A sound nebula: the origin of the Solar System in the field of a
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
A sound nebula: the origin of the Solar System in the field of a
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
... It consists of trillions of small objects composed of dust and water, ammonia and methane ice and it is believed that these objects were scattered outwards by the gas giants at the planetary formation stage and then acquired distant circular orbits (out to about one light year) as a result of gravi ...
Scorpius: The Scorpion Σκορπιος Amber Perrine Physics 1040 MWF
... about RA 17h 55m, DEC -36° 33” and covers an area of 497 square degrees. It can be seen at latitudes between +40° and -90°. The constellation of Scorpius is bordered by the constellations of Sagittarius, Libra, Ophiuchus, Lupus, Borma, and Ara, and Corona Australis. This J-shaped stick figure is eas ...
... about RA 17h 55m, DEC -36° 33” and covers an area of 497 square degrees. It can be seen at latitudes between +40° and -90°. The constellation of Scorpius is bordered by the constellations of Sagittarius, Libra, Ophiuchus, Lupus, Borma, and Ara, and Corona Australis. This J-shaped stick figure is eas ...
APOD Wall Calendar 2015 General: All Topics
... The image was taken recently from Siding Spring Observatory in Australia and presented in scientifically assigned colors. Seen near the center of the image are small, dark molecular clouds rich in obscuring cosmic dust. Called Thackeray's Globules for their discoverer, these "eggs" are potential sit ...
... The image was taken recently from Siding Spring Observatory in Australia and presented in scientifically assigned colors. Seen near the center of the image are small, dark molecular clouds rich in obscuring cosmic dust. Called Thackeray's Globules for their discoverer, these "eggs" are potential sit ...
The Interstellar Medium (ch. 18) Interstellar Dust Grains
... (moving supersonically in more-or-less random directions), and often found in “supershells” of expanding gas driven by luminous young stars. The illustration on p. 479 shows how our solar system is actually located within a cavity bounded by one of these supershells—it is believed that a number of s ...
... (moving supersonically in more-or-less random directions), and often found in “supershells” of expanding gas driven by luminous young stars. The illustration on p. 479 shows how our solar system is actually located within a cavity bounded by one of these supershells—it is believed that a number of s ...
Capturing Heaven - Communicating Astronomy with the Public Journal
... the inner planets, including Earth. At the end of this stage, it will then collapse in on itself to become a white dwarf, eventually burning itself out. This represents a generalised life cycle that most stars will follow, save for those stars that have huge amounts of mass. These may go out a bit m ...
... the inner planets, including Earth. At the end of this stage, it will then collapse in on itself to become a white dwarf, eventually burning itself out. This represents a generalised life cycle that most stars will follow, save for those stars that have huge amounts of mass. These may go out a bit m ...
Calculating the Age of a Planetary Nebula
... If you get the error message Use x1 zoom, simply click on the x1 button alongside the zoom buttons described above to bring the image back to the original size. The cursor will change shape and an Output window will pop up on the screen. Click at one edge of the main shell and the x,y-coordinates wi ...
... If you get the error message Use x1 zoom, simply click on the x1 button alongside the zoom buttons described above to bring the image back to the original size. The cursor will change shape and an Output window will pop up on the screen. Click at one edge of the main shell and the x,y-coordinates wi ...
AST301.Ch18.InterstelMed - University of Texas Astronomy
... you don’t understand details of this—see p.471 for illustration) in shape. We know (how? See p.472, but we’ll discuss in class) they are composed of silicates (like rocks on earth), graphite (or something like it), and maybe iron, with a coating of various ices (“dirty ice”). Origin. When we try to ...
... you don’t understand details of this—see p.471 for illustration) in shape. We know (how? See p.472, but we’ll discuss in class) they are composed of silicates (like rocks on earth), graphite (or something like it), and maybe iron, with a coating of various ices (“dirty ice”). Origin. When we try to ...
Observing Nebulosities: The Cygnus Superbubble Chris
... of expanding interstellar matter are still not well understood. Since, within the Milky Way, Cygnus is located along the local Orion spur, star-forming structures at different distances are possibly located along the line of sight. Indeed, recent X-ray emission findings (Uyaniker et al. 2001) sugges ...
... of expanding interstellar matter are still not well understood. Since, within the Milky Way, Cygnus is located along the local Orion spur, star-forming structures at different distances are possibly located along the line of sight. Indeed, recent X-ray emission findings (Uyaniker et al. 2001) sugges ...
http://hcs.harvard.edu/~jus/0302/bester.pdf
... and position correctly. In this project, in addition to repeating Hubble’s measurements with better data, we also obtain the linear speed of the nebula’s expansion along our line of sight by examining the Crab’s spectrum. Using the linear and angular rates of expansion, we could then calculate the C ...
... and position correctly. In this project, in addition to repeating Hubble’s measurements with better data, we also obtain the linear speed of the nebula’s expansion along our line of sight by examining the Crab’s spectrum. Using the linear and angular rates of expansion, we could then calculate the C ...
Chapter 11
... b. Some stars here are between the birth line and the main sequence. c. Some visible stars in the Orion region have disks. d. Some short-lived stars are located in this region. e. All of the above. ...
... b. Some stars here are between the birth line and the main sequence. c. Some visible stars in the Orion region have disks. d. Some short-lived stars are located in this region. e. All of the above. ...
100 Binocular Deep Sky Objects
... An observing list from the logs of Ed Zarenski Sometimes we hear binocular observers ask, What is there to look at? Binoculars are useful for wide-field viewing and there just aren’t a lot of wide-field objects to view, so where should I look? My answer to those questions is, You can look at nearly ...
... An observing list from the logs of Ed Zarenski Sometimes we hear binocular observers ask, What is there to look at? Binoculars are useful for wide-field viewing and there just aren’t a lot of wide-field objects to view, so where should I look? My answer to those questions is, You can look at nearly ...
G W ORIONIS, A 20000 YEARS OLD T TAURI STAR? 1\/"", _ 0.14
... Our knowledge 01' the actual ages 01' very young stars is very meager; the first indication Lhat we may be observing stars with ages 01' the onler 01' 10 000 years came indirectly from the analysis 01' the density distribution in the Orion nebula (Kahn am! Menon ]9(1) which showed that the latter co ...
... Our knowledge 01' the actual ages 01' very young stars is very meager; the first indication Lhat we may be observing stars with ages 01' the onler 01' 10 000 years came indirectly from the analysis 01' the density distribution in the Orion nebula (Kahn am! Menon ]9(1) which showed that the latter co ...
L5 Protoplanetary disks Part I
... The rotation, density, temperature in the protoplanetary disk are very important for the formation of planets: They are the initial and boundary conditions of planet formation. From what we have seen, protoplanetary disks are generally believed to have relatively small mass, typically a few percents ...
... The rotation, density, temperature in the protoplanetary disk are very important for the formation of planets: They are the initial and boundary conditions of planet formation. From what we have seen, protoplanetary disks are generally believed to have relatively small mass, typically a few percents ...
Exam 2
... hot remnant of the central star heats the gas, causing it to glow. For a few thousand years, the dying star is surrounded by a beautiful gleaming cloud known as a planetary nebula. Planetary nebulae have a spectacular array of shapes, sizes and structures. This diversity holds clues about stellar ev ...
... hot remnant of the central star heats the gas, causing it to glow. For a few thousand years, the dying star is surrounded by a beautiful gleaming cloud known as a planetary nebula. Planetary nebulae have a spectacular array of shapes, sizes and structures. This diversity holds clues about stellar ev ...
Tasks - ESA Science
... Observatories in Chile have presented ever deeper and more spectacular views of the Universe. However, Hubble and the ESO telescopes have not just provided stunning new images, they are also invaluable tools for astronomers. The telescopes have excellent spatial/angular resolution (image sharpness) ...
... Observatories in Chile have presented ever deeper and more spectacular views of the Universe. However, Hubble and the ESO telescopes have not just provided stunning new images, they are also invaluable tools for astronomers. The telescopes have excellent spatial/angular resolution (image sharpness) ...
The Formation of Stars and Solar Systems
... • Since these clouds are cooler than most places, they are perfect breeding grounds for star birth. When the density is 1,000 times greater than what is found in normal interstellar space, many atoms combine into molecules molecular hydrogen (H2), and the gas cloud becomes a molecular cloud. • A mol ...
... • Since these clouds are cooler than most places, they are perfect breeding grounds for star birth. When the density is 1,000 times greater than what is found in normal interstellar space, many atoms combine into molecules molecular hydrogen (H2), and the gas cloud becomes a molecular cloud. • A mol ...
English Summary
... We have seen that the gas from which the stars are formed consist mostly of hydrogen. Through the ejection of their envelope, Planetary Nebulae return gas to the interstellar medium from which future generations of stars will be formed. This gas still contains mostly hydrogen but it also contains no ...
... We have seen that the gas from which the stars are formed consist mostly of hydrogen. Through the ejection of their envelope, Planetary Nebulae return gas to the interstellar medium from which future generations of stars will be formed. This gas still contains mostly hydrogen but it also contains no ...
Spring Constellations
... centaur’s front hooves, Rigil Kentaurus and Hadar, also called ά- and β-Centauri. Our closest neighbor, Proxima Centauri, a red dwarf star 4 LY away, is due south of alpha Centauri. It’s so faint that it can’t be seen with the naked eye. It’s only about 5 times larger than the earth. ...
... centaur’s front hooves, Rigil Kentaurus and Hadar, also called ά- and β-Centauri. Our closest neighbor, Proxima Centauri, a red dwarf star 4 LY away, is due south of alpha Centauri. It’s so faint that it can’t be seen with the naked eye. It’s only about 5 times larger than the earth. ...
Warm-Up Monday, July 23, 2012
... • A. The stars of Orion are closer together in space. • B. The stars in Orion orbit the Sun, just like the planets. • C. The brightest stars in Orion are the ones that are closest to us. • D. You can’t tell if the brightest stars in Orion are really brighter than the others, or if they are just clos ...
... • A. The stars of Orion are closer together in space. • B. The stars in Orion orbit the Sun, just like the planets. • C. The brightest stars in Orion are the ones that are closest to us. • D. You can’t tell if the brightest stars in Orion are really brighter than the others, or if they are just clos ...
Ch 18
... This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permit ...
... This work is protected by United States copyright laws and is provided solely for the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permit ...
The Southern Fall PDF - Treasures of the Southern Sky
... unaided eye, but is less famous than the much smaller and closer Orion Nebula. In part this is because NGC 3372 is in the far southern sky, while the Orion Nebula is on the celestial equator, framed by a memorable collection of stars and visible from all parts of the globe. The nebula in the constel ...
... unaided eye, but is less famous than the much smaller and closer Orion Nebula. In part this is because NGC 3372 is in the far southern sky, while the Orion Nebula is on the celestial equator, framed by a memorable collection of stars and visible from all parts of the globe. The nebula in the constel ...
Chapter 10
... and death of stars, the theme of the next five chapters, we begin with a chapter about the gas and dust between the stars. It is the flour from which nature bakes stars. This chapter clearly illustrates how astronomers use the interaction of light and matter to learn about nature on the astronomical ...
... and death of stars, the theme of the next five chapters, we begin with a chapter about the gas and dust between the stars. It is the flour from which nature bakes stars. This chapter clearly illustrates how astronomers use the interaction of light and matter to learn about nature on the astronomical ...
Orion Nebula
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 ± 20 light years and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light years across. It has a mass of about 2000 times the mass of the Sun. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula.The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula.