Jon Zink

We have a new paper out today diving into the architectural facets unique to Hot Jupiter systems: Hot Jupiters Have Giant Companions: Evidence for Coplanar High-Eccentricity Migration arxiv.org/abs/2310.01567

My new paper is on arxiv! We surveyed ~110K stars and found a metallicity "cliff" in super-Earth formation. This one has been in the works for a while. Check it out here: arxiv.org/pdf/2407.13821

Yesterday was my last official day as a professional astronomer. It’s been a good run and I have made amazing friendships along the way. Looking forward to the next chapter of my career at Google.

@jjfplanet @Target

The future is now, in Minnesota! @Target

Don’t sleep on this result! We have put a pretty important constraint on the timescale for sub-Neptune mass-loss (about 700 Myr).

@AlexNeedsSpace I don’t know of a formal function for magnitude. But, I highly doubt we are anywhere near that complete with TESS. Maybe for >4 Earth radius and V< 9, completeness might be close to unity.

AstroTwitter: Does anyone know of any work done to assess the completeness of TESS as a function of, say, magnitude? i.e, have we found most of the transiting short period planets (above ~1 earth radius) around bright stars?

@astrobites Also @astrobalmer deserves a shoutout here.

I am truly honored to see some of my work featured in a @astrobites article. Thanks for the wonderful write-up. astrobites.org/2023/10/11/hj-…

One more time with feeling.

We have a new paper out today diving into the architectural facets unique to Hot Jupiter systems: Hot Jupiters Have Giant Companions: Evidence for Coplanar High-Eccentricity Migration arxiv.org/abs/2310.01567

@sharonxuesong arxiv.org/abs/2310.01567

@jonKzink I look forward to it! ...and hope that I didn't spill the beans too early or "scoop" you accidentally via twitter... 😂

I made a plot for all systems hosting more than one transiting giant planets (R>0.3RJ or M>25Me). The small ones are not plotted, but all giants in each system are shown here. They are so close to each other! 1/n thread

Putting all of these features together we favor coplanar high-eccentricity migration ---which predicted a >3X mass correlation for HJ outer companions--- as the dominant mechanism for hot Jupiter formation.

🌟Characteristic 3: Eccentricity Unveils Secrets🌟 In Hot Jupiter (HJ) systems, outer companions tend to have mid-range eccentricities, while comparable non-HJ outer companions appear more circular. This suggest a rich dynamic history between HJs and their outer companions.

@sharonxuesong Look out for a very relevant paper on just this topic hitting ArXiv this week 😉.

I'll report back with more if my system-architecture friends have any comments, but please share your thoughts or papers in this thread!

Stars that travel high above the galactic plane, shown here in many wavelengths, may have fewer small, hot planets than those nearer the plane, according to a new study. Planet formation might differ from one galactic neighborhood to the next! go.nasa.gov/3E5YcPp

Discovery Alert! 📣 A meticulous study finds that stars on the fringes of the Milky Way possess fewer of the most common planet types. Planet formation – and the resulting families of planets – might differ from one galactic neighborhood to the next! go.nasa.gov/3E5YcPp

I am looking to do some talks this fall about exoplanets and their interactions with galaxy itself. If you run a colloquium/coffee/group-meeting and are interested please email or DM me.

Apparently people are having trouble with the DMs. Just email me. Jzink@caltech.edu

I would love to chat/coffee/lunch with #Sagan2023 folks tomorrow (Wednesday). Reach out if you're interested.