Volume 20 Number 10 September 2012
... In 2010, observers reported the most massive stars ever seen, - it exceeded what many astronomers thought was a maximum about 150 times the mass of the Sun. The heavyweight champs resided 160,000 light-years from Earth in Radcliffe 136, a dense star cluster within the Large Magellanic Cloud, the bri ...
... In 2010, observers reported the most massive stars ever seen, - it exceeded what many astronomers thought was a maximum about 150 times the mass of the Sun. The heavyweight champs resided 160,000 light-years from Earth in Radcliffe 136, a dense star cluster within the Large Magellanic Cloud, the bri ...
Night sky
... • Sidereal time is time kept relative to the stars (rather than the Sun). Local sidereal time = 0h when a star with RA = 0h crosses the meridian (like noon = Sun crossing the meridian). • RA uses time units to make it easy to compute the position of a star on the sky at any time of night. • A star t ...
... • Sidereal time is time kept relative to the stars (rather than the Sun). Local sidereal time = 0h when a star with RA = 0h crosses the meridian (like noon = Sun crossing the meridian). • RA uses time units to make it easy to compute the position of a star on the sky at any time of night. • A star t ...
solutions
... The limiting case (between bound and unbound) is simply when the total energy of the binary system, in the C.O.M. frame after the super-nova, is zero. ...
... The limiting case (between bound and unbound) is simply when the total energy of the binary system, in the C.O.M. frame after the super-nova, is zero. ...
Double Stars in Scorpio`s Claws
... but you should be able to see two dim red stars that form a line with brighter ρ Scorpii between them. ...
... but you should be able to see two dim red stars that form a line with brighter ρ Scorpii between them. ...
observingopenclusters-2-2-1
... to the Sun Slide your scope or binoculars parallel to the dog’s back and then move west of that line. You will pick up a large rich field of stars – Open Cluster M41 Procyon (Canis Minor) Locate next large and (also close) Procyon This points the way to 2 very different open clusters in Monocerous, ...
... to the Sun Slide your scope or binoculars parallel to the dog’s back and then move west of that line. You will pick up a large rich field of stars – Open Cluster M41 Procyon (Canis Minor) Locate next large and (also close) Procyon This points the way to 2 very different open clusters in Monocerous, ...
Ay 122a Fall 2012 – HOMEWORK #1
... 1. Simple Extinction Consider the atmosphere of the Earth as a plane-parallel absorbing medium (ignore any emission and also line absorption). A particular star, seen overhead on a given night, has an apparent magnitude mV = 3 mag. After several hours the same star is at a zenith angle θ=60◦ and has ...
... 1. Simple Extinction Consider the atmosphere of the Earth as a plane-parallel absorbing medium (ignore any emission and also line absorption). A particular star, seen overhead on a given night, has an apparent magnitude mV = 3 mag. After several hours the same star is at a zenith angle θ=60◦ and has ...
Name _________ Date _____________ Period ______ Skills
... d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yellow. b. orange. c. red. d. blue. 20. Early astronomers called the brightest stars in the sky ______________________ stars. ...
... d. their size. _____ 18. Stars are now classified by a. their elements. b. their temperature. c. their age. d. their size. _____ 19. Class O stars, the hottest stars, are a. yellow. b. orange. c. red. d. blue. 20. Early astronomers called the brightest stars in the sky ______________________ stars. ...
Slide 1
... We calculated the age to be between 12 to 14 billion years old It is 25,000 light years away from Earth ...
... We calculated the age to be between 12 to 14 billion years old It is 25,000 light years away from Earth ...
AST 207 7 Homew
... m sequencce because theey all already used up theirr There are no hotter stars on the main gen cores and d left the main n sequence. H Hotter stars usse up their fuel faster. hydrog c. Stars with w a color B-V=0.6 span a range of 5 m magnitudes. (22 pts.) What pproperty of thee stars accoun nts for ...
... m sequencce because theey all already used up theirr There are no hotter stars on the main gen cores and d left the main n sequence. H Hotter stars usse up their fuel faster. hydrog c. Stars with w a color B-V=0.6 span a range of 5 m magnitudes. (22 pts.) What pproperty of thee stars accoun nts for ...
Astrophysics E1. This question is about stars.
... M10/4/PHYSI/SP3/ENG/TZ2/XX Option E — Astrophysics E1. This question is about the relative population density of stars and galaxies. The number of stars around the Sun, within a distance of 17 ly, is 75. The number of galaxies in the local group, within a distance of 4.0 x 106 ly from the Sun, is 26 ...
... M10/4/PHYSI/SP3/ENG/TZ2/XX Option E — Astrophysics E1. This question is about the relative population density of stars and galaxies. The number of stars around the Sun, within a distance of 17 ly, is 75. The number of galaxies in the local group, within a distance of 4.0 x 106 ly from the Sun, is 26 ...
1” “Sky-Notes” of the Open University Astronomy Club. April 2005
... NGC2903 (8.9) sg. A spiral galaxy inclined to our line of sight. One of the brightest galaxies in Leo it is surprisingly not a Messier object. NGC3190 (11.0) sg and NGC3193 (10.9) eg. Pair of galaxies located mid-way between and . NGC3226 (11.4) and NGC3227 (10.8) about 1o east of form a close ...
... NGC2903 (8.9) sg. A spiral galaxy inclined to our line of sight. One of the brightest galaxies in Leo it is surprisingly not a Messier object. NGC3190 (11.0) sg and NGC3193 (10.9) eg. Pair of galaxies located mid-way between and . NGC3226 (11.4) and NGC3227 (10.8) about 1o east of form a close ...
The Northern sky - Visit Isle of Man
... seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find the Plough and use the two stars at the end, (Merak & Dubhe) at edge of the plough’s bowl (these are ...
... seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find the Plough and use the two stars at the end, (Merak & Dubhe) at edge of the plough’s bowl (these are ...
Module G - U1_ L3 - Life Cycle of Stars
... • As a result, dense regions of gas and dust form within the nebula. • The densest regions, called dense cores, form new stars. • The temperature within dense cores increases for millions of years. • At about 10 million °C, the process of hydrogen nuclear fusion begins, marking the birth of a star. ...
... • As a result, dense regions of gas and dust form within the nebula. • The densest regions, called dense cores, form new stars. • The temperature within dense cores increases for millions of years. • At about 10 million °C, the process of hydrogen nuclear fusion begins, marking the birth of a star. ...
Star in a Box Worksheet - Beginning with solutions
... 2. When will the Sun be at its brightest? During the Asymptotic Giant Branch, when it is about 10,205.16 billion years old. 3. When will the Sun be at its hottest? During the Thermally-pulsing Asymptotic Giant Branch at 10209.76 billion years old. 4. In which stage of its life does the Sun spend t ...
... 2. When will the Sun be at its brightest? During the Asymptotic Giant Branch, when it is about 10,205.16 billion years old. 3. When will the Sun be at its hottest? During the Thermally-pulsing Asymptotic Giant Branch at 10209.76 billion years old. 4. In which stage of its life does the Sun spend t ...
Quantum Well Electron Gain Structures and Infrared
... (difference now <2) • Also, vmid assumes that the binary mass ratio q = 1.000 (not necessarily true!) • Model spectra q 1-5 (Lavine, Eikenberry, Smith) ...
... (difference now <2) • Also, vmid assumes that the binary mass ratio q = 1.000 (not necessarily true!) • Model spectra q 1-5 (Lavine, Eikenberry, Smith) ...
Exercise 4
... radiation curve. On the curve, there is a peak which shifts to shorter wavelength when the temperature of the blackbody increases. From the position of the peak, astronomers can deduce the surface temperature of the star. In general, the spectra of hot stars peak at shorter wavelengths and therefore ...
... radiation curve. On the curve, there is a peak which shifts to shorter wavelength when the temperature of the blackbody increases. From the position of the peak, astronomers can deduce the surface temperature of the star. In general, the spectra of hot stars peak at shorter wavelengths and therefore ...
Where to begin the adventure with variable stars?
... because they belong to constellations that are visible all year round in the northern hemisphere. They are located in relation to one another in the following way: ...
... because they belong to constellations that are visible all year round in the northern hemisphere. They are located in relation to one another in the following way: ...
Astronomy 110 Announcements: 11.1 Properties of Stars
... These two stars have about the same luminosity -which one appears brighter? A. Alpha Centauri B. The Sun ...
... These two stars have about the same luminosity -which one appears brighter? A. Alpha Centauri B. The Sun ...
1. Neutron stars 2. Black holes
... just formed outside the iron core into space: a Type 2 Supernova has occurred. The brightness of a supernova may rival the brightness of the entire galaxy in which it resides. This period is short ~ few days, maybe a month. ...
... just formed outside the iron core into space: a Type 2 Supernova has occurred. The brightness of a supernova may rival the brightness of the entire galaxy in which it resides. This period is short ~ few days, maybe a month. ...
Signs of the Zodiac: Capricorn
... Secunda Giedi (Alpha-2 Capricorni), which are separated by 0.11 degrees in the sky. Nashira γ Capricorni (Gamma Capricorni) is a blue-white A-type giant, approximately 139 light years distant. Its name is derived from the Arabic phrase for “bearer of good news.” It has an apparent magnitude of 3.69 ...
... Secunda Giedi (Alpha-2 Capricorni), which are separated by 0.11 degrees in the sky. Nashira γ Capricorni (Gamma Capricorni) is a blue-white A-type giant, approximately 139 light years distant. Its name is derived from the Arabic phrase for “bearer of good news.” It has an apparent magnitude of 3.69 ...
review_one - MSU Solar Physics
... Go to the following rooms, based on team number: Teams 1-33: EPS 103 Teams 34-66: Leon Johnson 339 Teams 67-100: Roberts 101 Understand and be prepared to explain the following: Unit 1 The three components to measuring radiation The difference between light gathering power and resolving power ...
... Go to the following rooms, based on team number: Teams 1-33: EPS 103 Teams 34-66: Leon Johnson 339 Teams 67-100: Roberts 101 Understand and be prepared to explain the following: Unit 1 The three components to measuring radiation The difference between light gathering power and resolving power ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.