ASTR100 Class 01 - University of Maryland Department of
... Life expectancy of 10 MSun star: 10 times as much fuel, uses it 104 times as fast. 10 million years. Life expectancy of 0.1 MSun star: 0.1 times as much fuel, uses it 0.01 times as fast. 100 billion years. ...
... Life expectancy of 10 MSun star: 10 times as much fuel, uses it 104 times as fast. 10 million years. Life expectancy of 0.1 MSun star: 0.1 times as much fuel, uses it 0.01 times as fast. 100 billion years. ...
Topics for Today`s Class Luminosity Equation The Heart of
... • In an H–R diagram, a star is represented by a dot at a position that shows the star’s luminosity and temperature. • The background color in this diagram indicates the temperature of the stars. • The Sun is a yellow-white G2 star. • Most stars including the Sun have properties along the mainsequenc ...
... • In an H–R diagram, a star is represented by a dot at a position that shows the star’s luminosity and temperature. • The background color in this diagram indicates the temperature of the stars. • The Sun is a yellow-white G2 star. • Most stars including the Sun have properties along the mainsequenc ...
Apparent Magnitude
... (hot and bright) to the lower-right (cooler and less bright), called the main sequence. In the lower-left is where white dwarfs are found, and above the main sequence are the subgiants, giants and supergiants. The Sun is found on the main sequence at luminosity 1 and temperature 5780K (spectral type ...
... (hot and bright) to the lower-right (cooler and less bright), called the main sequence. In the lower-left is where white dwarfs are found, and above the main sequence are the subgiants, giants and supergiants. The Sun is found on the main sequence at luminosity 1 and temperature 5780K (spectral type ...
Our Galaxy and the Universe
... - used to determine whether an object in space are moving away from or toward Earth. • When applied to light (EMS), the Doppler Effect shows: Red Shift when the source is moving away from an observer. (wavelengths are stretched) Blue Shift when the source is moving towards an observer. (wavelengths ...
... - used to determine whether an object in space are moving away from or toward Earth. • When applied to light (EMS), the Doppler Effect shows: Red Shift when the source is moving away from an observer. (wavelengths are stretched) Blue Shift when the source is moving towards an observer. (wavelengths ...
TAURUS ZODIAC CONSTELLATION In Greek mythology, Taurus
... local spiral arm to which the Sun belongs. The belt contains bright stars in many constellations including (in order going more or less eastward) Cepheus, Lacerta, Perseus, Orion, Canis Major, Puppis, Vela, Carina, Crux, Centaurus, Lupus, and Scorpius The Milky Way also passes through most of these ...
... local spiral arm to which the Sun belongs. The belt contains bright stars in many constellations including (in order going more or less eastward) Cepheus, Lacerta, Perseus, Orion, Canis Major, Puppis, Vela, Carina, Crux, Centaurus, Lupus, and Scorpius The Milky Way also passes through most of these ...
Exercise 9
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
earth & space science
... A star that has a mass about the same as the sun’s mass stays on the main sequence for about 10 billion years. Scientists estimate that over a period of almost 5 billion years, the sun has converted only 5% of its original hydrogen nuclei into helium nuclei. ...
... A star that has a mass about the same as the sun’s mass stays on the main sequence for about 10 billion years. Scientists estimate that over a period of almost 5 billion years, the sun has converted only 5% of its original hydrogen nuclei into helium nuclei. ...
Stellar Nucleosynthesis
... • Work on stellar nucleosynthesis in the 1950s has led to our current realization that most of the chemical elements are synthesized in stars. • Helium is made by hydrogen burning in the core during the main sequence and in a shell above the core in the red giant phase. • The energy released from nu ...
... • Work on stellar nucleosynthesis in the 1950s has led to our current realization that most of the chemical elements are synthesized in stars. • Helium is made by hydrogen burning in the core during the main sequence and in a shell above the core in the red giant phase. • The energy released from nu ...
Chapter 26.4
... Constellations Zodiac – “Birthday” Constellations “Move” on the ecliptic line – and can only be seen during certain months. The month of your birthday, you cannot see your zodiac constellation because it is BEHIND the sun. ...
... Constellations Zodiac – “Birthday” Constellations “Move” on the ecliptic line – and can only be seen during certain months. The month of your birthday, you cannot see your zodiac constellation because it is BEHIND the sun. ...
ch 2 the sky
... Most of the planets of our solar system are visible to the unaided eye, though they produce no light of their own, but we see them because sunlight reflects off of them ◦ Mercury, Venus, Mars, Jupiter, and Saturn can all be seen with out the aid of a telescope Figure 2-21 shows the location of Mer ...
... Most of the planets of our solar system are visible to the unaided eye, though they produce no light of their own, but we see them because sunlight reflects off of them ◦ Mercury, Venus, Mars, Jupiter, and Saturn can all be seen with out the aid of a telescope Figure 2-21 shows the location of Mer ...
February 16
... the luminosity of stars. The bigger the star the higher its luminosity. The width of the spectral lines is divided into luminosity classes; I being the narrowest, II being less narrow, and V being the broadest. ...
... the luminosity of stars. The bigger the star the higher its luminosity. The width of the spectral lines is divided into luminosity classes; I being the narrowest, II being less narrow, and V being the broadest. ...
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.