Boundary-layer temperatures in high accretion rate cataclysmic variables

M.G. Hoare; J.E. Drew

Boundary-layer temperatures in high accretion rate cataclysmic variables

M.G. Hoare, J.E. Drew

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30 Citations (Scopus)

Abstract

The Zanstra method is used to derive limits on boundary-layer temperatures in eclipsing dwarf novae during outburst and nova-like variables, using the observed He II 1640 and 4686 A recombination lines. It is assumed that all the emission is produced in the wind rather than the accretion disk. This method constrains the boundary-layer temperatures to between 50,000 and 100,000 K, depending on the degree of wind bipolarity. These estimates are lower than the T in excess of 200,000 K predicted theoretically. Possible explanations include rapid rotation of the white dwarf and spreading of the boundary layer over the entire white-dwarf surface.

Original language	English
Pages (from-to)	452-459
Journal	Monthly Notices of the Royal Astronomical Society
Volume	249
Issue number	3
Publication status	Published - 1991

Keywords

dwarf novae
model atmospheres

Cite this

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title = "Boundary-layer temperatures in high accretion rate cataclysmic variables",

abstract = "The Zanstra method is used to derive limits on boundary-layer temperatures in eclipsing dwarf novae during outburst and nova-like variables, using the observed He II 1640 and 4686 A recombination lines. It is assumed that all the emission is produced in the wind rather than the accretion disk. This method constrains the boundary-layer temperatures to between 50,000 and 100,000 K, depending on the degree of wind bipolarity. These estimates are lower than the T in excess of 200,000 K predicted theoretically. Possible explanations include rapid rotation of the white dwarf and spreading of the boundary layer over the entire white-dwarf surface.",

keywords = "dwarf novae, model atmospheres",

author = "M.G. Hoare and J.E. Drew",

note = "Original article can be found at: http://adsabs.harvard.edu/basic_search.html Copyright Royal Astronomical Society [Full text of this article is not available in the UHRA]",

year = "1991",

language = "English",

volume = "249",

pages = "452--459",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press (OUP)",

number = "3",

}

TY - JOUR

T1 - Boundary-layer temperatures in high accretion rate cataclysmic variables

AU - Hoare, M.G.

AU - Drew, J.E.

N1 - Original article can be found at: http://adsabs.harvard.edu/basic_search.html Copyright Royal Astronomical Society [Full text of this article is not available in the UHRA]

PY - 1991

Y1 - 1991

N2 - The Zanstra method is used to derive limits on boundary-layer temperatures in eclipsing dwarf novae during outburst and nova-like variables, using the observed He II 1640 and 4686 A recombination lines. It is assumed that all the emission is produced in the wind rather than the accretion disk. This method constrains the boundary-layer temperatures to between 50,000 and 100,000 K, depending on the degree of wind bipolarity. These estimates are lower than the T in excess of 200,000 K predicted theoretically. Possible explanations include rapid rotation of the white dwarf and spreading of the boundary layer over the entire white-dwarf surface.

AB - The Zanstra method is used to derive limits on boundary-layer temperatures in eclipsing dwarf novae during outburst and nova-like variables, using the observed He II 1640 and 4686 A recombination lines. It is assumed that all the emission is produced in the wind rather than the accretion disk. This method constrains the boundary-layer temperatures to between 50,000 and 100,000 K, depending on the degree of wind bipolarity. These estimates are lower than the T in excess of 200,000 K predicted theoretically. Possible explanations include rapid rotation of the white dwarf and spreading of the boundary layer over the entire white-dwarf surface.

KW - dwarf novae

KW - model atmospheres

M3 - Article

SN - 0035-8711

VL - 249

SP - 452

EP - 459

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

Boundary-layer temperatures in high accretion rate cataclysmic variables

Abstract

Keywords

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