Powerpoint of lecture 1
... choosing constant to make scale consistent with Hipparchus. Absolute magnitude M is defined as the apparent magnitude a star ...
... choosing constant to make scale consistent with Hipparchus. Absolute magnitude M is defined as the apparent magnitude a star ...
Lives of stars
... temperature will be higher, but it sill be very small (about size of the earth) so it will not emit as much light. Which letter represents this state of the sun? What do call this type of star? 10.Which letters are in its hydrostatic equilibrium or main sequence? 11.Which of the main sequence stars ...
... temperature will be higher, but it sill be very small (about size of the earth) so it will not emit as much light. Which letter represents this state of the sun? What do call this type of star? 10.Which letters are in its hydrostatic equilibrium or main sequence? 11.Which of the main sequence stars ...
The Night Sky This Month - Usk Astronomical Society
... Some say that the constellation of the Bull was depicted in caves by humans tens of thousands of years ago to the extent that even the Pleiades were shown. What is certain is that Taurus the Bull, with the Scorpion and the Lion, was portrayed over 6000 years ago in the Euphrates Valley, in ancient M ...
... Some say that the constellation of the Bull was depicted in caves by humans tens of thousands of years ago to the extent that even the Pleiades were shown. What is certain is that Taurus the Bull, with the Scorpion and the Lion, was portrayed over 6000 years ago in the Euphrates Valley, in ancient M ...
1” “Sky-Notes” of the Open University Astronomy Club. April 2006. 1
... periastron passage in the 1930’s has again been observed indicating the presence of an unseen companion in the system, hence the need for continuing observations. ...
... periastron passage in the 1930’s has again been observed indicating the presence of an unseen companion in the system, hence the need for continuing observations. ...
Characteristics of Stars ppt.
... Box open star cluster • Jewel This is an image of NGC 4755, the Jewel Box open star cluster. It is located in the constellation Crux and is 7,600 light-years from Earth. The cluster was described as a "superb piece of jewelry" in an early astronomical catalog, hence the popular name. ...
... Box open star cluster • Jewel This is an image of NGC 4755, the Jewel Box open star cluster. It is located in the constellation Crux and is 7,600 light-years from Earth. The cluster was described as a "superb piece of jewelry" in an early astronomical catalog, hence the popular name. ...
PowerPoint
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… ...
... Some Reasons for the great abundance of Low-Mass stars… 1) Obviously requires less material to make (many!) Low-Mass Stars, than High-Mass ones; 2) Even though High-Mass stars have more “fuel” (Hydrogen)… ...
Absolute magnitude
... Each of these light bulbs will appear to be the same brightness. 1000 times farther away ...
... Each of these light bulbs will appear to be the same brightness. 1000 times farther away ...
Chapter 19 Notes Stars Stars are bright balls of gas that are trillions
... i. Red and yellow are cool stars, like our sun ii. Blue and white are hot stars. c. Astronomers use an instrument called a spectrograph to break a star’s light into a spectrum i. Spectrum- a band of colors produced when white light passes through a prism. ii. When an element emits light, only some c ...
... i. Red and yellow are cool stars, like our sun ii. Blue and white are hot stars. c. Astronomers use an instrument called a spectrograph to break a star’s light into a spectrum i. Spectrum- a band of colors produced when white light passes through a prism. ii. When an element emits light, only some c ...
Unit 6--Astronomy
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
Virtual Sky II (Rev 10/11)
... place every day you will find the position of the Sun in the sky changes. Use the time panel to see the path traced out. What is the path traced out called? _____________ ...
... place every day you will find the position of the Sun in the sky changes. Use the time panel to see the path traced out. What is the path traced out called? _____________ ...
Ourdraft
... How can you tell if it’s in your cloud, and not a star in front of it? How can you tell that it’s not a distant galaxy? It’s important to remember that you can’t perceive depth in space; everything is so far away that every object looks like a point source, a tiny dot of light. And it could be a cer ...
... How can you tell if it’s in your cloud, and not a star in front of it? How can you tell that it’s not a distant galaxy? It’s important to remember that you can’t perceive depth in space; everything is so far away that every object looks like a point source, a tiny dot of light. And it could be a cer ...
Starlight and What it Tells Us
... • How bright a star would be at a distance of 32.6 l.y. (10 parsecs) • Sun: 4.5 (inconspicuous naked-eye star) • Altair: 2.2 • Deneb: -7.1 (bright as crescent moon) – Note: Deneb - Altair about 10 magnitudes = 100 x 100 = 10,000 times ...
... • How bright a star would be at a distance of 32.6 l.y. (10 parsecs) • Sun: 4.5 (inconspicuous naked-eye star) • Altair: 2.2 • Deneb: -7.1 (bright as crescent moon) – Note: Deneb - Altair about 10 magnitudes = 100 x 100 = 10,000 times ...
proposed october viewing list
... CS = Carbon Star, * = Video imaging optional, ** = Video imaging recommended ...
... CS = Carbon Star, * = Video imaging optional, ** = Video imaging recommended ...
How many stars are visible to the naked eye in the night sky?
... Since the Canadian Astronaut Program was established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
... Since the Canadian Astronaut Program was established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
spectral-type
... In the 1900s, scientists didn’t know why stars had different line strengths. Not knowing the physical reason, they just classified them from A to O. A-stars had the strongest hydrogen lines. O-stars the weakest. Later they found many classifications were actually the same ...
... In the 1900s, scientists didn’t know why stars had different line strengths. Not knowing the physical reason, they just classified them from A to O. A-stars had the strongest hydrogen lines. O-stars the weakest. Later they found many classifications were actually the same ...
1 Ay 124 Winter 2014 – HOMEWORK #1
... Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit for the observations is mV = 24.0. The central ...
... Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit for the observations is mV = 24.0. The central ...
Document
... e. the time required for the small star to eclipse the larger star. 32. Red stars are _____ than blue stars a. hotter b. cooler c. larger d. smaller 33. When stars evolve they a. move up the main sequence b. move off the main sequence c. stay the same d. explode 34. What will be the end result of a ...
... e. the time required for the small star to eclipse the larger star. 32. Red stars are _____ than blue stars a. hotter b. cooler c. larger d. smaller 33. When stars evolve they a. move up the main sequence b. move off the main sequence c. stay the same d. explode 34. What will be the end result of a ...
Lesson 10 Red Shift
... "visual spectrum." In the visual spectrum, wavelength corresponds to colour. In other words, violet and red each have a characteristic range of wavelengths. In the visible spectrum, violet has the shortest wavelengths and red as the longest. Normally when we look at white light, such as from the Sun ...
... "visual spectrum." In the visual spectrum, wavelength corresponds to colour. In other words, violet and red each have a characteristic range of wavelengths. In the visible spectrum, violet has the shortest wavelengths and red as the longest. Normally when we look at white light, such as from the Sun ...
"Stars" Power Point notes
... • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
... • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
The Effects of Gravity
... fusing carbon into iron, then crushing electrons into protons to create neutrons. These neutron stars are ...
... fusing carbon into iron, then crushing electrons into protons to create neutrons. These neutron stars are ...
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.