2002A&A...381..487B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET13:48:23

2002A&A...381..487B - Astronomy and Astrophysics, volume 381, 487-490 (2002/1-2)

The high-field magnetic white dwarf LP 790-29: Not a fast rotator.

BEUERMANN K. and REINSCH K.

Abstract (from CDS):

We have investigated the nature of the magnetic white dwarf LP 790-29 = LHS 2293 by polarimetric monitoring, searching for short-term variability. No periodicity was found and we can exclude rotation periods between 4s and 1.5 hour with a high confidence. Maximum amplitudes of sinusoidal variations are ΔR<0.009mag and ΔVR<0.7% for a mean value of the R-band circular polarization of VR=+9.1±0.3%. Combined with earlier results by other authors, our observation suggests that LP 790-29 is, in fact, an extremely slowly rotating single white dwarf and not an unrecognized fast rotator and/or disguised cataclysmic variable.

Abstract Copyright:

Journal keyword(s): stars: white dwarfs - stars: rotation - stars: individual: LP 790-29

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 Feige 7 WD* 00 43 45.9804059124 -10 00 25.019673638   14.49       DBAP3 90 0
2 V* CL Oct WD* 03 17 15.8451763319 -85 32 25.561178526   13.78 13.66 15.19   DAP 148 1
3 LB 9802 WD* 03 17 19.1281232921 -85 32 31.288417104   13.78 13.66 14.43   DA 125 1
4 PG 1015+014 WD* 10 18 05.0426551840 +01 11 23.527722053   16.33 16.3     DAH 64 0
5 EGGR 535 WD* 10 38 55.5699516537 -20 40 56.832732841   15.9 16.28 15.54 15.34 DQ10P 80 0
6 V* AM CVn CV* 12 34 54.6230046722 +37 37 44.120772480   14.02 14.13 14.47   DBnnp 380 0
7 EGGR 372 WD* 17 48 07.9929730558 +70 52 35.921195401   14.55   13.5   DQ9P 126 0
8 V* AM Her AM* 18 16 13.2546541781 +49 52 04.759861155     12.30     M4.5 917 0
9 LAWD 73 WD* 19 00 10.2534325163 +70 39 51.418372586   13.24   13.5   DAP4.5 225 0
10 GD 229 WD* 20 12 22.2671811253 +31 13 48.884997524 13.62 14.77 14.85     DXP2 121 0
11 USNO-A2.0 0675-11099946 * ~ ~           ~ 1 0
12 USNO-A2.0 0675-01100282 * ~ ~           ~ 1 0

    Equat.    Gal    SGal    Ecl

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2021.03.08-13:48:24

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