Fandom

Scratchpad

EV Clarified Giants

215,870pages on
this wiki
Add New Page
Discuss this page0 Share

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.

Exoplanetary Scratchpad

[SysBP Img]

Clarified Giants are giant planets that are too hot for volatile clouds to form, but not hot enough for non-volatiles clouds to form. They appear sky-blue in color. Here is a list of Clarified Jovians and Clarified Neptunians as appear on Extrasolar Visions. For an updated list, see Clarified Giants.

Clarified Jovians

  • HD 192263 System - A cloudless blue jovian around an orange dwarf star.
  • HD 330075 System - A cloudless blue jovian around an orange dwarf star.
  • HD 59686 System - A cloudless blue jovian around an orange giant star.
  • HD 102117 System - A cloudless blue jovian around an yellow dwarf star.
  • HD 104985 System - A cloudless blue jovian around an yellow giant star.
  • HD 47536 System - Very large orange giant star with two large eccentric jovian discovered by the European-Brazilian team. The inner planet is at Earth-like distance, but is too hot for clouds to appear.
  • Epsilon Reticuli System - A cloudless blue jovian around an orange sub-giant star.
  • HD 130322 System - A cloudless blue jovian around an orange dwarf star.
  • HD 178911 System - A cloudless blue jovian around one of the two yellow giant star in a binary system.
  • HD 11964 System - Sunlike star with two eccentric gas giants detected in 2005. The outermost one was retracted but then re-confirmed as one of the 28 planets announced at the May 2007 AAS media briefing. The inner most has half the mass of Saturn and is too hot for clouds. The outer one is cool and likely dominated by white water clouds. A middle planet may also exist.
  • HD 121504 System - A cloudless blue jovian around an yellow dwarf star.
  • HD 195019 System - A cloudless blue jovian around an yellow dwarf star.
  • HD 99492 System - A cloudless blue jovian around an orange dwarf star.
  • HD 27894 System - A cloudless blue jovian around an orange dwarf star.
  • 55 Cancri System - Wide binary star consisting of a sun-like primary (A) and a red-dwarf secondary (B) separated by 1,100 AU, 41 light years away. Star A contains five exoplanets, the first system found with this many. It has three tightly packed eccentric planets close in to the star, including planet e (hot Super Earth/Neptunian), b (hot Jupiter), and c (hot Saturn). Planet e was the first Neptunian discovered. It was later found to be the shortest-period planet discovered (18 hours) and to transit. The planet has about half of Neptune's mass, but is Earth-like in size and density (2.17 Earth Radius). It is composed 70% of rock and the outer 30% is likely an ocean of super-critical water (between a gas and liquid state) that is 3000km thick. This is the hottest and densest super-Earth and the is the most watery planet found to date. It likely possesses a thick atmosphere of CO and CO2. The brightness of the star (also closest known to transit and only known naked eye star to do so) makes it more easily studied than other hot super Earths. Planet f is a very eccentric Saturnian in the habitable zone. Planet d is a super jovian at Jupiter-like distances, which was the first found at true Jupiter distances and still the exoplanet discovered with dopplar spectrometry with the largest known semi-major axis. The distant outer star causes planet d's axis to flip on its axis every million years. Planet d in turn causes the other planets to flip, including its star. The axis tilt of transiting planet e should be determined at some point. "Bode's law" predicts four undiscovered planets.
  • HD 2638 System - A cloudless blue jovian around an yellow dwarf star.
  • Rho Coronae Borealis System - Has the first planet discovered closer than its star's habitability zone but not a Hot Jupiter or an Eccentric Giant. This planet was the first detected by the AFOE team. A dust disk was detected the same year as the planet, making it the first system observed to have both.
  • HD 101930 System - A cloudless blue jovian around an orange dwarf star.
  • Gliese 86 System - Contains the first exoplanet discovered by CORALIE of the Geneva southern extrasolar planet search programme. A cloudless blue heavy jupiter and a white dwarf around an orange star.

Eccentric Clarified Jovians

  • 79 Ceti System - A yellow subgiant star around which the smaller of the first 2 Saturnians discovered (HD 46375 b was the other one) is in a Mercury-like orbit.
  • HD 216770 System - Template:HD 216770 System
  • HD 169830 System - Bright star with two eccentric planets known in 2003. One is likely too hot to have any clouds, while the other one is likely to sport white water cloud bands.
  • HD 168443 System - Contains the first planet discovered whose minimum mass was near the planet/brown dwarf boundary which orbits at a asteroid belt-like distance. Also contains a second huge planet at least 7 times as massive as Jupiter orbiting at Mercury-like distances.
  • 54 Piscium System - Nearby star with an eccentric planet. A recently discovered faint distant T type brown dwarf may be the cause of this eccentricity.
  • HD 52265 System - One of the six extrasolar systems known to have planets to be first shown to also have a dust disk by Spitzer. Planet independently discovered by CORALIE and Carnegie teams and is roughly Jupiter-sized in a hot eccentric orbit.
  • HD 34445 System - Template:HD 34445 System
  • HD 74156 System - Sunlike star with two planets more massive than Jupiter, one in about Mercury's position, and one at an Asteroid Belt-like position. A planet was predicted in between these two at Earth-like distances and later found, the first vindicated prediction since Neptune. This supports the "Packed Planetary Systems" theory. Some have suggested that it's one Earth year orbit period may mean its detection is due to Earth based observation errors.
  • 55 Cancri System - Wide binary star consisting of a sun-like primary (A) and a red-dwarf secondary (B) separated by 1,100 AU, 41 light years away. Star A contains five exoplanets, the first system found with this many. It has three tightly packed eccentric planets close in to the star, including planet e (hot Super Earth/Neptunian), b (hot Jupiter), and c (hot Saturn). Planet e was the first Neptunian discovered. It was later found to be the shortest-period planet discovered (18 hours) and to transit. The planet has about half of Neptune's mass, but is Earth-like in size and density (2.17 Earth Radius). It is composed 70% of rock and the outer 30% is likely an ocean of super-critical water (between a gas and liquid state) that is 3000km thick. This is the hottest and densest super-Earth and the is the most watery planet found to date. It likely possesses a thick atmosphere of CO and CO2. The brightness of the star (also closest known to transit and only known naked eye star to do so) makes it more easily studied than other hot super Earths. Planet f is a very eccentric Saturnian in the habitable zone. Planet d is a super jovian at Jupiter-like distances, which was the first found at true Jupiter distances and still the exoplanet discovered with dopplar spectrometry with the largest known semi-major axis. The distant outer star causes planet d's axis to flip on its axis every million years. Planet d in turn causes the other planets to flip, including its star. The axis tilt of transiting planet e should be determined at some point. "Bode's law" predicts four undiscovered planets.
  • Iota Draconis System - (aka Edasich) Contains the first planet discovered orbiting a giant star, proving planets at Earth-like distances can survive the evolution of their stars to giant phase. It is in an eccentric orbit at 1.5 AU, which aided its detection as giant stars have pulsations which can mimic the presence of a planet.
  • HD 73526 System - System with two large orbit-crossing Jovians locked in 1:2 resonance that would span the inner solar system to the asteroid belt. The second planet was one of the 28 planets announced at the May 2007 AAS media briefing.
  • HD 11977 System - Template:HD 11977 System
  • HD 6434 System - Template:HD 6434 System
  • HD 37605 System - Contains the first exoplanet discovered by the Hobby-Eberly Telescope (HET), which was the third most eccentric planet found, ranging from Hot Jupiter distance to Mercury-like distance.
  • HD 177830 System - Template:HD 177830 System
  • HD 208487 System - Template:HD 208487 System
  • HD 89744 System - Contains a highly eccentric planet which was recently studied to determine what other planets could exist in the system.
  • HD 114762 System - Multiple star system with a planet.
  • 70 Virginis System -
  • HD 117618 System - Template:HD 117618 System
  • Upsilon Andromedae System - A nearby (44 ly) multi-star system which is the first multiplanet system found around a main sequence star. The main star around which the planets orbit is a yellow-white star somewhat younger than the sun and its companion is a red dwarf in a wide orbit. It is one of the most well studied non-transiting star systems. Roaster Planet b (0.05 au, 1.4 MJ, e=0.013) is nicknamed the Fire and Ice Planet because it is hot on one side and cold on the other. The hottest parts of the planet are near the trailing side terminator at the equator, due to high velocity winds transporting heat to the night side. This is 80deg offset from the starward pole and a much greater offset than other observed hot Jupiters. This threw astronomers off and caused them to doubt the wind-theory, though later observations of other planets have shown that winds indeed can travel fast enough to cause this. The middle planets c (0.83 au, 14 MJ, may actually be a brown dwarf star, e=0.224) and d (2.5 au, 10 MJ, e=0.26) have had their inclinations and masses determined with astrometry. They are very eccentric and highly inclined to each other (30 deg). Planet scattering was thought to be a source until the outermost planet was discovered. This is planet e (5.2 au, 1.05 MJ, e = 0.005), which is the most Jupiter-like exoplanet known, and is in 3:1 resonance with planet d. The star appears to have no Kuiper-belt like disc, perhaps due to its companion star sweeping away this material.
  • HD 154857 System - Template:HD 154857 System

Clarified Neptunians

  • Gliese 876 System - Very nearby quadruple planet system and the first Red Dwarf found to have planets. The innermost planet (d) was the first found rocky planet around a normal star (the first true Super-Earth, at epistellar distances). The outer three planets c (Saturnian), b (Jovian), and e (Neptunian) are in 1:2:4 (30d/60d/120d) resonance (the exoplanet resonance and first triple-resonant planets discovered). The outermost planet has a Mercury-like orbit however it is very much colder than Mercury. Gliese 876 e actually receives only slightly more warmth from Gliese 876 than Jupiter does from our Sun. Planet b is second discovered by ELODIE after 51 Peg b and the second to have its mass exactly measured and the first to have done so by astrometry.
  • Gliese 436 System - The second known red dwarf planetary system. Contains one of the first Neptunians discovered. Planet b temporarily later found to be the smallest exoplanet (about Uranus' diameter, though over 50% its mass) known to transit its host star and is currently the nearest (33 ly). Its temperature (712K) was measured to be higher than what it would be purely from radiation (520K), perhaps due to a greenhouse effect, somewhat higher than Venus. It was originally thought to have a layer of "hot ice", water solidified due to high pressures. It turned out that it was larger than thought and hot ice was not needed. It could still be a rocky super-Earth. It was later found to have a remarkably low levels of Methane and high levels of Carbon Monoxide for its 800K temperature. Possible explanations include Methane being changed into hydrocarbon polymers due to its star's ultraviolet radiation, CO being drafted upwards with winds, or observational defects. It's significant eccentricity suggests a possible neighboring planet. Planet c was announced to be the smallest known exoplanet (1.5 Earth's diameter), but was later retracted because variations in transit timing of the first planet did not occur and the proposed orbit would be unstable. It is still thought that a second planet of some kind is possible in the system.
  • Gliese 777 System - Outer planet of the primary star was initially believed to be a Jupiter analog, but later found to be eccentric (its apastron is at Jupiter-like distance). Its second planet was the fourth Neptunian discovered and was announced with four other "second" planets in 2005.

Also on Fandom

Random wikia