Cygnus


Also found in: Dictionary, Thesaurus, Medical, 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.

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.

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.
References in periodicals archive ?
We are excited to work with Compaq to extend the availability of Cygnus tools and support for Linux through Compaq's market leading programs," said Duke Walton, director of Worldwide Channel Sales at Cygnus.
Rather than look in visible light, Kinney and her colleagues examined Cygnus A in the ultraviolet, using Hubble's faint-object spectrograph.
A more panoramic X-ray view of the Cygnus Loop, taken by ROSAT and analyzed by Pisarski and Denis E Cioffi at NASA headquarters in Washington, D.
Infrared Telescope atop Mauna Kea in Hawaii, Charles and his colleagues assert that the companion star in Cygnus X-3 has a mass about 10 times that of the sun.
We believe buyers will download these videos onto their personal mobile devices and take them directly to tradeshows or to dealers," says Cygnus Business Media's Group Publisher Dave Davel, who heads the company's Construction Equipment Media Group and has been covering the heavy construction market for more than two decades.
Cygnus will submit for a stockholder vote two proposals: to approve the Acquisition and to approve a plan of dissolution.
Also, Cygnus will cease publication of four regional printing titles with September issues.
According to Djorgovski, this all but proves that the core of Cygnus A harbors a quasar.
We can engage an audience through an expanded platform using digital technologies that keep our customers connected with their audience and keep our shows relevant before, during and after an event," says Jeff Price, president of Cygnus Expositions.
In addition, Sankyo US acknowledged that it had not paid invoices owed to Cygnus of over $6 million and informed Cygnus that it had no intention of remitting payment.
Each cone, part of an experiment called CYGNUS, contains a plastic sheet that scintillates when a particle strikes it; a phototube at the top of each cone senses the faint burst of light.
Paul has a great grasp of the role each media plays within its respective market and the ability to utilize their strengths to build revenue developing marketing programs for our customers," says Cygnus Business Media co-CEO Tony O'Brien.