Build your own Galaxy - McDonald Observatory
... On a grander scale is the Andromeda galaxy, a mere 2.5 million light-years from our galaxy. That sounds like a long distance, but compared to the size of the Milky Way, Andromeda is a close neighbor. If you made a second galaxy model representing Andromeda, and placed it about 25 Milky Way diameters ...
... On a grander scale is the Andromeda galaxy, a mere 2.5 million light-years from our galaxy. That sounds like a long distance, but compared to the size of the Milky Way, Andromeda is a close neighbor. If you made a second galaxy model representing Andromeda, and placed it about 25 Milky Way diameters ...
Elements from Stardust
... than the sun. • These stars are large enough to produce heavier elements like Magnesium and Silicon. • In Massive stars, fusion continues until the core is almost all iron. ...
... than the sun. • These stars are large enough to produce heavier elements like Magnesium and Silicon. • In Massive stars, fusion continues until the core is almost all iron. ...
Futuro da Ci^encia no IAG
... -High mass stars explode as supernovae and produce a GRBs (z ~ 15 ?) GRB at z~8.2 = pop. III? -First generations of low mass stars should be still evolving, identified by a very low metallicity (or no metals) (z ~ 5 to 15) ...
... -High mass stars explode as supernovae and produce a GRBs (z ~ 15 ?) GRB at z~8.2 = pop. III? -First generations of low mass stars should be still evolving, identified by a very low metallicity (or no metals) (z ~ 5 to 15) ...
Exercise 9
... sequence stars, like the Sun, are class V, whereas supergiants are class IA or IB. Building the basic model A. Select a base. We’ll start with the bases with labels printed in black. Note the coordinates and note the name and stellar spectral type of the star. The Sun is set up as an example. B. Usi ...
... sequence stars, like the Sun, are class V, whereas supergiants are class IA or IB. Building the basic model A. Select a base. We’ll start with the bases with labels printed in black. Note the coordinates and note the name and stellar spectral type of the star. The Sun is set up as an example. B. Usi ...
Deep Space Mystery Note Form 3
... In these systems supernovas occur also. Stars up to eight times the mass of our sun usually evolve into white dwarfs. A star that is condensed to this size has a very strong gravitational pull. With that gravity, if the second star is close enough, it can pull material from there. White dw ...
... In these systems supernovas occur also. Stars up to eight times the mass of our sun usually evolve into white dwarfs. A star that is condensed to this size has a very strong gravitational pull. With that gravity, if the second star is close enough, it can pull material from there. White dw ...
Unit 4: Astronomy
... 3) Describe the magnitude scale used to classify stars by their brightness. 4) Describe the difference between “apparent magnitude” and “absolute magnitude”. 5) Describe two factors that affect how bright a star appears when seen from Earth. ...
... 3) Describe the magnitude scale used to classify stars by their brightness. 4) Describe the difference between “apparent magnitude” and “absolute magnitude”. 5) Describe two factors that affect how bright a star appears when seen from Earth. ...
docx - STAO
... You could also use a photometer to record the quantity of light (in W/m2) being gathered from the different luminous or reflective objects. ...
... You could also use a photometer to record the quantity of light (in W/m2) being gathered from the different luminous or reflective objects. ...
2011 Exam Review
... a. A dented ping pong ball can sometimes be “repaired” by placing it in cup of hot water. b. When heated, the alloy used as solder was softer and more ductile than at colder temperatures. 4. a) State three physical properties of ethanol. b) State one chemical property of ethanol. 5. A student found ...
... a. A dented ping pong ball can sometimes be “repaired” by placing it in cup of hot water. b. When heated, the alloy used as solder was softer and more ductile than at colder temperatures. 4. a) State three physical properties of ethanol. b) State one chemical property of ethanol. 5. A student found ...
Teacher Demo: Bright Star or Close Star?
... You could also use a photometer to record the quantity of light (in W/m2) being gathered from the different luminous or reflective objects. ...
... You could also use a photometer to record the quantity of light (in W/m2) being gathered from the different luminous or reflective objects. ...
Lecture 23 Slides
... • Argon-40 does not combine with other elements into solids and does not condense in the protosolar nebula • If we see 40Ar “trapped” inside a rock, we know that it started out as 40K and decayed into 40Ar. This is why this only works for solids - after the decay, the 40Ar has to be trapped in place ...
... • Argon-40 does not combine with other elements into solids and does not condense in the protosolar nebula • If we see 40Ar “trapped” inside a rock, we know that it started out as 40K and decayed into 40Ar. This is why this only works for solids - after the decay, the 40Ar has to be trapped in place ...
Lecture
... – O star: ~ 1 million years – G star (Sun): ~ 10 billion years – M star : ~ 5,000 billion years ...
... – O star: ~ 1 million years – G star (Sun): ~ 10 billion years – M star : ~ 5,000 billion years ...
No Slide Title
... are really three stars all orbiting each other. One of these stars Proxima Centauri is the closest star to Earth next to our sun. There are many kinds of stars, big and small, close and far, bright and dim, some even change in brightness in a matter of hours (these are called pulsating stars). When ...
... are really three stars all orbiting each other. One of these stars Proxima Centauri is the closest star to Earth next to our sun. There are many kinds of stars, big and small, close and far, bright and dim, some even change in brightness in a matter of hours (these are called pulsating stars). When ...
Surveys of Stars, The interstellar medium
... appear to obey a Mass-Luminosity relation: L M3.5 For example, if the mass of a star is doubled, its luminosity increases by a factor 23.5 ~ 11. Thus, stars like Sirius that are about twice as massive as the Sun are about 11 times as luminous. The more massive a Main Sequence star is, the hotter ( ...
... appear to obey a Mass-Luminosity relation: L M3.5 For example, if the mass of a star is doubled, its luminosity increases by a factor 23.5 ~ 11. Thus, stars like Sirius that are about twice as massive as the Sun are about 11 times as luminous. The more massive a Main Sequence star is, the hotter ( ...
Chapter 13 The Life of a Star The Life of a Star Mass Is the Key The
... achieved and helium fusion occurs at about 100 million K – This fusion is referred to as the triple alpha process – Fusion of helium proceeds smoothly for a high-mass star since its core’s pressure and temperature are high to begin with – A low-mass star must compress its core to such an extent that ...
... achieved and helium fusion occurs at about 100 million K – This fusion is referred to as the triple alpha process – Fusion of helium proceeds smoothly for a high-mass star since its core’s pressure and temperature are high to begin with – A low-mass star must compress its core to such an extent that ...
Chapter 13
... supernova explosion sweeping up interstellar material as it goes is called a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other ...
... supernova explosion sweeping up interstellar material as it goes is called a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other ...
1. How old is our sun now? How does its present luminosity
... (a) A neutron star (in the form of a pulsar). (A star must be over 25 M to form a black hole.) (b) The neutron star is formed when the star explodes as a supernova (Type II). (c) Supernovae are important for the heavy elements they return to the interstellar medium, which are needed to make planets ...
... (a) A neutron star (in the form of a pulsar). (A star must be over 25 M to form a black hole.) (b) The neutron star is formed when the star explodes as a supernova (Type II). (c) Supernovae are important for the heavy elements they return to the interstellar medium, which are needed to make planets ...
Hubble`s Constant - Scientific Research Publishing
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
... some definite past time; in such a way that the expansion rate determines the age of the Universe. Hubble’s constant measures how fast is the process of the expansion, and it is involved in Hubble’s law. The larger the Hubble’s constant, the faster the expansion rate. Also, Hubble’s constant is a me ...
Jeopardy 2015
... Type G2 star, middle of HR diagram-average size and luminosity, end of life will be white dwarf, only known star to support a planet with life. Why is our star (the sun) frequently referred to as an “average” star? Compare the important physical characteristics of the Sun with the most common types ...
... Type G2 star, middle of HR diagram-average size and luminosity, end of life will be white dwarf, only known star to support a planet with life. Why is our star (the sun) frequently referred to as an “average” star? Compare the important physical characteristics of the Sun with the most common types ...
Life Cycle of Star Pictures
... Our Sun is an average star that formed from a nebula. It produces its own heat and light by nuclear reactions. They live for billions of years before becoming a red giant. ...
... Our Sun is an average star that formed from a nebula. It produces its own heat and light by nuclear reactions. They live for billions of years before becoming a red giant. ...