Stellar coronal spectroscopy with the Chandra HETGS

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dc.contributor.author Huenemoerder, David en_US
dc.contributor.author Boroson, Bram en_US
dc.contributor.author Schulz, Norbert en_US
dc.contributor.author Canizares, Claude en_US
dc.contributor.author Buzasi, Derek en_US
dc.contributor.author Preston, Heather en_US
dc.contributor.author Kastner, Joel en_US
dc.date.accessioned 2006-05-22T19:15:12Z en_US
dc.date.available 2006-05-22T19:15:12Z en_US
dc.date.issued 2004-01 en_US
dc.identifier.citation ASP Conference Series IAU Symposium 219: Stars as Suns: Activity, Evolution, Planets en_US
dc.identifier.uri http://hdl.handle.net/1850/1843 en_US
dc.description Also archived in: arXiv: astro-ph/0310319 v1 11 Oct 2003 en_US
dc.description Published in: Stars as suns : activity, evolution and planets, Proceedings of the 219th symposium of the International Astronomical Union held during the IAU General Assembly XXV, Sydney, Australia, 21-25 July 2003. Edited by A.K. Dupree and A.O. Benz. San Francisco, CA: Astronomical Society of the Pacific (ASP), 2004, p.238 en_US
dc.description.abstract Spectroscopy with the Chandra High Energy Transmission Grating Spectrometer (HETGS) provides details on X-ray emission and activity from young and cool stars through resolution of emission lines from a variety of ions. We are beginning to see trends in activity regarding abundances, emission measures, and variability. Here we contrast spectra of TV Crt, a weak-lined T Tauri star (WTT), with TW Hya, a Classical T Tauri star (CTT). TV Crt has a spectrum more like magnetic activity driven coronae, relative to the TW Hya spectrum, which we have interpreted as due to accretion-produced X-rays. We have also observed the long period system, IM Pegasi to search for rotational modulation, and to compare activity in a long period active binary to shorter period systems and to the pre-main sequence stars. We detected no rotational modulation, but did see long-duration flares. en_US
dc.description.sponsorship Support for this work was provided by NASA contract NAS8-01129, SAO SV1-61010 (CXC/MIT), and NASA-Chandra Award Number G02-3005A issued by the CXC, which is operated by SAO for and on behalf of NASA under contract NAS8-39073. We also thank the Air Force Office of Scientific Research for their support. en_US
dc.format.extent 112777 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Astronomical Society of the Pacific en_US
dc.relation.ispartofseries Vol. 20 en_US
dc.relation.ispartofseries Symposium 219 en_US
dc.subject Coronal emission en_US
dc.subject Spectroscopy en_US
dc.subject Stars - pre-main-sequence en_US
dc.subject X-rays - emissions en_US
dc.title Stellar coronal spectroscopy with the Chandra HETGS en_US
dc.type Proceedings en_US

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