Aging nearby spiral galaxies using H
... » Hα caused by stars M > 10M: · High temperature = UV photons · large mass = short lifetime Red: UV (1500Ǻ) Blue: Optical H-α (6563Ǻ) image of M51 (GALEX) ...
... » Hα caused by stars M > 10M: · High temperature = UV photons · large mass = short lifetime Red: UV (1500Ǻ) Blue: Optical H-α (6563Ǻ) image of M51 (GALEX) ...
Lec8_2D
... happen in most stars.) Convection: hot material is mixed into cooler material. (This only happens in the outermost layers of some stars like the Sun.) Radiation: blackbody law photons are emitted, then absorbed by cooler material Energy is transported via the random walk of photons. In the Sun, ...
... happen in most stars.) Convection: hot material is mixed into cooler material. (This only happens in the outermost layers of some stars like the Sun.) Radiation: blackbody law photons are emitted, then absorbed by cooler material Energy is transported via the random walk of photons. In the Sun, ...
Finding Black Holes
... massive dark companion – a black hole! [This work was done at the David Dunlap Observatory, in Richmond Hill, just north of Toronto when I was a grad student there.] ...
... massive dark companion – a black hole! [This work was done at the David Dunlap Observatory, in Richmond Hill, just north of Toronto when I was a grad student there.] ...
Finding Black Holes Left Behind by Single Stars
... and then a return to dimmer levels. This draws our attention to the phenomenon. [This is probably exactly the opposite of what you expected. In some ways, it is the inverse of an eclipse!] ...
... and then a return to dimmer levels. This draws our attention to the phenomenon. [This is probably exactly the opposite of what you expected. In some ways, it is the inverse of an eclipse!] ...
“Contact” Movie Notes
... Just before Ellie is dropped out of the machine, she sees a group of shiny lights shooting across the sky. What do you think this could be? _________________________________________________________________________ ...
... Just before Ellie is dropped out of the machine, she sees a group of shiny lights shooting across the sky. What do you think this could be? _________________________________________________________________________ ...
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 ...
stargazing - davis.k12.ut.us
... constellations can be used as reference points. Sailors used them to help guide their ships at night. AfricanAmericans fleeing slavery sought what they called the Drinking Gourd, or Big Dipper, found near the North Star, as a guide to freedom. Pioneers migrating west used constellations as a guide w ...
... constellations can be used as reference points. Sailors used them to help guide their ships at night. AfricanAmericans fleeing slavery sought what they called the Drinking Gourd, or Big Dipper, found near the North Star, as a guide to freedom. Pioneers migrating west used constellations as a guide w ...
Extra-Solar Planets
... size of this zone depends on the luminosity of the star: the brighter the star, the larger the zone. Note that this assumes solar heating. As we have seen, there are other ways of heating a planet. (For example, Europa is heated by tides, and perhaps could have life in its oceans.) ...
... size of this zone depends on the luminosity of the star: the brighter the star, the larger the zone. Note that this assumes solar heating. As we have seen, there are other ways of heating a planet. (For example, Europa is heated by tides, and perhaps could have life in its oceans.) ...
Spiral Elliptical Irregular - SMS 8th Grade Astronomy Unit
... We are __________________ million miles away from the sun This is called an Astronomical Unit (AU) (it would take a jet 17 years to travel this far!) Pluto is 39 AU from the sun…How many miles is that? _____________________ Anything farther than objects in our solar system has to be measured in ligh ...
... We are __________________ million miles away from the sun This is called an Astronomical Unit (AU) (it would take a jet 17 years to travel this far!) Pluto is 39 AU from the sun…How many miles is that? _____________________ Anything farther than objects in our solar system has to be measured in ligh ...
Nov13Guide - East-View
... clear moonless night it is possible to see this galaxy with the unaided eye. When you do find it, reflect on the fact that the light which you are seeing has taken 2.5 million years to reach ...
... clear moonless night it is possible to see this galaxy with the unaided eye. When you do find it, reflect on the fact that the light which you are seeing has taken 2.5 million years to reach ...
Young Stars
... •Light stars much more common than heavy ones •Objects lighter than 0.08 MSun are called Brown brown Dwarf dwarfs ...
... •Light stars much more common than heavy ones •Objects lighter than 0.08 MSun are called Brown brown Dwarf dwarfs ...
Starry Night¨ Times - October 2008
... Orion Nebula. Although it is 1500 lightyears away, M42 is a great target to view in small telescopes. This is due not only to its brightness, but also to its wonderful cloud structure, which in telescopes takes on a clearly three-dimensional shape. Observers new and old come back to M42 time and tim ...
... Orion Nebula. Although it is 1500 lightyears away, M42 is a great target to view in small telescopes. This is due not only to its brightness, but also to its wonderful cloud structure, which in telescopes takes on a clearly three-dimensional shape. Observers new and old come back to M42 time and tim ...
2-2 wkst - Home [www.petoskeyschools.org]
... ____________ 25. stars in the band that runs along the middle of the H-R diagram 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter ...
... ____________ 25. stars in the band that runs along the middle of the H-R diagram 26. Which one of the following statements is NOT true of supernovas? a. They are explosions in which a massive star collapses. b. They are explosions that occur at the beginning of a star’s life. c. They can be brighter ...
Nitrogen abundances in solar
... Work focus: non-LTE line formation, quantitative analysis Solar-type stars are valuable tracers of the chemical evolution of the Milky Way over cosmic history because of their longevity. They are numerous, accessible at high spectral resolution out to distances of several kpc with large telescopes, ...
... Work focus: non-LTE line formation, quantitative analysis Solar-type stars are valuable tracers of the chemical evolution of the Milky Way over cosmic history because of their longevity. They are numerous, accessible at high spectral resolution out to distances of several kpc with large telescopes, ...
Study Guide for 3RD Astronomy Exam
... mechanism of energy production in that stage. Identify on an HR diagram the stage of the Sun’s evolution and its mechanism of energy production. List in chronological order the mechanisms of energy production in Sun-like stars. List in chronological order the stages of evolution in Sunlike stars. De ...
... mechanism of energy production in that stage. Identify on an HR diagram the stage of the Sun’s evolution and its mechanism of energy production. List in chronological order the mechanisms of energy production in Sun-like stars. List in chronological order the stages of evolution in Sunlike stars. De ...
Lab 2: The Planisphere
... distortion, constellations in the sky will not appear as they do on the planisphere, but the planisphere can help us identify bright stars and give us a general idea of where to look for other stars. It's also very useful in figuring out when certain star will rise or set. The best way to get comfor ...
... distortion, constellations in the sky will not appear as they do on the planisphere, but the planisphere can help us identify bright stars and give us a general idea of where to look for other stars. It's also very useful in figuring out when certain star will rise or set. The best way to get comfor ...
Lecture 31 - 2 The Death of Stars: Stellar Recycling Phase 3 -
... to these radii are completely vaporized while planets further out are vaporized except for rocky cores. • despite higher luminosity, the much larger surface area actually results in a decreased surface temperature for the giant star (i.e. it becomes redder than it was when it was on the main sequenc ...
... to these radii are completely vaporized while planets further out are vaporized except for rocky cores. • despite higher luminosity, the much larger surface area actually results in a decreased surface temperature for the giant star (i.e. it becomes redder than it was when it was on the main sequenc ...
How is a Star`s Color Related to Its temperature?
... On a clear night you have surely noticed that some stars are brighter than cthers. But stars also have different colors. Rigel is blue. and Betelgense is red. Capella and ore" Sun are yellow, in this activity you will make your own Hertzsprung-Russell diagram. You will see how star brightness, color ...
... On a clear night you have surely noticed that some stars are brighter than cthers. But stars also have different colors. Rigel is blue. and Betelgense is red. Capella and ore" Sun are yellow, in this activity you will make your own Hertzsprung-Russell diagram. You will see how star brightness, color ...
Chapter #10 Question #27: (c) Four individual protons. During
... (a) They are cooler than their surroundings. Sunspots occur where the magnetic field lines loop out of the solar interior. These magnetic field lines suppress convection within the sunspot from occurring. As a result, the hot plasma is unable to enter the region. The sunspot plasma is cooler than th ...
... (a) They are cooler than their surroundings. Sunspots occur where the magnetic field lines loop out of the solar interior. These magnetic field lines suppress convection within the sunspot from occurring. As a result, the hot plasma is unable to enter the region. The sunspot plasma is cooler than th ...
GEARS Workshop Monday - Georgia Southern University
... our own Sun, have found a remarkable object where the nuclear reactor that once powered it has only just shut down. This star, the hottest known white dwarf, H1504+65, seems to have been stripped of its entire outer regions during its death throes leaving behind the core that formed its power plant. ...
... our own Sun, have found a remarkable object where the nuclear reactor that once powered it has only just shut down. This star, the hottest known white dwarf, H1504+65, seems to have been stripped of its entire outer regions during its death throes leaving behind the core that formed its power plant. ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.