White Dwarf WD 0843+516 Photometric Monitoring Observations by Amateurs
B. L. Gary, Last updated 2015.12.12

This web page is devoted to a photometric monitoring of white dwarf WD 0843+516 for the purpose of identifying transit features produced by an asteroid dust cloud, described by Vanderburg et al (2105) using Kepler K2 data and Croll et al (2015) using ground-based telescope data. The observations are by advanced amateurs.

WD 0843+516 (hereafter WD0843) has a hydrogen-envelope with many metal lines, indicating the presence of a continuous flow of dust onto the WD surface (and rapidly sinking). IR fluxes show the presence of a dust cloud.  

Summary of Results

No transit events have been observed.
Total observing hours = 22.5 hrs (4.6,2.5,6.0,3.2,6.2)

Observing Sessions    


2015 Dec 06

Paul Benni obtained this 6.2-hr LC.


2015 Dec 05

Paul Benni obtained this 3.2-hr LC.



2015 Dec 04

Paul Benni obtained this 6.0-hr LC.

2015 Nov 08

Paul Benni obtained this LC.


2015 Nov 08

This 4.6-hr observing session demonstrates the feasibility of monitoring WD0843 with a 14" telescope.


Maybe this fade feature is the dust cloud transit that we're looking for.

Finder Image


Finder image, 27 x 18 'arc, north-east at upper-left. Target is at 08:47:02.26 +51:28:51.9 (J2000).

References
    Vanderburg et al (2015) arXiv (Nature, 2015 Oct 22).
    Croll et al (2105) arXiv 

Return to Croll observing list main page

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WebMaster: B. Gary.  Nothing on this web page is copyrighted. This site opened:  Nov 08, 2015