activity
20212026
most citedTESS Hunt for Young and Maturing Exoplanets (THYME) VI: an 11 Myr giant planet transiting a very low-mass star in Lower Centaurus Crux

83 citations · 215 across the 24 of their papers we have counts for

collaborators

27 papers

astro-ph.EP2026

An Infant Sub-Saturn in Scorpius-Centaurus

Gurmeher Kathuria, Luke G. Bouma, Andrew W. Boyle +25

We report the discovery and validation of TIC 88297141 Ab, a transiting planet orbiting a pre-main-sequence M dwarf (0.31 solar masses, 0.74 solar radii) in the Scorpius-Centaurus…

astro-ph.EP2026

Toddlers in Resonance I: low masses and eccentricities of the 17 Myr giant planets HIP 67522 bc from transit timing variations

Hannah R. James, Madyson G. Barber, Andrew W. Mann +28

Infant (100\,Myr) transiting planet systems provide glimpses into the processes that shape the observed mature planet population. Masses for these planets are powerful data poin…

astro-ph.EP2026

Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey

Mariana Sastre, Tim Lichtenberg, Lisa Dang +22

Ultra-short-period (USP) rocky exoplanets can have dayside temperatures high enough to maintain permanent magma oceans, sitting at the intersection of interior geophysics and atmos…

astro-ph.EP2026

Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE) II: a 135 Myr planet on an aligned orbit with transit timing variations

Madyson G. Barber, Andrew W. Mann, Sydney Vach +16

Young planets (<1 Gyr) provide opportunities to directly probe planet formation and evolution processes in action. However, due to heightened stellar activity, there is a lack of k…

astro-ph.EP2026

Preparing for the Early eVolution Explorer: Detecting the Primordial, Transiting Exoplanet Population

George Zhou, James G. Rogers, Jennifer A. Burt +17

The close-in small planet population may be formed either with hydrogen/helium dominated envelopes or with water-rich interiors. Both scenarios reproduce the present day planet pop…

astro-ph.EP2026★ 1 cited

An Adolescent and Near-Resonant Planetary System Near the End of Photoevaporation

Mu-Tian Wang, Fei Dai, Hui-Gen Liu +28

Young exoplanets provide vital insights into the early dynamical and atmospheric evolution of planetary systems. Many multi-planet systems younger than 100 Myr exhibit mean-motion…

astro-ph.EP2025

Searching for Transit Timing Variations in young transiting systems

Ana Isabel Lopez Murillo, Andrew W. Mann, Madyson G. Barber +3

The discovery of young (<800 Myr) transiting planets has provided a new avenue to explore how planets form and evolve over their lifetimes. Mass measurements for these planets woul…

astro-ph.EP2025

Stellar Obliquities of Young Systems, Atmospheres Undergoing Contraction and Escape (SOYSAUCE): a likely aligned orbit for the 3 Myr planet TIDYE-1 b

Madyson G. Barber, Andrew W. Mann, Marshall C. Johnson +12

Despite the wide range of planet-star (mis)alignments in the mature population of transiting exoplanets, the small number of known young transiting planets are nearly all aligned w…

astro-ph.EP2025

TESS Investigation -- Demographics of Young Exoplanets (TI-DYE) IV: a Jovian radius planet orbiting a 34 Myr Sun-like star in the Vela association

Madyson G. Barber, Andrew W. Mann, Andrew Vanderburg +17

The discovery of infant (< 50 Myr), close-in (<30-day period) planets is vital in understanding the formation mechanisms that lead to the distribution of mature transiting planets…

astro-ph.EP2025

Ever Elusive Exospheres: One Probable Detection and Two Non-Detections of Hα Transits in Young Systems

Reilly P. Milburn, Andrew W. Mann, Keighley Rockcliffe +5

Gaps in the exoplanet population, such as the Neptunian Desert, point to the importance of mass-loss in sculpting the radii of close-in exoplanets. Young planets (500Myr) offer…

astro-ph.EP2025

THYME XIII: Two young Neptunes orbiting a 75-Myr star in the Alpha Persei Cluster

Anne Dattilo, Andrew M. Vanderburg, Madyson G. Barber +28

Young planets with mass measurements are particularly valuable in studying atmospheric mass-loss processes, but these planets are rare and their masses difficult to measure due to…

astro-ph.EP2025★ 1 cited

On Linking Planet Formation Models, Protoplanetary Disk Properties, and Mature Gas Giant Exoplanet Atmospheres

Adina D. Feinstein, Richard A. Booth, Jennifer B. Bergner +34

Measuring a single elemental ratio (e.g., carbon-to-oxygen) provides insufficient information for understanding the formation mechanisms and evolution that affect our observations…

astro-ph.SR2025

Mass, Gas, and Gauss around a T Tauri Star with SPIRou

J. -F. Donati, E. Gaidos, C. Moutou +4

Studies of young planets help us understand planet evolution and investigate important evolutionary processes such as atmospheric escape. We monitored IRAS 04125+2902, a 3 Myr-old…

astro-ph.EP2025

TESS Investigation -- Demographics of Young Exoplanets (TI-DYE) III: an inner super-Earth in TOI-2076

Madyson G. Barber, Andrew W. Mann, Andrew Vanderburg +2

Young (<500 Myr) multi-planet transiting systems are valuable environments for understanding planet evolution by offering an opportunity to make direct comparisons between planets…

astro-ph.EP2025★ 3 cited

A 16 Myr super-Neptune in Upper-Centaurus Lupus and a preliminary survey of transiting planets in Sco-Cen with TESS

Sydney Vach, George Zhou, Andrew W. Mann +25

Measuring the properties of planets younger than about 50 Myr helps to test different planetary formation and evolution models. NASA's Transiting Exoplanet Survey Satellite (TESS)…

astro-ph.EP2024★ 34 cited

A giant planet transiting a 3-Myr protostar with a misaligned disk

Madyson G. Barber, Andrew W. Mann, Andrew Vanderburg +35

Astronomers have found more than a dozen planets transiting 10-40 million year old stars, but even younger transiting planets have remained elusive. A possible reason for the lack…

astro-ph.EP2024★ 3 cited

The Featherweight Giant: Unraveling the Atmosphere of a 17 Myr Planet with JWST

Pa Chia Thao, Andrew W. Mann, Adina D. Feinstein +29

The characterization of young planets (< 300 Myr) is pivotal for understanding planet formation and evolution. We present the 3-5m transmission spectrum of the 17 Myr, Jupiter-s…

astro-ph.EP2024★ 4 cited

A transiting multi-planet system in the 61 million year old association Theia 116

Sydney Vach, George Zhou, Chelsea X. Huang +28

Observing and characterizing young planetary systems can aid in unveiling the evolutionary mechanisms that sculpt the mature exoplanet population. As an all-sky survey, NASA's Tran…

astro-ph.EP2024★ 25 cited

TESS Investigation -- Demographics of Young Exoplanets (TI-DYE) II: a second giant planet in the 17-Myr system HIP 67522

Madyson G. Barber, Pa Chia Thao, Andrew W. Mann +13

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 giant (10) p…

astro-ph.EP2024

TESS Hunt for Young and Maturing Exoplanets (THYME) X: a two-planet system in the 210 Myr MELANGE-5 Association

Pa Chia Thao, Andrew W. Mann, Madyson G. Barber +35

Young (<500 Myr) planets are critical to studying how planets form and evolve. Among these young planetary systems, multi-planet configurations are particularly useful as they prov…

astro-ph.EP2024★ 1 cited

The occurrence of small, short-period planets younger than 200 Myr with TESS

Sydney Vach, George Zhou, Chelsea X. Huang +10

Within the first few hundreds of millions of years, many physical processes sculpt the eventual properties of young planets. NASA's TESS mission has surveyed young stellar associat…

astro-ph.SR2023

A Lithium Depletion Age for the Carina Association

Mackenna L. Wood, Andrew W. Mann, Madyson G. Barber +6

The dispersed remnants of stellar nurseries, stellar associations provide unparalleled samples of coeval stars critical for studies of stellar and planetary formation and evolution…

astro-ph.SR2023★ 2 cited

A search for stellar siblings of the ~ 200 Myr TOI-251b planetary system

Qinghui Sun, Sharon Xuesong Wang, Andrew W. Mann +4

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 discovered sub-Neptune orbiting a…

astro-ph.SR2023★ 21 cited

Using the Gaia excess uncertainty as a proxy for stellar variability and age

Madyson G. Barber, Andrew W. Mann

Stars are known to be more active when they are young, resulting in a strong correlation between age and photometric variability. The amplitude variation between stars of a given a…