Slide 1 - Personal.psu.edu
... Summary of Chapter 19 (cont.) • The protostar continues to collapse; when the core is dense and hot enough, fusion begins • The star continues to collapse until the inward force of gravity is balanced by the outward pressure from the core. The star is now on the Main Sequence • More massive stars f ...
... Summary of Chapter 19 (cont.) • The protostar continues to collapse; when the core is dense and hot enough, fusion begins • The star continues to collapse until the inward force of gravity is balanced by the outward pressure from the core. The star is now on the Main Sequence • More massive stars f ...
Diffuse Ultraviolet Emission in Galaxies
... of UV radiation each star produces. We focused on the hottest, most massive stars, which are the only ones capable of producing large amounts of UV radiation. We divided these stars into two groups, using their traditional names: “O-type” stars, with initial masses >20 Msun and lifespans < 5 Myr, a ...
... of UV radiation each star produces. We focused on the hottest, most massive stars, which are the only ones capable of producing large amounts of UV radiation. We divided these stars into two groups, using their traditional names: “O-type” stars, with initial masses >20 Msun and lifespans < 5 Myr, a ...
Part 1
... Stellar Masses • Mass is the primary characteristic – determines luminosity, temperature, lifetime ...
... Stellar Masses • Mass is the primary characteristic – determines luminosity, temperature, lifetime ...
Lecture 13 - Main Sequence Stars
... • The idea of the “Vogt-Russell” theorem for stars is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is e ...
... • The idea of the “Vogt-Russell” theorem for stars is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is e ...
Lec9_2D
... further. (Remember, they’re not allowed to get any closer to the nucleus than their first orbital.) The star becomes supported by electron degeneracy, and will just sit there and slowly cool for the rest of eternity. It is a white dwarf. • As the star slowly cools, it will begin to crystallize. It’s ...
... further. (Remember, they’re not allowed to get any closer to the nucleus than their first orbital.) The star becomes supported by electron degeneracy, and will just sit there and slowly cool for the rest of eternity. It is a white dwarf. • As the star slowly cools, it will begin to crystallize. It’s ...
March 2017 - Shasta Astronomy Club
... that is constantly under development. Phylogenetic trees add an extra dimension to our endeavours which is why this approach is so special. The branches of the tree serve to inform us about the stars’ shared history,” she says. The team picked 22 stars, including the Sun, to study. The chemical elem ...
... that is constantly under development. Phylogenetic trees add an extra dimension to our endeavours which is why this approach is so special. The branches of the tree serve to inform us about the stars’ shared history,” she says. The team picked 22 stars, including the Sun, to study. The chemical elem ...
HR Diagram Lab
... 1. What would you tell someone who thinks that all stars are very similar (be sure to discuss temperature and brightness)? 2. How does our sun compare to other stars in brightness and temperature? 3. Are the stars scattered randomly on the graph, or is there a pattern? Explain. 4. Would you expect h ...
... 1. What would you tell someone who thinks that all stars are very similar (be sure to discuss temperature and brightness)? 2. How does our sun compare to other stars in brightness and temperature? 3. Are the stars scattered randomly on the graph, or is there a pattern? Explain. 4. Would you expect h ...
Unit 1
... appears to run slow, and the ship looks shorter – To an observer on the ship, the Earth appears to be moving in slow-motion, and its shape is distorted. ...
... appears to run slow, and the ship looks shorter – To an observer on the ship, the Earth appears to be moving in slow-motion, and its shape is distorted. ...
13 Space Photos To Remind You The Universe Is
... In death, the star’s dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core. Planetary nebulae (like the Helix Nebula above) are actually the remains of stars that once looked a lot like our sun. These stars spend most of ...
... In death, the star’s dusty outer layers are unraveling into space, glowing from the intense ultraviolet radiation being pumped out by the hot stellar core. Planetary nebulae (like the Helix Nebula above) are actually the remains of stars that once looked a lot like our sun. These stars spend most of ...
Slide 1
... is hot enough for fusion reactions to occur and a star is born. 5. Material further out in the disc clumps together to form planets ...
... is hot enough for fusion reactions to occur and a star is born. 5. Material further out in the disc clumps together to form planets ...
A Sense of Scale - Young Scientists Journal
... dense something can be before collapsing into a black hole. If all of humanity were compacted to the size of a sugar cube, this would have the approximate density of a neutron star.[6] Most stars, however, are significantly bigger than this; even dwarf stars, assumed to be small, can have a diameter ...
... dense something can be before collapsing into a black hole. If all of humanity were compacted to the size of a sugar cube, this would have the approximate density of a neutron star.[6] Most stars, however, are significantly bigger than this; even dwarf stars, assumed to be small, can have a diameter ...
The “Life” of Non-living Stars - Etiwanda E
... Hydrogen continues to fuse into helium Size of star changes very little during this stage ...
... Hydrogen continues to fuse into helium Size of star changes very little during this stage ...
The Sky from Your Point of View
... If you could see stars during the day, this is what the sky would look like at noon on a given day. The Sun is near the stars of the constellation Gemini. Near which constellation would you expect the Sun to be located at sunset? A. Leo B. Cancer C. Gemini D. Taurus E. Pisces ...
... If you could see stars during the day, this is what the sky would look like at noon on a given day. The Sun is near the stars of the constellation Gemini. Near which constellation would you expect the Sun to be located at sunset? A. Leo B. Cancer C. Gemini D. Taurus E. Pisces ...
docx - STAO
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
... When you gaze up in the night sky some stars will be very bright while other stars are barely visible to the unaided eye. With the aid of binoculars you may be able to observe different colours in the stars. The brightness and colour of a star depends on three factors: temperature, distance, and siz ...
WHERE DO WE SEARCH FOR LIFE IN THE UNIVERSE?
... Consider Stellar Luminosity (not too high, not to low) Consider Stellar Mass (not to high, not too ...
... Consider Stellar Luminosity (not too high, not to low) Consider Stellar Mass (not to high, not too ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.