1996A&A...310..526R

Query : 1996A&A...310..526R

1996A&A...310..526R - Astronomy and Astrophysics, volume 310526-532 (1996/6-2)

Determination of mass flow rates in AM Herculis binaries. I. General method and application to UZ Fornacis.

ROUSSEAU T., FISCHER A., BEUERMANN K. and WOELK U.

Abstract (from CDS):

We compute cyclotron spectra of a magnetic white dwarf heated by a stream of free falling protons which loose their energy by Coulomb encounters with atmospheric electrons. Given the temperature structure of such atmosphere, we consider the variation of the field strength with height in the atmosphere. For a given surface field strength B, cyclotron spectra are then calculated as a function of the mass flow rate {dot}(m). From a comparison with observed low-state spectra of the AM Herculis binary UZ For, we determine for the first time directly the range of mass flow rates in the accretion spot, 10^–4≲{dot}(m)≲1g/cm²/s. The spot displays a core-halo structure, with the core(s) producing the higher and the halo the lower harmonics. The total low-state accretion rate of UZ For is ∼3x10¹³g/s and the spot size is ∼4x10¹⁵cm². The best fit to the cyclotron spectrum is achieved with a two spot model (B₁≃53MG, B₂≃48MG) with the low field subspot contributing about 15% to the spectral flux.

Abstract Copyright: ∼

Journal keyword(s): white dwarfs - stars: mass-loss - stars: magnetic fields - stars: individual: UZ For - novae, cataclysmic variables

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* UZ For	CV*	03 35 28.6518733656	-25 44 21.768755424						M4.5	279	0

Query : 1996A&A...310..526R

Basic data :

V* UZ For -- Cataclysmic Binary

X (RX,1eRASS,...), CV* (2012ApJ), UV (2EUVE,EUVE), MIR (WISEA,WISE), V* (V*), * (Gaia), NIR (2MASS)

03 35 28.6518733656 -25 44 21.768755424 (Optical) [ 0.0251 0.0406 90 ] A 2020yCat.1350....0G

03 33 20.8683716119 -25 54 16.571295965 [ 0.0251 0.0406 90 ]

220.3120200647954 -53.4146873708290 [ 0.0251 0.0406 90 ]

17.867 -1.265 [0.030 0.048 90] A 2020yCat.1350....0G

4.1785 [0.0575] A 2020yCat.1350....0G

M4.5 D ~

G 16.637711 [0.017246] C 2020yCat.1350....0G

J 15.317 [0.043] C 2003yCat.2246....0C

H 14.897 [0.076] C 2003yCat.2246....0C

K 14.776 [0.124] D 2003yCat.2246....0C

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`RX J0335.4-2544`	`EXO 033319-2554.2`	`TIC 144622139`	`2XMM J033528.6-254421`
`1eRASS J033528.6-254421`	`EXO 0333.3-2554`	*`V UZ For`**	`Gaia DR3 5084805635638179584`
`2EUVE J0335-25.7`	`2MASS J03352864-2544218`	`WISEA J033528.66-254421.8`	`Gaia DR2 5084805635638179584`
`EUVE J0335-25.7`	`1RXS J033528.0-254413`	`WISE J033528.65-254421.8`

References (279 between 1850 and 2026) (Total 279)
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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Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* UZ For

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`EUVE J0335-25.7`	`2MASS J03352864-2544218`	`1RXS J033528.0-254413`	*`V UZ For`**	`WISEA J033528.66-254421.8`
`WISE J033528.65-254421.8`	`Gaia DR3 5084805635638179584`	`Gaia DR2 5084805635638179584`

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