. Faherty, Eric E. Mamajek
We present a characterization of the new Volans-Carina Association (VCA) of stars near the Galactic plane (b ~ -10 deg) at a distance of ~75-100 pc, previously identified as group…
WEIRD: Wide-orbit Exoplanet search with InfraRed Direct imaging
Frédérique Baron, Étienne Artigau, Julien Rameau +9
We report results from the Wide-orbit Exoplanet search with InfraRed Direct imaging (WEIRD), a survey designed to search for Jupiter-like companions on very wide orbits (1000 to 50…
Understanding Fundamental Properties and Atmospheric Features of Subdwarfs via a Case Study of SDSS J125637.13-022452.4
Eileen C. Gonzales, Jacqueline K. Faherty, Jonathan Gagné +2
We present the distance-calibrated spectral energy distribution (SED) of the sdL3.5 subdwarf SDSS J125637.13-022452.4 (J1256-0224) using its Gaia parallax and its resultant bolomet…
A Young Ultramassive White Dwarf in the AB Doradus Moving Group
Jonathan Gagné, Gilles Fontaine, Amélie Simon +1
We use Gaia DR2 kinematic data and white dwarf evolutionary models to determine that the young and ultramassive white dwarf GD 50 is a likely member of the AB Doradus moving group.…
BANYAN. XIII. A First Look at Nearby Young Associations with Gaia Data Release 2
Jonathan Gagné, Jacqueline K. Faherty
In this paper we examine the nearest 100 pc entries in the data release 2 of Gaia to identify previously unrecognized candidate members in young associations. We analyze 695 952 st…
A Gaia DR2 Confirmation that 2MASS J12074836-3900043 is a Member of the TW Hya Association
Jonathan Gagné, Eileen C. Gonzales, Jacqueline K. Faherty
We use new data from Gaia DR2 to confirm that the young L1 candidate member of the TW Hya association (TWA) is now a bona fide member with a model-dependent mass estimate of ~1…