Nepali Scientist Leads a Global Breakthrough Discovery in Galaxy Research

In a landmark achievement for Nepal’s scientific community, Dr. Daya Nidhi Chhatkuli, an astrophysicist at Tri-Chandra Multiple Campus, Tribhuvan University has led an international research team in uncovering the journey of a distant compact dwarf galaxy. The study entitled “SDSS J134313.15+364457.5: Forming Compact Elliptical through the Merger” published in the Q2 ranked Journal of Korean Astronomical Society (JKAS) on April 15, 2025, has garnered global recognition and has been featured on platforms such as Science News Today, Phys.org, MSN, Life Technology, and others
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The galaxy in focus — SDSS J134313.15+364457.5, more simply known as J1343+3644 — sits approximately 300 million light-years away. Though modest in size, it’s playing a big role in reshaping how scientists understand the evolution of galaxies.

A Galaxy in Transformation

Dr. Chhatkuli’s research reveals that J1343+3644 is undergoing a dramatic metamorphosis, the result of a recent galactic merger. Among the most notable findings:

Compact structure: With a half-light radius of just 1,570 light-years, J1343+3644 is one of the more tightly packed dwarf galaxies observed.

Gas-rich composition: It contains approximately 7.9 billion solar masses of neutral hydrogen — fuel for future star formation.

Star-forming activity: It is currently generating new stars at a rate of 0.87 solar masses per year.

Observational data from sky surveys including SDSS, GALEX, and VLA FIRST showed elongated tidal tails and a blue-hued galactic core, which is a visual evidence of gravitational interaction and fresh star birth.
“These features are classic indicators of galactic collisions and the ensuing burst of star formation,” explained Dr. Chhatkuli.

The Future of J1343+3644

The study concludes that J1343+3644 is evolving into a compact elliptical galaxy, which is a rare and dense galaxy type typically found in clusters. Over the next few hundred million years, as the star formation slows and gas is depleted, it will transition into a quiescent, elliptical state, resembling early-universe galaxies.
This transformation supports long-standing theories about galaxy evolution, particularly how mergers can reshape galactic morphology and extinguish future star formation by compressing gas into central cores.

Global Recognition, National Pride

The findings have reverberated around the world, with coverage in countries like the United States, France, Turkey, South Korea, Russia, and Morocco. UK-based The Mirror Science ran the headline: “Nepalese Scientists Discover the Formation of a Compact Dwarf Galaxy.”
For Nepal, this moment is much more than just scientific success — it’s symbolic. It reflects the country’s emerging role in the global astrophysics community and showcases the potential of Nepali scientists on the international stage.

A Message to the Next Generation

Speaking with us, Dr. Chhatkuli expressed hope that this breakthrough would inspire more young Nepalis to pursue space science. “We hope this sparks interest among students and encourages greater investment in scientific research,” he said. The published paper can be downloaded from:  https://doi.org/10.5303/JKAS.2025.58.1.93 
As Nepal’s flag rises high in the realm of astronomy, this milestone serves as a reminder that world-class science knows no borders. Stars, indeed, are within our reach!