Alexis Heitzmann

Here is TOI-4652 b's orbit, compared with planets from the Solar System. Cherry on the cake, there are signs of Transit Timing Variations, probably indicating the presence of another, yet invisible body!

TOI-4562 b's location allowed 2 full years of coverage with @TESSatMIT, enabling it's 225 day orbit to be revealed. Follow up with CHIRON@SMARTS and @SAAO provided further characterisation of this gas giant.

The last piece of my PhD accepted in the Astronomical Journal: arxiv.org/abs/2208.10854 This discovery paper highlights a young, Jupiter sized, super eccentric planet on a 225 days orbit! Many thanks to @georgezhouastro and @ChelseaH_Astro, @unisqaus and all the people involved.

@jremis There has been a sightseeing of a very bright burning object over Mayotte/the Comoros about 2h10 ago. Could that be this one?

Update: obj. 32271 COSMOS 2430 SL-6 R/B(2) decay prediction: December 27, 2022 UTC 01h15mn ± 21h

We at @usqedu are currently seeking applications for two fully-funded PhD positions in Exoplanetary Science. Those positions are applicants from across the globe, and applications close on 15th April. Here's a link for more info: astrophysics.usq.edu.au/call-for-appli… #Exoplanets #PhD #USQAstro

That's a big one! Congrats to @spacejayk on his latest paper. Go check it out if you want to know how stellar surveys can help us better constrain exoplanets properties! arxiv.org/abs/2111.14883

Today is #GivingTuesday, please donate TODAY to @ClubesCienciaMx, they provide educational programs in STEM for kids, future scientist in Mexico 🇲🇽 They will get their share of the $1 MILLION raised by @GlobalGiving ⏩ bit.ly/donate2clubes

@spacejayk Congrats mate ! So happy for you 🎊🎊

MFW my paper goes from major visions to acceptance in one revision. Hitting the arXiv ASAP. Can't wait to share this work with the 🌏

SpacExcited to announce the teams participating in the Space for Planet Earth Challenge Research Incubator! Congratulations to the university/startup and high school teams from NZ, Australia, Fiji, and Papua New Guinea! Incubator starts 15 Nov and runs until end of Jan 2022.

@TM_Eubanks Good point, it would probably be on the Gigayear timescale, this system is definitely too young. I recommend this paper (ui.adsabs.harvard.edu/abs/2012ApJ...…) for details on timescales to realign orbits by tidal dissipation.

@HeitzmannAlex How long would it take for stellar tides to drive the obliquity to near zero?

For my first ever tweet I would like to announce my very recent paper available on the arXiv ! We measured the obliquity of the youngest Jupiter-sized exoplanet known to transit, HIP 67522 b. This will help us understand the history of hot giant planets. arxiv.org/abs/2109.04174

Measuring obliquity for such young planets is only a couple of years old, and mostly thanks to TESS! It's also not trivial, as we need to account for the stellar variability, so typical of young stars.

We found that HIP 67522 b is well-aligned, just like the four other very young systems for which obliquity is known. This is exciting because if we keep finding young and aligned systems such as HIP 67522 b, it might hint us at how these giant worlds come to exist.