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1. Positions of Mars obtained in Nikolaev Astronomical Observatory
ID:
ivo://nao.ua/catalogs/mars
Title:
Positions of Mars obtained in Nikolaev Astronomical Observatory
Short Name:
Mars_pos
Date:
05 Dec 2018 17:51:36
Publisher:
Nikolaev Astronomical Observatory
Description:
Observations of Mars were carried out with the Zonal Astrograph at Nikolaev Astronomical Observatory. The mean period of observations in opposition was 156 days. The orbits of Mars and Earth were covered 7.3 and 3.8 times respectively. After defining more exactly some computational elements and the planet's phase, 441 positions were obtained in ICRS system. Coordinates of reference stars were taken from Hipparcos and Tycho catalogues, and their proper motions were taken from the ACTRC catalogue. The standard errors in right ascension and declination are ±0."21 and ±0."22 respectively, in accordance with accuracy estimations of the Institute of Applied Astronomy of the Russian Academy of Science. These standard errors are the best among all known photographic observations of Mars. Topocentric right ascension, declination in ICRS system (J2000.0), and Julian Days (UTC) are given in the table.
2. Radial velocities of Kepler-34b & Kepler-35b
ID:
ivo://CDS.VizieR/J/other/Nat/481.475
Title:
Radial velocities of Kepler-34b & Kepler-35b
Short Name:
J/other/Nat/481.
Date:
21 Oct 2021
Publisher:
CDS
Description:
Most Sun-like stars in the Galaxy reside in gravitationally bound pairs of stars (binaries). Although long anticipated the existence of a 'circumbinary planet' orbiting such a pair of normal stars was not definitively established until the discovery of the planet transiting (that is, passing in front of) Kepler-16. Questions remained, however, about the prevalence of circumbinary planets and their range of orbital and physical properties. Here we report two additional transiting circumbinary planets: Kepler-34(AB)b and Kepler-35(AB)b, referred to here as Kepler-34b and Kepler-35b, respectively. Each is a low-density gas-giant planet on an orbit closely aligned with that of its parent stars. Kepler-34b orbits two Sun-like stars every 289 days, whereas Kepler-35b orbits a pair of smaller stars (89% and 81% of the Sun's mass) every 131 days. The planets experience large multi-periodic variations in incident stellar radiation arising from the orbital motion of the stars. The observed rate of circumbinary planets in our sample implies that more than ∼1% of close binary stars have giant planets in nearly coplanar orbits, yielding a Galactic population of at least several million.
3. Spectra of planets
ID:
ivo://padc.obspm.planeto/spectro_planets/q/epn_core
Title:
Spectra of planets
Short Name:
Spectro Planets
Date:
23 Nov 2022 16:23:22
Publisher:
Paris Astronomical Data Centre
Description:
This service provides a compilation of global spectra of planets and satellites in the visible and NIR range, for quick reference purpose. It is made from various libraries, including the Tohoku-Hiroshima-Nagoya Planet Spectra Library (Lundock et al 2009) and spectra from a USGS web site (R. Clark). Reformatted VOtable versions are provided together with links to the original data.
4. Stellar parameters of KOI stars
ID:
ivo://CDS.VizieR/J/other/Nat/486.375
Title:
Stellar parameters of KOI stars
Short Name:
J/other/Nat/486.
Date:
21 Oct 2021
Publisher:
CDS
Description:
The abundance of heavy elements (metallicity) in the photospheres of stars similar to the Sun provides a "fossil" record of the chemical composition of the initial protoplanetary disk. Metal-rich stars are much more likely to harbour gas giant planets, supporting the model that planets form by accumulation of dust and ice particles5. Recent ground-based surveys suggest that this correlation is weakened for Neptunian-sized planets. However, how the relationship between size and metallicity extends into the regime of terrestrial-sized exoplanets is unknown. Here we report spectroscopic metallicities of the host stars of 226 small exoplanet candidates discovered by NASA's Kepler mission, including objects that are comparable in size to the terrestrial planets in the Solar System.