{ "id": "0910.2753", "version": "v1", "published": "2009-10-15T00:07:02.000Z", "updated": "2009-10-15T00:07:02.000Z", "title": "Fundamental Parameters of Cepheids: Masses and Multiplicity", "authors": [ "Nancy Remage Evans" ], "journal": "Evans, N. R. 2009, \"Stellar Pulsation: Challenges for Theory and Observation\", ed. J. A. Guizik and P. A. Bradley, AIP Conf. 1170, p. 69", "categories": [ "astro-ph.GA", "astro-ph.SR" ], "abstract": "Masses determined from classical Cepheids in binary systems are a primary test of both pulsation and evolutionary calculations. The first step is to determine the orbit from ground-based radial velocities. Complementary satellite data from Hubble, FUSE, IUE, and Chandra provide full information about the system. A summary of recent results on masses is given. Cepheids have also provided copious information about the multiplicity of massive stars, as well as the distribution of mass ratios and separations. This provides some important constraints for star formation scenarios including differences between high and low mass results and differences between close and wide binaries.", "revisions": [ { "version": "v1", "updated": "2009-10-15T00:07:02.000Z" } ], "analyses": { "subjects": [ "97.30.Gj", "97.10.Sj", "95.55.-n" ], "keywords": [ "fundamental parameters", "multiplicity", "low mass results", "star formation scenarios", "complementary satellite data" ], "tags": [ "journal article" ], "publication": { "doi": "10.1063/1.3246577" }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 834054, "adsabs": "2009AIPC.1170...69E" } } }