Pascal Petit

Astronomer

[Solar and Stellar Astrophysics Papers @VTWV]

A BCool survey of stellar magnetic cycles. https://t.co/vGbjv1VbnP

[Astrobiology @astrobiology]

Characterizing Planetary Systems With SPIRou: M-dwarf Planet-search Survey And The Multiplanet Systems GJ 876 And GJ 1148 https://t.co/OaOV3je8cN #astrobiology #exoplanet #astronomy #telescope

[Pascal Petit @pascalou_petit]

@astro_derek @ashleychontos Yes! Sorry for skipping this earlier reference.

[Pascal Petit @pascalou_petit]

Aurore boréale ce soir près d’Argentat en Corrèze !

[Pascal Petit @pascalou_petit]

@tanguy_dusserre Le code MAYONNAISE, on en parle ? https://t.co/gSJ1ft4DNl

[Astropierre @astropierre]

L'activité solaire varie selon un cycle régulier d'environ 11 ans, où son champ magnétique s'inverse.

Des signes d'inversions magnétiques ont aussi été observés chez une petite étoile naine rouge, AD Leonis, dont le champ magnétique est 1000 fois + intense que le Soleil.

1/2

[Observatoire MP @ObsMip]

[Actu #Sciences @IRAP_France] Surveillez les champs magnétiques stellaires : ils sont changeants !
Travaux publiés dans la revue @AandA_journal impliquant Stefano Bellotti et ses collègues
➡️https://t.co/u1whTHNu6x

[David Montes @DMontesG]

ATMOSPHERIX
I- An open source high resolution transmission spectroscopy pipeline for exoplanets atmospheres with SPIRou
https://t.co/pXaOQhBNY7
II- Characterising exopl atmospheres through transmission spectroscopy with SPIRou
https://t.co/DjbNjBPiBR
@SPIRou_astro @CFHTelescope

[@travis-metcalfe.bsky.social @travis_metcalfe]

PAPER DAY!

Another huge effort from a diverse team of asteroseismologists, spectpolarimetricians, and others to help unlock the secrets of the exoplanet host star lambda Serpentis.

Interested in the possibility of PLANETARY ENGULFMENT? Read on: https://t.co/jcsHJMyBtD

[David Montes @DMontesG]

CUTE reveals escaping metals in the upper atmosphere of the ultra-hot Jupiter WASP-189b
A. G. Sreejith, et al. ApJL,

https://t.co/zd7juoUrMT

[David Montes @DMontesG]

Monitoring the large-scale magnetic field of AD Leo with SPIRou, ESPaDOnS and Narval. Toward a magnetic polarity reversal?
S. Bellotti, et al. A&A
—> a substantially increased dipole obliquity, while the topology remained predominantly poloidal and dipolar
https://t.co/coKxpGHwGy

[Astrobiology @astrobiology]

The Space Weather Around The Exoplanet GJ 436b https://t.co/pS5cF63yK8 #astrobiology #spaceweather #exoplanet

[IRAP / @[email protected] @IRAP_France]

[#SoutenanceDeThèse @IRAP_France] ce jeudi à 14h : Stefano BELLOTTI présentera le fruit de ses travaux concernant la recherche d'#exoplanètes habitables au moyen du spectropolarimètre @SPIRou_astro : https://t.co/j1Wdj5Bghs cc @pascalou_petit

[Pascal Petit @pascalou_petit]

@FredericPaletou Ephèse man https://t.co/kbtrAWDALZ

[@travis-metcalfe.bsky.social @travis_metcalfe]

PAPER DAY! Coming to @arxiv this evening: "Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and tau Cet".

Let's talk about tau Ceti, the nearest single G-type star to the solar system (3.7 parsecs), which hosts several planets (two near the HZ) and a debris disk.

[@travis-metcalfe.bsky.social @travis_metcalfe]

(2) Complete Zeeman Doppler Imaging map of the younger G8 star 61 UMa from the hard work of @pascalou_petit and the #BCool team.

ALSO: archival Ly-alpha (@NASAHubble) and X-ray data, rotation periods from @MtWilsonObs, radii and masses from interferometry, asteroseismology, etc.

[Pascal Petit @pascalou_petit]

Beautiful crowd and great review talks at #PPVII

[Pascal Petit @pascalou_petit]

Today at #PPVII I have learned that all stars do not form in clusters and that all stars form in clusters. Now I am confused 🤔