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17th European White Dwarf Workshop: A Spectroscopic Survey of Bright DA White Dwarfs
Gianninas, Alexandros (2010)
clipboard
mla
clipboard		 Gianninas A. "17th European White Dwarf Workshop: A Spectroscopic Survey of Bright DA White Dwarfs.", timms video, Universität Tübingen (2010): https://timms.uni-tuebingen.de:443/tp/UT_20100816_002_eurowd_0001. Accessed 26 Apr 2024.
apa
clipboard		 Gianninas, A. (2010). 17th European White Dwarf Workshop: A Spectroscopic Survey of Bright DA White Dwarfs. timms video: Universität Tübingen. Retrieved April 26, 2024 from the World Wide Web https://timms.uni-tuebingen.de:443/tp/UT_20100816_002_eurowd_0001
harvard
clipboard		 Gianninas, A. (2010). 17th European White Dwarf Workshop: A Spectroscopic Survey of Bright DA White Dwarfs [Online video]. 16 August. Available at: https://timms.uni-tuebingen.de:443/tp/UT_20100816_002_eurowd_0001 (Accessed: 26 April 2024).
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title: 17th European White Dwarf Workshop: A Spectroscopic Survey of Bright DA White Dwarfs
alt. title: 17th European White Dwarf Workshop - Luminosity function, mass distribution and populations
creator: Gianninas, Alexandros (author)
subjects: Astronomie, Physik, Astrophysik, Workshop, White Dwarf, Spectroscopic Survey, Bright DA White Dwarfs, Alexandros Gianninas
description: 17th European White Dwarf Workshop, 16. bis 20. August 2010
abstract: A Spectroscopic Survey of Bright DA White Dwarfs (A. Gianninas1, P. Bergeron1, M. T. Ruiz2) (1Département de Physique, Université de Montréal, Montréal, Québec, Canada - 2Departamento de Astronomía, Universidad de Chile, Santiago, Chile) We have conducted a survey of bright (V · 17.5) hydrogen-line (DA) white dwarfs based largely on the last published version of the McCook and Sion catalog. Our sample consists of a total of 1334 high signalto-noise ratio (S/N > 50) optical spectra, over 700 of which were obtained specifically during the course of this survey both in the northern and southern hemispheres. We combine the latest atmosphere models with our spectroscopic technique to accurately derive the atmospheric parameters, namely the effective temperature and surface gravity, for each star. In some cases, more detailed models are required whereas more involved fitting procedures are necessary to extract information from the composite spectra of DA+dM binary systems and double-degenerate systems. We present here the final results of our analysis. This includes an examination of the global properties of our sample, analyses of several unique objects and systems, as well as revisiting the ZZ Ceti instability strip and the determination of its empirical boundaries.
publisher: ZDV Universität Tübingen
contributor: ZDV Universität Tübingen (producer)
creation date: 2010-08-16
dc type: image
localtype: video
identifier: UT_20100816_002_eurowd_0001
language: eng
rights: Url: https://timmsstatic.uni-tuebingen.de/jtimms/TimmsDisclaimer.html?638497528583593216