Slightly closer to home, at least in our own galaxy, another study also published in Nature looks at a single red dwarf star
in a way that is a step forward in astronomers' search for life beyond Earth.
A large team of Japanese scientists hypothesized that "Type Ia supernova could be the result of a white dwarf star
consuming helium from a companion star.
The newly discovered super-Earth LHS 1140b orbits in the habitable zone around a faint red dwarf star
, named LHS 1140, in the constellation of Cetus (The Sea Monster).
Such a shock could not have been produced if the companion were another white dwarf star
," the statement said.
Dressing identified 95 planetary candidates orbiting red dwarf stars
Using the Keck I telescope in Hawaii, Ben Zuckerman of UCLA and colleagues found that each of two polluted white dwarf stars
snarfed at least 10 quadrillion metric tons of rocky dust.
com/can-planets-near-red-dwarf-stars-support-life-nasa-says-dont-bet-it-2548417) Red dwarf stars
give off less energy than other stars do so they might not emit enough energy to keep planets in the traditional habitable zone warm enough.
The IAC researcher and first author of the paper Jonay Gonzalez Hernandez added, "We have conducted an exhaustive exploration of the area around where the explosion of the supernova of 1006 occurred and have found nothing, which invites us to think that this event was probably the result of a collision and merger of two white dwarf stars
of similar mass".
such as GJ 436, which is less than half the sun's mass, are the most common stars.
The PHL pointed the telescope toward Ross 128 while observing a whole group of red dwarf stars
- smaller, cooler and less luminous than our sun.
In the biggest survey to date of the chemical composition of the atmospheres of white dwarf stars
, the researchers found that the most frequently occurring elements in the dust around these four white dwarfs were oxygen, magnesium, iron and silicon - the four elements that make up roughly 93 per cent of the Earth.
are the most common type of star in the galaxy, and the discovery suggests new places to search for life, Udry says.