THE ORION CONSTELLATION the Great Hunter
... 1. Rigel (Beta Orionis) is the brightest star in the constellation. With an apparent visual magnitude of 0.18, it is also the sixth brightest star in the sky. Rigel is really a star system composed of three stars. It has been a known visual binary since 1831, possibly even earlier, when F. G. Struve ...
... 1. Rigel (Beta Orionis) is the brightest star in the constellation. With an apparent visual magnitude of 0.18, it is also the sixth brightest star in the sky. Rigel is really a star system composed of three stars. It has been a known visual binary since 1831, possibly even earlier, when F. G. Struve ...
NCEA Level 2 Earth and Space Science (91192) 2013
... particles began to rotate around the young sun and flattened into a disk shape called a protoplanetary disk. Inside the swirling disk, rocky particles began to collide and formed bigger masses. This increase in mass attracted even more particles due to an increase in gravitational field strength. Th ...
... particles began to rotate around the young sun and flattened into a disk shape called a protoplanetary disk. Inside the swirling disk, rocky particles began to collide and formed bigger masses. This increase in mass attracted even more particles due to an increase in gravitational field strength. Th ...
NCEA Level 2 Earth and Space Science (91192)
... particles began to rotate around the young sun and flattened into a disk shape called a protoplanetary disk. Inside the swirling disk, rocky particles began to collide and formed bigger masses. This increase in mass attracted even more particles due to an increase in gravitational field strength. Th ...
... particles began to rotate around the young sun and flattened into a disk shape called a protoplanetary disk. Inside the swirling disk, rocky particles began to collide and formed bigger masses. This increase in mass attracted even more particles due to an increase in gravitational field strength. Th ...
The Circumstellar Medium of Massive Stars in Motion
... either by dynamical interactions with other stars inside the cluster, or by the disruption of a binary system when one of its components explodes. These stars, known as runaways or exiles, move through the ISM supersonically and this modifies the otherwise spherical CSM to a roughly axisymmetric sol ...
... either by dynamical interactions with other stars inside the cluster, or by the disruption of a binary system when one of its components explodes. These stars, known as runaways or exiles, move through the ISM supersonically and this modifies the otherwise spherical CSM to a roughly axisymmetric sol ...
C:\Documents and Settings\Administrator\Desktop\Lecture 15.wpd
... 2) Calculate by taking logarithms of both sides ...
... 2) Calculate by taking logarithms of both sides ...
The Rigel Star - Emmi
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
Winter 2014
... After this process ends, a star cluster is left behind. The Pleiades star cluster is close enough that we can see the brightest several stars by eye. Returning to Orion, we can follow the Belt down and to the left and find ourselves at the brightest star in Earth’s night sky, Sirius. Sirius is one o ...
... After this process ends, a star cluster is left behind. The Pleiades star cluster is close enough that we can see the brightest several stars by eye. Returning to Orion, we can follow the Belt down and to the left and find ourselves at the brightest star in Earth’s night sky, Sirius. Sirius is one o ...
January-February-March - WVU Planetarium
... If you were to look in the contents of the Royal Astronomical Society of Canada’s excellent annual publication “Observer’s Handbook” for their Table of the Brightest Stars, you would find Rigel’s (the second brightest star in Orion after Betelgeuse) MK type as B8 Ia. Looking at the Spectral Type Tab ...
... If you were to look in the contents of the Royal Astronomical Society of Canada’s excellent annual publication “Observer’s Handbook” for their Table of the Brightest Stars, you would find Rigel’s (the second brightest star in Orion after Betelgeuse) MK type as B8 Ia. Looking at the Spectral Type Tab ...
Major Stars of the Orion Constellation
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
+(J - cloudfront.net
... spectrum and temperature of a certain star are used to determine its luminosity to be approximately 5.0 x 1031 W. The '!Pparent brightness of the star is 1.4 x 10-9 W m-2. These data can be used to detennine the distance ofihe'staifromEarth~------""----..-.--..---- - - ..(i) ...
... spectrum and temperature of a certain star are used to determine its luminosity to be approximately 5.0 x 1031 W. The '!Pparent brightness of the star is 1.4 x 10-9 W m-2. These data can be used to detennine the distance ofihe'staifromEarth~------""----..-.--..---- - - ..(i) ...
five minute episode script
... DISTINCTIVE BELT OF THREE STARS. IF YOU LOOK A LITTLE CLOSER YOU'LL SEE STARS OF DIFFERENT BRIGHTNESS AND COLOR. DEAN: STAR COLOR IS AN INDICATION OF ITS TEMPERATURE - BLUE STARS BEING THE HOTTEST AND RED STARS BEING THE COLDEST. YOU CAN REALLY SEE THE COLORS OF THE BRIGHTEST STARS LIKE THOSE IN ORI ...
... DISTINCTIVE BELT OF THREE STARS. IF YOU LOOK A LITTLE CLOSER YOU'LL SEE STARS OF DIFFERENT BRIGHTNESS AND COLOR. DEAN: STAR COLOR IS AN INDICATION OF ITS TEMPERATURE - BLUE STARS BEING THE HOTTEST AND RED STARS BEING THE COLDEST. YOU CAN REALLY SEE THE COLORS OF THE BRIGHTEST STARS LIKE THOSE IN ORI ...
Redshift - Old Age and Red Giants
... The path is complex and depends on the star’s mass. Different stars that are more or less massive than the sub take very different paths and end their stellar lives in different ways. Describe how you can tell if a star is still burning hydrogen in its core or if its core has begun to fuse other ele ...
... The path is complex and depends on the star’s mass. Different stars that are more or less massive than the sub take very different paths and end their stellar lives in different ways. Describe how you can tell if a star is still burning hydrogen in its core or if its core has begun to fuse other ele ...
LIGO Star Chart
... shape. The best observations can be made from early September through December. ...
... shape. The best observations can be made from early September through December. ...
Here - Thanet Astronomy Group
... Thanet Astronomy Group Astronomy for Everyone in Plain English What to See, February 2014 ...
... Thanet Astronomy Group Astronomy for Everyone in Plain English What to See, February 2014 ...
The winter sky over Bosham
... ‘shoulder’ and Rigel the lower right ‘foot’— the name itself is derived from the Arabic word ‘rijl’. Both are about ten million years old and near the end of their lives, but can you see a difference in colour? Rigel is a blue/white star roughly twice as hot as the Sun, whereas Betelgeuse is orange- ...
... ‘shoulder’ and Rigel the lower right ‘foot’— the name itself is derived from the Arabic word ‘rijl’. Both are about ten million years old and near the end of their lives, but can you see a difference in colour? Rigel is a blue/white star roughly twice as hot as the Sun, whereas Betelgeuse is orange- ...
The Dramatic Lives of Stars
... Given the position of young stars in the HR diagram, which of the following is true? A 0.5 solar mass star mostly: ...
... Given the position of young stars in the HR diagram, which of the following is true? A 0.5 solar mass star mostly: ...
Week 6
... has a radius 936 times that of the Sun and a surface temperature of 3500 K. What is the luminosity of this star? If Betelgeuse is 640 ly from Earth, what is the brightness of the light from Betelgeuse that reaches Earth? ...
... has a radius 936 times that of the Sun and a surface temperature of 3500 K. What is the luminosity of this star? If Betelgeuse is 640 ly from Earth, what is the brightness of the light from Betelgeuse that reaches Earth? ...
2.64 3.26156 8.61 pc ly × =
... 2.64 pc 3.26156 ly pc 8.61ly 13.48. Sirius is 22 times more luminous than the Sun, and Polaris (the “North Pole Star”) is 2350 times more luminous than the Sun. Sirius appears 23 times brighter than Polaris. How much farther away from us is Polaris than Sirius? What is the distance of Polaris in ...
... 2.64 pc 3.26156 ly pc 8.61ly 13.48. Sirius is 22 times more luminous than the Sun, and Polaris (the “North Pole Star”) is 2350 times more luminous than the Sun. Sirius appears 23 times brighter than Polaris. How much farther away from us is Polaris than Sirius? What is the distance of Polaris in ...
Starry Night¨ Times - October 2008
... (40x) to find the object, and then try 100x and 200x. The name "planetary" is misleading, as these objects are not planets at all but stars at the end of their life cycle. However, they do look something like cloudy planets, and this fact confused earlier observers whose incorrect naming convention ...
... (40x) to find the object, and then try 100x and 200x. The name "planetary" is misleading, as these objects are not planets at all but stars at the end of their life cycle. However, they do look something like cloudy planets, and this fact confused earlier observers whose incorrect naming convention ...
The HR Diagram Interpreted: Properties of Stars
... You may say “so what?” – perhaps you expected there to be very small stars. But further analysis reveals something amazing. ...
... You may say “so what?” – perhaps you expected there to be very small stars. But further analysis reveals something amazing. ...
Betelgeuse
Betelgeuse (/ˈbiːtəldʒuːz/, /ˈbɛtəldʒuːz/, /ˈbiːtəldʒɜrz/ or /ˈbiːtəldʒuːs/), also known by its Bayer designation Alpha Orionis (shortened to α Orionis or α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion. Distinctly reddish, it is a semiregular variable star whose apparent magnitude varies between 0.2 and 1.2, the widest range of any first-magnitude star. Betelgeuse is one of three stars that make up the Winter Triangle, and it marks the center of the Winter Hexagon. The star's name is derived from the Arabic إبط الجوزاء Ibt al-Jauzā', meaning ""the hand of Orion"". The Arabic letter for Y (which has two dots) was misread as B (with one dot) by medieval translators, creating the initial B in Betelgeuse.The star is classified as a red supergiant of spectral type M2Iab and is one of the largest and most luminous observable stars. If Betelgeuse were at the center of the Solar System, its surface would extend past the asteroid belt, possibly to the orbit of Jupiter and beyond, wholly engulfing Mercury, Venus, Earth and Mars. Estimates of its mass are poorly constrained, but range from 5 to 30 times that of the Sun. Its distance from Earth was estimated in 2008 at 640 light-years, yielding a mean absolute magnitude of about −6.02. Less than 10 million years old, Betelgeuse has evolved rapidly because of its high mass. Having been ejected from its birthplace in the Orion OB1 Association—which includes the stars in Orion's Belt—this crimson runaway has been observed moving through the interstellar medium at a supersonic speed of 30 km/s, creating a bow shock over 4 light-years wide. Currently in a late stage of stellar evolution, the supergiant is expected to proceed through its life cycle before exploding as a type II supernova within the next million years. An observation by the Herschel Space Observatory in January 2013 revealed that the star's winds are crashing against the surrounding interstellar medium.In 1920, Betelgeuse became the second star (after the Sun) to have the angular size of its photosphere measured. Since then, researchers have used telescopes with different technical parameters to measure the stellar giant, often with conflicting results. Studies since 1990 have produced an angular diameter (apparent size) ranging from 0.043 to 0.056 arcseconds, an incongruity largely caused by the star's tendency to periodically change shape. Due to limb darkening, variability, and angular diameters that vary with wavelength, many of the star's properties are not yet known with any certainty. Adding to these challenges, the surface of Betelgeuse is obscured by a complex, asymmetric envelope roughly 250 times the size of the star, caused by colossal mass loss.