Arcturus

Definitions

  • WordNet 3.6
    • n Arcturus the 4th brightest star and the brightest star in the constellation Bootes; 36 light-years from Earth
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Webster's Revised Unabridged Dictionary
    • n Arcturus (Anat) A fixed star of the first magnitude in the constellation Boötes.Arcturus has sometimes been incorrectly used as the name of the constellation, or even of Ursa Major. "Canst thou guide Arcturus with his sons [Rev. Ver.: “the Bear with her train”]."
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Century Dictionary and Cyclopedia
    • n Arcturus A yellow star in the northern hemisphere, the fourth in order of brightness in the entire heavens. It is situated between the thighs of Boötes, behind the Great Bear, and is easily found by following out the curve of the bear's tail. In the southern hemisphere it may be recognized by its forming a nearly equilateral triangle with Spica and Denebola. It is called by astronomers α (alpha) Bootœ. See cut under Boo˙tes.
    • n Arcturus A genus of isopod crustaceans, of the family Idoteidœ or Arcturidœ.
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Chambers's Twentieth Century Dictionary
    • n Arcturus ärk-tū′rus the Bear-ward, a yellow star in the northern hemisphere, fourth in order of brightness in the entire heavens.
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Etymology

Webster's Revised Unabridged Dictionary
L. Arcturus, Gr. bearward, equiv. to ; bear + ward, guard. See Arctic
Chambers's Twentieth Century Dictionary
Gr. arktourosarktos, a bear, and ouros, ward, guard (from its situation at the tail of the bear).

Usage

In literature:

It has been computed that Arcturus is in mass 500,000 times as large as our sun!
"To Mars via The Moon" by Mark Wicks
Capella and Arcturus belong to the second, or solar type of stars, which is about one-sixth less numerously represented than the first.
"A Popular History of Astronomy During the Nineteenth Century" by Agnes M. (Agnes Mary) Clerke
Arcturus is, so far as we know at present, the swiftest, brightest, and largest of all.
"The Beauties of Nature" by Sir John Lubbock
Vega is about 30 light years distant from us, Capella about 32, and Arcturus about 100.
"Astronomy of To-day" by Cecil G. Dolmage
The distance of Arcturus is too great to measure even now.
"Pioneers of Science" by Oliver Lodge
Its leading star alpha, Arcturus, is the brightest in the northern hemisphere.
"Pleasures of the telescope" by Garrett Serviss
The very bright star not far from it is another first-class star called Arcturus.
"The Children's Book of Stars" by G.E. Mitton
Arcturus and Vega shone softly in that ocean of stars.
"Rosinante to the Road Again" by John Dos Passos
This particular animal was none other than Arcturus, Mr. Jefferson's favorite saddler.
"The Magnificent Adventure" by Emerson Hough
That is like to be all we shall ever have to do with Arcturus or Aldebaran.
"The Works of Robert Louis Stevenson" by Robert Louis Stevenson
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In poetry:

Arcturus! from the abysses vast
That hush the Voices of thy strife,
Has heard a whisper unto Life,
Assuring that she rest at last?
"The Testimony of the Suns" by George Sterling
Remote they burn whose dread array
Glows from the dark a dust of fire;
Unheard the storm of Rigel's ire,
A grain of light Arcturus' day.
"The Testimony of the Suns" by George Sterling
Lo! peaceless, ere the veiling day
Expand where now Arcturus shines,
I cry to night's ascendant Signs
The timeless questions of the clay:
"The Testimony of the Suns" by George Sterling
Wards of Whose realm shall ye avail
To loose the tentacles of force
That drag Arcturus from his course,
And rend the weight of Procyon's mail?
"The Testimony of the Suns" by George Sterling
Dost dream to hold the ghostly heights
That soar beyond Mutation's reign,
Or sway the tides of Time and Pain,
Lord of the war Arcturus lights?
"The Testimony of the Suns" by George Sterling
And soon we'll hear the far wild-geese
Honk in frost-bitten heavens under
Arcturus; when my walks must cease,
And by the fireside's log-heaped peace
I'll sit and nod and ponder.--
"One Day And Another: A Lyrical Eclogue – Part III" by Madison Julius Cawein

In news:

Follow the arc to Arcturus .
Every Halloween – and a few days before and after – the brilliant star Arcturus sets at the same time and on the same spot on the horizon as the summer sun.
Yesterday we talked about learning to 'follow the arc' to the star Arcturus in the constellation Bootes.
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In science:

The Arcturus stream has been identified in recent studies (Klement et al. 2008) as a significant over density in phase space.
Chemical compositions of stars in two stellar streams from the Galactic thick disk
Williams et al. (2009) examined a data set of 16,000 giants from the RAVE survey and showed pronounced over-density of stars at velocities overlapping with the Arcturus stream in the solar circle.
Chemical compositions of stars in two stellar streams from the Galactic thick disk
The metallicity distribution of the streams is shown in Figure 8 for the Arcturus and AF06 streams.
Chemical compositions of stars in two stellar streams from the Galactic thick disk
Next, we discuss these abundances for the Arcturus and AF06 streams in the light of the proposed scenarios for the origin of stellar streams.
Chemical compositions of stars in two stellar streams from the Galactic thick disk
Results shown in Figure 5, 6 and 7 indicate existence of no such a group among Arcturus stream sample, however, for the stream AF06, we find a hint of clustering of stars at [Fe/H] = −0.4.
Chemical compositions of stars in two stellar streams from the Galactic thick disk
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