Serendipitous O star ACIS HETG spectra

Details Serendipitous O star ACIS HETG spectra Serendipitous O star ACIS HETG spectra

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.168n&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

Computer Science

Stellar Spectroscopy

Scientific paper

O stars have been frequent targets for ACIS HETG grating spectra. The resulting spectra from the primary targets of these observatiions are available in TGCat and XAtlas. However, a number of additional O stars, many of which have dispersed spectra, fall in the fields of view of the ACIS HETG grating observations. The spectra from these additional O stars have not previously been extracted. We extracted all O star spectra projected on the field of view of any ACIS HETG grating observation that are within 2 arcmin of the aim point. While some of these new O star spectra have insufficient S/N for analysis, there are several spectra that are useful for evaluating the detailed evolution of O stars and O star wind parameters. The newly extracted O stars are compared to the available grid of O star spectral morphology with respect to spectral class and luminosity class. The new data presented here represent one of the unexplored benefits of the Chandra dataset.

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