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About 6% of white dwarfs show infrared excess due to a disk around a white dwarf. [66] In the past only a relative small sample of white dwarf disks was known. [67] Due to advances in white dwarf detection (e.g. with Gaia or LAMOST) and improvement of WISE infrared catalogs with unWISE/CatWISE, the number has increased to hundreds of candidates.
Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations.
One orbits around WD 1202−232 (LP 852-7) and the other around WD 2105−82 (LAWD 83). If confirmed they would be the first directly imaged planets that likely formed from circumstellar disk material, representing a new population of directly imaged giant planets that are more similar to solar system giants in age and probably also in their ...
There is only one confirmed Y-dwarf that co-moves with a white dwarf, called WD 0806−661 B. [29] Though of planetary mass, Rodriguez et al. suggest it is unlikely to have formed in the same manner as planets. [8] Additionally there is the T/Y companion Ross 19B, which orbits a main-sequence star. [30]
WD 0837+185: 4.2 hours [10] brown dwarf extreme mass ratio of the progenitor, with the primary having a mass of 3.5-3.7 M ☉ and the secondary 25-30 M J: RR Caeli: 7.3 hours [6] red dwarf eclipsing binary DE Canum Venaticorum: 8.7 hours [6] red dwarf eclipsing binary central source of Hen 2-11: 14.616 hours [11] K-type main sequence star
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Ultrastar is a Western Digital brand of high performance 3.5-inch hard disk drives (HDDs) and solid-state drives (SSDs). [1] The brand was originally introduced by IBM in 1994 for HDDs and was adopted and renamed to "HGST Ultrastar" by HGST after it acquired IBM's HDD business in 2003. Western Digital continued using the HGST prefix for a while ...
A CBS News investigation found dozens of law enforcement leaders — sheriffs, captains, lieutenants, chiefs of police — buying and illegally selling firearms, even weapons of war, across 23 U.S ...