Spectroscopy of Pre-Main Sequence Stars: TV Crt - Accretion or Dynamo?

Details Spectroscopy of Pre-Main Sequence Stars: TV Crt - Accretion or Dynamo? Spectroscopy of Pre-Main Sequence Stars: TV Crt - Accretion or Dynamo?

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002cxo..prop.1126c&link_type=abstract

Chandra Proposal ID #04200007

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Chandra Proposal Id #04200007

Scientific paper

The only high-resolution X-ray spectrum of a low-mass, pre-main sequence Classical T Tauri star, TW Hya, showed dramatic differences from all other stellar coronal spectra: very cool, sharply peaked temperature distribution, and high density. Abundances were similar to, but more extreme, than other coronae: very weak iron, and very strong neon. We attributed the X-ray emission to accretion, not to a rotationally driven magnetic dynamo. Observations of a weak-lined T Tauri star, TV Crt (HD98800), in the same association will provide a valuable comparison of a young corona w/ little or no accretion but of similar age and evolutionary history. High-resolution studies like these are required to provide a basis for interpretation of imaging surveys of other pre-main sequence systems.

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