Protostars and planets
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
... known were those in the Solar System: the most massive of them is only MJupiter ≈ 10−3 M⊙ , and there are many of them follow approximately circular orbits about the Sun (indeed “planet” comes from Greek “wanderer” because planets appear to move through the fixed stars). Classifications based on mas ...
Sirius Astronomer - Orange County Astronomers
... Maybe they were still away on spring break, or believed earlier weather forecasts that indicated that conditions wouldn’t be that good. For whatever reason, there was only one family on the Football Field, three people on Ten Pad (though Joe Busch had his solar scope set up there as well), a couple ...
... Maybe they were still away on spring break, or believed earlier weather forecasts that indicated that conditions wouldn’t be that good. For whatever reason, there was only one family on the Football Field, three people on Ten Pad (though Joe Busch had his solar scope set up there as well), a couple ...
Nebula Beginnings - University of Dayton
... This image from NASA's Hubble Space Telescope shows for the first time the inner region of a 200-billion mile diameter dust disk around the star Beta Pictoris. This region has long been hidden from ground-based telescopes because of the glare from the central star. The disk is slightly warped. If th ...
... This image from NASA's Hubble Space Telescope shows for the first time the inner region of a 200-billion mile diameter dust disk around the star Beta Pictoris. This region has long been hidden from ground-based telescopes because of the glare from the central star. The disk is slightly warped. If th ...
Celestial Equator
... Some of the current constellations can be traced back to the inhabitants of the Euphrates valley, from whom they were handed down through the Greeks and Arabs. Few pictorial records of the ancient constellation figures have survived, but in the Almagest AD 150, Ptolemy catalogued the positions of 1, ...
... Some of the current constellations can be traced back to the inhabitants of the Euphrates valley, from whom they were handed down through the Greeks and Arabs. Few pictorial records of the ancient constellation figures have survived, but in the Almagest AD 150, Ptolemy catalogued the positions of 1, ...
Star - Astrophysics
... primarily occur in the disc of our Galaxy and are usually distant enough to be hidden, optically, by interstellar dust; many supernova remnants can be observed at radio wavelengths). Supernovae come in three main types, Ia, Ib and II. Type II supernovae (SNe) have hydrogen lines in their spectra. Th ...
... primarily occur in the disc of our Galaxy and are usually distant enough to be hidden, optically, by interstellar dust; many supernova remnants can be observed at radio wavelengths). Supernovae come in three main types, Ia, Ib and II. Type II supernovae (SNe) have hydrogen lines in their spectra. Th ...
Solar System Review
... A fragment of rock, ice, or metal that has broken off colliding comets or asteroids and burns up in Earth’s atmosphere is known as a(n) a. asteroid. b. meteor. c. satellite. d. minor planets. ...
... A fragment of rock, ice, or metal that has broken off colliding comets or asteroids and burns up in Earth’s atmosphere is known as a(n) a. asteroid. b. meteor. c. satellite. d. minor planets. ...
PS#3
... Lsun is 4x1026 W, so this is about 0.001 times the Sun’s luminosity 4. A radio transmitter on a spacecraft emits a signal at a frequency of 10 Hz. At Earth the signal is received and noted to be at 99,970,000Hz. How fast is the spacecraft moving? Is it receding or approaching? ...
... Lsun is 4x1026 W, so this is about 0.001 times the Sun’s luminosity 4. A radio transmitter on a spacecraft emits a signal at a frequency of 10 Hz. At Earth the signal is received and noted to be at 99,970,000Hz. How fast is the spacecraft moving? Is it receding or approaching? ...
What is a Hertzsprung
... • What is a Hertzsprung-Russell diagram? – An H-R diagram plots stellar luminosity of stars versus surface temperature (or color or spectral type) ...
... • What is a Hertzsprung-Russell diagram? – An H-R diagram plots stellar luminosity of stars versus surface temperature (or color or spectral type) ...
Week 9 notes
... • Now think about a hot stellar atmosphere (say 40000k). Here the collisions in the gas are energetic enough to ionize the H atoms. • Again, even if there is lots of hydrogen, if there are few H atoms with electrons in the 1st excited state, there will be no evidence for the hydrogen in the visible ...
... • Now think about a hot stellar atmosphere (say 40000k). Here the collisions in the gas are energetic enough to ionize the H atoms. • Again, even if there is lots of hydrogen, if there are few H atoms with electrons in the 1st excited state, there will be no evidence for the hydrogen in the visible ...
TMSP Stellar Evolution & Life
... Simplified illustration of the evolution of a star with the mass of the Sun •The star forms from a collapsing nebula, or cloud of gas (1) •then undergoes a contraction period as a protostar (2) •before joining the main sequence (3). •Once the Hydrogen at the core is consumed it expands into a red g ...
... Simplified illustration of the evolution of a star with the mass of the Sun •The star forms from a collapsing nebula, or cloud of gas (1) •then undergoes a contraction period as a protostar (2) •before joining the main sequence (3). •Once the Hydrogen at the core is consumed it expands into a red g ...
File
... about 8 –10 times the Sun’s mass will have the same fate. (Later we will see that stars in tightly bound binary systems can end their lives in a different manner.) Since the Sun is a typical star in this mass range, we focus our attention on stars of one solar mass when describing the various evolut ...
... about 8 –10 times the Sun’s mass will have the same fate. (Later we will see that stars in tightly bound binary systems can end their lives in a different manner.) Since the Sun is a typical star in this mass range, we focus our attention on stars of one solar mass when describing the various evolut ...
Homework 2
... Halley Orbit. Halley’s Comet orbits the Sun every 76.0 years and has an orbital eccentricity of 0.97. a) Find its average distance from the Sun (semi-major axis). b) Find its perihelion and aphelion distances. To find the semi-major axis a, we can use the formula p2 = a3 (with units of years and AU) ...
... Halley Orbit. Halley’s Comet orbits the Sun every 76.0 years and has an orbital eccentricity of 0.97. a) Find its average distance from the Sun (semi-major axis). b) Find its perihelion and aphelion distances. To find the semi-major axis a, we can use the formula p2 = a3 (with units of years and AU) ...
white dwarf supernova
... So you think you know what a white dwarf is? • Its composition depends on the mass of the star it formed from: • The smallest stars form helium white dwarfs. • Sun-sized stars form carbon white dwarfs. • Larger (but still “low-mass”) stars form white dwarfs with a mix of heavier elements • A teaspo ...
... So you think you know what a white dwarf is? • Its composition depends on the mass of the star it formed from: • The smallest stars form helium white dwarfs. • Sun-sized stars form carbon white dwarfs. • Larger (but still “low-mass”) stars form white dwarfs with a mix of heavier elements • A teaspo ...
Star Constellations
... http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Creative Commons Attribution-Non-Commercial 3.0 ...
... http://www.ck12.org/saythanks (placed in a visible location) in addition to the following terms. Except as otherwise noted, all CK-12 Content (including CK-12 Curriculum Material) is made available to Users in accordance with the Creative Commons Attribution-Non-Commercial 3.0 ...
Question Paper - SAVE MY EXAMS!
... 17 Scientists believe that our universe began with a big bang, and is presently expanding. The ultimate fate of the universe depends upon the total amount of matter in the universe. One possibility is a big crunch where the universe eventually contracts back into a point of infinite density. A unive ...
... 17 Scientists believe that our universe began with a big bang, and is presently expanding. The ultimate fate of the universe depends upon the total amount of matter in the universe. One possibility is a big crunch where the universe eventually contracts back into a point of infinite density. A unive ...
The Sun - Center for Astrophysics and Space Astronomy CASA
... • Type I and Type II Supernovae have comparable brightness. • Type II’s are NOT 1000x brighter. • Where did 99.9% of the energy go?? ...
... • Type I and Type II Supernovae have comparable brightness. • Type II’s are NOT 1000x brighter. • Where did 99.9% of the energy go?? ...
charts_set_7
... Some protostars not massive (< 0.08 MSun) enough to begin fusion. These are Brown Dwarfs or failed stars. Very difficult to detect because so faint. First seen in 1994 with Hubble. How many are there? ...
... Some protostars not massive (< 0.08 MSun) enough to begin fusion. These are Brown Dwarfs or failed stars. Very difficult to detect because so faint. First seen in 1994 with Hubble. How many are there? ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.