Results 11 to 20 of about 441,928 (76)

INVESTIGATIONS OF LONG-PERIOD DQ HERCULIS STARS.

, 1986
The magnetic rotator model has long been the favored explanation for coherent photometric modulations in the DQ Herculis class of cataclysmic variables. However, to date, all evidence supporting this model has been of the indirect variety.
PENNING, WILLIAM ROY.
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Time-resolved spectrophotometry of HZ Herculis and DQ Herculis [PDF]

, 1978
The image-tube scanner at the 3 m telescope at Lick Observatory was employed to study the spectral changes which occur during the pulse period in the optical pulsars HZ Herculis (1.2 s period) and DQ Herculis (71 s period).
G.A. Chanan, Chanan, Gary Alan., Chanan, G. A.   +2 more
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Missing metals in DQ stars: A simple explanation

, 2022
Classical DQ stars are white dwarfs whose atmospheres contain detectable traces of carbon brought up to the surface by a convective dredge-up process.
Simon Blouin
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The spectrum of Nova DQ Herculis (1934) in 1950. [PDF]

, 1952
Seven spectrograms of Nova DQ Herculis obtained in May and October, 1950, reveal that the striking changes in the spectrum of the nebulosity observed between 1942 and 1949 continue, while the mean velocity of expansion remains practically the same as in ...
Swings, Polydore, Jose, P.-D.
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Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
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DataSheet_1_HLA-DQ-Specific Recombinant Human Monoclonal Antibodies Allow for In-Depth Analysis of HLA-DQ Epitopes.pdf

, 2022
HLA-DQ donor-specific antibodies (DSA) are the most prevalent type of DSA after renal transplantation and have been associated with eplet mismatches between donor and recipient HLA. Eplets are theoretically defined configurations of surface exposed amino
Cynthia S. M. Kramer (11917436), Rico Buchli (419979), Merve Uyar-Mercankaya (11917448), Kim H. Bakker (11917445), Marry E. I. Franke-van Dijk (11917439), Manon Vergunst (11917442), Suzanne Bezstarosti (11917433), Johan W. de Fijter (4909930), Dave L. Roelen (8280330), Frans H. J. Claas (8465889), Sebastiaan Heidt (4909936)   +10 more
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Time Series Photometry of DQ Herculis: An Updated Ephemeris

, 2021
Cataclysmic variable Old Nova DQ Herculis (N1934) is an eclipsing binary with anorbital period of 4h39m and is a prototype for a fast spinning accreting magnetic white dwarf.
Morales, John Francisco
core  

The origin of soft x-rays in DQ herculis [PDF]

, 2003
DQ Herculis (Nova Herculis 1934) is a deeply eclipsing cataclysmic variable containing a magnetic white dwarf primary. The accretion disk is thought to block our line of sight to the white dwarf at all orbital phases because of its extreme inclination ...
Ringwald, Frederick, Still, K., Mukai, K.   +2 more
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Missing Metals in DQ Stars; a Compelling Clue to their Origin [PDF]

White dwarf stars frequently experience external pollution by heavy elements, and yet the intrinsically carbon-enriched DQ spectral class members fail to exhibit this phenomenon, representing a decades-old conundrum.
Farihi, J., Wilson, T. G., Dufour, P.
core   +3 more sources

Gravitoastronomy with neutron stars [PDF]

, 2004
Recent advances in gravitational wave detectors mean that we can start to make astrophysically important statements about the physics of neutron stars based on observed upper limits to their gravitational luminosity.
Woan, G., Graham Woan
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