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Cha 110913−773444
Cha 110913−773444 (sometimes abbreviated ''Cha 110913'') is an astronomical object surrounded by what appears to be a protoplanetary disk. It lies at a distance of 529 light-years from Earth. There is no consensus yet among astronomers whether to classify the object as a sub-brown dwarf (with planets) or a rogue planet (with moons). Cha 110913−773444 was discovered in 2004 by Kevin Luhman and others at Pennsylvania State University using the Spitzer Space Telescope and the Hubble Space Telescope, as well as two Earth-bound telescopes in Chile. See also * WISEA J120037.79-784508.3, a brown dwarf with a primordial disk * OTS 44, a rogue planet * SCR 1845-6357, a binary system with a faint red dwarf and a brown dwarf * PSO J318.5−22, a rogue planet * 2MASS J11151597+1937266, a relative nearby planetary-mass object with a disk * KPNO-Tau 12 KPNO-Tau 12 (also called 2MASS J0419012+280248) is a low-mass brown dwarf or free-floating planetary-mass object ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hubble Space Telescope
The Hubble Space Telescope (HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the Orbiting Solar Observatory, first space telescope, but it is one of the largest and most versatile, renowned as a vital research tool and as a public relations boon for astronomy. The Hubble Space Telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories program, Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft. Hubble features a mirror, and its five main instruments observe in the ultraviolet, visible spectrum, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of atmosphere of Earth, Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background lig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rogue Planets
A rogue planet, also termed a free-floating planet (FFP) or an isolated planetary-mass object (iPMO), is an interstellar object of planetary mass which is not gravitationally bound to any star or brown dwarf. Rogue planets may originate from planetary systems in which they are formed and later ejected, or they can also form on their own, outside a planetary system. The Milky Way alone may have billions to trillions of rogue planets, a range the upcoming Nancy Grace Roman Space Telescope is expected to refine. Some planetary-mass objects may have formed in a similar way to stars, and the International Astronomical Union has proposed that such objects be called sub-brown dwarfs. A possible example is Cha 110913−773444, which may either have been ejected and become a rogue planet or formed on its own to become a sub-brown dwarf. Terminology The two first discovery papers use the names isolated planetary-mass objects (iPMO) and free-floating planets (FFP). Most astronomical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
KPNO-Tau 12
KPNO-Tau 12 (also called 2MASS J0419012+280248) is a low-mass brown dwarf or free-floating planetary-mass object that is surrounded by a protoplanetary disk, actively accreting material from it. Discovery KPNO-Tau 12 was identified in 2003 in data from a survey of the Taurus Molecular Clouds taken with a telescope at the Kitt Peak National Observatory (KPNO) and 2MASS. The object was observed with the MMT Observatory/Blue Channel spectrometer and with Keck/LRIS. KPNO-Tau 12 showed a spectral type of M9 and also showed strong Hydrogen-alpha emission. At the time its mass was estimated to be around 0.02 (or 21 ), which would make it a brown dwarf. Since then several works found that it likely has a mass near or below the deuterium-burning limit, which makes this object a low-mass brown dwarf or planetary-mass object (e.g. 14.6 , 13.6 , 6-7 , 16.5 , , ). A few other free-floating planetary-mass objects are known in the Taurus Clouds. These include three other objects ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2MASS J11151597+1937266
2MASS J11151597+1937266 (also called 2MASS J1115+1937) is a young isolated planetary-mass object that is surrounded by a planetary disk. 2MASS J1115+1937 was discovered in 2017 in the LaTE-MoVeRS survey (Late-Type Extension to the Motion Verified Red Stars), which combined 2MASS, SDSS and WISE data to search for faint moving stars. The spectral fit showed that it is an L dwarf, with low gravity. A spectral type of L2γ was assigned for 2MASS J1115+1937. This work did not find a match with any known stellar associations and suggested it might have been ejected from such an association in the past. Infrared spectroscopy from the NASA Infrared Telescope Facility was published in 2018. This team found a spectral type of L2γ (±1) and an age of 5–45 Million years (Myr). The upper age limit is determined by the maximum age at which low-mass stars accrete material (see Peter Pan disk), but 2MASS J1115+1937 could be younger than this upper limit. Using this age range the team ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PSO J318
PSO may refer to: Orchestras * Pacific Symphony Orchestra * Peoria Symphony Orchestra *Pittsburgh Symphony Orchestra * Plano Symphony Orchestra * Portland Symphony Orchestra * Perth Symphony Orchestra Science and technology * Particle swarm optimization, a swarm intelligence optimization technique * Password Settings Object, used in Windows Active Directory environments * Phase-shift oscillator, an electronic circuit that generates sine waves * Protocol Support Organization, one of the three initial components of ICANN, later disbanded * PSO J318.5-22, a rogue planet discovered in 2013 Other uses * Pakistan State Oil * Patient safety organization * Paysite operator, the operator of a paysite, typically pornographic * Peace Support Operations, a military term used by NATO * Penalty shootout, a method of determining a winner in sports matches which would have otherwise been drawn or tied * '' Phantasy Star Online'', a series of online role-playing video games ** '' Phantasy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SCR 1845-6357
SCR, or scr, may refer to: Organizations * Sacred Congregation of Rites, a former Congregation of the Roman Curia * Senior common room, of a higher education institution * South Coast Repertory, theatre located in Costa Mesa, California * BBC Southern Counties Radio, a former radio service * Sport Club do Recife, a Brazilian soccer team * Success case replication, a methodology claiming to identify, verify, and multiply successful enterprises * Supreme Court Reports (Canada) * Supreme Court Reports (India) Science and technology * Satellite channel router * Screener (promotional), a movie piracy rip, a motion picture film transfer process identifier * Selective catalytic reduction, a technology for control of NOX emissions in furnace flue gas and internal combustion engine exhaust * Self-consistent renormalization, a theory for magnetic materials also used in high-temperature superconductivity * Semi-closed circuit rebreather, a type of self-contained breathing apparatus * Sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OTS 44
OTS 44 is a free-floating planetary-mass object or brown dwarf located at in the constellation Chamaeleon near the reflection nebula IC 2631. It is among the lowest-mass free-floating substellar objects, with approximately 11.5 times the mass of Jupiter, or approximately 1.1% that of the Sun. Its radius is estimated to be 3.2 or 3.6 times that of Jupiter. OTS 44 was discovered in 1998 by Oasa, Tamura, and Sugitani as a member of the star-forming region Chamaeleon I. Based upon infrared observations with the Spitzer Space Telescope and the Herschel Space Observatory, OTS 44 emits an excess of infrared radiation for an object of its type, suggesting it has a circumstellar disk of dust and particles of rock and ice. This disk (gas+dust) has a SED-fitted mass of at about 30 Earth masses. Observations with the SINFONI spectrograph at the Very Large Telescope show that the disk is accreting matter at the rate of approximately 10−11 of the mass of the Sun per year. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chile
Chile, officially the Republic of Chile, is a country in western South America. It is the southernmost country in the world and the closest to Antarctica, stretching along a narrow strip of land between the Andes, Andes Mountains and the Pacific Ocean. Chile had a population of 17.5 million as of the latest census in 2017 and has a territorial area of , sharing borders with Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage to the south. The country also controls several Pacific islands, including Juan Fernández Islands, Juan Fernández, Isla Salas y Gómez, Desventuradas Islands, Desventuradas, and Easter Island, and claims about of Antarctica as the Chilean Antarctic Territory. The capital and largest city of Chile is Santiago, and the national language is Spanish language, Spanish. Conquest of Chile, Spain conquered and colonized the region in the mid-16th century, replacing Incas in Central Chile, Inca rule; however, they Arauco War ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spitzer Space Telescope
The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope launched in 2003, that was deactivated when operations ended on 30 January 2020. Spitzer was the third space telescope dedicated to infrared astronomy, following IRAS (1983) and ISO (1995–1998). It was the first spacecraft to use an Earth-trailing orbit, later used by the Kepler planet-finder. The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments were no longer usable. However, the two shortest-wavelength modules of the IRAC camera continued to operate with the same sensitivity as before the helium was exhausted, and continued to be used into early 2020 in the Spitzer Warm Mission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
