Magnetic Activity in Young Stars: the Weak-Lined T Tauri Star HDE 245059

Details Magnetic Activity in Young Stars: the Weak-Lined T Tauri Star HDE 245059 Magnetic Activity in Young Stars: the Weak-Lined T Tauri Star HDE 245059

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1647a&link_type=abstract

Chandra Proposal ID #06200517

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Chandra Proposal Id #06200517

Scientific paper

We propose to study the bright weak-lined T Tauri star, HDE 245059 Tau, with Chandra HETGS. The young star displays strong X-ray luminosity (log Lx ~ 32 erg/s), but a surprisingly cooler (6-8 MK) plasma than in several X-ray bright weak-lined T Tauri stars. Its soft X-ray spectrum is reminiscent of that of TW Hya, a classical T Tauri star whose grating X-ray spectrum revealed a cool (3 MK) plasma with high densities (log ne ~ 13 cm-3) probably due to accretion, in contrast with other classical T Tauri stars with dominant very hot (T ~ 30 MK) plasmas. We will investigate the X-ray properties of HDE 245059, and in particular determine electron densities from several He-like triplets. We will put our results in the context of the evolution with time of magnetic activity in stars.

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