Sentences with phrase «red dwarfs at»

The gas giant exoplanet orbits the binary red dwarfs at a distance of 300 million miles — approximately the distance of the solar system's asteroid belt from the sun.

Not exact matches

Whether in the red giants, the medium yellows or the white dwarfs, we may surmise at the presence in the center of heavy and extremely unstable elements possessing a greater atomic weight than uranium (unless these are simply «ordinary matter» reduced to a physical state of extraordinary compression).

This is because at the moment he is only on # 35,000 a week, a wage that could be dwarfed by any offer from the Red Devils.

According to Nikole Lewis, Webb's project scientist at the Space Telescope Science Institute in Baltimore, the telescope could perform the simultaneous detection of methane, carbon dioxide and carbon monoxide in the atmospheres of some planets around red dwarf stars.

But the Carina association, where this red dwarf was found, is a group of stars whose motions through the Galaxy indicate that they were all born at roughly the same time in the same stellar nursery.

It orbits a red dwarf — a small, cool, faint star — at 2.6 times Earth's distance from the sun.

Although Kepler and Corot are focusing on sunlike stars that could support true analogues of Earth, much of the action at ground - based telescopes is concentrating on red dwarf stars, for the simple reason that planets are easier to find there.

Project Blue's proposed telescope would have a light - gathering mirror just half a meter wide — so small that it could only look for Earth - like planets around two stars: the Sun - like Alpha Centauri A and Alpha Centauri B, which along with the red dwarf Proxima Centauri form the nearest star system to our own at just over four light - years away.

Named PH1, the planet goes around two of the four stars, shown close - up here: One is a yellow - white F - type star that is slightly warmer and more luminous than our sun; the other, at the 11 o'clock position, is a red dwarf, cooler and dimmer than the sun.

If phototrophs keep their photosynthetic apparatus for landing, the red - edge position of the land surface on M - dwarf planets show just like as on the Earth, at the initial stage of land vegetation.

Researchers at the Astrobiology Center (ABC) of National Institutes of Natural Science (NINS) in Japan and their colleagues have proposed a prediction that red - edge could be observed as on the Earth even on exoplanets around M - dwarfs.

It orbits a dim, red dwarf star (shown at left) about 200 light - years from Earth.

As for the distant future, astronomers dream of an infrared counterpart to Gaia, which would be able to peer through the Milky Way's dust cloud into its very center, and also would excel at detecting and measuring faint red and brown dwarf stars in the solar neighborhood.

Mercedes Lopez - Morales, an astronomer at the Harvard - Smithsonian Center for Astrophysics, has modeled the possibilities of magnetic fields around red dwarf planets, and a picture is gradually emerging: The planets likely form in the outer parts of their solar systems and migrate in.

The new survey will pick targets from a list of about 70,000 red dwarfs compiled by Andrew West at Boston University, and will listen to the stars in radio frequency bands between 1 and 10 gigahertz.

Previous work has looked at the impact of stellar flares from a red dwarf on a nearby planet.

The team used a computer model developed at the University of Michigan to represent three known red - dwarf planets circling a simulated, middle - aged red dwarf.

Red dwarfs are erratic, prone to blasts of lethal radiation, and because the planets are so close, «they feel the effects of the star,» says NASA astronomer Elisa Quintana, who also works at Goddard.

The research also suggests that habitable - zone super-Earth planets (where liquid water could exist and making them possible candidates to support life) orbit around at least a quarter of the red dwarfs in the Sun's own neighbourhood.

The study identifies that virtually all red dwarfs, which make up at least three quarters of the stars in the Universe, have planets orbiting them.

«Virtually all red dwarf stars have at least one planet in orbit around them.»

Astronomers using the TRAPPIST - South telescope at ESO's La Silla Observatory, the Very Large Telescope (VLT) at Paranal and the NASA Spitzer Space Telescope, as well as other telescopes around the world [1], have now confirmed the existence of at least seven small planets orbiting the cool red dwarf star TRAPPIST - 1 [2].

19 At the other end of the wetness scale, planet GJ 1214b, which orbits a red dwarf star, may be almost entirely water.

Or it may be influenced by a tidal tug from the star's red dwarf binary companion (HR 4796B), located at least 54 billion miles from the primary star.

© Estate of John Whatmough — larger image (Artwork from Extrasolar Visions, used with permission from Whatmough) Glowing red through gravitational contraction, the candidate brown dwarf companion to Proxima Centauri is depicted with two moons (one eclipsing the flare star) with distant Alpha Centauri A and B at upper right, as imagined by Whatmough.

© Torben Krogh & Mogens Winther, (Amtsgymnasiet and EUC Syd Gallery, student photo used with permission) Alp Cen B is an orange - red dwarf star, like Epsilon Eridani at left center of meteor.

It appears to be a main sequence red dwarf star of spectral and luminosity type M4.5 V. Because of its small mass and great distance from the primary (Star A), Upsilon Andromedae B appears to have a negligible effect on the radial velocity measurements used to determine that Star A has at least three large planets (Lowrance et al, 2002).

In 2006, astronomers discovered a very dim («mid-range»), red dwarf companion to HD 189733 A of spectral and luminosity type M V. Observed at a separation of 216 AUs from Star A, the companion star has a clockwise orbit that is nearly perpendicular to the orbital plane of transiting planet b around Star A (HD 189733 b or Ab).

Given at least nine meters (roughly 30 feet) of water on the planet, photosynthetic microbes (including mats of algae, cyanobacteria, and other photosynthetic bacteria) and plant - like protoctists (such as floating seaweed or kelp forests attached to the seafloor) could be protected from «planet - scalding» ultraviolet flares produced by young red dwarf stars, according to Victoria Meadows of Caltech, principal investigator at the NASA Astrobiology Institute's Virtual Planetary Laboratory.

© Torben Krogh & Mogens Winther, (Amtsgymnasiet and EUC Syd Gallery, student photo used with permission) 54 Piscium is an orange - red dwarf star, similar to Epsilon Eridani at left center of meteor.

Red dwarf stars, which only have some 10 to 50 percent of the Sun's mass but comprise perhaps 85 percent our Milky Way galaxy's stars, radiate most strongly at invisible infrared wavelengths and produce little blue light.

© Torben Krogh & Mogens Winther, (Amtsgymnasiet and EUC Syd Gallery, student photo used with permission) Gliese 105 A is an orange - red dwarf star, like Epsilon Eridani at left center of meteor.

NASA — larger image CM Draconis Aab are dim red dwarf stars, like Gliese 623 A (M2.5 V) and B (M5.8 Ve) at lower right.

Under red dwarf stars, plant - type life on land may not be possible because photosynthesis might not generate sufficient energy from infrared light to produce the oxygen needed to block dangerous ultraviolet light from such stars at the very close orbital distances needed for a planet to be warmed enough to have liquid water on its surface.

A likely explanation is that planets migrate during formation, and that red dwarfs are extremely efficient at moving their planets close to the star where Kepler can observe them (Figure 4).

NASA — larger image Proxima is a dim red dwarf star, like Gliese 623 A (M2.5 V) and B (M5.8 Ve) at lower right.

But planets orbiting dimmer, cooler red dwarf stars might be at the right temperature for life even if they are so close.

NASA — larger image Groombridge 34 AB are dim red dwarf stars, like Gliese 623 A (M2.5 V) and B (M5.8 Ve) at lower right.

In order to be warmed sufficiently have liquid water at the surface, an Earth - type rocky planet would have to be located very close to such a cool and dim red dwarf star like CD - 51 5974.

Nearly 900 extrasolar planets have been confirmed to date, but now for the first time astronomers think they are seeing compelling evidence for a planet under construction in an unlikely place, at a great distance from its diminutive red dwarf star.

Red dwarfs may host at least one planet, according to a new study.

We only have limited resources and technology available to us and currently looking at nearby red dwarfs is a good opportunity to find exoplanets which we can hopefully start to characterise in the near future.

The National Science Foundation's Arecibo Observatory and the Planetary Habitability Laboratory of the University of Puerto Rico at Arecibo joins forces with Red Dots today to learn a bit more about the nearest red - dwarfs and its -LSB-.Red Dots today to learn a bit more about the nearest red - dwarfs and its -LSB-.red - dwarfs and its -LSB-...]

The red spot at the north pole of Charon, the largest moon of Pluto, may have been produced by methane from the dwarf planet's atmosphere.

Due to the faintness of the red dwarf, its radiation pressure is insufficient to stop a sail craft flying at 20 % of the speed of light before it collides with its surface.

Sure, Gliese 1132b isn't «Earth - like» by any stretch of the imagination — it's hot, probably toxic, has a day as long as a year and liquid water can't exist on its surface — but the fact that it has an atmosphere at all provides clues that other red dwarf exoplanets are likely out there with their own atmospheres able to resist the onslaught of their ferocious stars.

Di Stefano and Ray calculated that a red dwarf with a tenth of the mass of the Sun could hold onto its planets in the dense environment at the centre of a globular cluster for tens of billions of years.

All three stars appear to be M - type red dwarfs near the hydrogen burning mass limit — at least 75 Jupiter masses — with an aggregate mass of about 34 percent of Sol's (Woitas et al, 2000; or Defosse et al, 1999).

© Torben Krogh & Mogens Winther, (Amtsgymnasiet and EUC Syd Gallery, student photo used with permission) BD - 05 1123 A is an orange - red dwarf star, like Epsilon Eridani at left center of meteor.

NASA — larger image Luyten's is a dim red dwarf star, like Gliese 623 A (M2.5 V) and B (M5.8 Ve) at lower right.