Cygnus


Also found in: Dictionary, Thesaurus, Acronyms, Wikipedia.

Cygnus

(sĭg`nəs) [Lat.,=the swan], northern constellationconstellation,
in common usage, group of stars that appear to form a configuration in the sky; properly speaking, a constellation is a definite region of the sky in which the configuration of stars is contained.
..... Click the link for more information.
 located SE of Draco and NW of Pegasus. It was depicted as a bird by most ancient cultures. It is sometimes called the Northern Cross because five of its brightest stars form a huge Latin cross. Its most famous star is DenebDeneb
, brightest star in the constellation Cygnus; Bayer designation Alpha Cygni; 1992 position R.A. 20h41.2m, Dec. +45°15'. It is a white supergiant of spectral class A2 Ia; its intrinsic brightness (about 60,000 times as luminous as the sun) is the
..... Click the link for more information.
, at the head of the cross, forming a large triangle with Vega in Lyra and Altair in Aquila. Cygnus reaches its highest point in the evening sky in September.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/

Cygnus

(sig -nŭs) (Swan) A large conspicuous constellation in the northern hemisphere, lying in the Milky Way. The five brightest stars – Alpha (α) (1st mag.), Gamma (γ), Epsilon (Ɛ), and Delta (δ) (2nd mag.), and Beta (β) (3rd mag.) – form the Northern Cross: α, γ, β comprise the long arm and ∊, γ, δ the transverse arm. Alpha is the extremely luminous supergiant Deneb and Beta the beautiful binary Albireo. There are several other noticeable binaries and some variables, including the Mira star Chi (χ) Cygni, the brightest dwarf nova SS Cygni, and the highly luminous unstable P Cygni. There is a large open cluster, M39 (NGC 7092), some complex emission and dark nebulosity, and the supernova remnant known as the Cygnus Loop, comprising several bright nebulae. The constellation also contains the star 61 Cygni, the powerful radio source Cygnus A, and the X-ray binaries Cygnus X-1 and Cygnus X-3. Cygnus X-1 and the object V404 Cygni are promising black-hole candidates. Abbrev.: Cyg; genitive form: Cygni; approx position: RA 20.5h, dec +40°; area: 804 sq deg. See also North America Nebula.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Cygnus

[′sig·nəs]
(astronomy)
A conspicuous northern summer constellation; the five major stars are arranged in the form of a cross, but the constellation is represented by a swan with spread wings flying southward; right ascension 21 hours, declination 40°N. Abbreviated Cyg. Also known as Northern Cross; Swan.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Today, astronomers are confident the Cygnus X-1 system contains a black hole, and with these latest studies they have remarkably precise values of its mass, spin, and distance from Earth.
OGA's 32nd licensing round is open, with Neptune seeking further acreage in the central North Sea around Seagull and the southern sector, near Cygnus.
Aside from Cygnus OB2, NASA also released (https://www.nasa.gov/mission_pages/chandra/images/index.html) new images of beautiful cosmic bodies captured by Chandra.
Once Cygnus departs the station, the spacecraft will begin a secondary mission to deploy CubeSats for two commercial customers.
Launched in 1996, Cygnus Design brings technology, marketing and design solutions to a wide range of fields, including medical/pharmaceutical, biotech, entertainment, education and finance.
In the case of Cygnus X-1, this matter comes from the star that closely orbits the black hole.
The first gas from Bravo was exported 7km SE to Cygnus Alpha, which itself has been at a plateau of 250 million cubic feet per day since 13th December 2016.
Upon arrival at the orbiting laboratory, Cygnus delivered approximately 7,600 pounds (3,450 kilograms) of cargo and science experiments to the astronauts.
the Cygnus Star Cloud can break up into individual 7th-magnitude and
CiThe launch of the US automated cargo spacecraft Cygnus on the United Launch Alliance Atlas V rocket took place earlier in the day.