Carina

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Carina

(kərē`nə) [Lat.,=the keel], southern 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.
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, representing the keel of the ancient constellation Argo Navis, or Ship of the Argonauts. Carina contains CanopusCanopus,
in astronomy, 2d brightest star in the sky, located in the constellation Carina, which is part of the ancient constellation Argo Navis; Bayer designation α Carinae; 1992 position R.A. 6h23.8m, Dec. −52°41'.
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, the second brightest star in the sky. It also contains the False Cross, a combination of four stars very similar to the Southern Cross (see CruxCrux
[Lat.,=cross], small but brilliant southern constellation whose four most prominent members form a Latin cross, the famous Southern Cross. The long arm of the cross, terminating in the brightest member, Acrux (Alpha Crucis), points almost directly at the south celestial
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); however, the long axis of the False Cross does not point toward the south celestial pole. In the 1840s a nova associated with η Carinae, a binary star consisting of a massive star with at least 90 times the mass of the sun (and perhaps more than 120 times the mass) and a companion with about 30 times the sun's mass, was observed in Carina. The nova made η Carinae the second brightest star in the sky for a time, and produced the Homunculus Nebula. The star also lies within the much larger Eta Carinae Nebula, one of the largest diffuse nebulae. Carina reaches its highest point in the evening sky in March.

Carina

(kă-ree -nă, -rÿ ) (Keel) A constellation in the southern hemisphere near Crux. It was once part of the constellation Argo. The brightest stars are the bright white giant Canopus (α) and some 1st-and 2nd-magnitude stars. The irregular variable star Eta (η) Carinae is associated with extensive nebulosity (see Eta Carinae; Eta Carinae Nebula). The area also contains two open clusters: the 2nd-magnitude IC 2602, centered on Theta (θ) Carinae, and the brilliant NGC 3532, located just west of Eta Carinae; and the large globular cluster NGC 2808. Abbrev.: Car; genitive form: Carinae; approx. position: RA 9h, dec –60°; area: 494 sq deg.

Carina

 

(in birds, keel), a longitudinal process of the sternum that serves for attachment of the well-developed pectoral muscles in a number of vertebrates.

The presence of the carina is connected with the character of movement of the anterior extremities: a carina is present in some rooting animals (moles) and is especially well developed in flying animals (the extinct flying lizards, or pterosaurs; birds; bats). In birds, the degree of development and particular features of the shape of the keel are associated with the type of flight. Carinatae, which fly well (for example, hummingbirds and martlets), have an especially large keel. A keel is also present in birds that are incapable of flight but swim by means of their wings (for example, penguins). In flightless birds (ostriches, certain water rails, and parrots), the keel is absent or very poorly developed. In some swans and cranes the keel is hollow and encloses part of the convoluted trachea, which acts as a resonator.

carina

[kə′rī·nə]
(biology)
A ridge or a keel-shaped anatomical structure.
(vertebrate zoology)

Carina

[kə′rī·nə]
(astronomy)
A constellation, right ascension 9 hours, declination 60°S. Abbreviated Car. Also known as Keel.
References in periodicals archive ?
Nomenclature and mensuration primarily follow Stahnke (1970), with the following exceptions: metasomal carinal terminology after Francke (1977), pedipalp carinae terminology after Acosta et al.
Pro-, meso-, and metaterga widest near mid-point, protergum longer and wider than meso- and metaterga combined, meso- and metaterga sub-equal in length; protergum with distinct marginal antero- and postero-transverse carinae, prescutum narrow weakly, developed medially, meso- and metaterga with distinct anterotransverse and posterotransverse carinae, each prescutum with an additional carina; terga sparsely populated with small sensilla; spiracular openings present in membranous pleural area below the acute anterolateral boundary of the mesotergum.
Black; mandibles, propodeal carinae and area between these, and T1 dark reddish brown; A1-A5 and legs including coxae light brownish yellow; A6-A10 medium dark brown.
Located about 7,500 light-years away in the southern constellation of Carina, Eta Carinae comprises two massive stars whose eccentric orbits bring them unusually close every 5.
Photographs taken of clouds around the explosive star Eta Carinae from the telescope in Cerro Paranal, Chile, provide astronomers with rare insights into the role of clouds at the beginning and evolution of the universe.
Some of the celestial objects classified as supernovae, it turns out, may in fact be examples of evolved, very massive stars, and Eta Carinae is singled out as a prime example of such imposters.
But Eta Carinae has given a clue that it could go off, says Chandra X-ray Observatory astrophysicist Peter Edmonds.
Eta Carinae would be like a giant can of 1950s hairspray.
Eta Carinae, a star in our own galaxy, might be poised to undergo the same type of explosion, researchers say.
Then Nicholas Cleobury conducted authoritative accounts of Charlotte Bray's Beneath the Dawn Horizon and Samuel Bordoli'sEta Carinae Nebula (both prize-winning student composers), brilliantly delivered after minimal rehearsal by the expert Birmingham Contemporary Music Group.
Highlighting the band is the Group 2-placed Salsa Brava, who gained the distinction of producing the first foal by Araafa this year, and the Listed-placed Carinae, a EUR210,000 Keeneland November purchase by Anthony Stroud in 2006.