M13 – The Great Hercules Cluster
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
Document
... Neutrons (and protons) are made of quarks. Gravity could crush neutrons into free quarks. Called strange matter (a type of quark). Astronomers think they may have seen a quark star. ...
... Neutrons (and protons) are made of quarks. Gravity could crush neutrons into free quarks. Called strange matter (a type of quark). Astronomers think they may have seen a quark star. ...
Planetarium Key Points
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
... Latitude is the elevation of the visible pole and, roughly, of Polaris The motion of the sphere seems uniform, for this reason it was the source for time telling, but the time scale that comes from is NOT uniform: rotation is slowing down, the day is longer and longer at the rate of 2 ms a centu ...
The Stellar Cycle
... 3. What about red dwarfs (0.08 Msun < M < 0.5 Msun) ? 4. Where do stars spend most of their time? 5. Which is the faintest? the sun, an O star, a white dwarf, or a red giant? ...
... 3. What about red dwarfs (0.08 Msun < M < 0.5 Msun) ? 4. Where do stars spend most of their time? 5. Which is the faintest? the sun, an O star, a white dwarf, or a red giant? ...
Mark Rubin
... (“optimistic”), low-metallicity (“plausible), and heavy Population II (“heavy Salpeter”) scenarios. We also indicate show the approximate sensitivity range of the GSMTs. The presence of strong, detectable HeII emission is a clear indication of a drastic change in the stellar initial mass function an ...
... (“optimistic”), low-metallicity (“plausible), and heavy Population II (“heavy Salpeter”) scenarios. We also indicate show the approximate sensitivity range of the GSMTs. The presence of strong, detectable HeII emission is a clear indication of a drastic change in the stellar initial mass function an ...
Explaining Apparent Retrograde Motion
... Estimated time to complete: 1 hour 10 minutes (so don’t wait until the last minute!) – can stop and start as you wish Read chapters, review notes before starting Some questions have multiple parts – do not skip them For some of the drag-and-drop ordering questions, two or more of the answers ...
... Estimated time to complete: 1 hour 10 minutes (so don’t wait until the last minute!) – can stop and start as you wish Read chapters, review notes before starting Some questions have multiple parts – do not skip them For some of the drag-and-drop ordering questions, two or more of the answers ...
The Luminosity
... Death of the Sun (low mass star) -10 billiion yrs: the Sun runs out of hydrogen fuel in its core. - Core is pure helium, shrinks. - Hydrogen farther out in the star gets hot enough to fuse “hydrogen shell burning” - Overall luminosity of star goes up and becomes a red giant. - 300million yrs later: ...
... Death of the Sun (low mass star) -10 billiion yrs: the Sun runs out of hydrogen fuel in its core. - Core is pure helium, shrinks. - Hydrogen farther out in the star gets hot enough to fuse “hydrogen shell burning” - Overall luminosity of star goes up and becomes a red giant. - 300million yrs later: ...
Absolute magnitude
... star D than star C? (Or, equally stated, how many times dimmer is star C than star D?) a) 10 ...
... star D than star C? (Or, equally stated, how many times dimmer is star C than star D?) a) 10 ...
Red Giant Red Giant White Giant Red Giant White Giant White Giant
... High mass star that consumes hydrogen rapidly. The star’s enormous weight crushes the core with so much pressure that fusion is possible. Mass: 4 - 10 SM StarPower Points: 9 ...
... High mass star that consumes hydrogen rapidly. The star’s enormous weight crushes the core with so much pressure that fusion is possible. Mass: 4 - 10 SM StarPower Points: 9 ...
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... We now introduce the concept of proper motion, as stellar positions change through both parallax and proper motion, and astrometric programs seek to measure both of these.. Since stars move around with random motions within our Galaxy as well as rotate around its center, there are two components to ...
... We now introduce the concept of proper motion, as stellar positions change through both parallax and proper motion, and astrometric programs seek to measure both of these.. Since stars move around with random motions within our Galaxy as well as rotate around its center, there are two components to ...
astronomy - T
... into constellations since antiquity • Officially 88 constellations (with strict boundaries for classification of objects) ...
... into constellations since antiquity • Officially 88 constellations (with strict boundaries for classification of objects) ...
the May 2017 Newsletter!
... repeated the tour for the later comers. Double star viewing started with Porrima which has a period of 169 years and, as viewed from Earth the two components were at their closest in 2005. For some years it was not possible to split the two in our local telescopes, and we have been looking at them a ...
... repeated the tour for the later comers. Double star viewing started with Porrima which has a period of 169 years and, as viewed from Earth the two components were at their closest in 2005. For some years it was not possible to split the two in our local telescopes, and we have been looking at them a ...
Evolved Stellar Populations
... Period-magnitude relations involving Ks have a much smaller scatter: can be used for 3D pics. Combining variations in different bands approaches the study of bolometric variations. ...
... Period-magnitude relations involving Ks have a much smaller scatter: can be used for 3D pics. Combining variations in different bands approaches the study of bolometric variations. ...
Phys 100 – Astronomy (Dr. Ilias Fernini) Review Questions for
... a. operates at a slightly lower temperature than the proton-proton chain. b. is most efficient in a star less massive than the sun. c. occurs when carbon and oxygen combine to form nitrogen, which produces energy. d. produces the energy responsible for bipolar flows. * e. combines four hydrogen nucl ...
... a. operates at a slightly lower temperature than the proton-proton chain. b. is most efficient in a star less massive than the sun. c. occurs when carbon and oxygen combine to form nitrogen, which produces energy. d. produces the energy responsible for bipolar flows. * e. combines four hydrogen nucl ...
The Hidden Lives of Galaxies NSTA 2001
... abundant stars? The rarest stars? What are the characteristics of the stars that do not conform to the graph’s trend? In terms of the graph’s trend, is our sun typical or exceptional? If you replaced the temperature scale on the graph’s x-axis with a color scale, which color would be closest to the ...
... abundant stars? The rarest stars? What are the characteristics of the stars that do not conform to the graph’s trend? In terms of the graph’s trend, is our sun typical or exceptional? If you replaced the temperature scale on the graph’s x-axis with a color scale, which color would be closest to the ...
Lecture Note
... • Apparent magnitude is a measure of a star’s apparent brightness as seen from Earth – the magnitude depends on the distance of the star • Absolute magnitude is the apparent magnitude a star would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – ...
... • Apparent magnitude is a measure of a star’s apparent brightness as seen from Earth – the magnitude depends on the distance of the star • Absolute magnitude is the apparent magnitude a star would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – ...
Stars - Mrs. Tosh`s class
... The entire sky is lit up for weeks. The temperature can be more than 100 billion degrees. The iron atoms fuse into uranium. ...
... The entire sky is lit up for weeks. The temperature can be more than 100 billion degrees. The iron atoms fuse into uranium. ...
Introduction and first data set
... Bubble Space Telescope (BST). They asked for observations of the ten brightest and ten faintest fuzzballs. The BST time allocation committee allocated half the time they asked for, allowing observations of ten fuzzballs in total (they were not convinced that the extra time would tell them anything i ...
... Bubble Space Telescope (BST). They asked for observations of the ten brightest and ten faintest fuzzballs. The BST time allocation committee allocated half the time they asked for, allowing observations of ten fuzzballs in total (they were not convinced that the extra time would tell them anything i ...