PHYSICS 113 Practice Questions #2
... b. a small disk of gas and dust surrounding a single star that was recently formed c. a cloud o f gas and du st illuminated by th e light of newly form ed stars within it d. the remnant of a star that exploded several thousand years ago e. an illusion caused by activity in the Earth's upper atmosphe ...
... b. a small disk of gas and dust surrounding a single star that was recently formed c. a cloud o f gas and du st illuminated by th e light of newly form ed stars within it d. the remnant of a star that exploded several thousand years ago e. an illusion caused by activity in the Earth's upper atmosphe ...
PH607lec10
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
Ch 19 Directed Reading
... 17. A huge explosion in which a large star dies is called a _____________________________. 18. A star made up of neutrons is called a _____________________________. 19. A spinning neutron star that emits pulses of energy is called a _____________________________. 20. An object so massive and dense t ...
... 17. A huge explosion in which a large star dies is called a _____________________________. 18. A star made up of neutrons is called a _____________________________. 19. A spinning neutron star that emits pulses of energy is called a _____________________________. 20. An object so massive and dense t ...
Galaxy1
... we find near us 2. Most stars must be high mass because throughout the galaxy we mostly see luminous stars 3. If we combine the two H-R diagrams there are about the same number of high and low mass stars in the Galaxy ...
... we find near us 2. Most stars must be high mass because throughout the galaxy we mostly see luminous stars 3. If we combine the two H-R diagrams there are about the same number of high and low mass stars in the Galaxy ...
Answers to Coursebook questions – Chapter E2
... In turn this implies that they orbit in different orbits, and so the inner star is a slower star and the more massive. ...
... In turn this implies that they orbit in different orbits, and so the inner star is a slower star and the more massive. ...
SETI: First Considerations (PowerPoint)
... Don’t assume that flife = 0.5 (a 50:50 chance), in the hopes of being “unbiassed.” That’s rather like saying “I have a 50:50 chance of winning the lottery: either I will, or I won’t.” flife is probably very close to zero (with very rare exceptions!) or very close to unity. But we don’t know which it ...
... Don’t assume that flife = 0.5 (a 50:50 chance), in the hopes of being “unbiassed.” That’s rather like saying “I have a 50:50 chance of winning the lottery: either I will, or I won’t.” flife is probably very close to zero (with very rare exceptions!) or very close to unity. But we don’t know which it ...
Finding Black Holes
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
Finding Black Holes Left Behind by Single Stars
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
... behviour of about 12 million stars over the span of a decade or so. About a dozen certain microlensing events were detected (plus lots of previously unknown variable stars, a rich byproduct). This allowed the astronomers involved to set some interesting limits on the numbers of black holes in the ha ...
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2-2 wkst - Home [www.petoskeyschools.org]
... ____________ 22. small hot stars that are dimmer than the sun ____________ 23. high-temperature stars that quickly use up their hydrogen ____________ 24. cool stars with high absolute magnitude ...
... ____________ 22. small hot stars that are dimmer than the sun ____________ 23. high-temperature stars that quickly use up their hydrogen ____________ 24. cool stars with high absolute magnitude ...
The Life Cycle of a Star
... the star has ignited, it becomes a main sequence star. Main Sequence stars fuse hydrogen to form helium, releasing enormous amounts of energy. It takes about 10 billion years to consume all the hydrogen in a Main Sequence star. ...
... the star has ignited, it becomes a main sequence star. Main Sequence stars fuse hydrogen to form helium, releasing enormous amounts of energy. It takes about 10 billion years to consume all the hydrogen in a Main Sequence star. ...
Evolution of Stars and Galaxies
... If supernova core is 3 or more times as massive as Sun core will collapse Not even light can escape An event horizon anything crossing this will go (region nothing can escape) Other stars orbit around it as usual ...
... If supernova core is 3 or more times as massive as Sun core will collapse Not even light can escape An event horizon anything crossing this will go (region nothing can escape) Other stars orbit around it as usual ...
Lecture Note
... – the magnitude depends on the distance of the star • Absolute magnitude is the apparent magnitude a star would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – One way to denote the intrinsic luminosity of a star in the unit of magnitude • The ...
... – the magnitude depends on the distance of the star • Absolute magnitude is the apparent magnitude a star would have if it were located exactly 10 parsecs from Earth – This magnitude is independent of the distance – One way to denote the intrinsic luminosity of a star in the unit of magnitude • The ...
BV Color Index and Temperature - The University of Texas at Dallas
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
Star Light, Star Bright: Exploring how stars are classified
... LP _________________________________________ Date ________ Objectives: • Students will work in small groups to organize stars into different categories based on observations of properties for a collection of stars. Materials: • One set of colored and laminated stars per 4 students: Star Set (pdf) Pr ...
... LP _________________________________________ Date ________ Objectives: • Students will work in small groups to organize stars into different categories based on observations of properties for a collection of stars. Materials: • One set of colored and laminated stars per 4 students: Star Set (pdf) Pr ...
Integrative Studies 410 Our Place in the Universe
... Hertzsprung-Russell diagram • Different clusters have different age • Observe stellar evolution by looking at stars of same age but different mass ...
... Hertzsprung-Russell diagram • Different clusters have different age • Observe stellar evolution by looking at stars of same age but different mass ...
CHAPTER 10, Stellar Motions
... these are within 100pc. The other 1/3 are farther than 100 pc, that is, beyond the solar neighborhood. The latter stars must be extraordinarily bright, since the farther a star is, the fainter its apparent brightness. 4. A large fraction of the stars are believed to be binary stars. Estimates range ...
... these are within 100pc. The other 1/3 are farther than 100 pc, that is, beyond the solar neighborhood. The latter stars must be extraordinarily bright, since the farther a star is, the fainter its apparent brightness. 4. A large fraction of the stars are believed to be binary stars. Estimates range ...
Young Stars
... •Light stars much more common than heavy ones •Objects lighter than 0.08 MSun are called Brown brown Dwarf dwarfs ...
... •Light stars much more common than heavy ones •Objects lighter than 0.08 MSun are called Brown brown Dwarf dwarfs ...
Wavelength
... to them in units of the distance traveled by light in one year. This unit is called a light year. The next closest star to us is Proxima Centauri. This star is 4.3 light years away which means that light from it takes 4.3 years to reach us. Our galaxy is about 100,000 light years across. This means ...
... to them in units of the distance traveled by light in one year. This unit is called a light year. The next closest star to us is Proxima Centauri. This star is 4.3 light years away which means that light from it takes 4.3 years to reach us. Our galaxy is about 100,000 light years across. This means ...
Virgo constellation
... elliptical galaxy, type E2 this galaxy has a large collection of globular clusters estimated about 5,900.There is strong evidence for a stellar mass black hole through observations made over a span of a few years. M49 was the first member of the Virgo clusters discovered. RA12h 29m 46.7s . DEC+08° 0 ...
... elliptical galaxy, type E2 this galaxy has a large collection of globular clusters estimated about 5,900.There is strong evidence for a stellar mass black hole through observations made over a span of a few years. M49 was the first member of the Virgo clusters discovered. RA12h 29m 46.7s . DEC+08° 0 ...
Chapter 28 Stars and Their Characteristics
... (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its ...
... (Volume x Luminosity) and Distance from Observer. Betelgeuse, one of the brightest stars in the Universe, does not appear to be as bright as our Sun, because of its ...
Lecture 6: Properties of Stars The Constellations The Constellations
... Kirchoff and Bunsen found wavelengths of absorption lines seen in Sun corresponded to emission lines observed when the atoms of a particular element are excited e.g., salt gives orange colour due to pair of sodium “D lines”. ...
... Kirchoff and Bunsen found wavelengths of absorption lines seen in Sun corresponded to emission lines observed when the atoms of a particular element are excited e.g., salt gives orange colour due to pair of sodium “D lines”. ...
Stars - Moodle
... High mass stars • After the main sequence, stars with a mass much greater than the sun can burn and create larger and larger elements • When it gets to iron, it takes too much energy to create other elements so it ...
... High mass stars • After the main sequence, stars with a mass much greater than the sun can burn and create larger and larger elements • When it gets to iron, it takes too much energy to create other elements so it ...
Sample Final - IUPUI Physics
... D) Astronomers have used all of these to measure distances 39) Stars are formed when: A) giant molecular clouds collapse B) a supernova scatters material into the Interstellar Medium C) a bubble bursts through the galactic plane D) a white dwarf collapses upon itself 40) HR diagrams have to compare ...
... D) Astronomers have used all of these to measure distances 39) Stars are formed when: A) giant molecular clouds collapse B) a supernova scatters material into the Interstellar Medium C) a bubble bursts through the galactic plane D) a white dwarf collapses upon itself 40) HR diagrams have to compare ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.