Other Facets of Giant Branch Evolution • As the envelope cools due
... • As the envelope cools due to expansion, the opacity in the envelope increases (due to Kramers law), so by the time the star reaches the base of the giant branch (point 5), convection dominates energy transport. The thermal energy trapped by this opacity causes the star to further expand. (Note: th ...
... • As the envelope cools due to expansion, the opacity in the envelope increases (due to Kramers law), so by the time the star reaches the base of the giant branch (point 5), convection dominates energy transport. The thermal energy trapped by this opacity causes the star to further expand. (Note: th ...
Star Maps and Constellations
... Most of the bright star have individual names. The names are often related to the part of the "picture". •Alhena in Gemini means "mark", pertaining to a mark on the foot of Gemini twin Pollux. ...
... Most of the bright star have individual names. The names are often related to the part of the "picture". •Alhena in Gemini means "mark", pertaining to a mark on the foot of Gemini twin Pollux. ...
New Worlds - Universiteit Leiden
... The discovery of the planet around 51 Pegasi resulted in a flood of new exoplanet detections. Now, a decade later, some 300 exoplanets have been discovered and it is one of the fastest growing branches of astronomy. One of these 300 exoplanets has just been discovered by a group of Leiden’s bachelor ...
... The discovery of the planet around 51 Pegasi resulted in a flood of new exoplanet detections. Now, a decade later, some 300 exoplanets have been discovered and it is one of the fastest growing branches of astronomy. One of these 300 exoplanets has just been discovered by a group of Leiden’s bachelor ...
Bolte_LRIS_08A
... The Dwarf galaxy Abundances and Radial-velocities Team (DART) project using the ESO VLT/FLAMES facility measured abundances for a large number of giants in the dSph galaxies Sculptor, Fornax, Sextans and Carina. Their results show that while there are large dSph-to-dSph differences in the metallicit ...
... The Dwarf galaxy Abundances and Radial-velocities Team (DART) project using the ESO VLT/FLAMES facility measured abundances for a large number of giants in the dSph galaxies Sculptor, Fornax, Sextans and Carina. Their results show that while there are large dSph-to-dSph differences in the metallicit ...
Dec 2017 - What`s Out Tonight?
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
Integrative Studies 410 Our Place in the Universe
... • Ellipticals with a bulge and thin disk, but no spiral arms ...
... • Ellipticals with a bulge and thin disk, but no spiral arms ...
Combining Practices with Core Ideas in the NGSS
... in the apparent brightness of the sun compared to other stars is due to their relative distances from Earth?” You could just ask them! Their achievement of the performance expectation would be measured by the extent to which their responses showed they understood the three lines of evidence from the ...
... in the apparent brightness of the sun compared to other stars is due to their relative distances from Earth?” You could just ask them! Their achievement of the performance expectation would be measured by the extent to which their responses showed they understood the three lines of evidence from the ...
File
... An electron can ONLY get to next higher level if given the exact amount of required energy. It will then drop back down to its original level, releasing the amount of energy it gained in the form of photons. ...
... An electron can ONLY get to next higher level if given the exact amount of required energy. It will then drop back down to its original level, releasing the amount of energy it gained in the form of photons. ...
Lecture Eleven (Powerpoint format)
... attempting at this very moment to measure the spacetime distortion produced by gravitational radiation. The strongest conceivable sources of gravitational radiation are coalescing binary black holes and neutron stars. Even with these incredibly intense and rare events, the expected signal is min ...
... attempting at this very moment to measure the spacetime distortion produced by gravitational radiation. The strongest conceivable sources of gravitational radiation are coalescing binary black holes and neutron stars. Even with these incredibly intense and rare events, the expected signal is min ...
Some observed properties of Dark Matter: a progress report on an
... • How common are systems like ours? • How do planetary systems form? • To date many planets have been detected indirectly • Direct detection: – Mass, radius, temperature, composition – ELT will provide large samples of mature giant planets in reflected light – Earth-like planets may be within reach ...
... • How common are systems like ours? • How do planetary systems form? • To date many planets have been detected indirectly • Direct detection: – Mass, radius, temperature, composition – ELT will provide large samples of mature giant planets in reflected light – Earth-like planets may be within reach ...
stars - acpsd
... These massive stars continue to exist by burning the heavier nuclides (magnesium, silicon, phosphorous et al) until they reach the heaviest nuclide that fusion can produce, iron. The iron rich cores of these massive stars can reach sizes equivalent to the Earth. The size of the surrounding shells bu ...
... These massive stars continue to exist by burning the heavier nuclides (magnesium, silicon, phosphorous et al) until they reach the heaviest nuclide that fusion can produce, iron. The iron rich cores of these massive stars can reach sizes equivalent to the Earth. The size of the surrounding shells bu ...
Galaxies - TeacherWeb
... • There are four main types of galaxies, spiral, elliptical, lenticular and irregular. • Spiral galaxies consist of a bulge, disk, and a halo. The disk includes new stars, planets, dust, and gas that all rotate around the center which is called the Galactic Center. The bulge consist of millions of o ...
... • There are four main types of galaxies, spiral, elliptical, lenticular and irregular. • Spiral galaxies consist of a bulge, disk, and a halo. The disk includes new stars, planets, dust, and gas that all rotate around the center which is called the Galactic Center. The bulge consist of millions of o ...
Miss Nevoral - Ms. Nevoral`s site
... rapidly expanded to immense size. In a very short time, all the matter and energy in the universe was formed. 13. According to the Big Bang Theory, how did the temperature of the universe change as the universe expanded? The universe cooled as it expanded. 14. What does COBE and WMAP stand for? COBE ...
... rapidly expanded to immense size. In a very short time, all the matter and energy in the universe was formed. 13. According to the Big Bang Theory, how did the temperature of the universe change as the universe expanded? The universe cooled as it expanded. 14. What does COBE and WMAP stand for? COBE ...
The COMPLETE Survey of Star-Forming Regions: Why, How & When
... Doug Johnstone (HIA, Canada) Naomi Ridge (UMASS/FCRAOCfA) Scott Schnee (CfA, PhD student) Mario Tafalla (OAS, Spain) Tom Wilson (MPIfR) ...
... Doug Johnstone (HIA, Canada) Naomi Ridge (UMASS/FCRAOCfA) Scott Schnee (CfA, PhD student) Mario Tafalla (OAS, Spain) Tom Wilson (MPIfR) ...
Sirius Astronomer - Orange County Astronomers
... dispute over what happened to the water that apparently was plentiful on Mars billions of years ago. Sinking into the ground may be one answer. Minerals least likely to dissolve in water, such as silica, hematite and gypsum, were found nearer the surface, while minerals of increasing solubility, su ...
... dispute over what happened to the water that apparently was plentiful on Mars billions of years ago. Sinking into the ground may be one answer. Minerals least likely to dissolve in water, such as silica, hematite and gypsum, were found nearer the surface, while minerals of increasing solubility, su ...
How is Light Made?
... • Hotter stars emit more light at all wavelengths through each unit area of its surface – luminosity is proportional to T4 ⇒ small increase in temperature makes a big increase in luminosity ...
... • Hotter stars emit more light at all wavelengths through each unit area of its surface – luminosity is proportional to T4 ⇒ small increase in temperature makes a big increase in luminosity ...
solutions - Las Cumbres Observatory
... uminosity remains mostly constant at about 1 LSun until about 10,000 Myr, when it abruptly and briefly increases to over 4500 times LSun. 2. Describe how the radius changes with time. R adius is mostly constant at about 1 RSun until about 10,000 Myr, when it abruptly and briefly increases t ...
... uminosity remains mostly constant at about 1 LSun until about 10,000 Myr, when it abruptly and briefly increases to over 4500 times LSun. 2. Describe how the radius changes with time. R adius is mostly constant at about 1 RSun until about 10,000 Myr, when it abruptly and briefly increases t ...
Tutor Marked Assignment
... (b) The estimated lifetime of the Sun on the main sequence is ~ 1010 years. Calculate the main sequence lifetime of a star of mass (i) 5 M and (ii) 0.2 M. ...
... (b) The estimated lifetime of the Sun on the main sequence is ~ 1010 years. Calculate the main sequence lifetime of a star of mass (i) 5 M and (ii) 0.2 M. ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.