Alexis Quintana
@alexis-space.bsky.social
Astronomy postdoc fellow in LIRA (@liraastro.bsky.social), Paris Observatory (@obs-paris-psl.bsky.social) in 🇨🇵.
Works on OB stars, stellar associations & clusters and Galactic structure & dynamics.
From 🇧🇪, previously in 🇬🇧 and 🇪🇦.
he/him
Works on OB stars, stellar associations & clusters and Galactic structure & dynamics.
From 🇧🇪, previously in 🇬🇧 and 🇪🇦.
he/him
Great picture! Just a small correction if I may: NGC 663 is located in the Cassiopeia constellation, not in Auriga. Or maybe you were referring to another open cluster? 😄
November 10, 2025 at 12:12 AM
Great picture! Just a small correction if I may: NGC 663 is located in the Cassiopeia constellation, not in Auriga. Or maybe you were referring to another open cluster? 😄
I mean, I know a Belgian village named "Humain" (Human in English) so I won't judge... 😅
November 7, 2025 at 7:15 PM
I mean, I know a Belgian village named "Humain" (Human in English) so I won't judge... 😅
I lived four years in the UK and yet it's the first time I hear about Penistone and Botallack 😅
November 7, 2025 at 3:27 PM
I lived four years in the UK and yet it's the first time I hear about Penistone and Botallack 😅
Even then, it's still too low, the poor molecular cloud doesn't have time to convert all of its mass into stars before being destroyed by the feedback of the newly-born massive stars :(
(We love our OB stars though)
(We love our OB stars though)
November 4, 2025 at 10:39 AM
Even then, it's still too low, the poor molecular cloud doesn't have time to convert all of its mass into stars before being destroyed by the feedback of the newly-born massive stars :(
(We love our OB stars though)
(We love our OB stars though)
I thought it was around 10%! So the number has been revised down again?? :(
November 4, 2025 at 7:52 AM
I thought it was around 10%! So the number has been revised down again?? :(
I published my first paper late 2021, two years after I started my PhD, and was shocked to discover that some Master students now are encouraged to publish papers before even starting their PhD. Such a quick shift...
November 1, 2025 at 4:56 PM
I published my first paper late 2021, two years after I started my PhD, and was shocked to discover that some Master students now are encouraged to publish papers before even starting their PhD. Such a quick shift...
I see, thanks! So basically the implementation of a standardised metric that doesn't work for all disciplines, including astronomy...
October 26, 2025 at 10:11 AM
I see, thanks! So basically the implementation of a standardised metric that doesn't work for all disciplines, including astronomy...
I'm not sure to fully understand the metric presented in the article 😅
October 26, 2025 at 9:54 AM
I'm not sure to fully understand the metric presented in the article 😅
Reposted by Alexis Quintana
On the arXiv today, the paper presents how we did 80,000 simulated cluster injection & retrievals to derive the first ever (!!!) full selection function for the open cluster census! 🔭☄️ #galactic
The selection function of the Gaia DR3 open cluster census
Open clusters are among the most useful and widespread tracers of Galactic structure. The completeness of the Galactic open cluster census, however, remains poorly understood. For the first time ever,...
arxiv.org
October 22, 2025 at 12:54 PM
On the arXiv today, the paper presents how we did 80,000 simulated cluster injection & retrievals to derive the first ever (!!!) full selection function for the open cluster census! 🔭☄️ #galactic
Reading this post just after my computer nearly crashes when I compile Overleaf is oddly ironic 😅😭
October 17, 2025 at 11:56 AM
Reading this post just after my computer nearly crashes when I compile Overleaf is oddly ironic 😅😭