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Topic: Carina Nebula

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	Colour Photographs from the Anglo-Australian Observatory Telescopes
		38 NGC 3576 and 3603, nebulae in Carina
		39 The loops of the NGC 3576 nebula
		75 The NGC 6188 nebula and NGC 6193
	www.phys.unsw.edu.au /~mgb/astroimages.html (566 words)

	Eta Carinae Nebula - Wikipedia, the free encyclopedia
		The Eta Carinae Nebula (also known as the Keyhole Nebula, the Great Nebula in Carina, the Carina Nebula, or NGC 3372) is a large bright nebula which surrounds the star Eta Carinae, one of the most massive and luminous stars in the galaxy.
		This small nebula is known as the Homunculus Nebula (from the Latin meaning Little Man), and is believed to have been ejected in an enormous outburst in 1841 which briefly made Eta Carinae the second-brightest star in the sky.
		A portion of the Eta Carina Nebula is known as the Keyhole Nebula, a name given to it by John Herschel in the 19th century.
	en.wikipedia.org /wiki/Eta_Carinae_Nebula (320 words)

	eSky: Keyhole Nebula (Site not responding. Last check: 2007-11-03)
		The Nebula consists of a huge cloud of ionised hydrogen surrounding the extraordinary star Eta Carinae.
		Eta Carinae itself is a binary system, consisting of two massive stars in a mutual embrace, each casting off spherical shrouds of matter to form a peculiar dumb-bell shape.
		Surrounding the hourglass of Eta Carinae is an extensive cloud of ionised gas, within which several star clusters are in the process of forming.
	www.glyphweb.com /esky/nebulae/keyhole.html (204 words)

	Hubble’s 17th anniversary — extreme star birth in the Carina Nebula
		The bizarre landscape of the nebula is sculpted by the action of outflowing winds and scorching ultraviolet radiation from the monster stars that inhabit this inferno.
		Eta Carinae is in the final stages of its brief eruptive lifespan, as shown by two billowing lobes of gas and dust that presage its upcoming explosion as a titanic supernova.
		This immense nebula is an estimated 7,500 light-years away in the southern constellation Carina, the Keel of the old southern constellation Argo Navis, the ship of Jason and the Argonauts from Greek mythology.
	www.spacetelescope.org /news/html/heic0707.html (690 words)

	Eta Carinae Nebula (NGC 3372)
		A spectacular diffuse nebula in the constellation Carina – one of the largest and brightest in the sky; also called simply the Carina Nebula.
		In addition to Eta Carinae itself, it contains several stars that are among the hottest and most massive known, each about 10 times as hot, and 100 times as massive, as our Sun.
		The Keyhole Nebula (NGC 3324) is a dark cloud, whose round portion is some 7 light-years across, that is silhouetted against the brighter background near Eta Carinae.
	www.daviddarling.info /encyclopedia/E/Eta_Carinae_Nebula.html (174 words)

	Hubble Heritage Archive - 2000
		The nebula is expanding at about 40 km per sec (25 miles per sec), and over the course of a few years, follow-up observations should reveal a slight increase in the nebula's size.
		The close passage of that star is both destroying the nebula and lighting it; the reflected starlight off the nebula is what classifies it as a "reflection nebula." This nebula is named after its discoverer, American astronomer E. Barnard, who found it in 1890 with the Lick Observatory's 36-inch telescope.
		In most cases, the nebulae that surround star clusters are parents to those clusters; the Pleiades is a different case, where the nebula is an independent cloud that is drifting through the cluster at a relative speed of 11 km per sec (6.8 miles per sec).
	filer.case.edu /~sjr16/advanced/archive_hst_2000.html (3140 words)

	The Carina Nebula
		In fact, the Carina Nebula is the region nearest to the Sun where there are examples of the most massive stars known (spectral type O3), with surface temperatures 10 times and masses 100 times those of the Sun.
		The stellar content of the Carina Nebula also includes three Wolf-Rayet stars of the nitrogen sequence (WN), immediate evolutionary descendents of the O3 stars with very large rates of mass ejection, and the famous explosive variable star Eta Carinae.
		The images of the Carina Nebula suggest that it is in a very dynamic state, and that is indeed the case.
	www.stsci.edu /~jmaiz/carina.html (1583 words)

	Images Of The Day - The Carina Nebula - RedOrbit (Site not responding. Last check: 2007-11-03)
		The fantasy-like landscape of the nebula is sculpted by the action of outflowing winds and scorching ultraviolet radiation from the monster stars that inhabit this inferno.
		Eta Carinae is in the final stages of its brief and eruptive lifespan, as evidenced by two billowing lobes of gas and dust that presage its upcoming explosion as a titanic supernova.
		The island-like clumps of dark clouds scattered across the nebula are nodules of dust and gas that are resisting being eaten away by photoionization.
	www.redorbit.com /images/images-of-the-day/img/14268/the_carina_nebula/index.html (551 words)

	Eta Carinae 2
		Superimposed on the bright Carina Nebula is the dark Keyhole Nebula (NGC 3324).
		Assuming that Eta Carinae is a binary, its x-ray output should vary with the orbital period of a smaller star revolving around a common center of mass with a larger star in a repeating cycle.
		While Eta Carinae A is too cool to generate X-rays, it continuously blasts a flow of gas into space in a stellar wind at about 300 miles per second that collides with a similiar wind from Star B somewhere between the two stars to generate the observed X-rays.
	www.solstation.com /x-objects/eta-car.htm (2284 words)

	[No title]
		The nebula in Orion is 1,500 light years from Earth and six light years or 35 trillion miles across.
		The Carina Nebula has a diameter of about 200 light years, and the dust pillars are up to 10 light years, or 50 trillion miles, in length, said Smith.
		The Carina Nebula is about 100 times more luminous than the much closer Orion Nebula and may contain as many as 100,000 young stars, most of which are faint, low mass stars like the sun.
	www.lycos.com /info/nebula--orion-nebula.html (567 words)

	Carina mass nebula color page
		A polarized photo of the Crab nebula shows rectangles, and, faintly, traces of leading edges which are both curved and elliptically circular meaning seen at side slant not on full cross sectionals.
		These Carina color views are companion to the Carina fl and white page in which the Carina pullmotor is identified and detailed as much as possibe.
		Superstar Eta Carina is the hot spot at the lower left of vesuvius.
	www.cosmicastronomy.com /carina-1.htm (1632 words)

	Carina Nebula dust pillars harbor embedded stars, says research team
		Located in the southern Milky Way galaxy, the Carina Nebula is visible to the human eye and contains the variable star Eta Carina, which puts out more energy than 1 million suns and which is expected to explode into a supernova in the coming millennia.
		The Carina Nebula has a diameter of about 200 light years, and the dust pillars are up to 10 light years, or 50 trillion miles, in length, said Smith.
		The Carina Nebula is about 100 times more luminous than the much closer Orion Nebula and may contain as many as 100,000 young stars, most of which are faint, low mass stars like the sun.
	www.eurekalert.org /pub_releases/2005-05/uoca-cnd052705.php (752 words)

	Brad Moore's Astrophotography - Southern Hemisphere Celestial Marvels. Galaxies, Nebulae, Star Clusters & ...
		This faint deep southern nebula belongs to the Eta Carinae Nebula region and is known as the Gabriela Mistral Nebula.
		This diffuse nebula is located in the deep southern constellation of Carina and is one of the largest in the sky covering an area 4 times greater than the Orion Nebula.
		The Tarantula Nebula bright core is elusive to capture as it's often over exposed, advance layering techniques and a Hydrogen Alpha filter was used to preserve and bring out the bright core.
	www.southern-astro.com.au (570 words)

	Eta Carinae - Wikipedia, the free encyclopedia
		The term "Eta Carinae Nebula" should be deprecated because sometimes it means the Homunculus, and sometimes NGC 3372.
		When Eta Carinae was first catalogued in 1677 by Edmond Halley, it was of the 4th magnitude, but by 1730, observers noticed it had brightened considerably, and was at that point one of the brightest stars in Carina.
		After 1843 Eta Carinae faded away, and between about 1900 and 1940 it was only of the 8th magnitude: invisible to the naked eye (see the light curve).
	en.wikipedia.org /wiki/Eta_Carinae (1157 words)

	Selden's Billboard Meshes for Celestia (Site not responding. Last check: 2007-11-03)
		#Horsehead Nebula in Orion # # the "billboard" picture used with this definition is derived from #a photograph of the Horsehead Nebula Region taken by Walter Koprolin, # Austria, Europe: http://www.astro.univie.ac.at/~koprolin/ # Nebula "Barnard 33" { Mesh "b33.3ds" Axis [ -0.641856 0.38352 -0.664029 ] Angle 132.636 Distance 1600 RA 5.69 Dec -2.35 Radius 40.3 }
		The "Hoag's Object", "Carina" and "NGC 4622" images used with the billboards above were derived from pictures published on the Web at http://hubblesite.org/newscenter/archive/2000/06/ (Carina Nebula), http://heritage.stsci.edu/2002/21/table.html (Hoag's Object), and http://hubblesite.org/newscenter/archive/2002/03/image/a (NGC 4622).
		The image of the Horsehead Nebula Region was taken by Walter Koprolin, Austria, Europe: http://www.astro.univie.ac.at/~koprolin/.
	lepp.cornell.edu /~seb/celestia/billboard.html (4788 words)

	ESA Science & Technology: Hubble's 17th anniversary - extreme star birth in the Carina Nebula [heic0707]
		Mosaic of the Carina Nebula, from observations with the HST Advanced Camera for Surveys and the Cerro Tololo Inter-American Observatory in Chile.
		Eta Carinae is in the final stages of its brief eruptive lifespan, as shown by two billowing lobes of gas and dust that foretell its upcoming explosion as a titanic supernova.
		The island-like clumps of dark clouds scattered across the nebula are nodules of dust and gas that have so far resisted being eaten away by photoionisation by the stellar radiation.
	sci.esa.int /jump.cfm?oid=40913 (723 words)

	AHN \| NASA Releases Image Of Carina Nebula On Hubble Telescope's Birthday \| April 27, 2007
		The image offers a 50 light-year-wide view of the Carina Nebula; a massive star-forming region located billions of miles from Earth in the constellation of Carina.
		The Carina Nebula contains multiple luminous stars that are estimated to be at least 50 to 100 times the mass of our Sun.
		One of the most massive and luminous stars in the nebula is Eta Carinae, which could be seen at far left in the image from Hubble.
	www.allheadlinenews.com /articles/7007143194 (271 words)

	Spaceflight Now \| Breaking News \| Stellar cocoons found in harsh environment
		The proplyds detected in Carina range in size from 2,000-10,000 Astronomical Units, though smaller objects beyond the resolution limit of the Blanco telescope may certainly exist; an Astronomical Unit is equivalent to 150 million kilometers (93 million miles).
		In addition, while some Carina proplyds closely resemble those in Orion, others in Carina have relatively large, spherical heads and thin tails, and at least one appears to have two tails, which actually may turn out to be bipolar jets once sharper images are obtained.
		The discovery of so many proplyds in the Carina Nebula was unexpected because the conditions are much more extreme there than in Orion, meaning proplyds should evaporate faster as they are baked in the ultraviolet radiation from such hot, massive stars.
	spaceflightnow.com /news/n0301/15cocoon (1018 words)

	ESA - Space Science - Spectacular star birth pictures on Hubble’s 17th birthday
		Carina is an immense nebula situated at an estimated 7 500 light years away in the southern constellation Carina, at the keel of the ship Argo Navis.
		The landscape of the nebula is sculpted by the action of outflowing winds and ultraviolet radiation from the monster stars that inhabit it.
		The strong stellar winds and ultraviolet radiation within the cavity of hot gas are compressing the surrounding walls of cold hydrogen, triggering the birth of a new generation of stars.
	www.esa.int /esaSC/SEMBZBMJC0F_index_0.html (576 words)

	The Carina nebula, NGC 3372 (Site not responding. Last check: 2007-11-03)
		Although no bright naked-eye stars are associated with the Carina nebula now, 150 years ago there blazed forth here one of the most unusual and peculiar stars ever seen.
		The star is known as Eta Carinae and for a few months in 1843 it was the second or third brightest star in the sky.
		The whole region around Eta Carinae is rich in hot stars of which Eta is an extreme example and it is their combined radiation that produces the spectacular Carina nebula that dominates this picture.
	www.aao.gov.au /AAO/images/captions/uks006a.html (162 words)

	Light and Shadow in the Carina Nebula
		Previously unseen details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the 'Keyhole Nebula, ' obtained with the Hubble Space Telescope.
		The picture is dominated by a large, approximately circular feature, which is part of the Keyhole Nebula, named in the 19th century by Sir John Herschel.
		The Carina Nebula also contains several other stars that are among the hottest and most massive known, each about 10 times as hot, and 100 times as massive, as our Sun.
	www.spacetelescope.org /images/html/opo0006a.html (143 words)

	ESA - Space Science - Home - Spirograph Nebula (IC 418)
		The star at the centre of IC 418 was a red giant a few thousand years ago, but then ejected its outer layers into space to form the nebula, which has now expanded to a diameter of about 0.2 light-years.
		The stellar remnant at the centre is the hot core of the red giant, from which ultraviolet radiation floods out into the surrounding gas, causing it to fluoresce.
		Over the next several thousand years, the nebula will gradually disperse into space, and then the star will cool and fade away for millions of years as a white dwarf.
	www.esa.int /esaSC/SEM0ETYV1SD_index_2.html (255 words)

	APOD: July 19, 1999 - NGC 3372: The Great Nebula in Carina (Site not responding. Last check: 2007-11-03)
		Great Nebula in Carina, is home to massive stars and changing nebula.
		Keyhole Nebula, visible near the center, houses several of the most massive stars known and has also changed its appearance.
		Carina Nebula is about 7000 light-years away in the constellation of
	antwrp.gsfc.nasa.gov /apod/ap990719.html (140 words)

	Constellation Carina
		The brightest stars of Carina are alpha Car, Canopus, a yellow-white supergiant of -0.7 mag (about 300 lightyears distant), beta Car, Miaplacidus, a blue-white star of 1.7 mag, gamma Car,Almuhlif with 1.8 mag and epsilon Car, She (sometimes called Avior), which is a yellow giant with a brightness of 1.9 mag.
		Eta Car with the surrounding the Eta Carinae Nebula is one of the most peculiar objects in the sky.
		Because it is embedded in the Eta Carinae Nebula it gives a most glorious view for the observer (with a large telescope).
	www.seds.org /Maps/Stars_en/Fig/carina.html (638 words)

	The Carina Works Story
		"Carina Works" is named after the spectacular Carina Nebula in our solar system where celestial stars are born, a beautiful reminder of the miracle of creation and the gift that mankind inherited in his ability to bring beauty into our everyday life.
		Prior to the formation of Carina Works, Foster had worked in the chemical coatings industry for thiry years and developed several solvent based glazing systems which were used extensively in the USA and Europe for refinishing ceramic tile.
		The proven Carina Works flooring glaze is a superior glaze and is a key to the sucess of the flooring line.
	www.carinaworks.com /aboutusbio.html (505 words)

	Massive Stars Research Group
		The bright Lagoon Nebula is home to a diverse array of astronomical objects as a bright open cluster and several energetic star-forming regions.
		This Nebula was observed with the Curtis-Schmidt Camera using a 2048x2048 CCD at CTIO by G. Folatelli, N. Morrell and R. Barbá.
		The mosaic picture shows that ultraviolet radiation and high-speed material unleashed by the stars in the cluster, called R136 [the large blue blob left of center], are weaving a tapestry of creation and destruction, triggering the collapse of looming gas and dust clouds and forming pillar-like structures that are incubators for nascent stars.
	lilen.fcaglp.unlp.edu.ar (677 words)

	Blazers, short energetic rays from exploded star nebulas
		This nebula has several bottles in both the upper and lower halves, each bottle is in a different planar alignment relative to a central axis and no two bottles fall along a single ecliptic axis.
		In the Rungs nebula, though indistinct at extreme range of uncertainty, blazers are possibly firing out from the hem of the bright star area at center.
		For instance the striking criss cross rays of the Egg nebula are actually blazer rays (irregular) revealing narrow paths excited by invisible high energy lazer rays.
	www.cosmicastronomy.com /blazers.htm (1442 words)

	NGC 3372
		Diffuse Nebula NGC 3372 (= Lacaille III.6 = Dunlop 309), an emission nebula, in Carina
		The star forming nebula NGC 3372 has produced the very conspicuous peculiar star Eta Carinae, which is among the most massive and luminous stars in our Milky Way, and perhaps in the universe.
		The Eta Carinae Nebula was discovered by Abbe Lacaille during his 2-year journey to the Cape of Good Hope in 1751-52.
	www.seds.org /MESSIER/xtra/ngc/n3372.html (336 words)

	The ICSTARS Astronomy Education Feature - Eta Carinae
		Eta Carinae's most recent outburst in 1841 expelled the gas that creates the spectacular nebula (sometimes called the Homunculus Nebula) that we see today.
		Eta Carinae has a mass of approximately 150 times that of the sun, and is about 4 million times brighter than our local star, making it one of the most massive and most luminous stars known.
		In Eta Carinae, however, high velocity material is spraying out in the same plane as the hypothetical disk, which is supposed to be channeling the flow.
	www.icstars.com /HTML/Etacarina/Etacarinae.html (498 words)

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