![January 2005](http://s1.studyres.com/store/data/007745882_1-cc88a50ec506439fea03471052f2ee68-300x300.png)
January 2005
... do a reliable census of the total stellar population in the galaxy. This allowed them to reliably identify the oldest stars inhabiting the galaxy, thereby setting an upper limit on the galaxy’s age. The baby galaxy managed to remain in an embryonic state as a cold gas cloud of primeval hydrogen and ...
... do a reliable census of the total stellar population in the galaxy. This allowed them to reliably identify the oldest stars inhabiting the galaxy, thereby setting an upper limit on the galaxy’s age. The baby galaxy managed to remain in an embryonic state as a cold gas cloud of primeval hydrogen and ...
Galaxies (and stars) in the far infrared: results from the AKARI All
... Since we were looking mainly for galaxies, we selected sources in a low-cirrus region (I100 < 10 MJy sr-1) on the sky to avoid contamination in FIR flux (5176 objects), which in practice meant mainly avoiding Galactic plane. ...
... Since we were looking mainly for galaxies, we selected sources in a low-cirrus region (I100 < 10 MJy sr-1) on the sky to avoid contamination in FIR flux (5176 objects), which in practice meant mainly avoiding Galactic plane. ...
`Daniel` – The Colonization of Tiamat
... 13 According to a story by Dewey Larson’s daughter, Linda, her father came to an understanding of galactic rotation by watching his shaving cream and whiskers spin down into the drain of his bathroom sink, realizing that galactic cores were consuming stars—not creating them. (Creation was from globu ...
... 13 According to a story by Dewey Larson’s daughter, Linda, her father came to an understanding of galactic rotation by watching his shaving cream and whiskers spin down into the drain of his bathroom sink, realizing that galactic cores were consuming stars—not creating them. (Creation was from globu ...
Lecture21 - Michigan State University
... Tidal forces have pulled out dust trails in front and behind these galaxies ...
... Tidal forces have pulled out dust trails in front and behind these galaxies ...
Every large galaxy seems to have a supermassive black hole at its
... The disk becomes a powerful source of X-rays and other radiation as well as a trigger for high-speed jets that spew out matter. At the peak of its feeding frenzy, the black hole gives birth to a quasar, one of the brightest types of objects in the universe and the most luminous kind of active galact ...
... The disk becomes a powerful source of X-rays and other radiation as well as a trigger for high-speed jets that spew out matter. At the peak of its feeding frenzy, the black hole gives birth to a quasar, one of the brightest types of objects in the universe and the most luminous kind of active galact ...
AGN surveys to study galaxy evolution along cosmic times
... mid-IR and in the radio. The second approach was based on the detection of spectral emission lines in the UV/optical and in the near- and mid-IR. For understanding galaxy evolution, one has to study the inter-play of the role of star formation and AGN: this can be done only with spectroscopic survey ...
... mid-IR and in the radio. The second approach was based on the detection of spectral emission lines in the UV/optical and in the near- and mid-IR. For understanding galaxy evolution, one has to study the inter-play of the role of star formation and AGN: this can be done only with spectroscopic survey ...
Cosmology and Particle Physics
... that are discussed in Dark Matter and Closure . The rst results, published in 1999, are only the beginning of emerging data, with astronomy now entering a data-rich era. Figure 5 shows how the recession of galaxies looks like the remnants of a gigantic explosion, the famous Big Bang. Extrapolating ...
... that are discussed in Dark Matter and Closure . The rst results, published in 1999, are only the beginning of emerging data, with astronomy now entering a data-rich era. Figure 5 shows how the recession of galaxies looks like the remnants of a gigantic explosion, the famous Big Bang. Extrapolating ...
22 pm - Starmap
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
16 Hubble s Law and Dark Matter
... The end of the quasar epoch seems to have been about 10 billion years ago; all the quasars we have seen are older than that. Why might that be? The black holes powering the quasars do not go away; it is believed that many, if not most, galaxies have a supermassive black hole at their centers. ...
... The end of the quasar epoch seems to have been about 10 billion years ago; all the quasars we have seen are older than that. Why might that be? The black holes powering the quasars do not go away; it is believed that many, if not most, galaxies have a supermassive black hole at their centers. ...
POISE AND EVOLUTION OF THE GALAXY : STRUCTURE ,
... the whole, within the last 2000 years. The reason is clear : this is just an instant phenomenon, with absolutely no warning before, and as soon disappearing with only quite ephemeral fossil remnants testifying. There is however, nowadays, a current opinion that SUPERNOVAE should actually be many tim ...
... the whole, within the last 2000 years. The reason is clear : this is just an instant phenomenon, with absolutely no warning before, and as soon disappearing with only quite ephemeral fossil remnants testifying. There is however, nowadays, a current opinion that SUPERNOVAE should actually be many tim ...
Neistein_dekel60
... The history of one galaxy We follow all the particles, and check which got heated/cooled/SF/accreted ...
... The history of one galaxy We follow all the particles, and check which got heated/cooled/SF/accreted ...
21_Testbank
... B) Galaxies were much bigger in the past since they had not contracted completely. C) Galaxies were closer together in the past because the universe was smaller. D) Galaxies attracted each other more strongly in the past because they were more massive; they had not yet turned most of their mass into ...
... B) Galaxies were much bigger in the past since they had not contracted completely. C) Galaxies were closer together in the past because the universe was smaller. D) Galaxies attracted each other more strongly in the past because they were more massive; they had not yet turned most of their mass into ...
Part1
... o If you know the mass / optical magnitude of a galaxy, you can guess its line width with reasonable accuracy.* o If you know the line width of a galaxy from line observations, you can estimate its distance or at least check for consistency.* ...
... o If you know the mass / optical magnitude of a galaxy, you can guess its line width with reasonable accuracy.* o If you know the line width of a galaxy from line observations, you can estimate its distance or at least check for consistency.* ...
Separating Stars and Galaxies Based on Color
... in two filters. Due to the limited number of such filters, ambiguities between object types appear, as objects with very different spectra can have very similar colors. The Deep Lens Survey is a twenty square degree, ground-based, multi-band survey which provides information about local and deep-spa ...
... in two filters. Due to the limited number of such filters, ambiguities between object types appear, as objects with very different spectra can have very similar colors. The Deep Lens Survey is a twenty square degree, ground-based, multi-band survey which provides information about local and deep-spa ...
Astronomy
... There are thousands of rocks between the orbit of Mars and Jupiter called “asteroids.” Ceres has a diameter of about 900 kilometers. Pallas and Vesta have diameters around 500 kilometers. There are thousands that are kilometer sized and millions smaller that a large boulder in the asteroid belt (the ...
... There are thousands of rocks between the orbit of Mars and Jupiter called “asteroids.” Ceres has a diameter of about 900 kilometers. Pallas and Vesta have diameters around 500 kilometers. There are thousands that are kilometer sized and millions smaller that a large boulder in the asteroid belt (the ...
Link again
... There are thousands of rocks between the orbit of Mars and Jupiter called “asteroids.” Ceres has a diameter of about 900 kilometers. Pallas and Vesta have diameters around 500 kilometers. There are thousands that are kilometer sized and millions smaller that a large boulder in the asteroid belt (the ...
... There are thousands of rocks between the orbit of Mars and Jupiter called “asteroids.” Ceres has a diameter of about 900 kilometers. Pallas and Vesta have diameters around 500 kilometers. There are thousands that are kilometer sized and millions smaller that a large boulder in the asteroid belt (the ...
So What All Is Out There, Anyway?
... vast areas of space where there are very few stars, and once you finally get big enough you see that most of the stars are grouped together in a large, flat disk with long arms reaching out into space in a spiral. This beautiful collection of stars, star clusters, and nebulas, is slowly rotating. At ...
... vast areas of space where there are very few stars, and once you finally get big enough you see that most of the stars are grouped together in a large, flat disk with long arms reaching out into space in a spiral. This beautiful collection of stars, star clusters, and nebulas, is slowly rotating. At ...
Paper - Astrophysics - University of Oxford
... 2.1. Formation of stars across the Universe When did stars form? To answer this basic question we can make use of the fact that every star must eventually die. Indeed the more massive stars die in spectacular supernova explosions that can outshine a whole galaxy. With an ELT these explosions can be ...
... 2.1. Formation of stars across the Universe When did stars form? To answer this basic question we can make use of the fact that every star must eventually die. Indeed the more massive stars die in spectacular supernova explosions that can outshine a whole galaxy. With an ELT these explosions can be ...
THE UNIVERSE - - GRADE 9, UNIT 4 (4 weeks)
... 5. Teacher reviews the electromagnetic spectrum in terms of visible light and related distance from the Earth. Students use a spectroscope to examine light coming through a spectrum to discover where the red light is. When the red light is very wide, the galaxy is moving away from Earth. Students re ...
... 5. Teacher reviews the electromagnetic spectrum in terms of visible light and related distance from the Earth. Students use a spectroscope to examine light coming through a spectrum to discover where the red light is. When the red light is very wide, the galaxy is moving away from Earth. Students re ...
Section 4
... Since then, astronomers have discovered more than 100 planets around other stars, and new ones are being discovered all of the time. Most of these new planets are very large, with at least half of the mass of Jupiter. A small planet would be hard to detect because it would have little gravitational ...
... Since then, astronomers have discovered more than 100 planets around other stars, and new ones are being discovered all of the time. Most of these new planets are very large, with at least half of the mass of Jupiter. A small planet would be hard to detect because it would have little gravitational ...
Star and Galaxies
... Burnout and Death All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydr ...
... Burnout and Death All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydr ...
Volcanoes and Igneous Activity Earth
... Burnout and Death All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydr ...
... Burnout and Death All stars, regardless of their size, eventually run out of fuel and collapse due to gravity. Death of Low-Mass Stars • Stars less than one-half the mass of the sun never evolve to the red giant stage but remain in the stable main-sequence stage until they consume all their hydr ...
CONSTELLATION URSA MAJOR, THE GREAT
... M101, also called the Pinwheel Galaxy, is a face-on spiral galaxy located 25 million light-years from Earth. It was also discovered by Pierre Méchain in 1781. Its spiral arms have regions with extensive star formation and have strong ultraviolet emissions. It has an integrated magnitude of 7.5, maki ...
... M101, also called the Pinwheel Galaxy, is a face-on spiral galaxy located 25 million light-years from Earth. It was also discovered by Pierre Méchain in 1781. Its spiral arms have regions with extensive star formation and have strong ultraviolet emissions. It has an integrated magnitude of 7.5, maki ...
The star Betelgeuse is about 500 light years away from us. If this star
... a) galaxies were more active in the past and therefore would have collided with each other more frequently b) galaxies were much bigger in the past since they had not contracted completely c) galaxies were closer together in the past because the Universe was smaller ...
... a) galaxies were more active in the past and therefore would have collided with each other more frequently b) galaxies were much bigger in the past since they had not contracted completely c) galaxies were closer together in the past because the Universe was smaller ...
Galaxy Zoo
![](https://commons.wikimedia.org/wiki/Special:FilePath/Galaxyzoo.jpg?width=300)
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.