Name - MIT
... E) two helium nuclei into one carbon nucleus plus energy and a neutrino 32) A white dwarf is ____. A) a precursor to a black hole. B) a brown dwarf that has exhausted its fuel for nuclear fusion. C) what most stars become when they die. D) an early stage of a neutron star. E) a protostar that gives ...
... E) two helium nuclei into one carbon nucleus plus energy and a neutrino 32) A white dwarf is ____. A) a precursor to a black hole. B) a brown dwarf that has exhausted its fuel for nuclear fusion. C) what most stars become when they die. D) an early stage of a neutron star. E) a protostar that gives ...
Constellations and Distances to Stars
... How can we find the distance from Earth to stars? • Parallax • Stars within the same constellation are not necessarily close. They could appear to be almost touching and actually be one trillion kilometers apart. Very few stars are gravitationally bound to one another. • One way to know when a sta ...
... How can we find the distance from Earth to stars? • Parallax • Stars within the same constellation are not necessarily close. They could appear to be almost touching and actually be one trillion kilometers apart. Very few stars are gravitationally bound to one another. • One way to know when a sta ...
Star Show FACILITATOR NOTES
... closely matches the Sun’s spectrum must have a temperature very close to the temperature at the Sun’s visible surface—well over 5000°C. Except for specialized lights used in photography, most real light filaments operate at a lower temperature (around 2500°C) which gives a more reddish-orange color ...
... closely matches the Sun’s spectrum must have a temperature very close to the temperature at the Sun’s visible surface—well over 5000°C. Except for specialized lights used in photography, most real light filaments operate at a lower temperature (around 2500°C) which gives a more reddish-orange color ...
Star signs and horoscopes
... is the part of the sky in which the Sun appears to move across the heavens (of course it is actually the Earth that moves). The zodiac is divided into 12 equal parts, each of which has its own star sign. Then explain that long ago, people thought there was a special meaning behind the movements and ...
... is the part of the sky in which the Sun appears to move across the heavens (of course it is actually the Earth that moves). The zodiac is divided into 12 equal parts, each of which has its own star sign. Then explain that long ago, people thought there was a special meaning behind the movements and ...
Stars: some basic characteristics
... lines is that they are very hot. There is so much thermal energy in their atmospheres that most of the elements become ionized; if the electrons aren’t attached to nuclei, then they can’t transition between energy levels and so they can’t ...
... lines is that they are very hot. There is so much thermal energy in their atmospheres that most of the elements become ionized; if the electrons aren’t attached to nuclei, then they can’t transition between energy levels and so they can’t ...
HR Diagram Lab Handout
... Background: You are about to create your own HR Diagram, a chart that revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely b ...
... Background: You are about to create your own HR Diagram, a chart that revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely b ...
Opakování z minulého cvičení
... renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational influence of a passing star will disturb the Oort cloud and send comets in towards the Sun, where the gravitational ...
... renewed by 'new' comets picked up by the Solar System when it passes through giant molecular clouds. The Oort cloud may contain 100 billion comets. From time to time, the gravitational influence of a passing star will disturb the Oort cloud and send comets in towards the Sun, where the gravitational ...
Chapter 17 Measuring the Stars
... Once many stars are plotted on an H–R diagram, 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, as this is where most stars are. Also indicated is the white dwarf region; these stars are hot but ...
... Once many stars are plotted on an H–R diagram, 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, as this is where most stars are. Also indicated is the white dwarf region; these stars are hot but ...
Microsoft Power Point version
... What is the most important property of a star? • A star’s most important property is its mass, which determines its luminosity and spectral type at each stage of its life. What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see distinctl ...
... What is the most important property of a star? • A star’s most important property is its mass, which determines its luminosity and spectral type at each stage of its life. What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see distinctl ...
16. Properties of Stars
... What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see distinctly. An eclipsing binary reveals its binary nature because of periodic dimming that occurs when one star eclipses the other as viewed from Earth. A spectroscopic binary revea ...
... What are the three major classes of binary star systems? • A visual binary is a pair of orbiting stars that we can see distinctly. An eclipsing binary reveals its binary nature because of periodic dimming that occurs when one star eclipses the other as viewed from Earth. A spectroscopic binary revea ...
Chapter 8: Stars
... the sky are called firstmagnitude stars. • The dimmest stars are called sixth-magnitude stars. ...
... the sky are called firstmagnitude stars. • The dimmest stars are called sixth-magnitude stars. ...
Lecture 9: Stellar Spectra
... A star’s spectrum uniquely locates the star within the overall sequence of stellar properties. Powerful tool for understanding the physics of stars. ...
... A star’s spectrum uniquely locates the star within the overall sequence of stellar properties. Powerful tool for understanding the physics of stars. ...
File
... An Average Star (low mass star) is condensed in a nebula and begins a nuclear reaction that causes hydrogen to form helium, releasing energy in the form of heat and light. A low mass star will stay in this MAIN SEQUENCE phase for a about 10 billion years, until it begins to use up all of its ...
... An Average Star (low mass star) is condensed in a nebula and begins a nuclear reaction that causes hydrogen to form helium, releasing energy in the form of heat and light. A low mass star will stay in this MAIN SEQUENCE phase for a about 10 billion years, until it begins to use up all of its ...
Stargazing
... There is actually a simple explanation. After much observation, scientists discoveredthewaystarsappeartousdependsonmorethantheiractualsize— it’s also about how far they are from us. Therefore, the further a star is from Earth,thesmalleritwillappeartous. ...
... There is actually a simple explanation. After much observation, scientists discoveredthewaystarsappeartousdependsonmorethantheiractualsize— it’s also about how far they are from us. Therefore, the further a star is from Earth,thesmalleritwillappeartous. ...
Exam 03
... A) Brightness: Higher luminosity class indicates a higher apparent magnitude, which actually means a dimmer star as viewed from Earth. B) Temperature: Stars with a higher luminosity class have a higher temperature. C) Mass: The higher the luminosity class, the larger the mass of the star. D) Size: L ...
... A) Brightness: Higher luminosity class indicates a higher apparent magnitude, which actually means a dimmer star as viewed from Earth. B) Temperature: Stars with a higher luminosity class have a higher temperature. C) Mass: The higher the luminosity class, the larger the mass of the star. D) Size: L ...
Unit 1
... appears to run slow, and the ship looks shorter – To an observer on the ship, the Earth appears to be moving in slow-motion, and its shape is distorted. ...
... appears to run slow, and the ship looks shorter – To an observer on the ship, the Earth appears to be moving in slow-motion, and its shape is distorted. ...
The Family of Stars
... Neutron stars can not exist with masses > 3 Msun We know of no mechanism to halt the collapse of a compact object with > 3 Msun. It will collapse into a single point – a singularity: ...
... Neutron stars can not exist with masses > 3 Msun We know of no mechanism to halt the collapse of a compact object with > 3 Msun. It will collapse into a single point – a singularity: ...
Reach for the Stars – Div. B
... from the nebula’s extended clouds of gas and dust. Located 22 000 light-years away from the Sun, it is the closest region of this kind known in our galaxy, providing astronomers with a local test bed for studying the intense star formation processes, very common in other galaxies, but hard to observ ...
... from the nebula’s extended clouds of gas and dust. Located 22 000 light-years away from the Sun, it is the closest region of this kind known in our galaxy, providing astronomers with a local test bed for studying the intense star formation processes, very common in other galaxies, but hard to observ ...
Down Under from North Florida
... Przybylsk (1913–1984), some say this star has the most unusual of all stellar spectra! Spectral lines originally suggested HD 101065 had features of a solar spectrum but also had very strong lines of ionized lanthanides. However, the apparent absence of spectral lines of iron, common in cooler stars ...
... Przybylsk (1913–1984), some say this star has the most unusual of all stellar spectra! Spectral lines originally suggested HD 101065 had features of a solar spectrum but also had very strong lines of ionized lanthanides. However, the apparent absence of spectral lines of iron, common in cooler stars ...
CONSTELLATION CEPHEUS, KING OF ETHIOPIA Cepheus is a
... descent from the nymph Io, one of the loves of Zeus – and having Zeus as a relative was always an advantage when it came to being commemorated among the constellations. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. ...
... descent from the nymph Io, one of the loves of Zeus – and having Zeus as a relative was always an advantage when it came to being commemorated among the constellations. It was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. ...
ppt - UCL
... low state. From the U,B,V brightness and colours we infer that the companion is a subgiant of mass 4.5 < M < 5.0 Msun and temperature 15500 < Teff < 16500 (spectral type B5 IV). No significant wind is expected from such a star, in agreement with the low column density inferred from the X-ray data. T ...
... low state. From the U,B,V brightness and colours we infer that the companion is a subgiant of mass 4.5 < M < 5.0 Msun and temperature 15500 < Teff < 16500 (spectral type B5 IV). No significant wind is expected from such a star, in agreement with the low column density inferred from the X-ray data. T ...
chapter 2
... also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest science in the world. It was the Greeks who introduced Astronomy as a science of studying ...
... also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest science in the world. It was the Greeks who introduced Astronomy as a science of studying ...
Slide 1
... Recall that the spectroscopic sequence is O, B, A, F, G, K, M from hottest to coolest. You use the method of spectroscopic parallax to determine the distance to an F2 star as 43 pc. You later discover that the star has been misclassified and is actually a type G7. The distance to the star must ther ...
... Recall that the spectroscopic sequence is O, B, A, F, G, K, M from hottest to coolest. You use the method of spectroscopic parallax to determine the distance to an F2 star as 43 pc. You later discover that the star has been misclassified and is actually a type G7. The distance to the star must ther ...
White Dwarfs
... temperatures to ignite elements heavier than carbon in their core become white dwarfs. • Hot exposed core of an evolved low mass star. • Supported by electron degeneracy pressure. This is the tendency of atoms to resist compression. • The more massive a white dwarf, the smaller it is. A solar mas ...
... temperatures to ignite elements heavier than carbon in their core become white dwarfs. • Hot exposed core of an evolved low mass star. • Supported by electron degeneracy pressure. This is the tendency of atoms to resist compression. • The more massive a white dwarf, the smaller it is. A solar mas ...
NAME_______________________________________
... C) standard candles D) the flux capacitor ____36. The flux of a star diminishes by an amount proportional to the inverse of the square of the distance from that star. TRUE FALSE ...
... C) standard candles D) the flux capacitor ____36. The flux of a star diminishes by an amount proportional to the inverse of the square of the distance from that star. TRUE FALSE ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.