My research explores three exciting areas in astronomy.
Stars and planets are born in clouds of gas and dust. By studying young stars, we learn how planetary systems like our own solar system form and evolve. This research helps us understand where Earth-like planets might exist in the universe.
Studying young stars and their planets helps us answer one of humanity’s biggest questions: *How do planetary systems like ours form? By understanding these early stages, we can predict where Earth-like planets might exist and whether they could support life. This research also gives us clues about the origins of our own solar system. My work focuses on:
Identification and characterization of young, nearby stars
We search for stars close to Earth that are still in their youth. These stars are prime targets for studying planet formation.
Early evolution of young stellar moving groups
Stars often form in groups that drift through space together. Understanding these groups tells us about the birthplaces of stars and planets.
Habitability of exoplanets around young, nearby stars
Could planets around these stars support life? We explore conditions that make planets habitable.
Some of my published papers in this research category are listed below.
Debris disks are the leftovers of planet formation, and extreme warm disks may reveal dramatic events like giant collisions between planets. Learning about these disks helps us understand how planetary systems evolve and whether our solar system is typical or unique. This knowledge shapes our search for other worlds. Some stars have unusually massive and warm disks—called extreme warm disks—that challenge our understanding of planetary system evolution. These systems may hold clues about violent events like giant collisions.
Debris disks are dusty rings around stars, leftovers from planet formation. Some disks are unusually massive and warm—these are called extreme warm disks. My research includes:
Evolution of dusty disks
How do these disks change over time? Studying their evolution reveals clues about planetary collisions.
Discovery and characterization of disks
We use infrared observations to find new disks and analyze their properties.
Comparison to our solar system
By comparing these disks to the asteroid belt and Kuiper Belt, we learn how unique (or common) our solar system is.
Some of my published papers in this research category are listed below.
..Excess emission from nearby Gaia M-dwarfs, Sgro & Song, 2021, MNRAS
Comprehensive Census of Nearby IR Excess Stars, Cotten & Song, 2016, ApJS
Warm Dust in the TPZ of a Peiaid..., Rhee, Song, & Zuckerman, 2008, ApJ
Characterization of Dusty Disks: IRAS x Hipparcos, Rhee, Song, Zuckerman et al., 2007, ApJ
Extreme collisions b/w planetesimals .. BD+20_307, Song et al., 2005, Nature
Modern telescopes collect enormous amounts of data—far too much for humans to analyze alone. By using big data techniques and machine learning, we can uncover hidden patterns and discover rare objects that might otherwise go unnoticed. This approach accelerates discoveries and opens new windows into the universe.
Astronomy today is data-driven. Huge catalogs contain billions of stars and galaxies. My work focuses on:
Big data science
Using advanced computing to process and analyze massive datasets.
Efficient handling via RDMSs
Relational Database Management Systems help us organize and query astronomical catalogs quickly.
Machine learning for discovery
AI techniques allow us to find rare objects and patterns hidden in the data.
Some of my published papers in this research category are listed below.
Low-mass members of NYMGs from Gaia EDR3, Lee & Song, 2022, MNRAS
Evaluation of NYMGs based on unsupervised machine learning, Lee & Song, 2019, MNRAS
Bayesian assessment of moving group membership, Lee & Song, 2018, MNRAS