Results 11 to 20 of about 304,786 (306)
Exploring Martian Magnetic Fields with a Helicopter
The Planetary Science Journal, 2023 The era of helicopter-based surveys on Mars has already begun, creating opportunities for future aerial science investigations with a range of instruments.
Anna Mittelholz +8 more
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The Planetary Theory of Solar Activity Variability: A Review
Frontiers in Astronomy and Space Sciences, 2022 Commenting the 11-year sunspot cycle, Wolf (1859, MNRAS 19, 85–86) conjectured that “the variations of spot-frequency depend on the influences of Venus, Earth, Jupiter, and Saturn.” The high synchronization of our planetary system is already nicely ...
Nicola Scafetta, Antonio Bianchini
doaj +1 more source
Composition of Massive Giant Planets [PDF]
, 2010 The two current models for giant planet formation are core accretion and disk instability. We discuss the core masses and overall planetary enrichment in heavy elements predicted by the two formation models, and show that both models could lead to a ...
Durisen +5 more
core +1 more source
Multiple Molecular H2 Outflows in AFGL 618 [PDF]
, 2003 We report high spatial (0.5 arcsec) and high spectral (9 km/s) resolution spectro-imaging of the 2.12 micron H2 1-0 S(1) line in the proto-planetary nebula AFGL 618 using BEAR at the CFHT.
Burton M. G. +11 more
core +2 more sources
The Habitable Zone Gallery [PDF]
, 2012 The Habitable Zone Gallery (www.hzgallery.org) is a new service to the exoplanet community which provides Habitable Zone (HZ) information for each of the exoplanetary systems with known planetary orbital parameters.
Dawn M. Gelino +2 more
core +3 more sources
Filamentary structures in planetary nebulae
Astrophysics and Space Science, 2007 We have studied small-scale, filamentary features in 14 planetary nebulae and found that some structures are recurrent and shaped like the letters V and Y, with the apex or stem pointing toward the central parts of the nebula. Two such filaments containing dust, one in NGC 3132 and one in NGC 7293, were investigated in more detail. The mass and density
Hanna Dahlgren +2 more
openaire +2 more sources
Fine Structure in Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1974 A short report is presented on the aperture synthesis radio observations of planetary nebulae performed by Terzian et al. (1974). Examples of radio maps at 8085 MHz are shown with angular resolutions of the order of 2″ to 3″.
openaire +1 more source
A Planetary lensing feature in caustic-crossing high-magnification microlensing events
, 2012 Current microlensing follow-up observations focus on high-magnification events because of the high efficiency of planet detection. However, central perturbations of high-magnification events caused by a planet can also be produced by a very close or a ...
Albrow +27 more
core +1 more source
Signatures of Planets in Spatially Unresolved Disks [PDF]
, 2005 Main sequence stars are commonly surrounded by debris disks, composed of cold dust continuously replenished by a reservoir of undetected dust-producing planetesimals. In a planetary system with a belt of planetesimals (like the Solar System's Kuiper Belt)
Amaya Moro‐Martin +11 more
core +1 more source
Small-scale structures in planetary nebulae [PDF]
, 2021 Two planetary nebulae (PNe) were studied in order to investigate small scale molecular structures in planetary nebulae, the survival of which affects the structure and composition of the interstellar medium (ISM) from which the next generation of stars is born.
openaire +2 more sources