Star Information ppt.
... that are fusing hydrogen into helium in their cores. Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
... that are fusing hydrogen into helium in their cores. Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
Astronomy Worksheet
... *In general a hot star’s spectrum looks smoother than a cooler star’s spectrum. *In very hot stars (> 10,000 K) most of the Hydrogen gas in the star’s atmosphere will be ionized. Since an ionized Hydrogen atom has no electron it cannot produce any spectral lines, thus the Hydrogen lines are weak in ...
... *In general a hot star’s spectrum looks smoother than a cooler star’s spectrum. *In very hot stars (> 10,000 K) most of the Hydrogen gas in the star’s atmosphere will be ionized. Since an ionized Hydrogen atom has no electron it cannot produce any spectral lines, thus the Hydrogen lines are weak in ...
Main-sequence stars - Stellar Populations
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
... Main-sequence stars are fusing hydrogen into helium in their cores like the Sun Luminous mainsequence stars are hot (blue) Less luminous ones are cooler (yellow or red) ...
13 The Family of Stars
... a pattern begins to form: These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence because this is where most stars are. The white dwarf region is also indicated; these stars are hot but not very luminous because they are qu ...
... a pattern begins to form: These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence because this is where most stars are. The white dwarf region is also indicated; these stars are hot but not very luminous because they are qu ...
K - College of San Mateo
... Losmandy G-11 equatorial mount w/Gemini. The mount takes goto commands from the computer to provide accurate tracking, via camera control software. Meade 8” SCT telescope with f/6.3 focal reducer. The faster f/ratio allows shorter exposure times, and imaging of fainter stars. FL=1270mm. Focusing is ...
... Losmandy G-11 equatorial mount w/Gemini. The mount takes goto commands from the computer to provide accurate tracking, via camera control software. Meade 8” SCT telescope with f/6.3 focal reducer. The faster f/ratio allows shorter exposure times, and imaging of fainter stars. FL=1270mm. Focusing is ...
Stars
... The center of our galaxy is also a copious source of x-rays and appears to be extremely massive. Stars in the Milky Way orbit around an unseen central object. Analysis of the orbital velocities of the stars about the center of the galaxy (using Kepler’s 3rd law) imply a mass of 2.6106 solar masses ...
... The center of our galaxy is also a copious source of x-rays and appears to be extremely massive. Stars in the Milky Way orbit around an unseen central object. Analysis of the orbital velocities of the stars about the center of the galaxy (using Kepler’s 3rd law) imply a mass of 2.6106 solar masses ...
Activity 1 - Mathematical and Scientific Methods
... Activity 22: Post-Activity Quiz (Got this far on Wednesday.) ...
... Activity 22: Post-Activity Quiz (Got this far on Wednesday.) ...
Reading the Stars
... 1. Examine color-magnitude diagrams of clusters of stars. Since a cluster of stars is a group of stars that were formed at the same time from the same cloud of gas and dust, we can learn a lot about the stars within that cluster. A color-magnitude diagram is a kind of H-R Diagram. The horizontal axi ...
... 1. Examine color-magnitude diagrams of clusters of stars. Since a cluster of stars is a group of stars that were formed at the same time from the same cloud of gas and dust, we can learn a lot about the stars within that cluster. A color-magnitude diagram is a kind of H-R Diagram. The horizontal axi ...
Light-years
... Earth and sun b. The tilted orbit of the moon c. The moons period of revolution just equals its period of rotation d. Sunlight reflecting off Earth’s surface ...
... Earth and sun b. The tilted orbit of the moon c. The moons period of revolution just equals its period of rotation d. Sunlight reflecting off Earth’s surface ...
Navigating the Night Sky – Teacher Guide Argos Online Subject
... o Why are the stars different sizes on the map? -Different magnitudes (brightness). Stars whose magnitudes are larger numbers are dimmer. The Greeks labeled the brightest stars they could see as magnitude 1 and the faintest as magnitude 6. We still use this system, but it often confuses people. The ...
... o Why are the stars different sizes on the map? -Different magnitudes (brightness). Stars whose magnitudes are larger numbers are dimmer. The Greeks labeled the brightest stars they could see as magnitude 1 and the faintest as magnitude 6. We still use this system, but it often confuses people. The ...
Sample Midterm - IUPUI Physics
... 13. If you plot a very large number of random stars on a HR Diagram measuring their apparent magnitude vs. their B-V magnitude what will you get? a) A nice neat plot with a clear main sequence and clear red giant branch b) A nice neat plot with a clear main sequence but a few red giant branches c) ...
... 13. If you plot a very large number of random stars on a HR Diagram measuring their apparent magnitude vs. their B-V magnitude what will you get? a) A nice neat plot with a clear main sequence and clear red giant branch b) A nice neat plot with a clear main sequence but a few red giant branches c) ...
What is light?
... • In the 17th Century, Isaac Newton argued that light was composed of little particles while Christian Huygens suggested that light travels in the form of waves. • In the 19th and 20th Century Maxwell, Young, Einstein and others were able to show that light behaves both like a wave and a particle de ...
... • In the 17th Century, Isaac Newton argued that light was composed of little particles while Christian Huygens suggested that light travels in the form of waves. • In the 19th and 20th Century Maxwell, Young, Einstein and others were able to show that light behaves both like a wave and a particle de ...
Starlight and What it Tells Us
... • How bright a star would be at a distance of 32.6 l.y. (10 parsecs) • Sun: 4.5 (inconspicuous naked-eye star) • Altair: 2.2 • Deneb: -7.1 (bright as crescent moon) – Note: Deneb - Altair about 10 magnitudes = 100 x 100 = 10,000 times ...
... • How bright a star would be at a distance of 32.6 l.y. (10 parsecs) • Sun: 4.5 (inconspicuous naked-eye star) • Altair: 2.2 • Deneb: -7.1 (bright as crescent moon) – Note: Deneb - Altair about 10 magnitudes = 100 x 100 = 10,000 times ...
Lecture 5/10 The interstellar medium and star formation Ulf
... C. Furthermore in these light stars the opacity is always large enough that the core will remain convective. Heavy stars on the other hand are hotter and start the nuclear reactions early and as main-sequence stars they use the CNO-cycle to burn hydrogen. Hot stars emit copious amounts of ultraviole ...
... C. Furthermore in these light stars the opacity is always large enough that the core will remain convective. Heavy stars on the other hand are hotter and start the nuclear reactions early and as main-sequence stars they use the CNO-cycle to burn hydrogen. Hot stars emit copious amounts of ultraviole ...
31-2 - Fremont Peak Observatory
... Eyes.” The Cat’s Eyes, λ and υ-Scorpii, are located at the Scorpion’s stinger on the tail of the scorpion. Lambda-Scorpii, Shaula, is the second brightest star in Scorpius (magnitude +1.6) and is also the 24th brightest fixed star on the celestial sphere. Lambda is actually a spectroscopic triple sy ...
... Eyes.” The Cat’s Eyes, λ and υ-Scorpii, are located at the Scorpion’s stinger on the tail of the scorpion. Lambda-Scorpii, Shaula, is the second brightest star in Scorpius (magnitude +1.6) and is also the 24th brightest fixed star on the celestial sphere. Lambda is actually a spectroscopic triple sy ...
The Sun, Stars, and Beyond
... • What conclusion can you draw about the mass of a star predicting its lifespan? • The more massive a star, the shorter it “lives”. • This is because larger, more massive stars are much hotter and burn (fuse) their nuclear fuel much more quickly. • Like a Corvette burning gas more quickly than a ...
... • What conclusion can you draw about the mass of a star predicting its lifespan? • The more massive a star, the shorter it “lives”. • This is because larger, more massive stars are much hotter and burn (fuse) their nuclear fuel much more quickly. • Like a Corvette burning gas more quickly than a ...
Giant Molecular Clouds and Gravitational Stability
... • Taurus (dist ≈ 140 pc, size ≈ 30 pc, mass ≈104 M): Only low mass stars (~105), quiet slow star formation, mostly isolated star formation. • Ophiuchus (dist ≈ 140 pc, size ≈ 6 pc, mass ≈ 104 M): Low mass stars (~78), strongly clustered in western core (stellar density 50 stars/pc), high star form ...
... • Taurus (dist ≈ 140 pc, size ≈ 30 pc, mass ≈104 M): Only low mass stars (~105), quiet slow star formation, mostly isolated star formation. • Ophiuchus (dist ≈ 140 pc, size ≈ 6 pc, mass ≈ 104 M): Low mass stars (~78), strongly clustered in western core (stellar density 50 stars/pc), high star form ...
leo 1. episode 1
... The names of extra-solar planets are derived by using the name of the star they orbit followed by a number indicating the planet’s position in order of distance from said star. Thus, planet Aldebaran-4 is the fourth planet of the star Aldebaran. Aldebaran-4 being the only habitable planet of the sys ...
... The names of extra-solar planets are derived by using the name of the star they orbit followed by a number indicating the planet’s position in order of distance from said star. Thus, planet Aldebaran-4 is the fourth planet of the star Aldebaran. Aldebaran-4 being the only habitable planet of the sys ...
G W ORIONIS, A 20000 YEARS OLD T TAURI STAR? 1\/"", _ 0.14
... Our knowledge 01' the actual ages 01' very young stars is very meager; the first indication Lhat we may be observing stars with ages 01' the onler 01' 10 000 years came indirectly from the analysis 01' the density distribution in the Orion nebula (Kahn am! Menon ]9(1) which showed that the latter co ...
... Our knowledge 01' the actual ages 01' very young stars is very meager; the first indication Lhat we may be observing stars with ages 01' the onler 01' 10 000 years came indirectly from the analysis 01' the density distribution in the Orion nebula (Kahn am! Menon ]9(1) which showed that the latter co ...
Image Credit: NASA,ESA, HEIC, Hubble
... – Electrons resist when we try to place them in the same place (not the same thing as electrostatic repulsion) – As soon as the collapsing core reaches the density where electrons “see” each other, the star becomes stable and stops collapsing ...
... – Electrons resist when we try to place them in the same place (not the same thing as electrostatic repulsion) – As soon as the collapsing core reaches the density where electrons “see” each other, the star becomes stable and stops collapsing ...
Searching For Planets Beyond Our Solar System - Cosmos
... The problem is, of course, that planets are small and faint, and much smaller and fainter than the relatively massive and bright central star around which they orbit. The di culties of `direct' detection of a planet|where the radiation reected or emitted by a planet is observed|is apparent when con ...
... The problem is, of course, that planets are small and faint, and much smaller and fainter than the relatively massive and bright central star around which they orbit. The di culties of `direct' detection of a planet|where the radiation reected or emitted by a planet is observed|is apparent when con ...
Lecture 16
... Stars in Algol are close enough that matter can flow from the subgiant onto the main-sequence star. ...
... Stars in Algol are close enough that matter can flow from the subgiant onto the main-sequence star. ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.