Reflection Nebula
A reflection nebula is created when light from a star is scattered or reflected off a neighbouring dust cloud. The scattered light is slightly polarised and has a spectrum similar to that of the illuminating star, only bluer.
Reflection nebula
The Witch Head reflection nebula (IC2118), about 1000 light years from earth, is associated with the bright star Rigel in the constellation Orion.
Reflection Nebulae NGC1973, NGC1975 and NGC1977 in Orion
(RA 5h 35.1m , Dec. -4° 44', 20 x 10 arcmin.)
This bright reflection nebula is located about 30' N of M42 (see finder chart below).
reflection nebula
a cloud of gas and dust that is visible because the dust reflects a nearby star's light
reflector ...
Reflection Nebulae
Credit: NASA and The Hubble Heritage Team (STScI) ...
Reflection nebula. A gas cloud illuminated by a nearby star.
Retrograde motion 1. An actual motion contrary to the general direction of the bodies in the Solar System. An example of actual retrograde motion is Neptune's satellite Triton.
Reflection Nebula
A cloud of interstellar gas and dust whose spectrum contains absorption lines characteristic of the spectrum of nearby illuminating stars.
reflection nebula
A nebula which is illuminated by reflecting the light of nearby stars.
reflector
A telescope which uses a parabolic mirror at its base to collect light and focus it into an eyepiece for viewing.
Reflection Nebula
A nebula produced by starlight reflecting off dust particles in the interstellar medium.
Refracting Telescope ...
Reflection nebula
a type of nebula that shines by reflected light. Bright stars near reflection nebulae emit light into the region that is reflected by the large amount of dust there.
Reflection Nebulae - A cloud of interstellar gas and dust that is luminous because the dust it contains reflects the light of a nearby star ...
REFLECTION NEBULA
A reflection nebula is a nebula that glows as the dust in it reflects the light of nearby stars. These nebulae are frequently bluish in color because blue light is more efficiently reflected than red light.
Reflection Nebula In Astronomy, reflection nebulae are clouds of dust which are simply reflecting the light of a nearby star or stars.
Reflection nebulae are nebulae that reflect stars' light - stars from either inside or near the nebula. The Pleiades (pictured to the side) is a good example of a reflection nebula.
Reflection Nebula
Apod
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reflection nebula - (n.)
An interstellar cloud containing dust that shines by light reflected from a nearby star.
refracting telescope - (n.) ...
Reflection Nebula: A nebula composed of dust particles that scatter and reflect incident light (rather than glowing from their own intrinsic emission).
A reflection nebula (q.v.) discovered by Hind in 1852, which is illuminated by the star T Tauri. It is remarkable for its changes in brightness. (NGC 1554-5) [H76]
HIPPARCOS ...
Blue reflection nebula NGC2023 is below right of the Flame nebula and below left of the Horsehead.
Other reflection nebulae are IC435, IC432, IC431.
This reflection nebula has a usual visual magnitude of about 10, but this fluctuates sporadically. It was originally thought that as R Monocerotis's visual magnitude changed, so did the visual magnitude of the nebula.
NGC 1333 is a reflection nebula lying about 1,000 light-years from Earth. The clouds of dust and gas are illuminated by the light of a dense group of newborn stars, split into two sub-clusters: one appearing red and the other yellow and green.
Emission or Reflection Nebula: What is the shape of the nebula? Is its brightness even or are there brighter/darker areas? Are the edges of the nebula well defined? Are there any stars within the nebula?
reflection nebulae (NASA Thesaurus) Any celestial body having a hazy cloudy appearance whose brightness results from the scattering by dust particles of light from nearby stars. reflectivity (NASA SP-7, 1965) 1.
Another way that dust manifests itself is in the reflection nebula. Unlike emission nebula which produce light directly from emission from atoms in the nebula, a reflection nebula merely reflects light from some other source, typically a nearby star.
In the constellation of Orion can be found the brightest diffuse reflection nebula in the sky. This is M78. It is a member of the Orion complex, which is a large cloud of dust ad gas near the Orion Nebula, M42.
These stars reside in reflection nebulae and show gradual increases in their luminosity in the order of 6 magnitudes followed by a lengthy phase of constant brightness. They then dim by 2 magnitudes or so over a period of many years.
A reflection nebula is just a region of dust that is reflecting blue light towards you. These bluish regions are not always seen around H II regions but are seen often enough to be recognized. They can also be seen in other circumstances.
AAT 20 NGC 6589-90 reflection nebulae in Sagittarius
AAT 22 NGC 6520 open cluster and Barnard 86
AAT 26 NGC 6822, a galaxy in the Local Group
AAT 30 Stars in NGC 6514, the Trifid nebula, M20
AAT 93 NGC 6522 in Baade's window ...
The light blue patch in the upper left of the image is called a reflection nebula, where gas scatters light from stars born inside the Trifid Nebula. The largest of these stars shines like a beacon in the hot blue portion of the visible spectrum.
A reflection nebula shines by light reflected from nearby stars. An emission nebula shines by emitting light as electrons recombine with protons to form hydrogen.
This is a combination of a reflection nebula, reflecting light from inside out toward space, and an emission nebula, emitting light of its own from excited hydrogen gas. Therefore, it appears pink (emission) and blue (reflection).
Both faint reflection nebulae and opaque dark nebulae also abound in this region, particularly in the region between Antares and Rho Ophiuci. This is due to the fact that we are looking in the direction close to the center of our galaxy.
This is an image of the Pleiades, an open cluster/reflection nebulae 400 light years away. It is easily seen with the naked eye and is known as the Seven Sisters.
(62K JPG) ...
This value has been so far determined empirically, from the shape of the long-wavel;ength tail of the spectrum (especially from reflection nebulae which can be modelled in detail). For whole galaxies, values of the exponent near -1 fit well.
In the vicinity of bright stars the grains appear as glowing regions because of the intensity of the light they scatter; these regions are called reflection nebulae.
Since "nebulae" are my favorite objects, we'll stay here a minute. The Pleiades cluster contains an example of a reflection nebula; there are other kinds of nebulae.
The planetary nebula NGC 3132. Image courtesy of AURA/STScI and NASA.
A molecular cloud, NGC 1990, surrounds Alnilam and is partly illuminated as a reflection nebula by the star's intense radiation.
Visual magnitude
1.69 ...
A dark nebula is a type of interstellar cloud that is so dense that it obscures the light from the background emission or reflection nebula (e.g., the Horsehead Nebula) or that it blocks out background stars (e.g., the Coalsack Nebula).
A generic term for a fuzzy, diffuse astronomical object. Astronomers have observed four different types of nebulae: H II regions, reflection nebulae, planetary nebulae, and supernova remnants.
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Emission nebula are powered by young, massive stars and emit their own light, reflection nebulae shine by reflecting light from nearby massive stars, and dark nebulae, as the name suggests, ...
A glowing cloud of gas in interstellar space. The cloud of gas may be either an emission nebula, which absorbs ultraviolet light from nearby stars and re-radiates visible light, or a reflection nebula, which reflects light off of its dust particles.
The image below is nice one to illustrate the three types of nebulae: the red H II region behind a dark dust nebula (showing the effect of the extinction of light) and next to them a blue reflection nebula (showing the preferential scattering of ...
It is located in the constellation Taurus. Six of the stars in the Pleiades are visible without a telescope. Roughly 500 stars belong to the Pleiades star cluster; most of these are faint. A reflection nebula surrounds the stars.
inside of an earthly vacuum chamber), and form by gravitational instability inside those clouds triggered by shockwaves from supernovae. (High mass stars powerfully illuminate the clouds from which they formed. One example of such reflection nebulae ...
called the Trifid Nebula because of the dust lanes that trisect its midsection (insert). The blue region is unrelated to the red emission nebula and is caused by starlight reflected from intervening dust particles. It is called a reflection nebula.
The dark clouds are regions of dense interstellar dust, the reddish clouds diffuse nebulae ionized by hot stars, the blue clouds reflection nebulae caused by starlight scattered from dust grains. Image courtesy of Dr. Axel Mellinger.
 See also: Reflection, Nebula, Light, Star, Dust
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