Study Guide for Stars and Galaxies Quiz ANSWER KEY
... I. Characteristics of Stars (Chapter 4, Section 2) 1. Identify the 5 characteristics used to classify stars: a. color b. temperature c. chemical composition d. size e. brightness 2. Which 2 things does the brightness of a star depend on? a. size b. temperature 3. What is a lightyear? Th ...
... I. Characteristics of Stars (Chapter 4, Section 2) 1. Identify the 5 characteristics used to classify stars: a. color b. temperature c. chemical composition d. size e. brightness 2. Which 2 things does the brightness of a star depend on? a. size b. temperature 3. What is a lightyear? Th ...
Stars in our Galaxy
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
September Evening Skies
... Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled on the map. The double star (Dbl) at the bend of the handle of the Big Dipper is easily detected. Much more difficult is the double star near Vega in Lyra. ...
... Vega, Capella, Altair, Antares, Fomalhaut, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled on the map. The double star (Dbl) at the bend of the handle of the Big Dipper is easily detected. Much more difficult is the double star near Vega in Lyra. ...
Science 9 Unit 5: Space Name:
... Parallax is the apparent shift in position of a nearby object when the object is viewed from two different places. Astronomers use a star’s parallax to determine what angles to use when they triangulate the star’s distance from the Earth. The larger the baseline, the more accurate the result. The lo ...
... Parallax is the apparent shift in position of a nearby object when the object is viewed from two different places. Astronomers use a star’s parallax to determine what angles to use when they triangulate the star’s distance from the Earth. The larger the baseline, the more accurate the result. The lo ...
Citizen Sky Epsilon Aurigae Script for Fulldome Planetariums
... To answer our questions, we need more observations. From a distance, we cannot see the details of the Epsilon Aurigae system. Instead, it reveals itself as only a single point of light in the starry night sky. By making repeated observations of the star while it undergoes an eclipse, we can measure ...
... To answer our questions, we need more observations. From a distance, we cannot see the details of the Epsilon Aurigae system. Instead, it reveals itself as only a single point of light in the starry night sky. By making repeated observations of the star while it undergoes an eclipse, we can measure ...
Radio-quiet Isolated Neutron Stars
... Detected in the RASS between 1990/09/14~1990/10/02. Identified with the 1992/10/16 PSPC data. No variability at levels greater than ~1% in 1hr, or <30% on timescale up to 15 years. ...
... Detected in the RASS between 1990/09/14~1990/10/02. Identified with the 1992/10/16 PSPC data. No variability at levels greater than ~1% in 1hr, or <30% on timescale up to 15 years. ...
Name
... The apparent magnitude of stars was first recorded by the Greek astronomer Hipparchus about 160 B.C. Hipparchus grouped stars according to their brightness or magnitude. He called the twenty brightest stars first magnitude stars. Stars half that bright were second magnitude. Third magnitude stars we ...
... The apparent magnitude of stars was first recorded by the Greek astronomer Hipparchus about 160 B.C. Hipparchus grouped stars according to their brightness or magnitude. He called the twenty brightest stars first magnitude stars. Stars half that bright were second magnitude. Third magnitude stars we ...
How far away are the Stars?
... • First mark position A directly opposite tree. • Move a known distance along the ‘baseline’. • Measure ABC • Deduce unknown distance via trigonometry ...
... • First mark position A directly opposite tree. • Move a known distance along the ‘baseline’. • Measure ABC • Deduce unknown distance via trigonometry ...
Spectra of stars
... The continuous spectrum originates from the surface of the star and the absorption lines are produced when light passes upwards and outwards through the tenuous upper layers of the star. By looking at the spectrum of a star astronomers can determine: (a) the temperature of the star (b) the velocity ...
... The continuous spectrum originates from the surface of the star and the absorption lines are produced when light passes upwards and outwards through the tenuous upper layers of the star. By looking at the spectrum of a star astronomers can determine: (a) the temperature of the star (b) the velocity ...
Beyond the Solar System
... If you go out at night and look at the sky you are likely to think that you can see a very large number of stars. In fact even on a clear night you only see about three thousand stars at a time, during a whole year you will only see about six thousand. On any night you will only see some of the star ...
... If you go out at night and look at the sky you are likely to think that you can see a very large number of stars. In fact even on a clear night you only see about three thousand stars at a time, during a whole year you will only see about six thousand. On any night you will only see some of the star ...
Document
... b. Which star looks most red? GL 725A Most blue? Achernar c. Which star is the most luminous? Canopus Least luminous? GL 725A d. Which star appears the brightest? Canopus Faintest? GL 725A e. Which star’s spectrum shows the strongest Balmer lines of Hydrogen? Vega f. Which star’s spectrum most resem ...
... b. Which star looks most red? GL 725A Most blue? Achernar c. Which star is the most luminous? Canopus Least luminous? GL 725A d. Which star appears the brightest? Canopus Faintest? GL 725A e. Which star’s spectrum shows the strongest Balmer lines of Hydrogen? Vega f. Which star’s spectrum most resem ...
The Danger of Deadly Cosmic Explosions
... radiation • Penetrates underground and underseas. • Equivalent to 1 kiloton TNT / km2 over earth surface • Kills everything exposed. • Destroys atmosphere, brings on nuclear winter. ...
... radiation • Penetrates underground and underseas. • Equivalent to 1 kiloton TNT / km2 over earth surface • Kills everything exposed. • Destroys atmosphere, brings on nuclear winter. ...
How Stars Form Powerpoint
... Stars of Other Masses Remember - Main Sequence is a band, rather than a line, because stars of the same mass can have different compositions. Most important: Stars do not move along the Main Sequence! Once they reach it, they are in equilibrium and do not move until their fuel begins to run out. ...
... Stars of Other Masses Remember - Main Sequence is a band, rather than a line, because stars of the same mass can have different compositions. Most important: Stars do not move along the Main Sequence! Once they reach it, they are in equilibrium and do not move until their fuel begins to run out. ...
Astrometry: Revealing the Other Two Dimensions of
... hundred stars. At no point in astronomical science is fuller knowledge more desirable, more pressingly urgent, than in the subject of stellar distances.” ...
... hundred stars. At no point in astronomical science is fuller knowledge more desirable, more pressingly urgent, than in the subject of stellar distances.” ...
IB_Op_F_04 - Effectsmeister
... early 1900's. It is sometimes called a color - magnitude diagram. Why is this ( or why is this not) an appropriate name for a plot of magnitude versus spectral class? Our star, the Sun, is a G2 spectral class star with an absolute magnitude of 4.8 . How does it compare to the locations of the near s ...
... early 1900's. It is sometimes called a color - magnitude diagram. Why is this ( or why is this not) an appropriate name for a plot of magnitude versus spectral class? Our star, the Sun, is a G2 spectral class star with an absolute magnitude of 4.8 . How does it compare to the locations of the near s ...
An introduction to the HR diagram File
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
THE PHYSICAL CHARACTERIZATION OF THE STARS 1
... the analysis of the light curve yields the inclination (among other parameters), and therefore the absolute individual masses can be derived. The double-lined eclipsing binaries are extremely important, since they are the only case providing simultaneous determinations of individual masses and radii ...
... the analysis of the light curve yields the inclination (among other parameters), and therefore the absolute individual masses can be derived. The double-lined eclipsing binaries are extremely important, since they are the only case providing simultaneous determinations of individual masses and radii ...
Aspire: Star Life Cycle - Easy Peasy All-in
... Our Sun Vega Sirius B I. Click on the image to start the next activity. ...
... Our Sun Vega Sirius B I. Click on the image to start the next activity. ...
Night Sky Checklist April–May–June Unaided Eye Astronomy
... Regulus was one of the Royal Stars of ancient Mesopotamia 5000 years ago, not only because it is fairly bright but also because at that time its position in the sky was near that of the sun at the summer solstice. It can be found at the base of the backward question mark in Leo. Denebola is a modera ...
... Regulus was one of the Royal Stars of ancient Mesopotamia 5000 years ago, not only because it is fairly bright but also because at that time its position in the sky was near that of the sun at the summer solstice. It can be found at the base of the backward question mark in Leo. Denebola is a modera ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.