2004AJ....128.1894H

Query : 2004AJ....128.1894H

2004AJ....128.1894H - Astron. J., 128, 1894-1898 (2004/October-0)

The ultraviolet spectrum of the high-field magnetic cataclysmic variable AR Ursae Majoris.

HOARD D.W., SCHMIDT G.D., SZKODY P., FERRARIO L., FRASER O., WOLFE M.A. and GANSICKE B.T.

Abstract (from CDS):

We have obtained an ultraviolet spectrum covering the range 917-1182 Å of the high-field magnetic cataclysmic variable AR Ursae Majoris when the binary was in its typical low-accretion state. The data reveal an array of deep Zeeman absorption features due to hydrogen Lyα-Lyγ, including several transitions that are normally forbidden but become enabled in the strong electric fields that exist in the atmospheres of highly magnetic white dwarfs. Spectral models indicate a magnetic field strength and structure consistent with that determined from longer wavelength Hubble Space Telescope Space Telescope Imaging Spectrograph UV observations; that is, a dipole of strength ∼235 MG offset along its axis by ∼0.15 of the stellar radius.

Abstract Copyright: ∼

Journal keyword(s): Stars: Novae, Cataclysmic Variables - Stars: Individual: Constellation Name: AR Ursae Majoris - Stars: Magnetic Fields - Ultraviolet: Stars - Stars: 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 V* AR UMa CV* 11 15 44.5891034908 +42 58 22.431026739     16.4     O9I 154 0

Query : 2004AJ....128.1894H

Basic data :
V* AR UMa -- Cataclysmic Binary
Other object types: otypes_help 		CV* (2010MNRAS), PM* (2018yCat,PM), X (1ES,RX), MIR (WISEA,WISE), WD* (WD), CV? (2021MNRAS), V* (V*), * (Gaia), blu (CSO), UV (ALEXIS), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		11 15 44.5891034908 +42 58 22.431026739 (Optical) [ 0.0398 0.0425 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 12 58.8393887868 +43 14 44.683394030 [ 0.0398 0.0425 90 ]
Gal coord. (ep=J2000) : 		167.4546823423999 +64.9664319741098 [ 0.0398 0.0425 90 ]
Proper motions mas/yr : 		-81.336 -0.881 [0.048 0.049 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -168 [15] / z(spectroscopic) -0.00056 [0.00005] / cz -167.9 [15.0]
   (Opt) E 2020ApJS..249....3A
Parallaxes (mas): 		10.1182 [0.0536] A 2020yCat.1350....0G
Spectral type: 		O9I D 2020MNRAS.491.2280S
Fluxes (10) :
V 16.4 [~] D 2014AJ....148..115S
G 16.2613 [0.0035] C 2018yCat.1345....0G
J 14.148 [0.026] C 2003yCat.2246....0C
H 13.601 [0.032] C 2003yCat.2246....0C
K 13.266 [0.036] C 2003yCat.2246....0C
u (AB) 15.422 [0.004] B 2020ApJS..249....3A
g (AB) 15.515 [0.003] B 2020ApJS..249....3A
r (AB) 15.757 [0.004] B 2020ApJS..249....3A
i (AB) 15.577 [0.004] B 2020ApJS..249....3A
z (AB) 15.171 [0.005] B 2020ApJS..249....3A
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Identifiers (16) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

SV* SON 7744 LINEAR 970699 SDSS J111544.56+425822.4 WISEA J111544.51+425822.4
ALEXIS J1114+430 2MASS J11154459+4258225 TIC 43215375 WISE J111544.51+425822.5
CSO 1153 PM J11157+4258 V* AR UMa Gaia DR3 783921244796958208
1ES 1113+43.2 RX J1115.6+4258 WD 1112+432 Gaia DR2 783921244796958208

References (154 between 1850 and 2026) (Total 154)
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

Velocities : 2    Distance : 4    Var : 1    Fe/H : 1    Plx : 2    PM : 2    SpT : 3   

   

Observing logs
XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* AR UMa

Link by name to the catalogue in VizieR :

2MASS J11154459+4258225 SDSS J111544.56+425822.4 V* AR UMa WD 1112+432 WISEA J111544.51+425822.4
WISE J111544.51+425822.5 Gaia DR3 783921244796958208 Gaia DR2 783921244796958208

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