R Monocerotis


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R Monocerotis

(mŏ-noss-ĕ-roh -tiss) See Hubble's variable nebula.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

R Monocerotis

[′är ‚män·ə′ser·əd·əs]
(astronomy)
An irregular variable star at the tip of the small fan-shaped emission nebula NGC 2261.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Another degree further north-east is the well-known and very special variable star R Monocerotis accompanies a fan-shaped nebula.
Mythical monoceros--unicorn of the skies
The stellar spot at the point of the fan has long been known by the variable-star designation R Monocerotis. However, the starlike point we see is actually a bright circumstellar shell of gas and dust hiding a young binary star.
The flight of the Unicorn: Monoceros's dim stars are offset by other fine sights
Also known as Hubble's Variable Nebula, NGC 2261 fans outward from R Monocerotis, a dust-shrouded binary star estimated to be 2,500 light- years distant and only 300,000 years old - a mere infant (though a mighty one) in stellar terms.
Hubble Images Show Starbirth and Death
Embedded in the fan's bright tip is the hazy variable star R Monocerotis. Dark dust clouds moving near the star cast their shadows on the nebula, changing its appearance.
The familiar fan-shaped reflection nebula is a hollow cone resulting from hot gas blowing out perpendicular to R Monocerotis's disk.
A closer look at Hubble's Variable Nebula
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