Ramin A. Skibba - Southern California Center for Galaxy Evolution
... Galaxy formation models typically assume that the central galaxy in a halo is the most massive and most luminous galaxy, and that the central galaxy is at rest at the center of the dark matter halo. Both of these assumptions are false. The observed velocity and spatial offsets of brightest halo gala ...
... Galaxy formation models typically assume that the central galaxy in a halo is the most massive and most luminous galaxy, and that the central galaxy is at rest at the center of the dark matter halo. Both of these assumptions are false. The observed velocity and spatial offsets of brightest halo gala ...
Birth, Age and the Future of the Universe
... first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence receding from us, – yet faster th ...
... first spectra of what was then called spiral “nebulae” (now known to be galaxies). It was a tedious process with small telescopes and slow emulsions. He found the spectral lines shifted toward the red (Figure 1) and he concluded correctly that the objects were hence receding from us, – yet faster th ...
The Hubble Mission - Indiana University Astronomy
... Sun-like Stars • Planetary nebula form when stars eject their outer envelops into space, revealing the hot dense core at the center of the star • Radiation from the exposed hot core heats the escaping gas until it glows • The beautiful shapes are thought to be caused by interactions with companion s ...
... Sun-like Stars • Planetary nebula form when stars eject their outer envelops into space, revealing the hot dense core at the center of the star • Radiation from the exposed hot core heats the escaping gas until it glows • The beautiful shapes are thought to be caused by interactions with companion s ...
- MNASSA Page
... more than 30 arc minutes. It is a very nice object to study through binoculars. The Magellanic Cloud is home to NGC 2070, also known as Bennett 35, the great looped nebula situated in the south-eastern part of the Cloud and probably one of the most amazing objects in the southern night sky. Known as ...
... more than 30 arc minutes. It is a very nice object to study through binoculars. The Magellanic Cloud is home to NGC 2070, also known as Bennett 35, the great looped nebula situated in the south-eastern part of the Cloud and probably one of the most amazing objects in the southern night sky. Known as ...
HR DIAGRAM (Page 1) - McDonald Observatory
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
... instance, the faintest stars our eyes alone may see are apparent magnitude 6. A fairly bright star like Sirius is magnitude -1.4, while the sun is a blinding -26. For each single step up or down on the magnitude scale, the brightness changes by a factor of 2.512. And for every five steps, the bright ...
The Sun and other Stars
... the same time, but independently of each other. H-R Diagram – ____________________________ Most stars lie along a diagonal line called the ______ ...
... the same time, but independently of each other. H-R Diagram – ____________________________ Most stars lie along a diagonal line called the ______ ...
Into the sub-mm
... points of emission at the tips of the fingers. Although it is too early to say conclusively what the emission signifies, it is possibile that these mark the earliest phase of star formation. Modelling of the chemistry and dynamics of the finger-tip condensations has begun. The final presentation of ...
... points of emission at the tips of the fingers. Although it is too early to say conclusively what the emission signifies, it is possibile that these mark the earliest phase of star formation. Modelling of the chemistry and dynamics of the finger-tip condensations has begun. The final presentation of ...
Jupiter is 90000 miles in diameter. It is 10 times the size of the earth
... The atmosphere appears as alternating bands of light regions, called zones, and dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupi ...
... The atmosphere appears as alternating bands of light regions, called zones, and dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupi ...
laboratory 1: digital imaging with ds9
... 3. Measure the peak pixel intensities (values) of the same stars (at least 10 and preferably 30-50 stars) on each pair of images. Note that the gray values of pixels in the “black sky” are not zero – to get a good measure of the brightness of that star, you must subtract the gray value of the sky me ...
... 3. Measure the peak pixel intensities (values) of the same stars (at least 10 and preferably 30-50 stars) on each pair of images. Note that the gray values of pixels in the “black sky” are not zero – to get a good measure of the brightness of that star, you must subtract the gray value of the sky me ...
Teachers` Manual - Amundsen High School
... Smaller bodies bombard planets and moons and create numerous craters ...
... Smaller bodies bombard planets and moons and create numerous craters ...
star
... If the remaining core of a supernova has a mass less than about three times the sun’s mass, it will become a neutron star, the dense remnant of a high-mass star that has exploded as a supernova. • In a neutron star, electrons and protons are crushed together by the star’s enormous gravity to form ne ...
... If the remaining core of a supernova has a mass less than about three times the sun’s mass, it will become a neutron star, the dense remnant of a high-mass star that has exploded as a supernova. • In a neutron star, electrons and protons are crushed together by the star’s enormous gravity to form ne ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.