Free Access

Table 2

Approximate number of WDs (all temperatures) with parallaxes better than a certain percentage, derived using the GUMS dataset and real WD SDSS datasets (extracted from Kilic et al. 2010a; Tremblay et al. 2011).

GUMS

All WDs Single WDs
σπ/π N % of observed N % of observed

1% 20 000 3.5% 10 000 5%
5% 150 000 25% 75 000 40%
10% 300 000 50% 135 000 70%
20% 450 000 80% 190 000 95%

WDs from SDSS samples

Kilic et al. (2010a) Tremblay et al. (2011)
σπ/π N % of observed N % of observed

1% 76 61% 500 16%
5% 125 100% 2275 74%
10% 125 100% 2880 94%
20% 125 100% 3048 99%

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.