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- ID:
- ivo://CDS.VizieR/J/A+A/544/A29
- Title:
- 2009 Saturnian satellites mutual events
- Short Name:
- J/A+A/544/A29
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The photometry of mutual occultations and eclipses of natural planetary satellites can be used to infer very accurate astrometric data. This can be achieved by processing the light curves of the satellites observed during international campaigns of photometric observations of these mutual events. This work focuses on processing the complete database of photometric observations of the mutual occultations and eclipses of the Saturnian satellites made during the international campaign in 2009. The final goal is to derive new accurate astrometric data.
- ID:
- ivo://CDS.VizieR/J/A+A/383/296
- Title:
- Saturnian Satellites positions (1996-2000)
- Short Name:
- J/A+A/383/296
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- 199 frames of CCD images of the major satellites of Saturn (Mimas, Enceladus, Tethys, Dione, Rhea, Titan, Hyperion and Iapetus), obtained on 1-meter telescope at the Yunnan Observatory during the years of 1996-2000, are measured. These positions are compared to the ones computed with the Vienne & Duriez ephemerides (TASS1.7). The calibrated parameters of the CCD scale and orientation are determined by the comparison of their measurement coordinates with computed positions of four bright satellites of Tethy, Dione, Rhea and Titan. A catalog of 913 differential positions has been obtained. Analysis of the data as inter-satellite positions shows that these observations of the above mentioned four satellites have root-mean-square residuals of 0.04 arcsec in the sense of (O-C) (Observed minus Computed). The positional measuring procedure is proved to be good enough to obtain a small dispersion in the observations for the major Saturn satellites. The format of the present catalog are very near to the one of (Strugnell & Taylor, 1990A&AS...83..289S). The coordinates are corrected by all astrometric effects. So, these positions are really astrometric ones in that meaning that, no astrometric consideration is necessary to use them, even if one wants to touch up the calibration. Nevertheless, the raw pixels are also given in order to allow anyone to reduce again the frames.
- ID:
- ivo://CDS.VizieR/J/A+A/621/A113
- Title:
- Saturn lightning episodes of storm F
- Short Name:
- J/A+A/621/A113
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The paper analyzes a lightning storm on Saturn that raged for 7.5 months at a planetocentric latitude of 35 deg. south from 27 November 2007 until 15 July 2008. The storm system produced about 277000 lightning events termed SEDs (for Saturn Electrostatic Discharges) that were detected by the Cassini RPWS (Radio and Plasma Wave Science) instrument. The SEDs are organized in episodes, lasting typically for half a Saturn rotation. SEDs can be detected when the observer Cassini is within the radio horizon (usually when the storm and Cassini are on the same side of the planet), and they are not detected when Cassini is beyond the radio horizon (Cassini and the storm on opposite sides). Saturn's atmospheric storm features have a much higher angular velocity than Cassini around Saturn, so that one SED episode is typically related to one Saturn rotation. The SEDs from this storm, lasting from the end of Nov. 2007 until mid-July 2008 (termed storm F), occurred in 439 SED episodes.
- ID:
- ivo://CDS.VizieR/J/A+A/493/1183
- Title:
- Saturn major satellites observations (1874-2007)
- Short Name:
- J/A+A/493/1183
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The last catalogue of observations (Strugnell & Taylor, 1990A&AS...83..289S) includes about 51000 observations (over 3500 nights) of Saturnian satellites from 1874 to 1989. Since 1989, many observations have been published, often in different format, specific to the publication. This new catalogue of observations of the eight major satellites of Saturn includes the observations of Strugnell & Taylor (1990A&AS...83..289S), many other published since 1989 and also old observations forgotten in the previous catalogue. All those observations are tabulated in the consistent format. We precise, for each observation, the corrections applied for reduction like refraction, aberration or phase effects. Furthermore, when it was possible, instrument and catalogue are also indicated. The new catalogue presents more than 130000 observations (over 6000 nights) of the eight major satellites of Saturn from 1874 to 2007.
- ID:
- ivo://CDS.VizieR/J/A+A/422/377
- Title:
- 1997-2000 Saturn's satellites astrometry
- Short Name:
- J/A+A/422/377
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The raw measured pixel coordinates of the major Saturnian satellites obtained using a CCD camera on the 1.56m reflector at the Sheshan station during the period 1997-2000. For each CCD frame JD and decimal fractions of the middle of the exposures are given in universal Time. Satellite numbers conform to IAU numbering system.
- ID:
- ivo://CDS.VizieR/J/A+AS/121/65
- Title:
- 1990-1994 Saturn's satellites astrometry
- Short Name:
- J/A+AS/121/65
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this paper, we publish 1206 measurements of positions of the major satellites of Saturn made in 1990, 1991, 1993 and 1994 using CCD detectors attached to the 1-metre Jacobus Kapteyn Telescope on the island of La Palma. Analysis of the data as inter-satellite positions shows that the observations of Tethys, Dione, Rhea and Titan have root-mean-square residuals of 0.08 arcseconds, corresponding to 500km at the distance of Saturn.
- ID:
- ivo://CDS.VizieR/J/A+AS/136/257
- Title:
- Saturn's satellites in 1995/97
- Short Name:
- J/A+AS/136/257
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this paper, we publish measurements of 1514 positions of the major satellites of Saturn made in 1995 and 1997 using CCD detectors attached to the 1-metre Jacobus Kapteyn Telescope on the island of La Palma. Analysis of the data as inter-satellite positions shows that the observations of Tethys, Dione, Rhea and Titan have root-mean-square residuals of 0.08 arc-seconds in 1995 and 0.10 arc-seconds in 1997.
- ID:
- ivo://CDS.VizieR/III/185
- Title:
- Search for Jupiter-Mass Companions
- Short Name:
- III/185
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- From 1980 to 1992, the radial velocities of 17 bright solar-type dwarf and 4 subgiant stars were monitored at the Canada-France-Hawaii 3.6-m telescope (CFHT).
- ID:
- ivo://CDS.VizieR/VI/151
- Title:
- Search for radio emission from giant exoplanets
- Short Name:
- VI/151
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The intensity of Jupiter's auroral radio emission quickly gave rise to the question whether a comparable coherent emission from the magnetosphere of an exoplanet could be detectable. An exoplanetary radio emission would have to be at least 1000 times more intense than Jupiter's emission to be detectable with current radio telescopes. Theoretical models suggest that, at least in certain cases, the radio emission of giant exoplanets may indeed reach the required intensity. At the same time, in order to generate such an emission, an exoplanet would have to have a sufficiently strong intrinsic planetary magnetic field. Extrasolar planets are indeed expected to have a planetary magnetic field, but to date, their magnetic field has never been detected. We will show that the most promising technique to observe exoplanetary magnetic fields is indeed to search for the planetary auroral radio emission. The detection of such an emission would thus constitute the first unambiguous detection of an exoplanetary magnetic field. We will review recent theoretical studies and discuss their results for the two main parameters, namely the maximum emission frequency and the intensity of the radio emission. The predicted values should allow the detection using modern low-frequency radio telescopes. We will present an ongoing observation program with the Low Frequency Array (LOFAR), which has the potential to detect exoplanetary radio emission.
