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The White Dwarf Luminosity Functions from the Pan-STARRS 1 3π Steradian Survey

Lam, MC, Hambly, NC, Rowell, N, Chambers, KC, Goldman, B, Hodapp, KW, Kaiser, N, Kudritzki, R-P, Magnier, EA, Tonry, JL, Wainscoat, RJ and Waters, C (2018) The White Dwarf Luminosity Functions from the Pan-STARRS 1 3π Steradian Survey. Monthly Notices of the Royal Astronomical Society, 482 (1). pp. 715-731. ISSN 0035-8711

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Abstract

A large sample of white dwarfs is selected by both proper motion and colours from the Pan-STARRS 1 3{\pi} Steradian Survey Processing Version 2 to construct the White Dwarf Luminosity Functions of the discs and halo in the solar neighbourhood. Four-parameter astrometric solutions were recomputed from the epoch data. The generalised maximum volume method is then used to calculate the density of the populations. After removal of crowded areas near the Galactic plane and centre, the final sky area used by this work is 7.833 sr, which is 83% of the 3{\pi} sky and 62% of the whole sky. By dividing the sky using Voronoi tessellation, photometric and astrometric uncertainties are recomputed at each step of the integration to improve the accuracy of the maximum volume. Interstellar reddening is considered throughout the work. We find a disc-to-halo white dwarf ratio of about 100.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2018 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: astro-ph.GA; astro-ph.GA; astro-ph.IM; astro-ph.SR
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press
Related URLs:
Date Deposited: 17 Oct 2018 10:18
Last Modified: 27 Jun 2019 10:30
DOI or Identification number: 10.1093/mnras/sty2710
URI: http://researchonline.ljmu.ac.uk/id/eprint/9499

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