The magnitude scale, parallax, the parsec, and Cepheid distances
... Typically magnitudes are measured through a specific filter or bandpass Filters only allow light from a specifice wavelength range through Examples are ugriz or BVRI in the op;cal or YJHK in the near-‐IR ...
... Typically magnitudes are measured through a specific filter or bandpass Filters only allow light from a specifice wavelength range through Examples are ugriz or BVRI in the op;cal or YJHK in the near-‐IR ...
6. 1 Star Distances 6. 2 Apparent Brightness, Intrinsic Brightness
... star system in which the stars are too close together to be visible separately. We see a single point of light, and only by taking a spectrum can we determine that there are two stars. ...
... star system in which the stars are too close together to be visible separately. We see a single point of light, and only by taking a spectrum can we determine that there are two stars. ...
01 - Ionia Public Schools
... 11. What is important about the onset of fusion? _______________________________________________________________ _______________________________________________________________ 12. What happens as gravity increases the pressure on the matter within a star? ___________________________________________ ...
... 11. What is important about the onset of fusion? _______________________________________________________________ _______________________________________________________________ 12. What happens as gravity increases the pressure on the matter within a star? ___________________________________________ ...
Sydney Observatory night sky map June 2014
... June evenings are great for seeing the brightest part of the Milky Way high overhead. June 21st is the shortest day of the year (winter solstice; 9 hours and 48 minutes of daylight) when the Sun is at its most northerly position in the sky. Saturn is located towards the east in Libra. Mars can be se ...
... June evenings are great for seeing the brightest part of the Milky Way high overhead. June 21st is the shortest day of the year (winter solstice; 9 hours and 48 minutes of daylight) when the Sun is at its most northerly position in the sky. Saturn is located towards the east in Libra. Mars can be se ...
Slide 1 - Beverley High School
... • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
... • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
Life Cycle of a Star worksheet
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
... Learning Goal: I can describe the life cycle of various types of stars. All stars start as a ______________. A ______________ is a large cloud of gas and dust. Gravity can pull some of the gas and dust in a nebula together. The contracting cloud is then called a ___________. A protostar is the earli ...
Early Spring Observing – Millstone News Night Sky
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
... The Beehive contains a larger star population than most other nearby clusters. Under dark skies the Beehive Cluster looks like a nebulous object to the naked eye; thus it has been known since ancient times. We often find it, rather than the constellation it is found in (Cancer). From Wikipedia: The ...
Photometry
... The number of photons observed can be converted into an apparent magnitude (m), which is simply a measure of how bright the stars look from Earth. The smaller the number, the brighter the star. Each color has a different apparent magnitude. (This simply means that some stars appear brighter in, say, ...
... The number of photons observed can be converted into an apparent magnitude (m), which is simply a measure of how bright the stars look from Earth. The smaller the number, the brighter the star. Each color has a different apparent magnitude. (This simply means that some stars appear brighter in, say, ...
Issue 122 - Aug 2014
... exoplanets. yet only two stars brighter than third magnitude. The brightest star (Kornephoros or Beta Herculis) is a G-type (yellow, 4,900K) giant star that has used up the hydrogen in its core and is dying. With a mass is ~3 times that of the Sun and a diameter ~17 times that of the Sun, it is ~15 ...
... exoplanets. yet only two stars brighter than third magnitude. The brightest star (Kornephoros or Beta Herculis) is a G-type (yellow, 4,900K) giant star that has used up the hydrogen in its core and is dying. With a mass is ~3 times that of the Sun and a diameter ~17 times that of the Sun, it is ~15 ...
Solutions
... of these Galaxies. Comment on what this says about how often you might expect to see galaxy/galaxy collisions in the Universe compared to star/star collisions in our Galaxy. (For the size of our Galaxy and the distance to the Andromeda Galaxy, refer to the Reading Assignment from September 17.) The ...
... of these Galaxies. Comment on what this says about how often you might expect to see galaxy/galaxy collisions in the Universe compared to star/star collisions in our Galaxy. (For the size of our Galaxy and the distance to the Andromeda Galaxy, refer to the Reading Assignment from September 17.) The ...
Chapter 18 Notes - Valdosta State University
... Most galaxies are thought to have a super massive black hole at the center. That would explain the high velocities of stars orbiting near the center, the tremendous energy generated by the core and the shape of most galaxies. The most distant objects detected in the universe are called quasars (qua ...
... Most galaxies are thought to have a super massive black hole at the center. That would explain the high velocities of stars orbiting near the center, the tremendous energy generated by the core and the shape of most galaxies. The most distant objects detected in the universe are called quasars (qua ...
Lecture10
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distances ...
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distances ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.