Lecture 2 ppt - Physics 1025 Introductory Astronomy
... • declination (dec) – Analogous to latitude, but on the celestial sphere; it is the angular north-south distance between the celestial equator and a location on the celestial sphere. – Measured in degrees: » 0 ° to 90 ° – north from celestial equator » 0 ° to -90 ° – south from celestial equator ...
... • declination (dec) – Analogous to latitude, but on the celestial sphere; it is the angular north-south distance between the celestial equator and a location on the celestial sphere. – Measured in degrees: » 0 ° to 90 ° – north from celestial equator » 0 ° to -90 ° – south from celestial equator ...
Stars change over their life cycles.
... Like our Sun, all stars are huge balls of glowing gas that produce or have produced energy by fusion. However, stars differ in size, brightness, and temperature. Some stars are smaller, fainter, and cooler than the Sun. Others are much bigger, brighter, and hotter. Stars look like small points of li ...
... Like our Sun, all stars are huge balls of glowing gas that produce or have produced energy by fusion. However, stars differ in size, brightness, and temperature. Some stars are smaller, fainter, and cooler than the Sun. Others are much bigger, brighter, and hotter. Stars look like small points of li ...
13.1 Introduction 13.2 The Red Giant Branch
... C is further processed into 16 O via capture of an alpha particle (see Lecture 7.4.3). This is the onset of the helium burning phase of evolution. Unlike H-burning, the reactions involved in He-burning (Lecture 7.4.3) are the same for all stellar masses. However, the conditions in the core at the ig ...
... C is further processed into 16 O via capture of an alpha particle (see Lecture 7.4.3). This is the onset of the helium burning phase of evolution. Unlike H-burning, the reactions involved in He-burning (Lecture 7.4.3) are the same for all stellar masses. However, the conditions in the core at the ig ...
10 New Constellations
... Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 light ...
... Also known as Alpha Persei, Mirfak is located around 500 light years from Earth and is the brightest star in the constellation, it's a white supergiant with a diameter around 30 times larger than the sun. Algol Also known as Beta Persei, Algol is actually a three star system located around 90 light ...
PHYSICS – Astrophysics Section I
... of the Moon. Galileo saw that the Moon was not perfect and unchanging as was the prevailing Aristotelian view, but in fact had a very rough surface. He observed the “seas” and mountains on the surface of the Moon as well as craters. These observations blatantly contradicted the Church’s Aristotelian ...
... of the Moon. Galileo saw that the Moon was not perfect and unchanging as was the prevailing Aristotelian view, but in fact had a very rough surface. He observed the “seas” and mountains on the surface of the Moon as well as craters. These observations blatantly contradicted the Church’s Aristotelian ...
Student Exploration Sheet: Growing Plants
... Gizmo Warm-up In the early 1900s, astronomers were able to identify many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. However, astronomers did not yet understand exactly how these characteristics were related. Using the H-R Diagram Gizmo™, you will d ...
... Gizmo Warm-up In the early 1900s, astronomers were able to identify many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. However, astronomers did not yet understand exactly how these characteristics were related. Using the H-R Diagram Gizmo™, you will d ...
Likely formation of general relativistic radiation pressure supported
... of masses as large as ∼ 100M⊙ . Further, there are interstellar gas clouds of mass probably as large as ∼ 106 M⊙ . The reason behind the existence of non-singular cosmic objects with such higher masses is that they are not supported by cold quantum pressure alone. On the other hand, they are support ...
... of masses as large as ∼ 100M⊙ . Further, there are interstellar gas clouds of mass probably as large as ∼ 106 M⊙ . The reason behind the existence of non-singular cosmic objects with such higher masses is that they are not supported by cold quantum pressure alone. On the other hand, they are support ...
BAS Visit to the Norman Lockyer Observatory, October 2015
... variable star that serves as a prototype for an entire class of variables, the Mira variables. There are between 6,000 to 7,000 known stars belonging to this group. They are all red giants whose surfaces oscillate in such a way as to cause variations in brightness over periods ranging from 80 to 1,0 ...
... variable star that serves as a prototype for an entire class of variables, the Mira variables. There are between 6,000 to 7,000 known stars belonging to this group. They are all red giants whose surfaces oscillate in such a way as to cause variations in brightness over periods ranging from 80 to 1,0 ...
• This chapter concentrates on five goals:
... • Two, in the surface layers of stars hotter than about 20,000 K, there are many violent collisions between atoms. • These excite electrons to high energy levels or knock the electrons completely out of most atoms—so they become ionized. – In this case, few hydrogen atoms will have electrons in the ...
... • Two, in the surface layers of stars hotter than about 20,000 K, there are many violent collisions between atoms. • These excite electrons to high energy levels or knock the electrons completely out of most atoms—so they become ionized. – In this case, few hydrogen atoms will have electrons in the ...