Sentences with phrase «m dwarf companion»
We calibrate our formula using 44 wide binaries containing an F, G, K, or early M primary of known metallicity and a mid - to late - M dwarf companion.
https://arxiv.org/ Not exact matches
The dusty spiral arms stand out wonderfully, and its two dwarf elliptical companions are visible: NGC 205 to the right of the spiral's bright core, and M32 almost buried in M31's arms on the left.
The event was what's known as a classical nova explosion, which occurs when a dense stellar corpse called a white dwarf steals enough material from an ordinary companion star for its gas to spontaneously ignite.
The blast from one of the Milky Way supernovas, which Rest has seen from different angles, looks symmetric, suggesting it was the result of a white dwarf stealing from its companion until it exploded — a typical type Ia.
The measurement is the distance to SS Cygni, a star system consisting of a white dwarf plus a companion.
Sandage's preferred method is to use type Ia supernovae, which arise when a white dwarf star gathers material from a companion and explodes.
These so - called supersoft sources are now thought to be white dwarf stars that cannibalize their stellar companions and then, in many cases, explode
«Right now, the star and the brown dwarf are locked in a honeymoon phase, where they both turn the same face to each other all the time,» says Beatty, «but in the future, the star will swell up and engulf its companion completely.»
When Sigurdsson and colleagues analyzed images of the white dwarf from the Hubble Space Telescope, they concluded that the distant, unseen companion is not a low - mass star, as many researchers had thought, but a planet with about 2.5 times the mass of Jupiter.
However, in a star - brown dwarf binary, the star's rotation is much slower than the brown dwarf's orbital motion, so the companion is dragged inward.
«Our knowledge of binary evolution suggests that, if the companion star can survive the transition, brown dwarfs should be common in this type of system.
PSR J1713 +0747, as it is known, has a tiny white dwarf companion star, and the two orbit each other exceptionally predictably.
In the background is the star's binary companion, Kepler - 13B, and the third member of the multiple - star system is the orange dwarf star Kepler - 13C.
Such a supernova is supposed to result when a larger companion star dumps material onto the white dwarf, triggering a runaway nuclear reaction that annihilates the small star.
Astronomers have detected a sub-stellar object that used to be a star, after being consumed by its white dwarf companion.
Although similar surveys have been attempted with the Andromeda galaxy, our galaxy's nearest neighbor, «we can not yet study its dwarf galaxy companions to the same level of detail,» he says.
Neither study searched for the stars responsible for so - called type Ia supernovae, which are explosions of white dwarf stars that have grown overweight by feasting on material from a companion star.
Such a companion must be something special, though, like a small black hole or a hunk of white - dwarf matter.
Such a shock could not have been produced if the companion were another white dwarf star.
The UCSB - led research implies that the white dwarf was stealing matter from a much larger companion star — approximately 20 times the radius of the sun — which caused the white dwarf to explode.
The first so - called helium nova, the possible result of a large white dwarf sucking material from a hydrogen - deficient companion star, may be a precursor to a supernova
Specifically, the most energetic iron emission they studied is characteristic of so - called x-ray binary starsduos comprised of a dense stellar object such as a white dwarf star, a neutron star or a black hole that collects matter from a less dense companion, emitting x-rays in the process.
In this theory material from the companion star is accreted onto the white dwarf until its mass reaches a limit, leading to a dramatic explosion.
The second theory proposes that only one star in the system is a white dwarf, while its companion is a normal star.
It was first assumed to be a nova — a white dwarf that pulls gas off a companion until it triggers a thermonuclear explosion on its surface.
This red dwarf pulls on the 55 Cancri system, and because all five planets in the system — and their host star — are such a tight - knit family, they behave like ice skaters holding hands, so that the companion star's tugs cause them all to do somersaults in space.
One is probably a red giant that is still blowing off its atmosphere; the other is most likely a white dwarf stealing gas from its giant companion and lighting up the surrounding nebula.
In the other case, the companion may be an orange dwarf, whose properties lie between those of a red dwarf and the sun.
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.
This much dimmer companion star is a main sequence, orange - red dwarf (K0 - 1 V).
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).
The closest star to the sun, proxima centauri, a companion of alpha centauri, is also a red dwarf.
Discovered to be a faint companion of Stars Aab by Ragnar Furuhjelm, Capella C is a red dwarf star of spectral and luminosity type M1 V.
Discoveries of Sun - like stars with host exoplanets as well as red dwarf companions have been common, and many appear to be old and stable enough for life to have evolved (RAS new releases of April 16 and April 19, 2011; and University of St. Andrews press release).
Its red dwarf companion B was first detected through astrometric perturbations of Star A's motion in 1976 by Sarah Lee Lippincott and J.J. Lanning.
NGC 3359 appears to be devouring a much smaller gas rich dwarf galaxy, nicknamed the Little Cub, which contains 10,000 times fewer stars than its larger companion.
The primary stars around which we searched for companions come from a list of bright stars with well - measured parallaxes and large proper motions from the Hipparcos catalog (8583 stars, mostly A-K ~ dwarfs) and fainter stars from other proper motion catalogues (79170 stars, mostly M ~ dwarfs).
No planetary or brown dwarf companions have been founded as yet (Lagrange et al, 2009).
The companion star is a very cool, main sequence red dwarf (M5.5 or M7 Ve).
Seen in the background is the star's binary companion, Kepler - 13B, and the third member of the multiple - star system is the orange dwarf star, Kepler - 13C.
More than 20 dwarf galaxy companions have been discovered in the past year, many of which were also discovered with DECam.
Perhaps the infrared light is coming from a companion small «failed» star, called a brown dwarf — or more intriguingly, from a rejuvenated planet.
We present new high - contrast data obtained during the commissioning of the SPHERE instrument at... ▽ More GJ758 B is a brown dwarf companion to a nearby (15.76 pc) solar - type, metal - rich (M / H = +0.2 dex) main - sequence star (G9V) that was discovered with Subaru / HiCIAO in 2009.
The comparison of the two datasets suggests rapid evolution of the inner regions of the disk, potentially driven by the interaction with the close - in M - dwarf companion, around which no polarimetric signal is detected.
12 systems were resolved as new binaries, including the discovery of a new white dwarf companion to the star HD8049.
The star was once suspected of having a spectroscopic companion and later a brown dwarf companion (Bernstein ESA SP402 - 97).
Abstract: GJ758 B is a brown dwarf companion to a nearby (15.76 pc) solar - type, metal - rich (M / H = +0.2 dex) main - sequence star (G9V) that was discovered with Subaru / HiCIAO in 2009.
The Milky Way, M33, and the Andromeda Galaxy plus about 40 dwarf companions, comprise what is known as the «Local Group.»
Sirius A is substantially larger than Sol, although its white dwarf companion B is smaller than Jupiter (more from ESO).