Called parallax, this is usually used for measuring distances to stars (Alcor and its companion are 80 light years away), but Zimmerman and his colleagues realised that if this new star followed Alcor precisely in its parallactic motion, ...
The new star, for February 12, 2010, is 14 Aur (14 Aurigae), quintuple with a white dwarf, featuring a Hubble image.
The past 10 stars were, for: ...
A few star-naming companies sell the right to list stars in their private registries under whatever name the buyer so chooses.
A new star will fall at a specific point on the main sequence of the Hertzsprung-Russell diagram, with the main sequence spectral type depending upon the mass of the star.
A few star parties establish a particular channel and PL tone for use by those arriving to the observing site. This is an excellent concept. One idea would utilize one of the 22 FRS/GMRS channels like so...
A new star, usually appearing suddenly, shining for a brief period, and then sinking into obscurity. Such appearances are supposed to result from cosmic collisions, as of a dark star with interstellar nebulosities.
A: New star names appear in leading journals by recognized scientists, and the names must be accepted by the International Astronomical Union (most bright stars have old, Arabic names, like Aldebaran).
The new star in the constellation Cassiopeia had caused Tycho to rededicate himself to astronomy; one immediate decision was to establish a large observatory for regular observations of celestial events.
Many new star clusters are still partially hidden by the dust and gas leftover from star formation, making them more difficult to view in visible light.
When a new star appeared October 9, 1604, observers could use only their eyes to study it. The telescope would not be invented for another four years.
The new star could have been a comet, something we now know to be much different than a nova, but long ago comets, like novae, were regarded as heralding important events (though comets usually portended something bad!).
Our sun is a yellow star. That makes it one of the cooler stars.
The sun looks very big to us. But it is just a medium-sized star. The sun looks so big because it is close to the Earth.
Twinkle, twinkle, little star.
Now I know just what you are.
supernova: A new star appearing in Earth's sky and lasting for a year or so before fading. Caused by the violent explosion of a star.
supernova (type I): The explosion of a star, believed caused by the transfer of matter to a white dwarf.
1 mag yellow star (G2V) and a 1.33 mag orange star (K1V). Both revolve each other with a period of 80 years. This system lies in a distance of 4.3 light years. Even closer lies Proxima Cen, a red dwarf of 11th mag, the closest star to our our sun.
This was the first variable star to be discovered, having been noticed in 1596 by David Fabricius, who thought it was a new star (a Nova).
During the early stages of pre-production of the new Star Trek: The Next Generation series, it became apparent to producers Robert Justman, Edward K.
The stars themselves appeared motionless to the astronomers, except on the rare occasion when a new star suddenly appeared and then faded away. Astrophysics in this setting hardly existed.
According to Pliny the Elder, he observed a nova (new star). So that later generations could tell whether other stars came to be, perished, moved, or changed in brightness, he recorded the position and brightness of the stars.
He made observations of a supernova (literally: nova= "new star") in 1572 (we now know that a supernova is an exploding star, not a new star).
(a) A star that brightens suddenly and to an unprecedented degree, creating the impression that a new star has appeared where none was before. Hence the name, from nova for "new". see Supernova [F88] ...
Before the era of modern astronomy, a star that appeared suddenly where none had been seen before was called a nova, or "new star". This is a misnomer, as the stars involved had existed long before they became visible to the naked eye.
Only things near the Earth change, so the new star should be close to the Earth.
In 1572 a "new star" (in today's language, a nova) appeared in the sky, not far from Polaris, outshining all others.
In February 1987 a new star appeared in the Large Magellanic Cloud, a neighbouring galaxy 170,000 light years away. What was remarkable was that this was the first naked-eye supernova (SN) visible since 1604.
One of the unsolved problems in astronomy is the question of what induces a particular clump of cosmic raw material at some particular time to form a new star (and, we believe, sometimes an accompanying planetary system).
As these stars form, the emission nebulae that appear around them send shock waves through the surrounding gas, possibly triggering new star formation. Similarly, when the stars explode in supernovae, more shocks are formed.
Alpha Centauri A is a yellow star with a spectral type of G2, the same as the Sun's. Therefore its temperature and color also match those of the Sun. Alpha Centauri B is an orange star with a spectral type of K1.
If this is the case, the event must have taken place before the thin disk had fully formed, as both observations and N-body modeling indicate such events disrupt the disk and consume a significant fraction of the cold gas in a burst of new star ...
A nova is what the ancients called a "new star." In reality, it is not a new star at all, but a very old one that suddenly becomes bright again, regaining some of the former glory of its youth.
They are found orbiting in a "cloud" around galaxies, and there is no mechanism currently known which will produce much new star formation in most members of this class of objects.
Our Sun is a medium-sized yellow star that is 93,026,724 miles (149,680,000 km) from Earth. Its diameter is 865,121 miles (1,391,980 km).
The fiery birth of a new star can be quite dramatic as in the example of XZ Tauri shown above and HH 30's Jet to the right.
One night in 1572, Danish astronomer Tycho Brahe saw what he thought was a brilliant new star in the constellation Cassiopeia. (We now know he was observing a supernova.) In 1604, a second supernova was observed.
It is a common middle-sized yellow star which scientists have named Sol. This is why our system of planets is called the Solar System. There are trillions of other stars in the Universe just like it.
Orion is also one of the most ancient constellations, being among the few star groups known to the earliest Greek writers such as Homer and Hesiod. Even in the space age, Orion remains one of the few star patterns that non-astronomers can recognize.
However, you can use the same ChView Java controls used in ChView star maps to rotate, tilt, expand, contract, re-center, and double-click to "jump" to your final destination.
Deep in the suburbs of this galaxy, about 30,000 light years from the centre lies a rather unspectacular yellow star. This is our sun.
The only reason the sun lights up our sky is because it is so much closer than any other stars.
As the matter disperses into ever greater and greater volumes, new star formation would drop off. The average temperature of the Universe would asymptotically approach absolute zero, and the Universe would become very still and quiet.
After Danish astronomer Tycho Brahe in 1572 spotted a bright new star -- a supernova -- the star faded. That contradicted the Greeks who had said the sky never changed.
It is surmised that eventually the gases will coalesce, producing either a new star or perhaps even a whole new system of sun and planets, similar to our own.
[576] mu Arae or HD 160691 in the Henry Draper catalogue, is a yellow star with a planetary system believed to contain four planets, three of them similar to Jupiter in size.
They are recurring villains in the 1960s television show Star Trek: The Original Series, and have appeared in all five spin-off series and seven feature films....
Proverb", referencing the phrase's usage in Star Trek II: The Wrath of Khan ...
He also observed the "new star" (really a nova) in Cassiopeia in 1572. He observed a comet in 1577 and was realized that it was not in the atmosphere, but was in space. He corrected most astronomical quantities.
The Rigel Kentaurus system is a triple star system. The A star primary is of spectral type G2V, that is yellow star of the same type as our sun. This star is slightly larger in mass and diameter than the sun, and slightly more luminous.
The name originates from the Latin nova stella for new star, which is exactly what early astronomers thought they were seeing.
From Latin meaning "new"; a sudden brightening of a star, making it appear as a new star in the sky; believed associated with eruptions on white dwarfs in binary systems.
Nuclear Bulge ...
Mergers can take anywhere from a few hundred million to a few billion years to complete. They can trigger intense bursts of new star formation, and even create gigantic black holes.
Stars Remain Unscathed ...
Alnath is a dim (magnitude 1.65) bluish-white star (B-type, like Rigel), while Capella is a bright (magnitude 0.1) yellow star (G-type, like our Sun).
0, now used for new star-position catalogues and in solar-system-orbital calculations, means 2000 Jan. 1.5 Barycentric Dynamical Time (TDB) = Julian Date 2451545.0 TDB.
seen in HI 21cm maps
seen in distribution of star formation regions
(seen in other galaxies)
arms follow star formation ---
brighter/bluer ...
The Skidi Band decided when to hold certain events by looking at where the stars were in the sky. In fact, the Pawnee drew star charts a long time ago.
The star catalog of Hipparchus (2nd century BC) included 1020 stars and was used to assemble Ptolemy's star catalogue. Hipparchus is known for the discovery of the first recorded nova (new star).
The Spitzer Space Telescope's first images show star forming regions in our galaxy, cold dust orbiting nearby stars, and comets and asteroids.
Giant Molecular Cloud (GMC)
Massive clouds of gas in interstellar space composed primarily of hydrogen molecules. These clouds have enough mass to produce thousands of stars and are frequently the sites of new star formation.
Some of this energy is released as visible light, which makes the star glow. Stars come in different sizes, colors, and temperatures. Our Sun, the center of our solar system, is a yellow star of average temperature and size.
However, disturbance does occur. Such disturbance may be caused by the collisions of galaxies, the density wave of the hosting galaxy, the shock wave of a supernova, or even the birth of a new star nearby.
is composed of dim stars that can be found south of Cetus, the sea-monster, between Fornax, the furnace (also called Apparatus Chemicus or Fornax Chemica) and Sculptor (also known as Apparatus Sculptoris). The constellation appeared in a few star ...
This is a huge clump of very cold gas that has a total mass of about 2000 times the mass of the Sun. The gas from this cloud slowly collapses due to gravity to form stars. Whenever a bright, new star is formed, ...
Used for W stars and W-R stars. Wolf-Wolfer-Wolfest number (NASA SP-7, 1965) = relative sunspot number.
 See also: Star, Light, Sun, Earth, Planet
  
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