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Author: AstroJacobLi

Jiaxuan_Li_CV.pdf

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 I'm an observer interested in a variety of topics in astronomy and astrophysics, mainly on galaxy formation and evolution, low surface brightness astrophysics, sky surveys, machine learning, and instrumentation. My current research primarily involves uncovering the formation and evolution of dwarf galaxies through both exquisite observations and numerical simulations. I have been actively engaging with data from cutting-edge deep sky surveys such as the <a href="https://hsc.mtk.nao.ac.jp">Hyper Suprime-Camera (HSC) Subaru Strategic Program (SSP)</a> and the <a href="https://merian.sites.ucsc.edu/">Merian Survey</a>. Additionally, I am keen on harnessing advanced machine learning techniques to address astrophysical challenges. For more information, please visit my <a href="https://astrojacobli.github.io//research/"><strong>Research</strong></a> page.
 
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-Recently, together with <a href="https://sihaocheng.github.io/">Sihao Cheng</a> (IAS) and <a href="https://web.astro.princeton.edu/people/eritas-yang">Eritas Yang</a> (Princeton), we discovered an exceptional trans-Neptunian object (TNO) [2017 OF201](https://en.wikipedia.org/wiki/2017_OF201). The most striking feature of 2017 OF201 is that its orbit does not following the apsidal clustering pattern observed in many other extreme TNOs. This pattern is thought to be caused by the gravitational influence of a massive planet beyond Neptune, or so-called [Planet 9 or Planet X](https://en.wikipedia.org/wiki/Planet_Nine). The existence of 2017 OF201 might suggest that Planet 9 or X doesn't exist. Check out our <a href="https://ui.adsabs.harvard.edu/abs/2025arXiv250515806C/abstract">paper</a> for more details. This work was featured in the <a href="https://www.ias.edu/news/extreme-cousin-pluto-possible-dwarf-planet-discovered-solar-systems-edge">IAS</a> and <a href="https://web.astro.princeton.edu/news/princeton-astronomers-discover-extraordinary-distant-object-solar-systems-edge">Princeton University</a> websites, as well as in <a href="https://phys.org/news/2025-05-extreme-cousin-pluto-dwarf-planet.html">Phys.org</a>, <a href="https://www.newscientist.com/article/2481477-new-dwarf-planet-spotted-at-the-edge-of-the-solar-system/">New Scientist</a>, <a href="https://www.universetoday.com/articles/our-solar-system-may-have-a-new-planetary-sibling-another-dwarf-planet">Universe Today</a>, <a href="https://earthsky.org/space/new-minor-planet-found-in-the-distant-solar-system-2017-of201/">EarthSky</a>.
+Recently, together with <a href="https://sihaocheng.github.io/">Sihao Cheng</a> (IAS) and <a href="https://web.astro.princeton.edu/people/eritas-yang">Eritas Yang</a> (Princeton), we discovered an exceptional trans-Neptunian object (TNO) [2017 OF201](https://en.wikipedia.org/wiki/2017_OF201). The most striking feature of 2017 OF201 is that its orbit does not following the apsidal clustering pattern observed in many other extreme TNOs. This pattern is thought to be caused by the gravitational influence of a massive planet beyond Neptune, or so-called <a href="https://en.wikipedia.org/wiki/Planet_Nine">Planet 9 or Planet X</a>. The existence of 2017 OF201 might suggest that Planet 9 or X doesn't exist. Check out our <a href="https://ui.adsabs.harvard.edu/abs/2025arXiv250515806C/abstract">paper</a> for more details. This work was featured in the <a href="https://www.ias.edu/news/extreme-cousin-pluto-possible-dwarf-planet-discovered-solar-systems-edge">IAS</a> and <a href="https://web.astro.princeton.edu/news/princeton-astronomers-discover-extraordinary-distant-object-solar-systems-edge">Princeton University</a> websites, as well as in <a href="https://phys.org/news/2025-05-extreme-cousin-pluto-dwarf-planet.html">Phys.org</a>, <a href="https://www.newscientist.com/article/2481477-new-dwarf-planet-spotted-at-the-edge-of-the-solar-system/">New Scientist</a>, <a href="https://www.universetoday.com/articles/our-solar-system-may-have-a-new-planetary-sibling-another-dwarf-planet">Universe Today</a>, <a href="https://earthsky.org/space/new-minor-planet-found-in-the-distant-solar-system-2017-of201/">EarthSky</a>.
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