Hersent, M. Kilian (2020) Analysing the Halpha spectral line of the young star LkCa 15 PFE - Project Graduation, ENSTA.
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Abstract
Star-disk accretion process remains partly misunderstood. [9] hinted a possible characterisation of such an accretion looking at correlation of absorption components of Halpha line fitting for edge-on young star AA Tau. Such behaviour was also registered for LkCa 15 [4] but both studies failed at fully described the phenomenon because of their shortness. Based on a 6-month spectral observation campaign, this study aims at confirming and characterising such a correlation. We find a telling correlation with period of about 17.9 days for both components. Their evolution looks erratic with main periods of variations smaller than ±20km.s−1.day−1 and sparse high fluctuation epochs.
Item Type: | Thesis (PFE - Project Graduation) |
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Subjects: | Physics, Optics |
ID Code: | 8191 |
Deposited By: | Kilian Hersent |
Deposited On: | 02 oct. 2020 15:51 |
Dernière modification: | 02 oct. 2020 15:51 |
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