star a
... gray sequences is which luminosity class. From top to bottom: Ia, luminous supergiants Ib, supergiants III, giants V, main sequence Examples: G2V The Sun ...
... gray sequences is which luminosity class. From top to bottom: Ia, luminous supergiants Ib, supergiants III, giants V, main sequence Examples: G2V The Sun ...
Introduction to Basic Stargazing Part II - Naples Free-Net
... Introduction to Basic Stargazing Part II Measures of Distance: Distances in our Solar System are often measured in miles, or kilometers for the metrically inclined, in popular news media. More commonly among professionals and hobbyists is the astronomical unit (au) – one au is defined as the average ...
... Introduction to Basic Stargazing Part II Measures of Distance: Distances in our Solar System are often measured in miles, or kilometers for the metrically inclined, in popular news media. More commonly among professionals and hobbyists is the astronomical unit (au) – one au is defined as the average ...
Galaxies
... central bulge • Forms spiral arms that contain a lot of gas and dust • Population I stars are found in the spiral arms – these are young O and B main-sequence stars – they are often found in open clusters ...
... central bulge • Forms spiral arms that contain a lot of gas and dust • Population I stars are found in the spiral arms – these are young O and B main-sequence stars – they are often found in open clusters ...
Deep Space Mystery Note Form 3
... Brightest- SN 1006 recorded by Chinese and Islamic astronomers SN 1054 produced the Crab Nebula. Latest observed in the milky way with the naked eye was SN 1572 and SN 1604 Telescope has allowed us to look farther than the milky way. 1885 observation of supernova S Andromedae in the Androm ...
... Brightest- SN 1006 recorded by Chinese and Islamic astronomers SN 1054 produced the Crab Nebula. Latest observed in the milky way with the naked eye was SN 1572 and SN 1604 Telescope has allowed us to look farther than the milky way. 1885 observation of supernova S Andromedae in the Androm ...
Skylights - May 2017 - Astronomical Society of Northern New England
... times larger than our sun and probably has at least one Jupiter-sized planet orbiting around it. Pioneer 10, our first deep-space probe launched in 1972, will pass fairly close to this star in about 2 million years if no one intercepts it before then. So when you look at these two orange objects in ...
... times larger than our sun and probably has at least one Jupiter-sized planet orbiting around it. Pioneer 10, our first deep-space probe launched in 1972, will pass fairly close to this star in about 2 million years if no one intercepts it before then. So when you look at these two orange objects in ...
the universe
... The Universe Scientists have gathered a lot of evidence and information about the universe. They have used their observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny p ...
... The Universe Scientists have gathered a lot of evidence and information about the universe. They have used their observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe was concentrated into a single incredibly tiny p ...
the universe
... The Universe (source: www.bbc.co.uk/bitesize/gcse/science /) Scientists have gathered a lot of evidence and information about the universe. They have used their observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe ...
... The Universe (source: www.bbc.co.uk/bitesize/gcse/science /) Scientists have gathered a lot of evidence and information about the universe. They have used their observations to develop a theory called the Big Bang. The theory states that about 13,700 million years ago all the matter in the universe ...
Camelopardalis-Better-Know-A-Constellation
... • Although Camelopardalis is the 18th largest constellation, (757 sq. deg. ) it is not a particularly bright constellation, as the brightest stars are only of fourth magnitude. • β Camelopardalis is the brightest star, at apparent magnitude 4.03. This star is a double star, with components of magnit ...
... • Although Camelopardalis is the 18th largest constellation, (757 sq. deg. ) it is not a particularly bright constellation, as the brightest stars are only of fourth magnitude. • β Camelopardalis is the brightest star, at apparent magnitude 4.03. This star is a double star, with components of magnit ...
8.1 Stars
... The area with the largest mass starts to pull more mass in. The matter pulled in has excess energy which causes the central ball of material to begin to spin. Extremely high pressures build up inside the ball, which in turn causes the tightly packed atoms to heat up. As the temperature climbs, the ...
... The area with the largest mass starts to pull more mass in. The matter pulled in has excess energy which causes the central ball of material to begin to spin. Extremely high pressures build up inside the ball, which in turn causes the tightly packed atoms to heat up. As the temperature climbs, the ...
Problem Set No. 5
... A one solar mass star will spend 10 billion years on the main sequence. The universe is only 13-14 billion years old. From the formula T = 1/M 2.5 and the sun’s lifetime, we see that a star of 0.9 solar masses should spend 13 billion years on the main sequence. So no stars of lower mass would have h ...
... A one solar mass star will spend 10 billion years on the main sequence. The universe is only 13-14 billion years old. From the formula T = 1/M 2.5 and the sun’s lifetime, we see that a star of 0.9 solar masses should spend 13 billion years on the main sequence. So no stars of lower mass would have h ...
Life and fate of a star
... available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reactions another five billion years, the should produce carbon and oxygen atoms from the helium of the core. core of our Sun will run out of Heavier elements only form in more massive stars fuel as its h ...
... available hydrogen reservoir. In ● At the end of the red giant phase of the Sun, nuclear fusion reactions another five billion years, the should produce carbon and oxygen atoms from the helium of the core. core of our Sun will run out of Heavier elements only form in more massive stars fuel as its h ...
HW #02 Solutions
... 10. If our Sun has a surface temperature of 5840 K, how many times hotter than the Sun is the hottest Otype star? How many times cooler than the Sun is the coolest M-type star? The hottest O-type star has a temperature of about 50,000 K and this is approximately 10 times hotter than the Sun (5,800 K ...
... 10. If our Sun has a surface temperature of 5840 K, how many times hotter than the Sun is the hottest Otype star? How many times cooler than the Sun is the coolest M-type star? The hottest O-type star has a temperature of about 50,000 K and this is approximately 10 times hotter than the Sun (5,800 K ...
Unit: Southern Europe
... GLE 0507.6.2: I can use charts to locate and identify star patterns. This means I can use a star chart to identify constellations in the night’s sky throughout the year. I can explain why it is important to know the time of night, the time of year, and the latitude to correctly identify the constell ...
... GLE 0507.6.2: I can use charts to locate and identify star patterns. This means I can use a star chart to identify constellations in the night’s sky throughout the year. I can explain why it is important to know the time of night, the time of year, and the latitude to correctly identify the constell ...
DSLR photometry - British Astronomical Association
... P Cygni is a hypergiant luminous blue variable and is intrinsically one of the most luminous stars in the Milky Way galaxy (610,000 as luminous as the Sun) The star is located about 5000 to 6000 light years from the Earth. Today it has an estimated magnitude of 4.8 ± 0.5 Part of an ongoing campaign ...
... P Cygni is a hypergiant luminous blue variable and is intrinsically one of the most luminous stars in the Milky Way galaxy (610,000 as luminous as the Sun) The star is located about 5000 to 6000 light years from the Earth. Today it has an estimated magnitude of 4.8 ± 0.5 Part of an ongoing campaign ...
ch 2 the sky
... Most of the planets of our solar system are visible to the unaided eye, though they produce no light of their own, but we see them because sunlight reflects off of them ◦ Mercury, Venus, Mars, Jupiter, and Saturn can all be seen with out the aid of a telescope Figure 2-21 shows the location of Mer ...
... Most of the planets of our solar system are visible to the unaided eye, though they produce no light of their own, but we see them because sunlight reflects off of them ◦ Mercury, Venus, Mars, Jupiter, and Saturn can all be seen with out the aid of a telescope Figure 2-21 shows the location of Mer ...
Astronomy 104: Homework Set 5 Due: Monday, March 16, 2015
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
ASTR 5340: Radio Astronomy Problem Set 1 Due: 13 September
... The star Betelgeuse is an excellent candidate. Betelgeuse (aka α Orionis because it is the brightest star visible in the Orion constellation) is the red star that defines the left shoulder of Orion. It is an extremely luminous (bolometric luminosity L ≈ 105 L⊙ , where the ⊙ subscript refers to the S ...
... The star Betelgeuse is an excellent candidate. Betelgeuse (aka α Orionis because it is the brightest star visible in the Orion constellation) is the red star that defines the left shoulder of Orion. It is an extremely luminous (bolometric luminosity L ≈ 105 L⊙ , where the ⊙ subscript refers to the S ...
The correct answers are written in bold, italic and underlined. The
... Degenerate pressure of electrons is independent of temperature, so heating the gas does not produce expansion that, in a normal gas, would cool and stabilize the gas temperature like a thermostat. 9. A globular cluster of stars is judged to be • young because it contains only young, red stars that ...
... Degenerate pressure of electrons is independent of temperature, so heating the gas does not produce expansion that, in a normal gas, would cool and stabilize the gas temperature like a thermostat. 9. A globular cluster of stars is judged to be • young because it contains only young, red stars that ...
Stars: Their Life and Afterlife
... released by fusion reactions stabilizes the interior of the star against gravity, and a mainsequence star is born. What is the range of masses that a zero-age main-sequence star can have? At the low end, stars need to be massive enough for the pressure and temperature in the core to be high enough t ...
... released by fusion reactions stabilizes the interior of the star against gravity, and a mainsequence star is born. What is the range of masses that a zero-age main-sequence star can have? At the low end, stars need to be massive enough for the pressure and temperature in the core to be high enough t ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.