Sentences with phrase «substellar object»

We further show that SPHERE is the most promising instrument available to search for close - in substellar objects around nearby white dwarfs.

On June 11, 2008, On August 24, 2006, the International Astronomical Union (IAU) voted at the meeting of its Executive Committee to establish bright «dwarf planets beyond the orbit of Neptune as a new class of substellar objects in the Solar System called «plutoids» (IAU press release).

On August 24, 2006, the International Astronomical Union voted at the end of its 26th General Assembly to establish a new class of substellar objects in the Solar System called «dwarf planets», which may eventually encompass many large and relatively round celestial objects such as inner Oort Cloud member Sedna.

The failure, thus far, to find large substellar objects like brown dwarfs or a Jupiter - or Saturn - class planet in a «torch» orbit (closer han the Mercury to Sun distance) around 107 Piscium — with even the highly sensitive radial - velocity technique of Geoffrey W. Marcy and R. Paul Butler — bodes well for the possibility of Earth - type terrestrial planets around this star (Cumming et al, 1999).

In addition, he was a pioneer in the discovery and study of magnetospheric accretion onto newly forming stars, including the use of «veiling» to measure accretion rates, and was a co-discoverer of brown dwarfs by carrying out the first successful application of the «lithium test» for substellar objects in 1995.

Brown dwarfs were originally called black dwarfs, a classification for dark substellar objects floating freely in space which were too low in mass to sustain stable hydrogen fusion.

There may be a large number of undetected bright, substellar objects similar to giant exoplanets in our own solar neighborhood, according to new work from a team led by Carnegie's Jonathan Gagné and including researchers from the Institute for Research on Exoplanets (iREx) at Université de Montréal.

The most metal - poor substellar object», Z. H. Zhang, D. Homeier, D. J. Pinfield, N. Lodieu, H. R. A. Jones, F. Allard, and Ya.

We investigate the atypical properties of the companion, which has the reddest near - infrared colours among all known substellar objects, either orbiting a star or isolated, and we provide a comprehensive characterisation of the host star - disc - companion system.

Hints of this massive substellar object were first detected in high - precision radial velocity data gathered as much as a decade ago from Lick Observatory on Mount Hamilton in Califonia.

(See an animation of the orbit of this possible substellar object around Aldebaran, with a table of basic orbital and physical characteristics.)

In addition, Ceres» light spectrum suggests that it may have ammonium - rich clay at the surface, which would fit the expected ammonia - rich composition of large, differentiated substellar objects in the outer Solar System, including the «plutoids» defined on June 11, 2008 by the International Astronomical Union (IAU) as a new class of bright «dwarf planets beyond the orbit of Neptune (IAU press release).

Since Make - make orbits the Sun beyond the orbit of Neptune, the IAU also assigned it membership to a class of substellar objects in the Solar System recently designated as «plutoids» (IAU press release).

The failure, thus far, to find large substellar objects like brown dwarfs or a Jupiter - or Saturn - class planet in a «torch» orbit (closer than the Mercury to Sun distance) around 61 Ursae Majoris — with even the highly sensitive radial - velocity methods of Geoffrey W. Marcy and R. Paul Butler — bodes well for the possibility of Earth - type terrestrial planets around this star (Cumming et al, 1999).

The failure, thus far, to find large substellar objects like brown dwarfs or a Jupiter - or Saturn - class planet in a «torch» orbit (closer than the Mercury to Sun distance) around Xi Boötis A — with even the highly sensitive radial - velocity methods of Geoffrey W. Marcy and R. Paul Butler — bodes well for the possibility of Earth - type terrestrial planets around this star (Cumming et al, 1999).

On August 24, 2006, the International Astronomical Union voted at the end of its 26th General Assembly to establish a new class of substellar objects in the Solar System called «dwarf planets», which may eventually encompass the largest, relatively round asteroids such as Ceres and perhaps eventually Vesta, Pallas, and Hygeia.

«Water is a signature of substellar objects.

The Substellar Objects in Nearby Young Clusters (SONYC) survey included the star cluster NGC 1333, 1000 light years away in the constellation of Perseus.

Eventually, it was determined that no substellar objects around CM Draconis larger than about three Jupiter - masses are orbiting closer than one AU (Doyle et al, 2000).

Caltech astronomer Ben Oppenheimer, who helped to discover the apparent brown dwarf, Gliese 229 B, is part of a growing group that would like to define a brown dwarf as an substellar object with the mass of 13 to 80 (or so) Jupiters.

Designated WISE J085510.83 - 071442.5 (but can be shortened to WISE 0855 - 0714), the substellar object is the fourth closest to the Solar System.

The comparison of our near infrared spectrum with atmosphere models, for solar metallicity, shows that CFBDSIRJ214947.2 - 040308.9 is probably a 650 - 750 K, log g = 3.75 - 4.0 substellar object.

See an animation of the orbit of this substellar object around Edasich, with a table of basic orbital and physical characteristics.

In fact, it would have been extremely difficult to detect this substellar object around a highly evolved star like Edasich, because giant stars often pulsate and produce radial velocity patterns similar to substellar companions.

University of California at Berkeley astronomer Ben R. Oppenheimer, who helped to discover a nearby brown dwarf, Gliese 229 b, is part of a growing group that would like to define a brown dwarf as an substellar object with the mass of 13 to 80 (or so) Jupiters.

Once Naud's team had the entire spectrum, they realized the object had a very low temperature, with properties similar to substellar objects like brown dwarfs or planets.

Despite suspicion of a single - lined spectroscopic binary companion, no stellar or substellar objects have been confirmed (more below).

In 1988, Campbell et al also reported finding small velocity variations that could be the result of a substellar object of one to nine times the mass of Jupiter that may orbit Xi Boötis B.

Based on the infrared luminosity and color of the substellar object, the mass of this brown dwarf is estimated to be between 28 and 58 Jupiter - masses based on an estimated age of the star system of between two and eight billion years (Wright et al, 2012).

(See an animation of the orbit of this substellar object around Aldebaran A, with a table of basic orbital and physical characteristics.)

In fact, it is extremely difficult to confirm the detection of this substellar object around a highly evolved star like Aldebaran, because giant stars often pulsate and produce radial velocity patterns similar to substellar companions.

Recently, astronomers detected a brown dwarf companion of HR 4374 (also listed in the Henry Draper catalogue as HD 98230) which has been designated by its discoverers as HD 98230 B; this substellar object has a minimum mass equivalent to at least 37 Jupiter - sized planets but moves in a very close orbit of only 0.06 astronomical units (closer than Mercury) to its host star with a period (or local «year») of less than four days.

Once the first brown dwarf candidates were actually found, however, astronomers realized that it was actually quite difficult to definitely rule on the validity of competing hypotheses about how a substellar object was actually formed without having been there.