EPNcore table of BASS2000, a Solar survey archive: Images, movies of
full Sun from groundbased instruments: Spectroheliographs of Meudon
and Coimbra, RadioHeliograph and Decametric Array of Nancay, CLIMSO,
USET
HST observations of planets, dwarf planets, and satellites, extracted
from the CADC database catalogue (with daily updates). Data are linked
to the CADC repository, with file names common to all HST archives.
Both calibrated and derived products are included. The main target is
identified. Physical ephemeris and thumbnails are provided when
available. Files and previews are not accessible during the
proprietary period.
Since 1973, the 18-cm lines of the OH radical have been
systematically observed in a number of comets with the Nançay radio
telescope. This allowed an evaluation of the cometary water production
rates and their evolution with time, as well as a study of several
physical processes: the excitation mechanisms of the OH radio lines,
the expansion of the cometary atmospheres, their anisotropy in
relation with non-gravitational forces, the Zeeman effect in relation
with the cometary magnetic field. The Nançay observations of 53
cometary apparitions between 1982 and 2009 are now organized in this
database.
"The growth of the Tharsis volcanic complex on Mars during
Noachian/Hesperian era induced a reorientation of the spin axis of the
planet (true polar wander). This service gives access to a map of Mars
topography before Tharsis formation (Early Noachian) and a map of Mars
topography before true polar wander (Late Noachian/Early Esperian),
from the model described in Bouley, S., Baratoux, D., Matsuyama, I. et
al. Late Tharsis formation and implications for early Mars. Nature
531, 344â347 (2016). https://doi.org/10.1038/nature17171 ."
"The data consists in topographic maps of synthetic 3D bodies
generated by a 3 parameters statistical model : the fractionally
integrated flux (FiF) (Lavallee, D., Lovejoy, S., Schertzer, D.,
Ladoy, P. (1993). Nonlinear variability and landscape topography:
analysis and simulation) adapted for spherical coordinates and
topography (Landais, F., Schmidt, F., and Lovejoy, S, (2018)
Topography of exoplanets, MNRAS). The 3 parameters are the following :
H: degree of smoothness; C1: degree of intermittency; alpha: degree of
multifractality; The service contains topographic maps (in Fits
format) and texture maps (in png format)."
Predictions of stellar occultations by the main planetary satellites
Short Name:
voccdb.epn_core
Date:
19 Apr 2024 14:16:01
Publisher:
Paris Astronomical Data Centre
Description:
The VOccDB database provides prediction and parameters of stellar
occultations by the main planetary satellites. Observations of a
stellar occultations help to better determine the size and the shape
of the occulting body, as well as its astrometric position at the
milli-arcsecond level precision. Only the main moons of giant planets
Jupiter, Saturn, Uranus and Neptune are considered in the event
prediction database. Predictions are provided over period 2023-2032,
up to visual magnitude 12 for the biggest satellites, and magnitude 14
for other satellites. For each stellar occultation event prediction,
the database provides circumstances and observational data, date and
timing of the occultation, star position and magnitude, excepted
duration, etc.
The database contains some outputs of the VCD for the scenarios : {1)
Standard cloud albedo Scenario, solar EUV average conditions ; 2)
Standard cloud albedo Scenario, solar EUV minimum conditions ; 3)
Standard cloud albedo Scenario, solar EUV maximum conditions ; 4) Low
cloud albedo Scenario, solar EUV average conditions ; 5) High cloud
albedo Scenario, solar EUV average conditions available}, at different
positions of latitude and longitude. These VCD outputs are provided as
Votables containing profiles of temperatures, pressures, density and
abundances of main species for altitudes between 0 and 349.5 km from
the surface.