PDF - Interactive Stars
... Lyre is the most imaginative and creative of the signs. When they do, like Orpheus, they often strike a truly universal chord, which makes them fascinating to other people, for there can be something magical about them; a touch of other-worldly glamour which ensures that they will never lack friends ...
... Lyre is the most imaginative and creative of the signs. When they do, like Orpheus, they often strike a truly universal chord, which makes them fascinating to other people, for there can be something magical about them; a touch of other-worldly glamour which ensures that they will never lack friends ...
The Death of a Star
... become a neutron star. (3+ solar masses – Neutron limit) The force of gravity in a black hole is so strong that not even light can escape its gravitational field. The only way we can detect them are their gravitational influences on objects around them ...
... become a neutron star. (3+ solar masses – Neutron limit) The force of gravity in a black hole is so strong that not even light can escape its gravitational field. The only way we can detect them are their gravitational influences on objects around them ...
Observing Stellar Evolution
... Stellar evolution – refers to the stages in the lifetime of one star. When biologists talk about evolution they mean intergenerational evolution. While stars change from one generation to the next, the focus of this program is stellar lifetimes. Burning – The materials that comprise stars do not 'bu ...
... Stellar evolution – refers to the stages in the lifetime of one star. When biologists talk about evolution they mean intergenerational evolution. While stars change from one generation to the next, the focus of this program is stellar lifetimes. Burning – The materials that comprise stars do not 'bu ...
Star Classification and its Connection to Exoplanets.
... the pie, so the viewer can see the result: G classified (sun-like) stars have the majority of the exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. ...
... the pie, so the viewer can see the result: G classified (sun-like) stars have the majority of the exoplanets, at 38%. The second pie chart uses data from the percentage of stars that have planets, so at around 6.6% of a total of around 18%, G stars make up about 37%, again the dominant planet host. ...
October 2016 BRAS Newsletter - The Baton Rouge Astronomical
... on telescopes both on the ground and in space. Exultant astronomers worldwide captured data at visible, X-ray, gamma-ray, and radio wavelengths from telescopes both on the ground and in space. Three independent RAPTOR (Rapid Telescopes for Optical Response) full-sky monitoring telescopes—two in New ...
... on telescopes both on the ground and in space. Exultant astronomers worldwide captured data at visible, X-ray, gamma-ray, and radio wavelengths from telescopes both on the ground and in space. Three independent RAPTOR (Rapid Telescopes for Optical Response) full-sky monitoring telescopes—two in New ...
Lecture 12: Evolution of the Galaxy
... • New stars which form therefore have higher values of heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the most deficient in heavy elements relative to the Sun. • Halo Population I ...
... • New stars which form therefore have higher values of heavy element mass fraction, Z, at the time of their birth. The youngest stars are therefore the most heavy-element rich, and the oldest ones (Population II stars) are the most deficient in heavy elements relative to the Sun. • Halo Population I ...
The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL)
... Star formation triggered by expanding H ii regions The Spitzer–GLIMPSE images at 8 µm have unveiled a “bubbling Galactic disc”. More than 600 bubbles with diameters of a few arcminutes have been catalogued by Churchwell et al. (2006, 2007). As shown by Deharveng et al. (2010), more than 85 % of thes ...
... Star formation triggered by expanding H ii regions The Spitzer–GLIMPSE images at 8 µm have unveiled a “bubbling Galactic disc”. More than 600 bubbles with diameters of a few arcminutes have been catalogued by Churchwell et al. (2006, 2007). As shown by Deharveng et al. (2010), more than 85 % of thes ...
DTU 8e Chap 17 Quasars and Other Active Galaxies
... An active galaxy is an extremely luminous galaxy that has one or more unusual features: an unusually bright, starlike nucleus; strong emission lines in its spectrum; rapid variations in luminosity; and jets or beams of radiation that emanate from its core. Active galaxies include quasars, Seyfert ga ...
... An active galaxy is an extremely luminous galaxy that has one or more unusual features: an unusually bright, starlike nucleus; strong emission lines in its spectrum; rapid variations in luminosity; and jets or beams of radiation that emanate from its core. Active galaxies include quasars, Seyfert ga ...
Statistical analysis of stellar evolution
... separate out groups of stars powered by different physical processes and at different stages of their lives. These groups include the main sequence, so named for its dominant position in a CMD, the evolved red giants, and the even older white dwarfs. Today the physical processes that govern stellar ...
... separate out groups of stars powered by different physical processes and at different stages of their lives. These groups include the main sequence, so named for its dominant position in a CMD, the evolved red giants, and the even older white dwarfs. Today the physical processes that govern stellar ...
134-Notes-a
... The cones in your eyes respond more to color, but depend on having bright light, whereas the rods behave well in low light, but do not detect colors. Thus, galaxies and nebulae (low-light objects) typically will appear as black and white objects to human eyes, even when viewed through a telescope. N ...
... The cones in your eyes respond more to color, but depend on having bright light, whereas the rods behave well in low light, but do not detect colors. Thus, galaxies and nebulae (low-light objects) typically will appear as black and white objects to human eyes, even when viewed through a telescope. N ...
with answers
... From v) we find that it will take 9.81 billion years for the hydrogen to be depleted, however, we are told that the Sun will only have 5 billion years of active life left (Shröder & Connon Smith 2008). This is a large discrepancy (almost twice as long). Possible reasons for the discrepancy: ● not al ...
... From v) we find that it will take 9.81 billion years for the hydrogen to be depleted, however, we are told that the Sun will only have 5 billion years of active life left (Shröder & Connon Smith 2008). This is a large discrepancy (almost twice as long). Possible reasons for the discrepancy: ● not al ...
star
... If a star’s core after a supernova explosion is more than about three times the sun’s mass, its gravitational pull is very strong. The core collapses beyond the neutron-star stage to become a black hole. A black hole is an object whose surface gravity is so great that even electromagnetic waves, tra ...
... If a star’s core after a supernova explosion is more than about three times the sun’s mass, its gravitational pull is very strong. The core collapses beyond the neutron-star stage to become a black hole. A black hole is an object whose surface gravity is so great that even electromagnetic waves, tra ...
Name: Three Views Spectrum Simulation This simulation uses the
... terms electrons, protons, nucleus, and transition as they relate to the production of light. Because astronomers cannot bring a star into a laboratory for analysis, they have learned to use starlight to determine a star’s chemical composition, luminosity class (size), surface pressure, rotation, and ...
... terms electrons, protons, nucleus, and transition as they relate to the production of light. Because astronomers cannot bring a star into a laboratory for analysis, they have learned to use starlight to determine a star’s chemical composition, luminosity class (size), surface pressure, rotation, and ...
Name:
... terms electrons, protons, nucleus, and transition as they relate to the production of light. Because astronomers cannot bring a star into a laboratory for analysis, they have learned to use starlight to determine a star’s chemical composition, luminosity class (size), surface pressure, rotation, and ...
... terms electrons, protons, nucleus, and transition as they relate to the production of light. Because astronomers cannot bring a star into a laboratory for analysis, they have learned to use starlight to determine a star’s chemical composition, luminosity class (size), surface pressure, rotation, and ...
Entropy Production of Main-Sequence Stars
... the same distance from the Sun; (4) the HR diagram of clusters must be well approximated by theoretical isochrones plotted according to the model (the Padova database of evolutionary tracks and isochrones web-site: http://pleiadi.oapd.inaf.it/) [29,30] using the values of age and metallicity from th ...
... the same distance from the Sun; (4) the HR diagram of clusters must be well approximated by theoretical isochrones plotted according to the model (the Padova database of evolutionary tracks and isochrones web-site: http://pleiadi.oapd.inaf.it/) [29,30] using the values of age and metallicity from th ...
Stars
... emitted per second, or watts. The Sun’s luminosity is about 3.85 × 1026 W. The values for other stars vary widely, from about 0.0001 to more than 1 million times the Sun’s luminosity. No other stellar property varies as much. ...
... emitted per second, or watts. The Sun’s luminosity is about 3.85 × 1026 W. The values for other stars vary widely, from about 0.0001 to more than 1 million times the Sun’s luminosity. No other stellar property varies as much. ...
Lab 9
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
Ardua et Astra: On the Calculation of the Dates of the Rising and
... Coronae Borealis, which moves backwards by three days over the same period. It should also be noted that as the calendar year gets a little out of sync with the solar year towards the end of our four-year leap-year cycle, a slight change in the date may be noted: so for example, the apparent morning ...
... Coronae Borealis, which moves backwards by three days over the same period. It should also be noted that as the calendar year gets a little out of sync with the solar year towards the end of our four-year leap-year cycle, a slight change in the date may be noted: so for example, the apparent morning ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.