Journal ArticleDOI
An ancient planetary nebula surrounding the old nova GK Persei
M. F. Bode,E. R. Seaquist,D. A. Frail,J. A. Roberts,D. C. B. Whittet,A. Evans,J. S. Albinson +6 more
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TLDR
In this paper, the authors examined Infrared Astronomical Satellite (IRAS) images in the region of the nova GK Persei and discovered extended emission in the far infrared, interpreted in terms of an ancient planetary nebula ejected from the central binary system.Abstract:
Classical novae are a subset of the cataclysmic variable (CV) class of objects which undergo outbursts with peak luminosities ˜5×l037–5×l038 erg s–1 every 104–105 years. Around 10–5–10–4M⊙ of material is ejected at velocities typically 1,000 km s–1 at outburst. The central system is a semi-detached binary containing a white dwarf and (usually) a late-type, main-sequence companion. The companion fills its Roche lobe, and loses material, via an accretion disk, onto the surface of the white dwarf. Orbital periods are normally found to be in the range 3–10 h with CV orbits generally of low eccentricity (see ref. 1 for a review). As part of a continuing programme of observations of the old nova GK Persei, we examined Infrared Astronomical Satellite (IRAS) images in the region of the nova, and discovered extended emission in the far infrared. These observations are interpreted in terms of an ancient planetary nebula ejected from the central binary system. If this interpretation is correct, then several unique phenomena associated with GK Per may be explained. In addition, GK Per would then provide valuable clues to the evolutionary status of classical novae, and the later stages of planetary nebula formation.read more
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Journal ArticleDOI
X-Ray Emissions from Accreting White Dwarfs: A Review
Koji Mukai,Koji Mukai +1 more
TL;DR: In this article, the authors review the existing body of research on X-ray emissions from interacting binaries in which a white dwarf accretes material from a companion-cataclysmic variable (CVs) and discuss open questions and future prospects.
Journal ArticleDOI
The Hα surface brightness–radius relation: a robust statistical distance indicator for planetary nebulae
David J. Frew,David J. Frew,Quentin A. Parker,Quentin A. Parker,Quentin A. Parker,Ivan S. Bojičić,Ivan S. Bojičić,Ivan S. Bojičić +7 more
TL;DR: In this paper, the Hα surface brightness-radius (SHα-r) relation was developed to measure the distances to Galactic planetary nebulae (PNe) by using a calibrated sample of primary calibrating PNe.
Journal ArticleDOI
Planetary Nebulae: Observational Properties, Mimics and Diagnostics
David J. Frew,Quentin A. Parker +1 more
TL;DR: The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago as discussed by the authors.
Book ChapterDOI
Sources of Stardust in the Galaxy
TL;DR: In this article, mass loss rates and Galactic stellar population distributions are used to estimate the rate of injection of stardust into the ISM, and it is shown that stellar dust injection with depletion by star formation and supernova shocks suggests that dust grains are produced by accretion in molecular clouds at 1 to 5 times the stellar rate.
Journal ArticleDOI
Binary Central Stars of Planetary Nebulae Discovered Through Photometric Variability. I. What We Know and What We Would Like to Find Out
TL;DR: In this paper, the authors assess the status of knowledge of binary central stars discovered because of irradiation effects and find that only 9 out of 12 irradiated binaries have periods smaller than 1 day, a fact that is at odds with post-common envelope predictions.
References
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Journal ArticleDOI
Optical properties of interstellar graphite and silicate grains
Bruce T. Draine,Hyung Mok Lee +1 more
Journal ArticleDOI
Observed Properties of Interstellar Dust
Blair D. Savage,John S. Mathis +1 more
TL;DR: In this paper, a review of recent information on the observed properties of interstellar dust is presented, with an attempt made to clarify some of the observational uncertainties associated with obtaining dust parameters.
Journal ArticleDOI
On the physics of dust grains in hot gas.
TL;DR: In this article, the potentials of dust grains in hot (10/sup 4/6/7/8/9/K) plasma were studied, including photoelectron and secondary electron emission, field emission, and transmission of electrons and ions through the grain; resulting grain potentials are considerably smaller in magnitude than found by Burke and Silk.
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