Results 11 to 20 of about 306,106 (208)
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
doaj +1 more source
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
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
Shape, structure, and morphology in planetary nebulae [PDF]
Proceedings of the International Astronomical Union, 2011 AbstractA revival over the past two decades in planetary nebula (PN) morphological studies springs from a combination of factors, including the advent of wide-area, high dynamic range detectors; the growing archives of high resolution images from the X-ray to the sub-mm; and the advent of sophisticated models of the co-evolution of PNe and their ...
openaire +2 more sources
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
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
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
Structure augmented monocular saliency for planetary rovers
Robotics and Autonomous Systems, 2017 This paper proposes a novel object detection method based on the visual saliency model in order to reliably detect objects such as rocks from single monocular planetary images. The algorithm takes advantage of the relatively homogeneous and distinct albedos present in planetary environments such as Mars or the Moon to extract a Digital Terrain Model of
Conrad Spiteri +2 more
openaire +4 more sources
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
Unveiling the structure of the planetary nebula M 2-48: Kinematics and physical conditions [PDF]
, 2002 The kinematics and physical conditions of the bipolar planetary nebula M 2-48 are analysed from high and low dispersion long-slit spectra. Previous CCD narrow-band optical observations have suggested that this nebula is mainly formed by a pair of ...
A. Raga +37 more
core +2 more sources