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Statistique de multiplicite des etoiles naines de types spectraux M et L

Abstract : THIS WORK HAS BEEN DONE IN THE FOST TEAM OF GRENOBLE ASTROPHYSICAL LABORATORY, WICH AIM AT A BETTER UNDERSTANDING OF STELLAR FORMATION. I WORKED ON 2 TYPES OF STARS, M DWARFS AND L ONES, IN ORDER TO OBTAIN THEIR MULTIPLICITY STATISTICS. FOR THE FIRST TYPE OF STARS, SIX YEARS OR OBSERVING RUNS HAD BEEN DONE BY MY DIRECTORS BEFORE I ARRIVE ON A STATISTICALLY WELL DEFINED SAMPLE. IT ALLOWED ME TO OBTAIN THE FIRST COMPLETE MULTIPLICITY STATISTICS FOR M DWARFS, SHOWING A MULTIPLICITY RATE OF 25 %. FOR L DWARFS, I BEGUN THE WORK DOING OBSERVING RUNS AND DATA REDUCTION SO AS TO OBTAIN PRELIMINARY RESULTS. THE FIRST PART OF THIS MANUSCRIPT DESCRIBES STELLAR FORMATION AND THE OBJECTS I WORKED ON. THE SECOND AND THIRD PARTS ARE DEDICATED TO THE WORK I HAVE DONE ON EACH TYPE OF STARS, DESCRIBING HOW I PROCEEDED AND RESULTS I OBTAINED. SOME ADDITIONNALS CHAPTERS FIGURE AT THE END, CONTAINING FURTHER INFORMATIONS ON SOME PARTICULAR WORK AND TABLES THAT WERE TOO LONG TO BE IN THE TEXT.
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https://tel.archives-ouvertes.fr/tel-00007404
Contributor : Lydie Gialis <>
Submitted on : Thursday, January 21, 2021 - 12:27:02 PM
Last modification on : Thursday, January 28, 2021 - 3:18:02 AM

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  • HAL Id : tel-00007404, version 3

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Lydie Marchal. Statistique de multiplicite des etoiles naines de types spectraux M et L. Astrophysique [astro-ph]. Université Joseph-Fourier - Grenoble I, 2004. Français. ⟨tel-00007404v3⟩

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