Félicitations à Leïla Bessila et Julie Meunier, doctorantes au @cea.fr , lauréates du Prix Jeunes Talents L’Oréal-UNESCO Pour les Femmes et la Science 👍
www.cea.fr/presse/Pages...
@sy-brt.bsky.social
French astronomer in Sicily 🌋☀️ Osservatorio Astrofisico di Catania | Asteroseismology of solar-type stars ⭐🔭 | I like all types of waves 🌊🔊 Little too much of a railway enthusiast for someone living on an island 🚂 Occasionally under water 🤿🐟 (He/him)
Félicitations à Leïla Bessila et Julie Meunier, doctorantes au @cea.fr , lauréates du Prix Jeunes Talents L’Oréal-UNESCO Pour les Femmes et la Science 👍
www.cea.fr/presse/Pages...
Let's unravel the mystery of Saturn's polar hexagon.
A jet stream speeds around the pole at 320 km/h (200 mph). That’s common among planets, but what's not is that it oscillates up and down *very* stably. Each low point of this sine wave becomes a corner of a hexagon, when projected onto a sphere:
Pour le ratio en thèse ce serait sans doute intéressant d'avoir une idée de comment évolue le ratio par rapport aux cohortes des principaux masters pourvoyeurs de thésard·e·s, voir si ça empire à cette étape ou si ça se maintient au même niveau ?
22.10.2025 16:49 — 👍 1 🔁 0 💬 1 📌 0🚨 ALERTE ARTICLE �
"Women participation in French Astronomy 2025", Lagarde et al. 2025, résumé et quelques plots...
👉 La Commission Femmes & Astro de la @sf2a.bsky.social a mené une étude statistique sur la présence des femmes dans l’astronomie professionnelle française 👇👇👇
A new telescope facility is born 🌟, #4MOST captured its first starlight 💫 An impressive example of international cooperation.
4MOST can analyse the light from 2,400 objects simultaneously in 18,000 colours.
www.aip.de/news/4most-f...
@eso.org @4most-eu.bsky.social @aippotsdam.bsky.social
"Let's automatise scientific research so researchers have more time for bureaucratic nonsense"
20.10.2025 08:10 — 👍 0 🔁 0 💬 0 📌 0Another AI-absurdity gem in this abstract: "Most of a scientist's time is spent .... doing their scientist's job"
***deep sigh***
Thanks !
14.10.2025 16:52 — 👍 0 🔁 0 💬 0 📌 0The ERC Starting grant call is officially closed, fingers crossed now ! 🤞🤞🤞
14.10.2025 15:05 — 👍 3 🔁 0 💬 1 📌 0For the last two years, I've been paying for the Astronomy feeds hosting myself.
It has been a privilege to grow our community here, but I also shouldn't keep doing it for free 😅
That's why I'm delighted to announce that we now have a donations page on Open Collective! 🔭☄️ #astrophotography
Today on arXiv, an asteroseismic analysis of the Methuselah star !
#astrosci
arxiv.org/abs/2510.11532
J'avais participé au crowdfunding d'Acadamia je suis vraiment dég
05.10.2025 18:44 — 👍 1 🔁 0 💬 0 📌 0[ #VeilleESR ] Voilà.
05.10.2025 15:17 — 👍 16 🔁 13 💬 2 📌 0The K2 stars of our sample versus the Gaia ultra fast rotators in an activity versus apparent magnitude diagram.
A super interesting results (even if a little bit frustrating) is that the population of low-activity ultra-fast rotators of Gaia remains elusive in K2: the stars seem to be located further away from the regions that the Kepler satellite was able to probe !
29.09.2025 14:03 — 👍 1 🔁 0 💬 0 📌 0Diagrams Prot versus GBP-GRP for our K2 stars and the Gaia and Kepler samples of reference.
We used the targets that K2 and Gaia have in common to perform an extensive comparison of the Kepler and Gaia characteristics. In brief, Kepler rotating stars are globally older (rotationally speaking) than Gaia's (remembering that Gaia has a strong observational bias towards fast rotators).
29.09.2025 14:01 — 👍 1 🔁 0 💬 1 📌 0The location in the sky of the K2 stars of the study together with the full sample of Gaia (orange) and Kepler (grey) solar-like rotators
It is paper time ! If you wondered how the Gaia catalogue of solar-like rotators compared with the stars observed by the Kepler/K2 missions here are some elements of answers !
Here is the link to the article we published in A&A:
www.aanda.org/articles/aa/...
#stellarastro
It was a great pleasure to give the lecture on Stellar rotation and activity last week at the Evry Schatzman School ! ✨ For those interested the slides should be soon available on Zenodo ! (and I hope to be able to write a digest of the lecture if I find the time to do it !)
29.09.2025 07:53 — 👍 3 🔁 0 💬 0 📌 0Start of the Evry Schatzman school on Stellar Physics in the PLATO era !
22.09.2025 06:37 — 👍 3 🔁 0 💬 0 📌 0Final step: Milan-Modane, to be welcome in Aussois by fog and rain 🌧️🌧️🌧️
21.09.2025 17:01 — 👍 0 🔁 0 💬 0 📌 0Second step, the Rome-Milan high speed train, followed by a few hours of break in Milan
21.09.2025 14:37 — 👍 1 🔁 0 💬 1 📌 0For those who don't know, when the train arrives in Messina, it embarks on a ferryboat that brings it to Villa San Giovanni on the other side of the strait, in Calabria, the crossing is just about 20 minutes but the full maneuver lasts about two hours !
21.09.2025 05:43 — 👍 1 🔁 0 💬 1 📌 0This week I am going to Aussois to give a lecture at the Évry Schatzman school of stellar physics ! ✨
I am travelling by train from Catania, first step the Catania-Rome night train with the Messina's strait crossing ! 🚂
(J'ai recroisé le premier camarade complètement par hasard il y a un an et demi avant une audition CNAP, du coup il fait de la physique théorique et il va bien a priori 😅)
18.09.2025 07:40 — 👍 0 🔁 0 💬 0 📌 0Un de mes camarades avait voulu diffuser Merci Patron ! en amont dudit amphi, et un autre (qui aujourd'hui de ce que j'en sais gravite autour de certains milieux de """centre-gauche""" souverainistes...) l'avait par conséquent menacé de "le blacklister du monde du travail" 🤡
18.09.2025 07:37 — 👍 0 🔁 0 💬 1 📌 0J'aurais toujours en tête (c'était quelques années avant le début de la mobilisation contre LVMH) cet amphi obligatoire complètement lunaire où un Bernard Arnault apathique était venu nous raconter des anecdotes sur sa fière jeunesse à l'École.
18.09.2025 07:33 — 👍 1 🔁 0 💬 1 📌 0Figure 16: Sky projections, in Galactic coordinates, showing various properties of the Gaia DR3 data release (see text for details).
Gargantuan Gaia review by Michael Perryman
"271 pages, 126 figures, accepted for publication in Physics Reports"
arxiv.org/abs/2509.10883
We have job opportunities in the APEx department at MPIA - please spread the word!
Postdocs: aas.org/jobregister/...
Tenure-track staff: aas.org/jobregister/...
Max Planck Research Group Leaders: aas.org/jobregister/...
+ happy to host ERC, Humboldt, and other third-party funds.
J'arrête (vraiment) le recensement des plagiats d'Etienne Klein. Ça ne fait plus vraiment sens.
Tout est là : plus de 70 auteurs plagiés par l’une des figures scientifiques les plus médiatisées.
Soit une pratique frauduleuse ancrée, massive, systématique.
⏩ Le doc docs.google.com/document/d/1...
Awesome photos ! We are getting closer ! 🤩
11.09.2025 14:01 — 👍 1 🔁 0 💬 0 📌 0Ça ressemble encore à une superbe idée tout ça 🤦♂️
09.09.2025 11:14 — 👍 0 🔁 0 💬 0 📌 0