A dynamically-packed planetary system around GJ 667C with three super-Earths in its habitable zone [PDF]
Astronomy & Astrophysics, 2013 Q1
Anglada-Escudé, G., Jenkins, J.S.
openaire +11 more sources
Planetary Nebulae: Sources of Enlightenment [PDF]
PASP, 134, Number 022001, 2022, 2021 In this review/tutorial we explore planetary nebulae as a stage in the evolution of low-to-intermediate-mass stars, as major contributors to the mass and chemical enrichment of the interstellar medium, and as astrophysical laboratories. We discuss many observed properties of planetary nebulae, placing particular emphasis on element abundance ...
arxiv +1 more source
A PLANETARY SYSTEM AROUND THE NEARBY M DWARF GJ 667C WITH AT LEAST ONE SUPER-EARTH IN ITS HABITABLE ZONE [PDF]
The Astrophysical Journal, 2012 Accepted in ApJ Letters, 16 pages, 3 figures and 1 ...
Nader Haghighipour +18 more
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TWO PLANETARY COMPANIONS AROUND THE K7 DWARF GJ 221: A HOT SUPER-EARTH AND A CANDIDATE IN THE SUB-SATURN DESERT RANGE [PDF]
The Astrophysical Journal, 2013 29 pages, 12 figures, Accepted for publication on ...
S. Wende +10 more
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Advances in Social Sciences Research Journal, 2023 Five hundred years ago the Roman Catholic Church wrongly opposed science. In my fifty years as a scientist, I have observed the Catholic Church reaching out to science, wholly unaware of widespread corruption and cartel-like behavior under guise of science, which leads, I allege, to the Vatican aiding and abetting activities that are not only anti ...
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Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest [PDF]
, 2007 Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed using an instrument that delivers parallaxes at about 4 microarcsec on targets
Alan L. Fey +83 more
core +2 more sources
Shaping Proto-Planetary and Young Planetary Nebulae with Collimated Fast Winds [PDF]
Astrophys.J. 586 (2003) 319-337, 2002 Using two-dimensional hydrodynamical simulations, we investigate the interaction of a collimated fast wind (CFW) interacting with a spherical asymptotic giant branch (AGB) wind as the mechanism for shaping proto-planetary nebulae and young planetary nebulae.
arxiv +1 more source
New Close Binary Central Stars of Planetary Nebulae from Gaia DR3 Epoch Photometry [PDF]
, 2022 Close binary interactions perform a key role in the formation and shaping of planetary nebulae. However only a small fraction of Galactic planetary nebulae are known to host close binary systems. Many such systems are detectable through photometric variability.
arxiv +1 more source
Bayesian analysis of interiors of HD 219134b, Kepler-10b, Kepler-93b, CoRoT-7b, 55 Cnc e, and HD 97658b using stellar abundance proxies [PDF]
, 2016 Using a generalized Bayesian inference method, we aim to explore the possible interior structures of six selected exoplanets for which planetary mass and radius measurements are available in addition to stellar host abundances: HD~219134b, Kepler-10b ...
Dorn, C., Hinkel, N. R., Venturini, J.
core +2 more sources
Planetary nebulae in M32 and the bulge of M31: Line intensities and oxygen abundances [PDF]
, 1998 We present spectroscopy of planetary nebulae in M32 and in the bulge of M31 that we obtained with the MOS spectrograph at the Canada-France-Hawaii Telescope. Our sample includes 30 planetary nebulae in M31 and 9 planetary nebulae in M32. We also observed one H II region in the disk of M31. We detected [O III]$\lambda$4363 in 18 of the planetary nebulae,
arxiv +1 more source