Polaris: High Mass Star Formation

Details Polaris: High Mass Star Formation Polaris: High Mass Star Formation

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1894e&link_type=abstract

Chandra Proposal ID #07200573

Computer Science

Chandra Proposal Id #07200573

Scientific paper

Polaris is the luminous component of a multiple system with at least 3 members. A marginal ROSAT HRI source has been found close to a fourth possible component. A 10 ksec Chandra ACIS exposure will establish whether this star produces X-rays, and hence is young and probably a companion of Polaris. Would this companion (5000 AU from Polaris) have been retained if the system were ejected from a cluster? Or is there a cluster of low mass stars still around Polaris? Finally, the ACIS low resolution spectrum of Polaris itself will determine whether X-rays are produced by the supergiant (comparatively soft) or a main sequence companion (much harder). A second observation (Delta Cephei) will tell us whether the amplitude of pulsation affects magnetic phenomena.

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