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17th European White Dwarf Workshop: The White Dwarf Age of NGC 2477
Jeffery, Elizabeth (2010)
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mla
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Jeffery E. "17th European White Dwarf Workshop: The White Dwarf Age of NGC 2477.", timms video, Universität Tübingen (2010): https://timms.uni-tuebingen.de:443/tp/UT_20100817_005_eurowd_0001. Accessed 29 Oct 2020.
apa
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Jeffery, E. (2010). 17th European White Dwarf Workshop: The White Dwarf Age of NGC 2477. timms video: Universität Tübingen. Retrieved October 29, 2020 from the World Wide Web https://timms.uni-tuebingen.de:443/tp/UT_20100817_005_eurowd_0001
harvard
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Jeffery, E. (2010). 17th European White Dwarf Workshop: The White Dwarf Age of NGC 2477 [Online video]. 17 August. Available at: https://timms.uni-tuebingen.de:443/tp/UT_20100817_005_eurowd_0001 (Accessed: 29 October 2020).
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title: 17th European White Dwarf Workshop: The White Dwarf Age of NGC 2477
alt. title: 17th European White Dwarf Workshop - White dwarf ages
creator: Jeffery, Elizabeth (author)
subjects: Astronomie, Physik, Astrophysik, Workshop, White Dwarf, White Dwarf Age, NGC 2477, Elizabeth Jeffery
description: 17th European White Dwarf Workshop, 16. bis 20. August 2010
abstract: The White Dwarf Age of NGC 2477 (Elizabeth J. Jeffery1, Ted von Hippel2, Steven DeGennaro3, David van Dyk4, Stein, Nathan5, William H. Jefferys6) (1Space Telescope Science Institute; 2Siena College; 3The University of Texas at Austin; 4The University of California, Irvine; 5Harvard University; 6The University of Texas at Austin and The University of Vermont) We present deep photometric observations of the open cluster NGC 2477 using HST/WFPC2. By identifying seven cluster white dwarf candidates, we present an analysis of the white dwarf age of this cluster, using both the traditional method of fitting isochrones to the white dwarf cooling sequence, and by employing a new Bayesian statistical technique that has been developed by our group. This new method performs an objective, simultaneous model fit of the cluster and stellar parameters (namely age, metallicity, distance, reddening, as well as individual stellar masses, mass ratios, and cluster membership) to the photometry. Based on this analysis, we measure a white dwarf age of 1.035 ± 0.054 ± 0.087 Gyr (uncertainties represent the goodness of model fits and discrepancy among models, respectively), in good agreement with the cluster’s main sequence turn off age. This work is part of our ongoing work to calibrate main sequence turn off and white dwarf ages using open clusters, and to improve the precision of cluster ages to the ~ 5% level.
publisher: ZDV Universität Tübingen
contributor: ZDV Universität Tübingen (producer)
creation date: 2010-08-17
dc type: image
localtype: video
identifier: UT_20100817_005_eurowd_0001
language: eng
rights: Url: https://timmsstatic.uni-tuebingen.de/jtimms/TimmsDisclaimer.html?637395716107743367