Interpolation of Magnitude.
... tank example, if a star’s brightness seemed about half way between two stars that were known to be magnitudes 5.0 and 6.0, what is the magnitude of the variable star? ...
... tank example, if a star’s brightness seemed about half way between two stars that were known to be magnitudes 5.0 and 6.0, what is the magnitude of the variable star? ...
Lecture 2
... • But very difficult to explain if you think that Earth is the center of the universe! • In fact, ancients considered but rejected the ...
... • But very difficult to explain if you think that Earth is the center of the universe! • In fact, ancients considered but rejected the ...
Falling Stars
... hours or days to see its movement. The center of a comet is a ball of frozen gas, dust, and water. Like planets or moons, comets orbit around the Sun. The comet that causes the Leonids is called Tempel-Tuttle. It is named after two scientists who discovered it at the end of 1865.The scientists were ...
... hours or days to see its movement. The center of a comet is a ball of frozen gas, dust, and water. Like planets or moons, comets orbit around the Sun. The comet that causes the Leonids is called Tempel-Tuttle. It is named after two scientists who discovered it at the end of 1865.The scientists were ...
DSLR Photometry
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
The Sun: center of the Solar System
... million years ago, similar in size to Chicxulub) • Barringer Crater (Arizona; one of the bestpreserved on Earth) • Ries and Steinholm (Germany; same age, probably binary asteroid) ...
... million years ago, similar in size to Chicxulub) • Barringer Crater (Arizona; one of the bestpreserved on Earth) • Ries and Steinholm (Germany; same age, probably binary asteroid) ...
Stellar Remnants - Sierra College Astronomy Home Page
... Most of the star is composed of neutrons in a superfluid state and supported by neutron degeneracy. The outer crust of a neutron star is largely electrons and positively charged atomic nuclei. The diameter of a typical neutron star is only 0.2% of the diameter of a white dwarf (about 20 km dia ...
... Most of the star is composed of neutrons in a superfluid state and supported by neutron degeneracy. The outer crust of a neutron star is largely electrons and positively charged atomic nuclei. The diameter of a typical neutron star is only 0.2% of the diameter of a white dwarf (about 20 km dia ...
Surveys of Stars, The interstellar medium
... Classification of Stars: the H-R diagram 1) Collect information on a large sample of stars. ...
... Classification of Stars: the H-R diagram 1) Collect information on a large sample of stars. ...
Nova
... An artist's concept of a close Algol-type binary. The relative size of the Sun is illustrated by the small circle to the upper right of the figure. Illustration courtesy of M. Richards. In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, cal ...
... An artist's concept of a close Algol-type binary. The relative size of the Sun is illustrated by the small circle to the upper right of the figure. Illustration courtesy of M. Richards. In Algol-type binaries, one of the stars has evolved and expanded to fill a droplet-shaped potential surface, cal ...
Astronomy
... that the Sun was at an angle of 6° south of the vertical at Alexandria at the same time that, at Syrene, 800 km south of Alexandria, the sun was observed to be exactly overhead. Based on these data, the circumference of the Earth in kilometers was measured to be 37,200 km or 23,250 miles, very close ...
... that the Sun was at an angle of 6° south of the vertical at Alexandria at the same time that, at Syrene, 800 km south of Alexandria, the sun was observed to be exactly overhead. Based on these data, the circumference of the Earth in kilometers was measured to be 37,200 km or 23,250 miles, very close ...
COMMENTS ON HOMEWORK 1 In many cases the answer to a
... critical points were left unexplained or a few words preceded by a critically placed 'since' or 'because' were provided as a poor substitute for an answer. Take time to think through the explanation requested, and then write it out in your own words. Remember a neatly drawn diagram is often helpful. ...
... critical points were left unexplained or a few words preceded by a critically placed 'since' or 'because' were provided as a poor substitute for an answer. Take time to think through the explanation requested, and then write it out in your own words. Remember a neatly drawn diagram is often helpful. ...
A PowerPoint on Lunar Grazing Occultations
... • An occultation of the planet Uranus. Note the slow brightening, since Uranus is 4 arcsec across, not a point source of light like a star ...
... • An occultation of the planet Uranus. Note the slow brightening, since Uranus is 4 arcsec across, not a point source of light like a star ...
AST 105 HW #1 Solution Week of August 24 , 2015
... 2. Briefly describe the major levels of structure (such as planet, star, galaxy) in the universe. Answer: The largest scale is the universe itself, which is the sum total of all matter and energy. The largest-known organized structures are superclusters of galaxies, then clusters and groups of galax ...
... 2. Briefly describe the major levels of structure (such as planet, star, galaxy) in the universe. Answer: The largest scale is the universe itself, which is the sum total of all matter and energy. The largest-known organized structures are superclusters of galaxies, then clusters and groups of galax ...
Part I Light, Telescopes, Atoms and Stars
... Near the center (the core) of the sun nuclear fusion is proceeding generating tremendous energy (4.7 million tons per second from E=mc2 and 3.9x1026 J/s luminosity) This is surrounded by the radiation zone – photons must take the energy out – random walk – 500,000 years! ...
... Near the center (the core) of the sun nuclear fusion is proceeding generating tremendous energy (4.7 million tons per second from E=mc2 and 3.9x1026 J/s luminosity) This is surrounded by the radiation zone – photons must take the energy out – random walk – 500,000 years! ...
Study Guide: Use your notes and handouts to answer the following
... As the moon orbits the Earth, it creates different angles between Earth, Moon, Sun which creates different views of the moon’s reflected light for us on Earth 35. When it is a full moon, what is the alignment of Earth, Sun, and Moon? Earth is in the middle of the Sun and Moon 36. When it is a new mo ...
... As the moon orbits the Earth, it creates different angles between Earth, Moon, Sun which creates different views of the moon’s reflected light for us on Earth 35. When it is a full moon, what is the alignment of Earth, Sun, and Moon? Earth is in the middle of the Sun and Moon 36. When it is a new mo ...
Outside the Solar System Outside the Solar System OUTSIDE THE
... The Big Idea: As long as humans have existed, we have looked into the night sky with curiosity and wonder. At this point in history, we are fortunate to benefit from technology that allows us to see and study parts of the universe that earlier cultures never could have. However, we are also limited ...
... The Big Idea: As long as humans have existed, we have looked into the night sky with curiosity and wonder. At this point in history, we are fortunate to benefit from technology that allows us to see and study parts of the universe that earlier cultures never could have. However, we are also limited ...
Galaxy Characteristics
... Sc, Sd, Sm galaxies – lots of H I S0 – Little gas – Some exceptions – ring-like structures ...
... Sc, Sd, Sm galaxies – lots of H I S0 – Little gas – Some exceptions – ring-like structures ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.