Remco de Kok
@planetremco.bsky.social
Academic wanderer, all the atmospheres, dad, husband, runner. He/him.
Nice high signal-to-noise detections of atoms in an ultra-hot Jupiter. There are velocity offsets in iron, which suggests strong winds in certain layers in the atmosphere (but not the other layers that are probed by e.g. Na).
Householder+ arxiv.org/abs/2511.14175
🧪🔭🪐#exoplanets
Householder+ arxiv.org/abs/2511.14175
🧪🔭🪐#exoplanets
November 19, 2025 at 8:39 AM
Nice high signal-to-noise detections of atoms in an ultra-hot Jupiter. There are velocity offsets in iron, which suggests strong winds in certain layers in the atmosphere (but not the other layers that are probed by e.g. Na).
Householder+ arxiv.org/abs/2511.14175
🧪🔭🪐#exoplanets
Householder+ arxiv.org/abs/2511.14175
🧪🔭🪐#exoplanets
Saw this 1904 Picasso painting and assumed the dude was looking at his phone.
November 9, 2025 at 8:26 AM
Saw this 1904 Picasso painting and assumed the dude was looking at his phone.
Painting #3! Happy with the colours (hard to make a good picture of it though), but painting hair sucks
November 6, 2025 at 12:25 PM
Painting #3! Happy with the colours (hard to make a good picture of it though), but painting hair sucks
Enjoying this glorious day.
November 5, 2025 at 2:03 PM
Enjoying this glorious day.
Lol the brand name NASA is so strong in the Netherlands that they put it on (groundbased) kids' telescopes. Should say ESO of course!
October 16, 2025 at 7:12 AM
Lol the brand name NASA is so strong in the Netherlands that they put it on (groundbased) kids' telescopes. Should say ESO of course!
At least our floor squeegee seems happy.
October 15, 2025 at 6:44 AM
At least our floor squeegee seems happy.
Autumn colours in the garden.
October 9, 2025 at 2:32 PM
Autumn colours in the garden.
Neat way of showing where in the exoplanet atmosphere different molecules contribute to the observed spectrum.
Lustig-Yeager & Sotzen+ arxiv.org/abs/2510.06169
Lustig-Yeager & Sotzen+ arxiv.org/abs/2510.06169
October 8, 2025 at 10:15 AM
Neat way of showing where in the exoplanet atmosphere different molecules contribute to the observed spectrum.
Lustig-Yeager & Sotzen+ arxiv.org/abs/2510.06169
Lustig-Yeager & Sotzen+ arxiv.org/abs/2510.06169
Started to learn how to paint. Learning a lot and still a lot to learn. Lots of happy hours of fiddling in any case.
September 25, 2025 at 8:06 AM
Started to learn how to paint. Learning a lot and still a lot to learn. Lots of happy hours of fiddling in any case.
I do love this...we can start to look at the population of exoplanets and see under what conditions we expect to see something (in this case the gas SO2) and whether we actually see this in planets. In that way models can be made that represent planets well. Crossfield+ arxiv.org/abs/2509.14318 🧪🔭🪐
September 19, 2025 at 11:51 AM
I do love this...we can start to look at the population of exoplanets and see under what conditions we expect to see something (in this case the gas SO2) and whether we actually see this in planets. In that way models can be made that represent planets well. Crossfield+ arxiv.org/abs/2509.14318 🧪🔭🪐
Ah, apparently it was #CloudAppreciationDay . Some late pictures of lonely clouds on mountains.
September 13, 2025 at 5:47 AM
Ah, apparently it was #CloudAppreciationDay . Some late pictures of lonely clouds on mountains.
Something's brewing.
September 4, 2025 at 5:26 PM
Something's brewing.
Lol! I had a similar joke once :)
August 11, 2025 at 7:00 AM
Lol! I had a similar joke once :)
My favorite Doctor and Companion
Clearly.
Clearly.
August 9, 2025 at 7:08 AM
My favorite Doctor and Companion
Clearly.
Clearly.
This pretty much sums up a holiday on a Dutch island.
August 5, 2025 at 5:39 PM
This pretty much sums up a holiday on a Dutch island.
JWST is making it possible to see weather phenomena on big hot exoplanets, by looking at the differences between the morning and evening atmosphere. Evenings are generally more cloud-free than the morning. Cool stuff by Fu+ arxiv.org/abs/2507.15854
July 22, 2025 at 5:22 AM
JWST is making it possible to see weather phenomena on big hot exoplanets, by looking at the differences between the morning and evening atmosphere. Evenings are generally more cloud-free than the morning. Cool stuff by Fu+ arxiv.org/abs/2507.15854
Same, greeting card. Same.
July 15, 2025 at 8:28 AM
Same, greeting card. Same.
If you see this, quote with a robot that isn't from "Star Wars", "Star Trek", "Doctor Who", or "Transformers".
(Showing my age...)
(Showing my age...)
July 6, 2025 at 10:52 AM
If you see this, quote with a robot that isn't from "Star Wars", "Star Trek", "Doctor Who", or "Transformers".
(Showing my age...)
(Showing my age...)
Whoa, we're half way there
Whoa oh...
Whoa oh...
July 2, 2025 at 11:49 AM
Whoa, we're half way there
Whoa oh...
Whoa oh...
Post a picture of when your pet was little
June 22, 2025 at 6:13 PM
Post a picture of when your pet was little
As Oxford as can be.
April 2, 2025 at 5:59 PM
As Oxford as can be.
This looks like such a cool paper: coupling magma ocean model with an atmospheric model to simulate evolution of small-ish planets over a wide parameter range. So, you can have a good guess how planets look like for certain sizes and distances from the star.
Cherubim+ arxiv.org/abs/2503.05055 🔭🧪☄️
Cherubim+ arxiv.org/abs/2503.05055 🔭🧪☄️
March 10, 2025 at 8:44 AM
This looks like such a cool paper: coupling magma ocean model with an atmospheric model to simulate evolution of small-ish planets over a wide parameter range. So, you can have a good guess how planets look like for certain sizes and distances from the star.
Cherubim+ arxiv.org/abs/2503.05055 🔭🧪☄️
Cherubim+ arxiv.org/abs/2503.05055 🔭🧪☄️
Happy AF Lep b day! Detecting molecules at high spectral resolution on this directly imaged planet with two different instrument suites on the VLT.
Hayoz+ with ERIS arxiv.org/abs/2502.19961
Denis+ with HiRISE (=CRIRES + SPHERE together 🤯) arxiv.org/abs/2502.19558
Love these molecule maps :)
Hayoz+ with ERIS arxiv.org/abs/2502.19961
Denis+ with HiRISE (=CRIRES + SPHERE together 🤯) arxiv.org/abs/2502.19558
Love these molecule maps :)
February 28, 2025 at 8:41 AM
Happy AF Lep b day! Detecting molecules at high spectral resolution on this directly imaged planet with two different instrument suites on the VLT.
Hayoz+ with ERIS arxiv.org/abs/2502.19961
Denis+ with HiRISE (=CRIRES + SPHERE together 🤯) arxiv.org/abs/2502.19558
Love these molecule maps :)
Hayoz+ with ERIS arxiv.org/abs/2502.19961
Denis+ with HiRISE (=CRIRES + SPHERE together 🤯) arxiv.org/abs/2502.19558
Love these molecule maps :)
Mars for the last few decades:
February 26, 2025 at 6:30 AM
Mars for the last few decades: