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Sirius Bb: A Frozen Gas Giant Orbiting a Dead Star — But Its Moons...
SIRIUS Bb: THE CANDIDATE PLANET
(Exoplanet.eu catalog, 2024, submitted to journal)
PROPERTIES:
Mass: 1.5 ± 0.5 Jupiter masses (gas giant)
Orbit: 0.9 ± 0.4 AU from Sirius B
Detection: astrometry (proper motion anomaly)
Host: Sirius B (white dwarf, 25,000 K surface)
Orbit: 0.9 ± 0.4 AU from Sirius B
Detection: astrometry (proper motion anomaly)
Host: Sirius B (white dwarf, 25,000 K surface)
HABITABILITY ANALYSIS:
White dwarf habitable zone: ~0.01-0.02 AU
(because WDs are tiny and dim despite high T)
Sirius Bb at 0.9 AU = FAR outside HZ = FROZEN.
Gas giant = no solid surface anyway.
The planet itself: not habitable. Period.
(because WDs are tiny and dim despite high T)
Sirius Bb at 0.9 AU = FAR outside HZ = FROZEN.
Gas giant = no solid surface anyway.
The planet itself: not habitable. Period.
BUT — THE MOONS:
A 1.5 Jupiter-mass planet likely has moons.
Jupiter has 95 known moons. Saturn has 146.
Tidal heating from the gas giant can maintain
SUBSURFACE OCEANS on rocky moons:
Jupiter has 95 known moons. Saturn has 146.
Tidal heating from the gas giant can maintain
SUBSURFACE OCEANS on rocky moons:
Europa model (our solar system):
Ice shell over liquid water ocean.
Tidal heating from Jupiter maintains liquid.
Possible hydrothermal vents on ocean floor.
Leading candidate for extraterrestrial life.
Ice shell over liquid water ocean.
Tidal heating from Jupiter maintains liquid.
Possible hydrothermal vents on ocean floor.
Leading candidate for extraterrestrial life.
A Sirius Bb moon COULD have:
- Rocky/icy composition
- Subsurface ocean (tidal heating)
- Possibly water + minerals
- Potentially microbial life
A Sirius Bb moon CANNOT have:
- Atmosphere thick enough for surface water
- Ionosphere (= no Schumann resonance)
- Piezoelectric stone structures
- Civilization as we define it
SPECIFIC PLANET: If anything is "alive" at Sirius,
it is most likely a Europa-analog moon of Sirius Bb.
Water world. Subsurface. Simple life at best.
NOT a civilization capable of building pyramids.
Water world. Subsurface. Simple life at best.
NOT a civilization capable of building pyramids.
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