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The frequency of metal enrichment of cool helium-atmosphere white dwarfs using the DESI early data release

Manser, Christopher J; Gänsicke, Boris T; Izquierdo, Paula; Swan, Andrew; Najita, Joan; Rockosi, C; Carrillo, Andreia; Kim, Bokyoung; Xu, Siyi; Dey, Arjun; Aguilar, J; Ahlen, S; Blum, R; Brooks, D; Claybaugh, T; Dawson, K; de la Macorra, A; Doel, P; Gaztañaga, E; Gontcho A Gontcho, S; Honscheid, K; Kehoe, R; Kremin, A; Landriau, M; Le Guillou, L; Levi, Michael E; Li, T S; Meisner, A; Miquel, R; Nie, J; Rezaie, M; Rossi, G; Sanchez, E; Schubnell, M; Tarlé, G; Weaver, B A; Zhou, Z; Zou, H

The frequency of metal enrichment of cool helium-atmosphere white dwarfs using the DESI early data release Thumbnail


Authors

Christopher J Manser

Boris T Gänsicke

Paula Izquierdo

Andrew Swan

Joan Najita

C Rockosi

Bokyoung Kim

Siyi Xu

Arjun Dey

J Aguilar

S Ahlen

R Blum

D Brooks

T Claybaugh

K Dawson

A de la Macorra

P Doel

E Gaztañaga

S Gontcho A Gontcho

K Honscheid

R Kehoe

A Kremin

M Landriau

L Le Guillou

Michael E Levi

T S Li

A Meisner

R Miquel

J Nie

M Rezaie

G Rossi

E Sanchez

M Schubnell

G Tarlé

B A Weaver

Z Zhou

H Zou



Abstract

There is an overwhelming evidence that white dwarfs host planetary systems; revealed by the presence, disruption, and accretion of planetary bodies. A lower limit on the frequency of white dwarfs that host planetary material has been estimated to be ≃ 25–50 per cent; inferred from the ongoing or recent accretion of metals on to both hydrogen-atmosphere and warm helium-atmosphere white dwarfs. Now with the unbiased sample of white dwarfs observed by the Dark Energy Spectroscopic Instrument (DESI) survey in their Early Data Release (EDR), we have determined the frequency of metal enrichment around cool-helium atmosphere white dwarfs as 21 ± 3 per cent using a sample of 234 systems. This value is in good agreement with values determined from previous studies. With the current samples we cannot distinguish whether the frequency of planetary accretion varies with system age or host-star mass, but the DESI data release 1 will contain roughly an order of magnitude more white dwarfs than DESI EDR and will allow these parameters to be investigated.

Citation

Manser, C. J., Gänsicke, B. T., Izquierdo, P., Swan, A., Najita, J., Rockosi, C., …Zou, H. (2024). The frequency of metal enrichment of cool helium-atmosphere white dwarfs using the DESI early data release. Monthly Notices of the Royal Astronomical Society: Letters, 531(1), L27-L32. https://doi.org/10.1093/mnrasl/slae026

Journal Article Type Article
Acceptance Date Apr 2, 2024
Online Publication Date Apr 4, 2024
Publication Date Apr 4, 2024
Deposit Date May 8, 2024
Publicly Available Date May 8, 2024
Journal Monthly Notices of the Royal Astronomical Society: Letters
Electronic ISSN 1745-3933
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 531
Issue 1
Pages L27-L32
DOI https://doi.org/10.1093/mnrasl/slae026
Public URL https://durham-repository.worktribe.com/output/2435093

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Copyright Statement
Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.





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