Zobrazeno 1 - 10
of 111
pro vyhledávání: '"David J. Frew"'
Autor:
Heintz, W. D.
Publikováno v:
American Scientist, 1997 Mar 01. 85(2), 182-182.
Externí odkaz:
https://www.jstor.org/stable/27856740
Publikováno v:
Proceedings of the International Astronomical Union. 12:36-39
The HASH (Hong Kong/ AAO/ Strasbourg/ Hα) planetary nebula research platform is a unique data repository with a graphical interface and SQL capability that offers the community powerful, new ways to undertake Galactic PN studies. HASH currently cont
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af79a1e336c6f9b6ea6c1b6d4ca000d6
https://doi.org/10.1017/s1743921317000904
https://doi.org/10.1017/s1743921317000904
A combination of archival multi-frequency radio observations with narrow-band HAlpha optical imagery and new confirmatory optical spectroscopy have shown that candidate supernova remnant G6.31+0.54 can now be confirmed as part of a Galactic supernova
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20a17c6fb0f5ec1767e61e419886e82b
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 455:1459-1488
Measuring the distances to Galactic planetary nebulae (PNe) has been an intractable problem for many decades. We have now established a robust optical statistical distance indicator, the H$\alpha$ surface brightness- radius or S-r relation, which add
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52c354b4a9f29c90eb3c09f0c9ab2e68
https://doi.org/10.1093/mnras/stv1516
https://doi.org/10.1093/mnras/stv1516
Autor:
Dimitri Douchin, David J. Frew, Jean-Claude Passy, Michael T. Fitzgerald, George H. Jacoby, Maxwell Moe, D. Harmer, Orsola De Marco, G. Jasniewicz, Todd C. Hillwig
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 448:3132-3155
There is no conclusive explanation of why ∼80 per cent of planetary nebulae (PNe) are non-spherical. In the Binary Hypothesis, a binary interaction is a preferred channel to form a non-spherical PN. A fundamental step to corroborate or disprove the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcc508bc4314e6b3330049dfc60b77e6
https://doi.org/10.1093/mnras/stu2700
https://doi.org/10.1093/mnras/stu2700
Publikováno v:
The Emergence of Astrophysics in Asia ISBN: 9783319620800
Australia has a long astronomical tradition, extending back as much as 50,000 years. However, in this chapter we will only very quickly review the developments that occurred in Australian astronomy during the eighteenth and nineteenth centuries, befo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ab1074ac3b7aa9b336ddcfe1154613c
https://doi.org/10.1007/978-3-319-62082-4_17
https://doi.org/10.1007/978-3-319-62082-4_17
Autor:
Orsola De Marco, Romano L. M. Corradi, Jochen Eislöffel, Quentin A. Parker, David J. Frew, Albert A. Zijlstra, Helen Barker, Janet E. Drew
Publikováno v:
Barker, H, Zijlstra, A, De Marco, O, Frew, D J, Drew, J E, Corradi, R L M, Eisloeffel, J & Parker, Q A 2017, ' The binary fraction of planetary nebula central stars : The promise of VPHAS+ ', Monthly Notices of the Royal Astronomical Society . https://doi.org/10.1093/mnras/stx3240
The majority of planetary nebulae (PNe) are not spherical, and current single-star models cannot adequately explain all the morphologies we observe. This has led to the Binary Hypothesis, which states that PNe are preferentially formed by binary syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3ce9b6d9cb8dd5a70dfe75406720836
Autor:
Quentin A. Parker, Dimitri Douchin, Milorad Stupar, Ashkbiz Danehkar, Michael T. Fitzgerald, David J. Frew, Stefanie Wachter, Ivan S. Bojičić, K. DePew
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 440:1345-1364
We have conducted a detailed multi-wavelength study of the peculiar nebula Abell 48 and its central star. We classify the nucleus as a helium-rich, hydrogen-deficient star of type [WN4-5]. The evidence for either a massive WN or a low-mass [WN] inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c509242e5ed8c61d5c8d3479c473eda
https://doi.org/10.1093/mnras/stu198
https://doi.org/10.1093/mnras/stu198
Autor:
David J. Frew
Determining the demographics of the Galactic planetary nebula (PN) population is an important goal to further our understanding of this intriguing phase of stellar evolution. The Galactic population has more than doubled in number over the last 15 ye
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4baf73735dc83a1a4a78a6d6342439a6
http://arxiv.org/abs/1612.02147
http://arxiv.org/abs/1612.02147
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 431:2-26
We present a catalogue of new integrated H-alpha fluxes for 1258 Galactic planetary nebulae (PNe), with the majority, totalling 1234, measured from the Southern H-Alpha Sky Survey Atlas (SHASSA) and/or the Virginia Tech Spectral-line Survey (VTSS). A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f089790a78ecf60a08c7c23cc1825201
https://doi.org/10.1093/mnras/sts393
https://doi.org/10.1093/mnras/sts393