2016MNRAS.462L..84H

Query : 2016MNRAS.462L..84H

2016MNRAS.462L..84H - Mon. Not. R. Astron. Soc., 462, L84-L87 (2016/October-2)

White dwarf pollution by planets in stellar binaries.

HAMERS A.S. and PORTEGIES ZWART S.F.

Abstract (from CDS):

Approximately 0.2 ± 0.2 of white dwarfs (WDs) show signs of pollution by metals, which is likely due to the accretion of tidally disrupted planetary material. Models invoking planet-planet interactions after WD formation generally cannot explain pollution at cooling times of several Gyr. We consider a scenario in which a planet is perturbed by Lidov-Kozai oscillations induced by a binary companion and exacerbated by stellar mass-loss, explaining pollution at long cooling times. Our computed accretion rates are consistent with observations assuming planetary masses between ∼0.01 and 1 MMars, although non-gravitational effects may already be important for masses <=0.3 MMars. The fraction of polluted WDs in our simulations, ∼0.05, is consistent with observations of WDs with intermediate cooling times between ∼0.1 and 1 Gyr. For cooling times <=0.1 Gyr and >=1 Gyr, our scenario cannot explain the high observed pollution fractions of up to 0.7. Nevertheless, our results motivate searches for companions around polluted WDs.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): planet-star interactions - stars: chemically peculiar - white dwarfs - white dwarfs

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 LBQS 1145+0145 WD* 11 48 33.6297189672 +01 28 59.420446860           DB 216 0

Query : 2016MNRAS.462L..84H

Basic data :
LBQS 1145+0145 -- White Dwarf
Other object types: otypes_help 		* (1992ApJS,EPIC,...), WD* (1992ApJS,WD), WD? (2018MNRAS), QSO (LBQS), EB* (2016AJ), Opt (SDSS)
ICRS coord. (ep=J2000) : 		11 48 33.6297189672 +01 28 59.420446860 (Optical) [ 0.0754 0.0600 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 45 59.9170490692 +01 45 40.291033773 [ 0.0754 0.0600 90 ]
Gal coord. (ep=J2000) : 		269.8500485730851 +60.2522309712248 [ 0.0754 0.0600 90 ]
Proper motions mas/yr : 		-43.664 -4.027 [0.105 0.075 90] A 2020yCat.1350....0G
Parallaxes (mas): 		6.8534 [0.0907] A 2020yCat.1350....0G
Spectral type: 		DB D 1992ApJS...78..409B
Fluxes (6) :
G 17.145735 [0.003365] C 2020yCat.1350....0G
u (AB) 16.832 [0.007] C 2008ApJS..175..297A
g (AB) 16.985 [0.004] C 2008ApJS..175..297A
r (AB) 17.288 [0.005] C 2008ApJS..175..297A
i (AB) 17.559 [0.007] C 2008ApJS..175..297A
z (AB) 17.822 [0.023] C 2008ApJS..175..297A
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Identifiers (7) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

WD 1145+017 HE 1145+0145 SDSS J114833.62+012859.4 Gaia DR3 3796414192429498880
EPIC 201563164 LBQS 1145+0145 Gaia DR2 3796414192429498880

References (216 between 1850 and 2026) (Total 216)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Distance : 2    Var : 1    Fe/H : 3    Plx : 2    PM : 3    SpT : 3   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : LBQS 1145+0145

Link by name to the catalogue in VizieR :

WD 1145+017 LBQS 1145+0145 SDSS J114833.62+012859.4 Gaia DR2 3796414192429498880 Gaia DR3 3796414192429498880

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