Sentences with phrase «brown dwarf companions»

In all, the team found 17 candidate brown dwarf companions to red dwarf stars, one brown dwarf pair, and one brown dwarf with a planetary companion.

Looking in the vicinity of the survey stars, researchers not only found several very - low - mass brown dwarf companions, but also three giant planets.

We used NaCo at VLT to explore t... ▽ More In anticipation of the VLT / SPHERE planet imager guaranteed time programs, we have conducted a preparatory survey of 86 stars between 2009 and 2013 in order to identify new faint comoving companions to ultimately carry out a comprehensive analysis of the occurence of giant planets and brown dwarf companions at wide (10 - 2000 AU) orbits around young, solar - type stars.

Finally, we analyze the sensitivity of our data to additional closer - in companions and reject the possibility of other massive brown dwarf companions down to 4 - 5 AU.

The known brown dwarf companion (HD 284149 b) is clearly visible in the IRDIS images.

It turns out that even if we do not reach the deepest sensitivity for a single star, the sheer volume of our sample allowed us to obtain an unprecedented statistical snapshot of young exoplanets and brown dwarf companions in Orion.»

© 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.

Abstract: In anticipation of the VLT / SPHERE planet imager guaranteed time programs, we have conducted a preparatory survey of 86 stars between 2009 and 2013 in order to identify new faint comoving companions to ultimately carry out a comprehensive analysis of the occurence of giant planets and brown dwarf companions at wide (10 - 2000 AU) orbits around young, solar - type stars.

Close encounter Tracing the trajectory of the star and its brown dwarf companion back in time, Mamajek's team found with 98 % confidence that Scholz's star passed within the Solar System's Oort cloud, a reservoir of comets, about 70,000 years ago.

No planetary or brown dwarf companions have been founded as yet (Lagrange et al, 2009).

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.

We aim at investigat... ▽ More Direct imaging has led to the discovery of several giant planet and brown dwarf companions.

Abstract: Direct imaging has led to the discovery of several giant planet and brown dwarf companions.

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.

Star Ba may have a brown dwarf companion (Bb or HD 98230 b) in a «torch orbit,» with an average separation of 0.06 AU in a highly circular orbit (e = 0.00) whose period is completed within four days (see Extrasolar Planets Encyclopaedia).

Abstract: In this paper we present the results of the SPHERE observation of the HD 284149 system, aimed at a more detailed characterisation of both the primary and its brown dwarf companion.

On January 7, 2002, astronomers announced the discovery of a brown dwarf companion to this Sol - type star using direct imaging (see press release and graphics), whose mass and orbit were subsequently refined with 24 years of radial - velocity observations — Crepp et al, 2012, with more details below).

Abstract: We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT / SPHERE during the SHINE exoplanet survey.

We observed the target with th... ▽ More We report the discovery of a bright, brown dwarf companion to the star HIP 64892, imaged with VLT / SPHERE during the SHINE exoplanet survey.

The data were reduced using the dedicated SPHERE pipeline, and algorithms such... ▽ More In this paper we present the results of the SPHERE observation of the HD 284149 system, aimed at a more detailed characterisation of both the primary and its brown dwarf companion.

Moreover, the brown dwarf companion to 15 Sge may eventually prove to have a highly circular orbit that is coplanar with the circumstellar disk so that planets formed in inner orbits around the star.

Note: Thanks to Andrew James for notifying us of updated mass and orbit information for the brown dwarf companion to this star.

On January 7, 2002, a team of astronomers (including Michael Liu, Debra Fischer, James Graham, James Lloyd, Geoff Marcy, and R. Paul Butler) announced the discovery of a brown dwarf companion «b» to 15 Sge by direct imaging, at the 199th Meeting of the American Astronomical Society in Washington, DC (Liu et al, 2002; in pdf; and press release and graphics).

Star Ba may have a brown dwarf companion (see Bb below) in a «torch orbit,» with an average separation of 0.06 AU in a highly circular orbit (e = 0.00) whose period is completed within four days.

The orbit of an Earth - like planet around the tight binary system that star Ba forms with its brown dwarf companion in the liquid water zone would have to be centered around 1.1 AU — a little farther than Earth's orbital distance around Sol — with an orbital period exceeding one Earth year.

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.

More information on Gliese 229 and its brown dwarf companion can be found at: the Astronomiches Rechen - Institut at Heidelberg's ARICNS, the NASA Star and Exoplanet Database, the Research Consortium on Nearby Stars (RECONS) list of the 100 Nearest Star Systems, and Roger Wilcox's Internet Stellar Database.