X-Ray Emission at the Bottom of the Main Sequence

Details X-Ray Emission at the Bottom of the Main Sequence X-Ray Emission at the Bottom of the Main Sequence

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop...73f&link_type=abstract

Chandra Proposal ID #01200495

Physics

Chandra Proposal Id #01200495

Scientific paper

We propose to obtain AXAF ACIS-S-BI images of a sample of low mass stars and brown dwarfs. Until now, the lowest-mass dwarf detected in X-rays had been VB 8. Given the improved sensitivity of AXAF over previous missions, we are confident that coronal X-ray emission can now be detected in the very lowest mass stars and substellar objects known. Therefore, the objective of this proposal is to make such detections and thereby establish the existence of magnetic activity at the very bottom of the main sequence and beyond. Our target list includes the brown dwarfs Kelu-1 and BRI 0021-0214 along with the very low mass stars LHS 2924 and VB 10. We also request a short ACIS-S-BI image of the known X-ray source VB 8 as a prelude to future AXAF LETG observations.

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