Lecture 12
... source with the unit magnitudes • Magnitudes are a logarithmic representation of the spectral flux density of a source. – Allows for easy comparison of sources with immense ranges in flux density. – The magnitude system, let’s be honest, is not readily intuitive. ...
... source with the unit magnitudes • Magnitudes are a logarithmic representation of the spectral flux density of a source. – Allows for easy comparison of sources with immense ranges in flux density. – The magnitude system, let’s be honest, is not readily intuitive. ...
combined astro show 2013
... What can LIGHT tell us about the objects in space that produce them? ...
... What can LIGHT tell us about the objects in space that produce them? ...
Chapter 25 Beyond Our Solar System
... • At some point after fusion begins, a star becomes a balanced, mainsequence star. For an average star, this stage lasts 90 percent of the star’s life. • Once all of the hydrogen in a star’s core is consumed, the star expands and cools, becoming a red giant. All stars, regardless of their size, even ...
... • At some point after fusion begins, a star becomes a balanced, mainsequence star. For an average star, this stage lasts 90 percent of the star’s life. • Once all of the hydrogen in a star’s core is consumed, the star expands and cools, becoming a red giant. All stars, regardless of their size, even ...
Lesson #5: Constellations - Center for Learning in Action
... Ask the students what they know about stars. Try to lead them towards the definition: Stars are massive shining spheres of hot gas. The stars you can see with your naked eye in the night sky are part of the Milky Way Galaxy, a huge system of stars that contains our solar system. Use pictures or over ...
... Ask the students what they know about stars. Try to lead them towards the definition: Stars are massive shining spheres of hot gas. The stars you can see with your naked eye in the night sky are part of the Milky Way Galaxy, a huge system of stars that contains our solar system. Use pictures or over ...
Measuring stars Part I
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
... Using the weird equation, the distance to deneb can be calculated: 2500 light years (M – m = 5 – 5log(d)) One last obvious question: How did we ever know the Absolute visual magnitude to Deneb without knowing its distance in the ...
Table Number: _____
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
Finding Your Way In The Sky
... • Many proper star names are Arabic • Catalog labels also used (Alpha Centauri) • Constellation names are Latin – Ancient groups from Near Eastern myths via Greeks – Numerous 17th-18th Century inventions • 89 Constellations – Fixed boundaries in sky – Every star is in one, and only one, constellatio ...
... • Many proper star names are Arabic • Catalog labels also used (Alpha Centauri) • Constellation names are Latin – Ancient groups from Near Eastern myths via Greeks – Numerous 17th-18th Century inventions • 89 Constellations – Fixed boundaries in sky – Every star is in one, and only one, constellatio ...
7th Grade Astronomy Study Guide
... ____ 18. A star’s apparent shift in position is called a(n) a. light-year. c. galaxy. b. parallax. d. absolute. ____ 19. Which of the following are large clouds of gas and dust? a. a galaxy c. a nebula b. a neutron star d. a globular cluster ____ 20. The H-R diagram shows the relationship of a star’ ...
... ____ 18. A star’s apparent shift in position is called a(n) a. light-year. c. galaxy. b. parallax. d. absolute. ____ 19. Which of the following are large clouds of gas and dust? a. a galaxy c. a nebula b. a neutron star d. a globular cluster ____ 20. The H-R diagram shows the relationship of a star’ ...
Classification_of_Stars_By_Luminosity
... He called the brightest stars in the sky first magnitude and the dimmest visible to the naked eye sixth magnitude. Stars of intermediate brightness were given intermediate values. ...
... He called the brightest stars in the sky first magnitude and the dimmest visible to the naked eye sixth magnitude. Stars of intermediate brightness were given intermediate values. ...
Part 1- The Basics
... • The apparent displacement of a nearby object against a distant fixed background from two different viewpoints. ...
... • The apparent displacement of a nearby object against a distant fixed background from two different viewpoints. ...
Star Gazing
... Cassiopeia: left V eats Polaris Cassiopeia: right V points to Andromeda (only galaxy visible to the naked eye); then Andromeda curves to Great Square of Pegasus • Deneb (NE) to Altair (southern tip of Summer Triangle) points to bottom left of The Teapot handle ...
... Cassiopeia: left V eats Polaris Cassiopeia: right V points to Andromeda (only galaxy visible to the naked eye); then Andromeda curves to Great Square of Pegasus • Deneb (NE) to Altair (southern tip of Summer Triangle) points to bottom left of The Teapot handle ...
Document
... • Absolute Mag = m – 5log(d/10pc) = -5 – Our sun M ~5, Betelgeuse = 10,000x luminosity ...
... • Absolute Mag = m – 5log(d/10pc) = -5 – Our sun M ~5, Betelgeuse = 10,000x luminosity ...
Stars and the Sun
... – Apparent magnitude: as seen from Earth, lower (including negative) is brighter! – Absolute magnitude: if all stars were same distance from Earth, lower (including negative) is brighter! ...
... – Apparent magnitude: as seen from Earth, lower (including negative) is brighter! – Absolute magnitude: if all stars were same distance from Earth, lower (including negative) is brighter! ...
Stars
... • Absolute Mag = m – 5log(d/10pc) = -5 – Our sun M ~5, Betelgeuse = 10,000x luminosity ...
... • Absolute Mag = m – 5log(d/10pc) = -5 – Our sun M ~5, Betelgeuse = 10,000x luminosity ...
Constellations
... D. The number of years in a decade 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Orion B. It plays an important role in the myth of Orion C. It is located near the constellation Orion ...
... D. The number of years in a decade 3. Astronomers recognize the Orion Nebula as a large celestial body. What can you infer about the Orion Nebula from its name? A. It is a star in the constellation Orion B. It plays an important role in the myth of Orion C. It is located near the constellation Orion ...
AST 207 Homework 5 Due 14 October 2011
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
Chapter 16 Lesson 2: What is a Star
... 1. Irregular galaxies are probably young galaxies with their stars are still forming. Constellations a. Ursa Major is a constellation, an area of the sky and all the stars seen in that area, in the Milky Way. 1. A constellation is like a star’s address in which scientists use to help them locate sta ...
... 1. Irregular galaxies are probably young galaxies with their stars are still forming. Constellations a. Ursa Major is a constellation, an area of the sky and all the stars seen in that area, in the Milky Way. 1. A constellation is like a star’s address in which scientists use to help them locate sta ...
ASTRONOMY 313
... 6. When the Sun has swollen to full red-giant size (R 0.5 A.U. = 107.5 R), its luminosity will be about 2000 times greater than it is now (i.e. L/L = 2000). Assume that the size of the Earth’s orbit remains unchanged. a. Calculate the Sun’s angular diameter at that time as seen from the Earth. ...
... 6. When the Sun has swollen to full red-giant size (R 0.5 A.U. = 107.5 R), its luminosity will be about 2000 times greater than it is now (i.e. L/L = 2000). Assume that the size of the Earth’s orbit remains unchanged. a. Calculate the Sun’s angular diameter at that time as seen from the Earth. ...
Question C:
... the galactic center, throughout the galactic halo. We are a distance of 8.5 kpc from the galactic center, so M3 seems to be a relatively close globular cluster, and it is not surprising that it made it into Messier’s catalog. ...
... the galactic center, throughout the galactic halo. We are a distance of 8.5 kpc from the galactic center, so M3 seems to be a relatively close globular cluster, and it is not surprising that it made it into Messier’s catalog. ...
Cepheus (constellation)
... Cepheus is a constellation in the northern sky. It is named after Cepheus, King of Aethiopia in Greek mythology. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. ...
... Cepheus is a constellation in the northern sky. It is named after Cepheus, King of Aethiopia in Greek mythology. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. ...
100 X size of Sun - East Penn School District
... • The scientific name for the twinkling of stars is stellar scintillation • Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere. ...
... • The scientific name for the twinkling of stars is stellar scintillation • Stars twinkle when we see them from the Earth's surface because we are viewing them through thick layers of turbulent (moving) air in the Earth's atmosphere. ...
Merak
... How Far Away: 62 light years away How Bright: About 50 times brighter than the Sun Where to View: In the constellation Ursa Major. When to View:All year round in the Northern Hemisphere ...
... How Far Away: 62 light years away How Bright: About 50 times brighter than the Sun Where to View: In the constellation Ursa Major. When to View:All year round in the Northern Hemisphere ...
Winter constellations
... young blue stars. Aldebaran is a red supergiant star and is about five times the mass of the sun. The name means ‘follower’ because it follows the Pleiades, the Seven Sisters, which are located on the other side of Taurus from Orion. With the naked eye you should be able to make out 6 or 7 stars in ...
... young blue stars. Aldebaran is a red supergiant star and is about five times the mass of the sun. The name means ‘follower’ because it follows the Pleiades, the Seven Sisters, which are located on the other side of Taurus from Orion. With the naked eye you should be able to make out 6 or 7 stars in ...
Friday, August 29
... • Length of the shadow of a meter stick was 0.605m • Trigonometry: 58.8 degrees (sig figs!) ...
... • Length of the shadow of a meter stick was 0.605m • Trigonometry: 58.8 degrees (sig figs!) ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.