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

Marco C. Lam; Nigel C. Hambly; Nicholas Rowell; Kenneth C. Chambers; Bertrand Goldman; Klaus W. Hodapp; Nick Kaiser; Rolf-Peter Kudritzki; Eugene A. Magnier; John L. Tonry; Richard J. Wainscoat; Christopher Waters

doi:10.1093/mnras/sty2710

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

Marco C. Lam, Nigel C. Hambly, Nicholas Rowell, Kenneth C. Chambers, Bertrand Goldman, Klaus W. Hodapp, Nick Kaiser, Rolf-Peter Kudritzki, Eugene A. Magnier, John L. Tonry, Richard J. Wainscoat, Christopher Waters

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Journal	Monthly Notices of the Royal Astronomical Society
DOIs	https://doi.org/10.1093/mnras/sty2710
Publication status	Published - 8 Oct 2018

Keywords / Materials (for Non-textual outputs)

astro-ph.GA
astro-ph.IM
astro-ph.SR

Access to Document

10.1093/mnras/sty2710

1810.01798Accepted author manuscript, 2.16 MB

https://academic.oup.com/mnras/article/482/1/715/5123716?searchresult=1

Astronomy and Astrophysics at Edinburgh
Dunlop, J. (Principal Investigator), Best, P. (Co-investigator), Biller, B. (Co-investigator), Ferguson, A. (Co-investigator), Hambly, N. (Co-investigator), Heymans, C. (Co-investigator), Khochfar, S. (Co-investigator), Lawrence, A. (Co-investigator), Liddle, A. (Co-investigator), Mann, B. (Co-investigator), McLure, R. (Co-investigator), Meiksin, A. (Co-investigator), Peacock, J. (Co-investigator), Penarrubia, J. (Co-investigator), Rice, K. (Co-investigator) & Taylor, A. (Co-investigator)
STFC
1/04/15 → 30/09/18
Project: Research

Cite this

@article{b57b144f35924ec39b49aaa8152048bc,

title = "The White Dwarf Luminosity Functions from the Pan-STARRS 1 3π Steradian Survey",

abstract = " A large sample of white dwarfs is selected by both proper motion and colours from the Pan-STARRS 1 3\{\textbackslash{}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\{\textbackslash{}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. ",

keywords = "astro-ph.GA, astro-ph.IM, astro-ph.SR",

author = "Lam, \{Marco C.\} and Hambly, \{Nigel C.\} and Nicholas Rowell and Chambers, \{Kenneth C.\} and Bertrand Goldman and Hodapp, \{Klaus W.\} and Nick Kaiser and Rolf-Peter Kudritzki and Magnier, \{Eugene A.\} and Tonry, \{John L.\} and Wainscoat, \{Richard J.\} and Christopher Waters",

note = "18 pages, 13 figures, 2 tables in text, 4 tables in Appendix A, supplementary online materials are available on MNRAS. Accepted for publication on 3 Oct 2018",

year = "2018",

month = oct,

day = "8",

doi = "10.1093/mnras/sty2710",

language = "English",

journal = "Monthly Notices of the Royal Astronomical Society",

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publisher = "Oxford University Press",

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T1 - The White Dwarf Luminosity Functions from the Pan-STARRS 1 3π Steradian Survey

AU - Lam, Marco C.

AU - Hambly, Nigel C.

AU - Rowell, Nicholas

AU - Chambers, Kenneth C.

AU - Goldman, Bertrand

AU - Hodapp, Klaus W.

AU - Kaiser, Nick

AU - Kudritzki, Rolf-Peter

AU - Magnier, Eugene A.

AU - Tonry, John L.

AU - Wainscoat, Richard J.

AU - Waters, Christopher

N1 - 18 pages, 13 figures, 2 tables in text, 4 tables in Appendix A, supplementary online materials are available on MNRAS. Accepted for publication on 3 Oct 2018

PY - 2018/10/8

Y1 - 2018/10/8

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AB - 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.

KW - astro-ph.GA

KW - astro-ph.IM

KW - astro-ph.SR

U2 - 10.1093/mnras/sty2710

DO - 10.1093/mnras/sty2710

M3 - Article

SN - 0035-8711

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

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

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

Astronomy and Astrophysics at Edinburgh

Cite this