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Posts by Shami Tsai

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‘A molten, mushy state’: scientists may have found a new type of liquid planet Latest observations of L98-59d, about 35 light years from Earth, suggest it could be different to anything seen before

Coverage in The Guardian for Harrison's Nature Astronomy paper on L 98-59d. This paper involved a number of other current and former members of the Oxford PCD group.
www.theguardian.com/science/2026...

1 month ago 19 4 2 0
seven panel figure showing different JWST transits of TOI-3884 b with a persistent spot-crossing event. TOI-3884 b orbits the pole of a small M dwarf star. the shape of the spot-crossing event changes slightly between each transit. each subpanel has a graphical representation of what the spot looks like during each transit.

seven panel figure showing different JWST transits of TOI-3884 b with a persistent spot-crossing event. TOI-3884 b orbits the pole of a small M dwarf star. the shape of the spot-crossing event changes slightly between each transit. each subpanel has a graphical representation of what the spot looks like during each transit.

really exciting work lead by Catriona Murray! TOI-3884 b is a planet on a polar orbit around an M dwarf. The transit has a persistent starspot crossing event. Using JWST, we measured the properties of the starspot and the Prot of the star 👀 arxiv.org/abs/2603.15414
🔭 #astronomy 🌟 #stellarastro

1 month ago 28 8 1 0

Yuk was new faculty when I was an undergraduate studying planetary. It always felt like he was unchanging and ageless. He made so many contributions while remaining positive and joyful. Truly will be missed.

1 month ago 16 4 0 0

I feel like releasing JWST #cycle5 results on Friday is like firing employees on Fridays

1 month ago 0 0 0 0
2 ASIAA postdoctoral positions in cosmology and exoplanets | American Astronomical Society The Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) invites applications to two postdoctoral research positions in cosmology and exoplanet science, working with Dr. Tomomi Sunayama and...

I am hiring a postdoc in exoplanet atmospheres! (ASIAA, 4yrs, funded through 2030)
Job ad here. Feel free to reach out if there are any questions!
aas.org/jobregister/...
PS. There’s also another postdoc position in cosmology with an awesome colleague

3 months ago 8 1 0 1

Feel free to reach out if you have any questions about ASIAA or life in Taipei!

6 months ago 1 0 0 0

The institute has a vibrant research environment, with 20+ postdocs from diverse international backgrounds. ASIAA is also part of the ELT/METIS instrument design and science team and is involved in the MagNIFIES project for Magellan/GMT.

6 months ago 1 0 1 0
ASIAA Postdoctoral Positions in Observation, Theory, or Instrumentation | American Astronomical Society The Academia Sinica Institute of Astronomy and Astrophysics (ASIAA) in Taipei, Taiwan, has multiple openings for postdoctoral positions. We seek candidates to pursue observational and theoretical stud...

Excited to share some great postdoctoral opportunities available at ASIAA, Taiwan.
— especially the Distinguished Postdoctoral Fellowship, which is an independent 2+2 year position.

Link to the ad:
aas.org/jobregister/...

6 months ago 1 0 1 0
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Or you have to publish your previous data before being allowed to submit again

6 months ago 1 0 1 0
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Double rainbow in Bristol

7 months ago 0 0 0 0
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So excited to host my first visitor, Prof. Xinting Yu @joneskuma.bsky.social, who gave a wonderful colloquium taking us from organic particles on Titan to protoplatary disks. Can interstellar organics promote grain growth in a disk? So much to explore in the lab!

8 months ago 2 0 0 0

I wrote a research note about the recent publication of the MIRI/LRS spectrum of K2-18b. The authors had claimed the detection of potential signs of life. I find the data to be consistent with a flat line 🔭🧪

11 months ago 112 45 5 1

For our #JWSTCycle4 proposal on atmospheric characterization (unrelated to habitability nor astrobiology), the 1st weakness is "not clear enough what implications would it have for other classes of space creatures" - by reviewer 1 not reviewer 2

1 year ago 1 0 0 0
Artist concept of the hot Jupiter WASP-17b.
Credit: NASA, ESA, CSA, Ralf Crawford (STScI)

Artist concept of the hot Jupiter WASP-17b. Credit: NASA, ESA, CSA, Ralf Crawford (STScI)

JWST Program GO 8309

Principal Investigator: Elijah Mullens
PI Institution: Cornell University

Title: It’s (poly)Morphin’ Time! Solving the quartz quandary of WASP-17b

External Allocation: 37.8 hours

JWST Program GO 8309 Principal Investigator: Elijah Mullens PI Institution: Cornell University Title: It’s (poly)Morphin’ Time! Solving the quartz quandary of WASP-17b External Allocation: 37.8 hours

Bizarre mineral clouds on a hot giant planet.

In 2023, JWST found quartz (SiO2) clouds in the hot Jupiter WASP-17b.

WASP-17b will be revisited with JWST to discover the specific crystal structure of these quartz clouds. We'll understand these exotic exo-clouds like never before!

1 year ago 11 2 1 0