Paul I. Cristofari

About me

I am an astrophysicist currently working at the Harvard & Smithsonian Center for Astrophysics with Professor A. Dupree. I previously completed my PhD at the Institut de Recherche en Astrophysique et Planétologie (IRAP), located at the Observatoire Midi Pyrénée (OMP) in Toulouse, France

Before starting my PhD, I obtained a master's degree in fundamental physics from the Aix-Marseille University, with a specialization in particles and astroparticles, and a bachelor's degree in Chemistry from the University Toulon, France.

When I am not doing science, you will find me playing music, reading, fixing my bike or running.

Reasearch

My recent research has largely focused on the spectroscopic analysis of stars, and in particular M dwarfs, that are the most numerous stars around us. M dwarfs are known to host exoplanets, and their study is essential to understand the solar neighborhood, but their characterization is a technical challenge, in particular because of their complex atmospheres. They also host magnetic fields, that are believed to play essential roles in stellar formation, evolution, and on the habitability of the planets orbiting them. To study those stars, I develop tools and models, such as ZeeTurbo, and analyze high-resolution data recorded with state-of-the-art instruments. My research interests are not limited to M dwarfs, however, and I am also analyzing high-resolution spectra of B and Be stars observed in the Magellanic Clouds to understand more about the multiple population of stars observed in globular clusters.

Publications | Contributions | Teaching

Key publications. Stay tuned for more on NASA ADS
or https://orcid.org/0000-0003-4019-0630

• New Paper !
  P. I. Cristofari , A. K. Dupree, Antonino P. Milone, et al., Rotation and Hα emission in a young SMC cluster: a spectroscopic view of NGC 330 , 2024, ApJ, 972, 72
• P. I. Cristofari , J. -F. Donati , C. Moutou, et al., Measuring small-scale magnetic fields of 44 M dwarfs from SPIRou spectra with ZeeTurbo, 2023, MNRAS, 526, 5648
• P. I. Cristofari , J. -F. Donati , C. P. Folsom, et al., Constraining atmospheric parameters and surface magnetic fields with ZeeTurbo: an application to SPIRou spectra, 2023, MNRAS, 522, 1342
• P. I. Cristofari , J. -F. Donati , T. Masseron, et al., Estimating the atmospheric properties of 44 M dwarfs from SPIRou spectra, 2022, MNRAS, 516, 3802
• P. I. Cristofari , J. -F. Donati , T. Masseron, et al., Estimating fundamental parameters of nearby M dwarfs from SPIRou spectra, 2022, MNRAS, 511, 1893
• E. Martioli, G. Hébrard, P. Fouqué, et al., TOI-1759 b: a transiting sub-Neptune around a low mass star characterized with SPIRou and TESS, 2022 A&A, 660, A86
• G. P. P. L. Otten, A. Vigan, et al., Direct characterization of young giant exoplanets at high spectral resolution by coupling SPHERE and CRIRES+, 2021, A&A, 646, A150

Publications | Contributions | Teaching

• Bfields conference, Constraining magnetic fields of M dwarfs from high resolution spectra [Talk]
• AAS meeting, A spectroscopic view of NGC 330 [Poster]
• PLATO PSM WP12 meeting, Characterizing atmospheric parameters from high-resolution spectra [Talk]
• ExoSystèmes III, Constraining atmospehric parameters and magnetic fields with ZeeTurbo [Talk]
• International SPIRou Science Meeting, Using ZeeTurbo to constrain magnetic fields and atmospheric parameters from SPIRou spectra [Talk]
• Cool Stars 21 conference, Deriving atmospheric parameters of M dwarfs with SPIRou [poster]
• PhD days 2022, Modeling SPIRou spectra of M dwarfs: status and challenges [Talk + Poster]
• PS2E group meeting 2021, Deriving fundamental parameters of M dwarfs from SPIRou spectra [Talk]
• ExoSystèmes II conference, On the characterization of 12 M dwarfs observed in the context of the SLS [Talk]
• International SPIRou Science Meeting 2021, Advances on the characterization of M dwarfs observed in the context of the SLS [Talk]
• International SPIRou Science Meeting 2020, Telluric line correction and analysis of Gl 699 [Talk]

Publications | Contributions | Teaching

© Picture from Pixabay.

Contact

paul.cristofari@cfa.harvard.edu

• Email
• Linkedin
• Twitter
• ORCID

© Picture from Pixabay.

Elements

i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';