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17th European White Dwarf Workshop: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs
Kepler, S.O. (2010)
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mla
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Kepler S. "17th European White Dwarf Workshop: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs.", timms video, Universität Tübingen (2010): https://timms.uni-tuebingen.de:443/tp/UT_20100816_008_eurowd_0001. Accessed 30 Oct 2020.
apa
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Kepler, S. (2010). 17th European White Dwarf Workshop: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs. timms video: Universität Tübingen. Retrieved October 30, 2020 from the World Wide Web https://timms.uni-tuebingen.de:443/tp/UT_20100816_008_eurowd_0001
harvard
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Kepler, S. (2010). 17th European White Dwarf Workshop: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs [Online video]. 16 August. Available at: https://timms.uni-tuebingen.de:443/tp/UT_20100816_008_eurowd_0001 (Accessed: 30 October 2020).
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title: 17th European White Dwarf Workshop: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs
alt. title: 17th European White Dwarf Workshop - Luminosity function, mass distribution and populations
creator: Kepler, S.O. (author)
subjects: Astronomie, Physik, Astrophysik, Workshop, White Dwarf, Magnetic White Dwarfs, SDSS, Mean Mass, DA White Dwarfs, DB White Dwarfs, S.O. Kepler
description: 17th European White Dwarf Workshop, 16. bis 20. August 2010
abstract: Magnetic White Dwarfs in the SDSS and Estimating the Mean Mass of Normal DA and DB WDs (S.O. Kepler1, Barbara Castanheira2, Ingrid Pesoli1, Viviane Peçanha1 and S.J. Kleinman3) (1Instituto de FÍsica da UFRGS, Brazil, 2Department of Astronomy, The University of Texas, USA 3Gemini Observatory, Hawaii, USA) Searching the 22876 spectra obtained by the Sloan Digital Sky Survey selected as possible white dwarf stars, we have detected Zeeman splittings in more than 800 stars, and estimated the fields from less than one megagauss up to around fifty megagauss, complementing the detections by Kulebi et al. 2009. These magnetic white dwarf stars cover the whole range of temperature and classes observed. Stars with multiple spectra show the field changes with time. With this new large sample of magnetic WDs, we can now look at their distributions and physical parameters. We excluded the magnetic white dwarfs from our average mass estimate of normal DAs and DBs due to the Zeeman splittings distortions of the line profiles; analysis of the remaining 1129 bright DA white dwarfs results in a mean mass Mean(M) = 0.607 ± 0.004 M (Sun), while that of our 55 bright DBs is Mean(M) = 0.656 ± 0.008 M (Sun). These bright stars were selected for their (SNRg) approx. 30
publisher: ZDV Universität Tübingen
contributor: ZDV Universität Tübingen (producer)
creation date: 2010-08-16
dc type: image
localtype: video
identifier: UT_20100816_008_eurowd_0001
language: eng
rights: Url: https://timmsstatic.uni-tuebingen.de/jtimms/TimmsDisclaimer.html?637396148350342337