Lecture 33: The Lives of Stars Astronomy 141
... The more massive a star is, the shorter its lifetime. Low-Mass stars are long-lived, spend some time as Red Giants, then leave behind a White Dwarf. Very high-mass stars have very short lives, spend a short time as red supergiants, then explode as a supernova. ...
... The more massive a star is, the shorter its lifetime. Low-Mass stars are long-lived, spend some time as Red Giants, then leave behind a White Dwarf. Very high-mass stars have very short lives, spend a short time as red supergiants, then explode as a supernova. ...
Today`s Powerpoint
... When a cloud starts to collapse, it should fragment. Fragments then collapse on their own, fragmenting further. End product is 100’s or 1000’s of dense clumps each destined to form star, binary star, etc. Hence a cloud gives birth to a cluster of stars. ...
... When a cloud starts to collapse, it should fragment. Fragments then collapse on their own, fragmenting further. End product is 100’s or 1000’s of dense clumps each destined to form star, binary star, etc. Hence a cloud gives birth to a cluster of stars. ...
Stars
... supernova is carried off by neutrinos, for SN1987A this was 1046 Watts. • Roughly 1013 neutrinos from this supernova passed through your body on Feb 24, 1987. • Neutrinos interact so weakly with matter that only about one dozen neutrinos were measured at the world’s largest neutrino detectors. Davis ...
... supernova is carried off by neutrinos, for SN1987A this was 1046 Watts. • Roughly 1013 neutrinos from this supernova passed through your body on Feb 24, 1987. • Neutrinos interact so weakly with matter that only about one dozen neutrinos were measured at the world’s largest neutrino detectors. Davis ...
Stars and Constellations
... The Spring Sky. The spring sky contains the best-known of all the constellations: the Big Dipper, also known as Ursa Major, the big bear. It can be seen all night because it does not rise or set. The spring sky is not as spectacular as the winter sky. Locate the Big Dipper. How many stars are in the ...
... The Spring Sky. The spring sky contains the best-known of all the constellations: the Big Dipper, also known as Ursa Major, the big bear. It can be seen all night because it does not rise or set. The spring sky is not as spectacular as the winter sky. Locate the Big Dipper. How many stars are in the ...
ASTR-1020: Astronomy II Course Lecture Notes Section III
... Example III–7. We measure the trigonometric parallax of a visual binary star as 0.20 arcsec and measure an angular separation between the pair of stars in this binary as 5 arcsec. Over a few years of observations, we determine the orbital period of this pair to be 30 years. What is the combined mass ...
... Example III–7. We measure the trigonometric parallax of a visual binary star as 0.20 arcsec and measure an angular separation between the pair of stars in this binary as 5 arcsec. Over a few years of observations, we determine the orbital period of this pair to be 30 years. What is the combined mass ...
Integrative Studies 410 Our Place in the Universe
... – Assumed all stars have the same absolute brightness – Counts stars as a function of apparent magnitude – Brighter stars closer to us; fainter stars further away – Cut off in brightness corresponds to a cut off at a certain distance. ...
... – Assumed all stars have the same absolute brightness – Counts stars as a function of apparent magnitude – Brighter stars closer to us; fainter stars further away – Cut off in brightness corresponds to a cut off at a certain distance. ...
Study Guide for 3RD Astronomy Exam
... Write or identify the definition of the stellar motion term “Proper Motion” Describe or identify types of binary stars. State or identify what additional information can be obtained from and eclipsing binaries besides the combined mass of the stars. Properly label the axes of an HR diagram and ident ...
... Write or identify the definition of the stellar motion term “Proper Motion” Describe or identify types of binary stars. State or identify what additional information can be obtained from and eclipsing binaries besides the combined mass of the stars. Properly label the axes of an HR diagram and ident ...
The Changing Heavens Over Time Key Commands Constellations
... 1. Go back to January 1, 2000. Find Polaris in Ursa Minor. Click on it and hit the space bar to center it. 2. Hit e. This turns on the equatorial grid. The location where all the lines converge sits directly above the Earth’s North Pole axis. Zoom in a bit. You can see that Polaris is close, but not ...
... 1. Go back to January 1, 2000. Find Polaris in Ursa Minor. Click on it and hit the space bar to center it. 2. Hit e. This turns on the equatorial grid. The location where all the lines converge sits directly above the Earth’s North Pole axis. Zoom in a bit. You can see that Polaris is close, but not ...
Star Classification - University of Louisville
... An old Blue-white star becomes a Supergiant. They expand, just like average-sized stars expand to become Giant stars. Because they are beginning to run out of hydrogen, they cool down and glow a more orangey color. A star called Betelguese is extremely old, but also extremely big. In fact, it is 500 ...
... An old Blue-white star becomes a Supergiant. They expand, just like average-sized stars expand to become Giant stars. Because they are beginning to run out of hydrogen, they cool down and glow a more orangey color. A star called Betelguese is extremely old, but also extremely big. In fact, it is 500 ...
WHERE DO WE SEARCH FOR LIFE IN THE UNIVERSE?
... If we eliminate all stars that have a luminosity that is less than 1% of the Sun’s, then we eliminate nearly 75% of all stars in the Milky Way! ...
... If we eliminate all stars that have a luminosity that is less than 1% of the Sun’s, then we eliminate nearly 75% of all stars in the Milky Way! ...
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.