AST 443
... 5. The Sun will reside on the main sequence for 1010 years. If the luminosity of a main-sequence star is proportional to the fourth power of the star’s mass, what mass star is just now leaving the main sequence in a cluster that formed (a) ...
... 5. The Sun will reside on the main sequence for 1010 years. If the luminosity of a main-sequence star is proportional to the fourth power of the star’s mass, what mass star is just now leaving the main sequence in a cluster that formed (a) ...
Early history of astronomy
... noon to the next, about 24 hours • Sidereal day – the time it takes for Earth to make one complete rotation (360º) with respect to a star other than the Sun – 23 hours, 56 minutes, 4 seconds Figure 21.19 ...
... noon to the next, about 24 hours • Sidereal day – the time it takes for Earth to make one complete rotation (360º) with respect to a star other than the Sun – 23 hours, 56 minutes, 4 seconds Figure 21.19 ...
Star Life Cycles WS
... 5. A red giant is (hotter, cooler) due the (contraction, expansion) of gases in the outer layer. 6. At the end of its life, a low mass star (1.4 SM) shrinks to become a ______________. 7. At the end, a very MASSIVE star will follow sequence: a. white dwarf, planetary nebula, neutron star b. red gian ...
... 5. A red giant is (hotter, cooler) due the (contraction, expansion) of gases in the outer layer. 6. At the end of its life, a low mass star (1.4 SM) shrinks to become a ______________. 7. At the end, a very MASSIVE star will follow sequence: a. white dwarf, planetary nebula, neutron star b. red gian ...
Cat`s EyE - Chandra X
... WHO: The Cat’s Eye, officially known as NGC 6543, is a so-called planetary nebula, a glowing shell of gas and dust that forms when Sun-like stars die. ...
... WHO: The Cat’s Eye, officially known as NGC 6543, is a so-called planetary nebula, a glowing shell of gas and dust that forms when Sun-like stars die. ...
09astrophysics_2007Nov
... If we can measure the color of a star, we can calculate its temperature (Wien’s Law) Measure magnitude of star through color filters Color Index=C.I. = B-V is measure of temperature of star. Standard Filters ...
... If we can measure the color of a star, we can calculate its temperature (Wien’s Law) Measure magnitude of star through color filters Color Index=C.I. = B-V is measure of temperature of star. Standard Filters ...
May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
chapter 17 measuring the stars
... (including the Sun itself) ~The color of any 24, 000 K object glows white o White Dwarf: A dwarf star with sufficiently high surface temperature that it glows white ...
... (including the Sun itself) ~The color of any 24, 000 K object glows white o White Dwarf: A dwarf star with sufficiently high surface temperature that it glows white ...
Quiz Questions
... 3. We feel sure that the sun is now fueled by nuclear energy rather than by energy left over from its gravitational contraction because A. we don't see the sun contracting B. the spectrum looks like nuclear production C. the energy from gravitational contraction can't last long enough D. we see heli ...
... 3. We feel sure that the sun is now fueled by nuclear energy rather than by energy left over from its gravitational contraction because A. we don't see the sun contracting B. the spectrum looks like nuclear production C. the energy from gravitational contraction can't last long enough D. we see heli ...
Stars - Independence High School
... • Seasonal- Orbit equator and can only be seen during certain times of the year ...
... • Seasonal- Orbit equator and can only be seen during certain times of the year ...
AST 207 Homework 5 Due 14 October 2011
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
... 2. Life on Deneb. Here you will find out what it means to live near a giant like Deneb. Recall that the luminosity of a star, where T is its temperature and R is its radius. Star ...
9ol.ASTRONOMY 1 ... Identify Terms - Matching (20 @ 1 point each =...
... 38. Be familiar with an H-R Diagram, i.e. where are stars with the smallest radius found? Where are the hottest stars found? The coolest? Where on the diagram are 90% of all stars found? Where is our Sun on the diagram? 39.In a binary system, would the more massive star be closer to the center of ma ...
... 38. Be familiar with an H-R Diagram, i.e. where are stars with the smallest radius found? Where are the hottest stars found? The coolest? Where on the diagram are 90% of all stars found? Where is our Sun on the diagram? 39.In a binary system, would the more massive star be closer to the center of ma ...
ASTR2050 Spring 2005 •
... A certain telescope allows you to see a million times more light than your naked eye. What is the faintest magnitude star that you can see now? ...
... A certain telescope allows you to see a million times more light than your naked eye. What is the faintest magnitude star that you can see now? ...
The Earth in Perspective
... Beyond our sun ........................................ It's a big universe. Antares is the 15th brightest star in the sky. It is more than 1000 light years away. ...
... Beyond our sun ........................................ It's a big universe. Antares is the 15th brightest star in the sky. It is more than 1000 light years away. ...
Characteristics of Stars
... 4. In relation to the brightness of other stars how bright is the Sun? What are the three characteristics astronomers use to classify stars? 5. What size is the Sun compared to other stars? What are very large stars called? How far would the supergiant Betelgeuse reach if it were to replace our Sun? ...
... 4. In relation to the brightness of other stars how bright is the Sun? What are the three characteristics astronomers use to classify stars? 5. What size is the Sun compared to other stars? What are very large stars called? How far would the supergiant Betelgeuse reach if it were to replace our Sun? ...
Distance measurement in astronomy
... Cepheid variables Cepheid variables are one particular type of variable star (one whose brightness changes with time) called after delta Cephei, the first star of this type to be observed. The variation in brightness of this star was discovered by John Goodricke in 1784. Goodricke lived in York and ...
... Cepheid variables Cepheid variables are one particular type of variable star (one whose brightness changes with time) called after delta Cephei, the first star of this type to be observed. The variation in brightness of this star was discovered by John Goodricke in 1784. Goodricke lived in York and ...
PPT - University of Delaware
... • What I do – Study winds and material ejected from hot, massive stars; specifically Eta Carinae. • Why I do it – It’s fun and interesting, but also important in order to understand the universe we live in. • Why its important – Stars are responsible for generating all of the heavy elements. Winds r ...
... • What I do – Study winds and material ejected from hot, massive stars; specifically Eta Carinae. • Why I do it – It’s fun and interesting, but also important in order to understand the universe we live in. • Why its important – Stars are responsible for generating all of the heavy elements. Winds r ...
Astronomers classify stars according to their physical characteristics
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
... •A star’s _apparent_ brightness depends upon how bright it _actually is and its _distance_ from Earth. •A star’s actual brightness (or _absolute magnitude) usually depends on the star’s _size_ and temperature__. •Because stars with _more mass ___ have more __self _gravity, they tend to have _higher_ ...
The Life Cycle of Stars
... mass to other stars like Sirius, and Proxima Centauri. Based on its mass, will our sun be around for a while? Realize that once our Sun starts to run out of hydrogen fuel and has exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to env ...
... mass to other stars like Sirius, and Proxima Centauri. Based on its mass, will our sun be around for a while? Realize that once our Sun starts to run out of hydrogen fuel and has exhausted its ability to fuse other elements like carbon and oxygen, it will become a red giant and expand in size to env ...
Star project
... • Stars are born when clouds of dust and gas have a gravitational disturbance, like a nearby supernova. Clumps begin to form in the cloud, and compress and heat up. Eventually, a protostar is formed, which is the core of the star. • The protostar heats up so much and collects so much dust and gas th ...
... • Stars are born when clouds of dust and gas have a gravitational disturbance, like a nearby supernova. Clumps begin to form in the cloud, and compress and heat up. Eventually, a protostar is formed, which is the core of the star. • The protostar heats up so much and collects so much dust and gas th ...
Stars are classified according to their color
... between the stars. • Distance that light travels in one year. Its about 9.5 million million kilometers. That is not a typo! ...
... between the stars. • Distance that light travels in one year. Its about 9.5 million million kilometers. That is not a typo! ...
Astronomy 120
... 13. On the Hertzsprung-Russell (HR) diagram on the back of this page, plot points representing the Luminosity and Surface Temperature of each of the 16 brightest stars (in the northern hemisphere) on your list. (The values of luminosity (in units of the Sun's luminosity) and the surface temperature ...
... 13. On the Hertzsprung-Russell (HR) diagram on the back of this page, plot points representing the Luminosity and Surface Temperature of each of the 16 brightest stars (in the northern hemisphere) on your list. (The values of luminosity (in units of the Sun's luminosity) and the surface temperature ...
coSmoS in youR PockET
... planets that are not within our Solar System. These planets travel around other stars in our Galaxy. ...
... planets that are not within our Solar System. These planets travel around other stars in our Galaxy. ...
User`s Guide to the Sky Notes
... Some stars may have been included in more than one constellations, when constellations sometimes overlapped. “Modern” astronomers have added 40 constellations as cultures have spread across the Earth, and separated overlapping constellations. In 1928, the International Astronomical Union (IAU) offic ...
... Some stars may have been included in more than one constellations, when constellations sometimes overlapped. “Modern” astronomers have added 40 constellations as cultures have spread across the Earth, and separated overlapping constellations. In 1928, the International Astronomical Union (IAU) offic ...
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.