Red Dwarf Systems

From Scratchpad

Exoplanetary Scratchpad [SysBP SysTBP Img]

Red dwarf planets tend to have Neptunians as their largest planets. As detection sensitivity increases, we are beginning to find more red dwarf planets.

[edit] Red Dwarves With Planets

• Gliese 876 System - Very nearby triple planet system (all of which would be within the orbit of Mercury) and the first Red Dwarf found to have planets. Contains the first found rocky planet around a normal star (the first true "Super-Earth", at epistellar distances). The outer two Jovians are in resonant orbits. Planet b is second discovered by ELODIE after 51 Peg b.
• Gliese 674 System - The nearest red dwarf known to have a planet which is also the second nearest exoplanet to the Sun. The planet is a Neptunian in a tight orbit that has a similar eccentricity as Mercury.
• Gliese 581 System - Planet c, tidally locked to its Red Dwarf star, is the first terrestrial world found within its star's habitability zone and currently the smallest known exoplanet around a normal star. Planet d is actually more likely to be habitable though. Unfortunately, no transits have been detected. Planet b is a hot Neptunian.
• Gliese 849 System - Contains the first long period exoplanet found around a red dwarf star using dopplar spectrometry. Also only the second Jupiter mass planet around a star less massive than half the Sun. Also the first confirmed Jupiter-sized planet at Neptune-like temperatures. There is evidense for a second planet.
• Gliese 436 System - Nearby red dwarf that contains one of the first Neptunians discovered. Planet b recently became the smallest exoplanet known to transit its host star and the nearest. It was found to have a steamy atmosphere with "hot ice". Also contains a 5-Earth mass terrestrial planet in a five day orbit, the smallest found around a normal star at the time.
• OGLE-2005-BLG-390L System - Has first discovered Icy Super Earth, which was detected via Micro-lensing tens of thousands of light years away and was the smallest known exoplanet around a normal star at the time.
• OGLE-2005-BLG-169L System - Contains the second discovered icy Super-Earth or Neptunian. This planet was detected via the Microlense technique.

[edit] Red Dwarves With Disks

• AU Microscopii System - AU Microscopii System

[edit] Planet Overlays

0.00 AU - <central star>
0.02 AU - Gliese 876 b
0.03 AU -------Gliese 436 b
0.04 AU ----Gliese 581 b
0.04 AU -------Gliese 674 b
0.07 AU ----Gliese 581 c
0.13 AU - Gliese 876 c
0.21 AU - Gliese 876 d
0.25 AU ----Gliese 581 d
2.34 AU -------Gliese 849 b
2.60 AU -------OGLE-2005-BLG-390L b
2.70 AU -------OGLE-3005-BLG-169L b