[permalink] [id link]
Upsilon Andromedae was both the first multiple-planet planetary system to be discovered around a main sequence star, and the first multiple-planet system known in a multiple star system.
from
Wikipedia
Some Related Sentences
Upsilon and Andromedae
In 1999, Upsilon Andromedae became the first main-sequence star known to have multiple planets.
Gamma Trianguli represented the General itself, while 14 Trianguli and Upsilon Andromedae represented his standard-bearers.
*** Upsilon Andromedae ( with Whipple Observatory )
Upsilon Andromedae ( υ Andromedae, υ And ) is a binary star located approximately 44 light-years away from Earth in the constellation Andromeda.
The primary star ( Upsilon Andromedae A ) is a yellow-white dwarf star that is somewhat younger than the Sun.
The second star in the system ( Upsilon Andromedae B ) is a red dwarf located in a wide orbit.
Upsilon Andromedae A was ranked 21st in the list of top 100 target stars for the NASA Terrestrial Planet Finder mission, which has, however, been reported to have been cancelled as of 2011.
Upsilon Andromedae is located fairly close to the Solar System: the parallax of Upsilon Andromedae A was measured by the Hipparcos astrometry satellite as 74. 12 milliarcseconds, corresponding to a distance of 13. 49 parsecs ( 44 light years ).
Upsilon Andromedae A has an apparent magnitude of + 4. 09, making it visible to the naked eye even under moderately light-polluted skies, about 10 degrees east of the Andromeda Galaxy.
The dimmer star Upsilon Andromedae B is only visible with a telescope.
Upsilon Andromedae A is a yellow-white dwarf of spectral type F8V, similar to the Sun, but younger, more massive, and more luminous.
Upsilon Andromedae B is a red dwarf of spectral type M4. 5V located at a distance ( in the plane of the sky ) of 750 AU from the primary star.
The true separation between the two stars is unknown because the displacement along the line of sight between us and the Upsilon Andromedae stars is unknown, so this value is a minimum separation.
The Washington Double Star Catalog lists two optical components ; however, these do not share the system's proper motion and only appear close to Upsilon Andromedae because they happen to lie near the same line of sight.
The innermost planet of the Upsilon Andromedae system was discovered in 1996 and announced in January 1997, together with the planet of Tau Boötis and the innermost planet of 55 Cancri.
The planet, designated Upsilon Andromedae b, was discovered by measuring changes in the star's radial velocity induced by the planet's gravity.
Artist's conception of the planets of Upsilon Andromedae.
The two outer planets were designated Upsilon Andromedae c and Upsilon Andromedae d in order of increasing distance from the star.
Upsilon and was
The particle's initial name was the greek letter Upsilon ().
He attended the University of Texas at Austin where he was a brother of Delta Upsilon International Fraternity.
At Yale, he was a member of the Linonian Society, a literary and debating society ; Skull and Bones, the secret society co-founded by his father in 1832 ; and the Beta chapter of the Psi Upsilon fraternity.
At Rutgers, Kilmer was associate editor of the Targum, the campus newspaper, and a member of the Delta Upsilon fraternity.
Jess graduated from Hamilton College in 2000 where he, like his father, was a member of the Delta Upsilon Fraternity.
On March 16, 2007, the Upsilon Chapter at the University of Florida was officially recognized by the Beta Upsilon Chi ( BYX ) national board.
However, a fourth planet ( Upsilon Andromedae e ) was discovered in 2010.
The first main-sequence exoplanetary system found was Upsilon Andromedae in April 1999.
There, he was a member of the Delta Upsilon fraternity.
He was a member of the Delta Upsilon Fraternity.
While at Harvard he joined the Delta Upsilon International fraternity and played on the baseball team, but was blackballed from the Porcellian Club.
He graduated from the University of Texas School of Law in 1942 where he was a member of the Upsilon Chapter of Sigma Nu fraternity and the Texas Cowboys.
While at UCLA, Ashe was initiated as a member of the Upsilon chapter of Kappa Alpha Psi fraternity.
Playing at Yale University, where he was a divinity student, and a member of the Psi Upsilon fraternity and the secret Skull and Bones society, he was an end on the first All-America team, selected in 1889.
After the chapter was nationally chartered in 1969 as an Upsilon Delta chapter and subsequently was shut down by nationals and by Simpson college, KOY returned to campus in 1979.
Vandenberg attended public schools there and studied law at the University of Michigan ( 1900 – 1901 ), where he was a member of Delta Upsilon.
Upsilon and both
Graham was a member of Sigma Alpha Epsilon ( Florida Upsilon chapter ) and was both a fraternity brother and roommate of the late Senator George A. Smathers whom he had been close to since attending Miami High School with Smathers.
" The Hall " sits fronted by York Street and surrounded by the Yale Daily News Briton Hadden Memorial building, the Yale Drama School and theatre ( both gifts from E. Harkness ), and the former homes of the Fence Club ( or Psi Upsilon, 224 York Street ), DKE ( 232 York Street ) and Zeta Psi ( 212 York Street ).
* Märtha Sofia Lovisa Dagmar Thyra ( Alumna Initiate, Upsilon ) – Known formally as Princess Märtha of Sweden, she was both a princess of Sweden and the Crown Princess of Norway.
President Marcos greeted him cordially addressing him as “ brod ” since they both belonged to the Upsilon Sigma Phi fraternity of UP.
Upsilon and first
Artists conception of Upsilon Andromedae A, the first discovered extrasolar main-sequence planetary system, showing 2 of its 4 known planets
Upsilon Pi Epsilon ( ΥΠΕ ): International Honor Society for the Computing and Information Disciplines, is the first and only existing one of its kind.
The Upsilon Gamma chapter of Alpha Phi Alpha Fraternity, Incorporated is the first historically black fraternity to be chartered on the University of Richmond campus.
The first fraternity membership manual, the early predecessor of The Cornerstone, the Manual of Delta Upsilon, was published in 1916.
Delta Upsilon was one of the first fraternaties to call for dry rush on college campuses.
The initiation was also significant as it was the first time in more than a century that Delta Upsilon established a chapter at a school where no previous fraternities and sororities existed.
* The shield of Arms: Delta Upsilon bears for arms or a balanced scale proper on a chief azure seven mullets of the first, four and three.
" This version remained with minor changes until around 1923, when the first printed example of the current version was published in that year's edition of the Manual of Delta Upsilon.
Completed in 1971, the Delta Upsilon International Fraternity Headquarters was the first Headquarters to be constructed on Founders Road, currently seven other fraternity and sorority headquarters are located within a block on Founders Road and there are more than 32 headquarters in Indianapolis alone.
Delta Upsilon was one of the first fraternities to offer a Regional Leadership Seminar ( RLS ).
The first fraternity manual, The Manual of Delta Upsilon was printed from 1916 to 1962, spanning sixteen editions.
The first songbook was printed in 1866, as Songs of Delta Upsilon, by the chapter from The University of Rochester.
The fraternity was officially known as the " Secret Order of Chi Phi " and the first chapter would be called the Upsilon chapter.
0.181 seconds.