About Me

Hello, welcome to my webpage!

I am a PhD Candidate in Planetary Sciences at Caltech. I work on the observational characterization of exoplanets with Professor Heather Knutson. My research interests include exoplanet detection, interior and atmospheric characterization, dynamics and tides, and host star radiation/activity. In my PhD thesis work, I have used transit timing variations and radial velocity observations to measure planetary radii, masses, orbital eccentricities, and tidal heat fluxes, and characterized the XUV flux of planet host stars. I hope to understand the true diversity of compositions for small planets, and investigate their formation, evolution, and habitability. I work on this by combining observations with statistical analysis and dynamical modeling.

Previously, I worked as a space weather forecaster at NASA Goddard Space Flight Center, where I monitored real-time solar wind conditions and eruptions to make predictions for impacts to NASA assets throughout the solar system. This work was exciting and fulfilling, especially when there were coronal mass ejections headed straight for the Earth!

I received dual BS degrees in Physics and Astronomy with a minor in Planetary Science from the University of Maryland, College Park in 2019. I originally focused on plasma physics and heliophysics research, before switching to exoplanets. I worked with Professor Drake Deming for my undergraduate thesis on identifying false positive planet candidates from the K2 Mission. Despite several later additions, this work keeps my standing count of planets discovered at -2.

Research Highlights

Tidally Heated Sub-Neptunes in the TOI-1266 System

I used extensive ground- and space-based transit follow-up combined with archival radial velocity observations of the TOI-1266 system to confirm the existence of a new exterior planet, and to measure the planetary eccentricities and tidal heat fluxes. I found that TOI-1266 b has a tidal heat flux > 100 times the volcanically active Jovian moon Io, which may be responsible for puffing up its radius compared to its outer neighbor TOI-1266 c. This work also identifies TOI-1266 c as a likely water-rich planet.

Constraints on Planet Formation from TTVs in the Kepler-289 System

I used transit timing variations to improve the mass measurements for the three planets in the Kepler-289 system, which contains two inner rocky planets and an outer gas giant near the 1:2:4 Laplace orbital resonance. By measuring the masses of the inner two rocky planets, we can place a lower limit on the amount of solid material delivered to the inner protoplanetary disk. This constrains the formation location of the outer gas giant planet much further out than its current location, indicative of planetary migration.

Invalidating Planet Candidates from K2

In my undergraduate thesis work, I inspected transit photometry from the K2 mission and identified several planet candidates that exhibited secondary eclipses. Calculating the implied brightness temperature of these objects from their secondary eclipse depths revealed that they are too hot to be planets, and are instead consistent with blended eclipsing binary stars.

A Survey of Bulk Compositions for Small Planets around M Stars

I am conducting a survey of small planets (< 3 Earth radii) in multi-planet systems around M stars, using transit timing variations and radial velocity observations to better constrain the planetary bulk densities and compositions. Improved mass and radius measurements allow us to better understand the formation and evolution of these terrestrial exoplanets, and identify top candidates for atmospheric characterization. Stay tuned for future papers on more systems coming soon!

Characterizing the Radiation Environments of Rocky Planets

I am the PI of two ongoing XMM-Newton space telescope programs to observe the X-ray and far ultraviolet flux of nearby M dwarf stars. These stars each host multiple small planets spanning the radius valley from rocky super-Earths to volatile-rich mini-Neptunes, allowing us to assess the comparative impact of stellar irradiation on exoplanet atmospheres.

Mapping the Earth's Magnetosphere with Relativistic Electron Beams

How does the Earth's magnetic field respond to changes in solar wind conditions? How quickly does it bounce back after being hit by a coronal mass ejection? These questions can be answered by precisely tracking the Earth's magnetic field lines under changing conditions, and one way to do that is by launching charged particles at Earth from an orbiting satellite to create localized aurora that can be tracked from the ground. I modeled how this process works at the Princeton Plasma Physics Laboratory. If you are a billionaire interested in creating your own personalized aurora (during quiet solar wind conditions), please get in touch!!

Publications

Check out my full list of publications at the links below

Outreach & Service

Outreach

I greatly enjoy contributing to and participating in accessible, inclusive, sustainable community outreach programs. Through Caltech's GO-Outdoors program, I've developed interactive lesson plans for space science topics in the Next Generation Science Standards and implemented them for several middle school classes, and volunteered in other teacher-requested activities which have brought GO-Outdoors to 1000+ public school students in just the first few years of the program! I've also given public outreach talks at Palomar Observatory and volunteered with Skype-A-Scientist.

Student Government

As a member of the Board of Directors of the Caltech Graduate Student Council, I've served on the social, advocacy, and budget and finance committees. Some of my favorite activities in student government include planning and hosting social events to bring graduate students together, and providing support for the many interesting and exciting student clubs and groups.

Union Service

As an elected bargaining representative of Caltech's 1400+ graduate student workers, I have worked to secure significant improvements to protections against discrimination and abusive conduct, health and safety standards, and accessibility accommodations during our ongoing contract negotiations.

Academic Service

I've enjoyed many forms of academic service, including three years as a free math tutor for community high schoolers through Caltech's Rise Program, serving as the at-large ombudsperson for my academic division, and serving as an organizer and host of Caltech's planetary sciences seminar.

Mentorship

Through four years in Caltech's WAVE and SURF programs I have mentored four undergraduate students (Winnie Jeng, Jorge Pérez-González, Kendra Nguyen, and Haedam Im). They have completed impressive projects involving software development, telescope observations, atmospheric modeling, and dynamical simulations!

SCUBA

If you are at Caltech and are interested in funding/support for getting your SCUBA certification or a SCUBA trip for certified divers, please reach out to me/the SCUBA club! scuba@caltech.edu

Check out these awesome SCUBA highlights 😎 🌊 🤿

A Puffer Fish in Colombia

Visiting a Shipwreck in Hawaii

Entering a Cenote in Yucatán

A Curious California Sea Lion