2019MNRAS.482.5201K

Query : 2019MNRAS.482.5201K

2019MNRAS.482.5201K - Mon. Not. R. Astron. Soc., 482, 5201-5210 (2019/February-1)

Evidence of enhanced magnetism in cool, polluted white dwarfs.

KAWKA A., VENNES S., FERRARIO L. and PAUNZEN E.

Abstract (from CDS):

We report the discovery of a new, polluted, magnetic white dwarf in the Luyten survey of high-proper motion stars. High-dispersion spectra of NLTT 7547 reveal a complex heavy element line spectrum in a cool (≃5200 K) hydrogen-dominated atmosphere showing the effect of a surface averaged field of 163 kG, consistent with a 240 kG centred dipole, although the actual field structure remains uncertain. The abundance pattern shows the effect of accreted material with a distinct magnesium-rich flavour. Combined with earlier identifications, this discovery supports a correlation between the incidence of magnetism in cool white dwarfs and their contamination by heavy elements.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: abundances - stars: individual: NLTT 7547 - stars: magnetic field - white dwarfs

Simbad objects: 29

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Number of rows : 29
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 LAWD 96 WD* 00 02 10.7241976499 -43 09 55.390578662   13.12 13.05     DAP5.8 134 0
2 LP 644-81 WD* 00 17 37.7289431281 -05 16 46.148594007   16.9       DA 20 0
3 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
4 LP 349-35 WD* 00 31 24.9083465616 +22 18 23.531181876   17.4   16.7   DA 19 0
5 L 88-59 WD* 01 43 00.9833777734 -67 18 30.353062494   14.33 13.90 13.52 13.23 DA8.1 76 0
6 LP 884-58 WD* 01 54 05.3395327763 -30 34 32.271212287     17.08     DAZ 21 0
7 LP 649-83 WD* 02 17 19.7317803263 -06 56 28.762501130     17.89     DAZ 19 0
8 LP 830-14 WD* 02 35 21.7949399589 -24 00 47.123038900   16.4       DC 41 0
9 EGGR 565 WD* 02 46 30.8013110459 -02 27 23.461070842   16.34 15.38   15.09 DA7.4 72 0
10 EGGR 473 WD* 02 48 36.4291217434 +54 23 22.464606271   16.25   15.1   DAZ9 73 0
11 LP 887-66 WD* 03 17 12.0974045670 -29 11 34.212635877   17.6 17.49     DAZ 28 0
12 V* CL Oct WD* 03 17 15.8468594712 -85 32 25.558244556   13.78 13.66 15.19   DAP 180 1
13 EGGR 566 WD* 03 25 11.0474878302 -01 49 15.047041848   16.8 16.22     DZA9 89 0
14 LP 832-30 WD* 03 36 34.0885089149 -22 15 24.083764222   16.5 17.16     DA 21 0
15 G 160-51 WD* 04 12 26.3267623464 -11 17 47.278628664   15.6 15.446     DA 34 0
16 G 46-37 WD* 09 22 56.0652538752 +01 03 10.148001660   17.28 16.59 16.02   DAZ 23 0
17 HE 1045-0908 WD* 10 47 36.1228977120 -09 24 32.628359808   16.78 16.74     DA 31 0
18 G 197-47 WD* 12 11 29.2732556757 +57 24 17.242313993   16.34   15.3   DA8.6 66 0
19 WG 21 WD* 12 26 42.0226230528 -66 12 18.467291952   14.37 13.97     DA6.6 51 0
20 EGGR 360 WD* 13 47 24.3696354602 +10 21 38.013189353   15.49   14.8   DA7.1 104 0
21 LP 559-47 WD* 14 10 39.9774143472 +02 45 13.102075764   16.9   16.2   DAZ 22 0
22 PG 1633+434 WD* 16 35 01.4291783063 +43 17 36.347179696   15.26   14.5   DAZ7.6 85 0
23 LP 276-33 WD* 16 54 45.6926039157 +38 29 36.628370427   17.1 15.86 16.5   DZA 63 0
24 LAWD 79 WD* 19 56 29.2263375910 -01 02 32.671070269   13.89 13.56 13.73   DA6.4 158 0
25 LP 815-31 WD* 20 31 09.5660250120 -16 58 41.924043336     16.25     DAZ 16 0
26 EGGR 261 WD* 20 49 06.6996392736 +37 28 14.050387020   13.40   13.2   DA3.4 88 0
27 LAWD 83 WD* 21 13 16.8549349741 -81 49 12.878285501 13.28 13.82 13.59 13.6   DA4.8 125 0
28 WT 853 WD* 22 00 45.3745671960 -57 11 23.274992688 15.72 16.26 15.96 15.73 15.49 DAZ 24 0
29 LP 460-27 WD* 22 27 40.3575893352 +17 53 21.359666400   16.8 15.84 16.0   DAZ 25 0

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