The Life Cycle of a Star
... This has been a big cheeze production! If there are any additions or corrections this presentation needs in order to be accepted, you can reach me at the following: ...
... This has been a big cheeze production! If there are any additions or corrections this presentation needs in order to be accepted, you can reach me at the following: ...
Document
... • How do we know the distance to stars and clusters in our galaxy? • Trigonometric parallax good out to 100 pc. • We believe galaxy is ~30 kpc wide. • How do we know? ...
... • How do we know the distance to stars and clusters in our galaxy? • Trigonometric parallax good out to 100 pc. • We believe galaxy is ~30 kpc wide. • How do we know? ...
Milky Way
... how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
... how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are denoted by a roman numeral (V, III, I,…). ...
For stars
... By comparing the apparent (m) and absolute magnitude (M) numbers we can estimate a stars distance from Earth. • When m = M, then the star is located exactly 10 pc away • When mM, then the ...
... By comparing the apparent (m) and absolute magnitude (M) numbers we can estimate a stars distance from Earth. • When m = M, then the star is located exactly 10 pc away • When m
Introduction to Stars: Their Properties
... 3. The Sun is the brightest star in the sky, with an apparent magnitude of about -26.5 Sirius is next in line, with an apparent magnitude of -1.5; how many times brighter is the Sun than Sirius? a) 25 ...
... 3. The Sun is the brightest star in the sky, with an apparent magnitude of about -26.5 Sirius is next in line, with an apparent magnitude of -1.5; how many times brighter is the Sun than Sirius? a) 25 ...
Geometry Questions
... 1. What is the acceleration due to gravity on the surface of a white dwarf? Let the mass of a white dwarf by approximately 1 solar mass, or 2.0 x 1030 kg, and its radius be approximately that of Earth or 6.4 x 106 m. (J63) 2. What is the acceleration due to gravity on the surface of a neutron star? ...
... 1. What is the acceleration due to gravity on the surface of a white dwarf? Let the mass of a white dwarf by approximately 1 solar mass, or 2.0 x 1030 kg, and its radius be approximately that of Earth or 6.4 x 106 m. (J63) 2. What is the acceleration due to gravity on the surface of a neutron star? ...
An Introduction to Astronomy and Cosmology
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
... Eve or the 30th June. Since the time definition was changed, 22 leap seconds have had to be added, about one every 18 months, but there were none between 1998 and 2005 showing the slowdown is not particularly regular. Leap seconds are somewhat of a nuisance for systems such as the Global Positioning ...
1 - BYU Physics and Astronomy
... 220×106, (d) 4.6×109, (e) 10×109. 55. The cosmic microwave background has a spectral profile shaped like that of a black body of temperature 2.73K because (a) that is the temperature of the gas which emitted it, (b) that is the temperature of the intergalactic medium through which it has passed, (c) ...
... 220×106, (d) 4.6×109, (e) 10×109. 55. The cosmic microwave background has a spectral profile shaped like that of a black body of temperature 2.73K because (a) that is the temperature of the gas which emitted it, (b) that is the temperature of the intergalactic medium through which it has passed, (c) ...
Exam Study Guide
... 82. How is a white dwarf formed? 83. Why are bright blue stars an indicator of recent star formation? 84. Why are star clusters so useful in testing theories of stellar evolution? 85. What is the proper order of the following objects in terms of increasing size? brown dwarf, G-type main sequence sta ...
... 82. How is a white dwarf formed? 83. Why are bright blue stars an indicator of recent star formation? 84. Why are star clusters so useful in testing theories of stellar evolution? 85. What is the proper order of the following objects in terms of increasing size? brown dwarf, G-type main sequence sta ...
Extrasolar planets
... For the Earth : v = 0.09 m/s and T = 1 year With a detection limit of 3 m/s, this makes Earth-like planets very hard to find. The first discovery of any extrasolar planet was in 1995 for the star 51 Peg. Now more than 120 Jupiter-size planets have been found around other stars using this method. The ...
... For the Earth : v = 0.09 m/s and T = 1 year With a detection limit of 3 m/s, this makes Earth-like planets very hard to find. The first discovery of any extrasolar planet was in 1995 for the star 51 Peg. Now more than 120 Jupiter-size planets have been found around other stars using this method. The ...
2014 Joseph E. Pesce, Ph.D. 1 Astro 113 Final Exam Review 1. What
... 23. What is the role of collisions between galaxies in the formation and evolution of galaxies? 24. What is cosmological redshift? 25. An object at room temperature (T = 300 degrees Kelvin) emits ...
... 23. What is the role of collisions between galaxies in the formation and evolution of galaxies? 24. What is cosmological redshift? 25. An object at room temperature (T = 300 degrees Kelvin) emits ...
Friday, August 28 - Otterbein University
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
... • Their positions are related because – the direction of Polaris defines the rotation axis of the celestial sphere – The sun is somewhere on the sphere – From a “skewed” perspective everything on the sphere culminates on the meridian ...
1 - Stellar Life Cycle
... usually shown on left-hand Y-axis Temperature/Color Spectral Class shown on X-axis ...
... usually shown on left-hand Y-axis Temperature/Color Spectral Class shown on X-axis ...
Wednesday, April 2 - Otterbein University
... Finding the absolute Magnitude • To figure out absolute magnitude, we need to know the distance to the star • Then do the following Gedankenexperiment: – In your mind, put the star from its actual position to a position 10 pc away – If a star is actually closer than 10pc, its absolute magnitude wil ...
... Finding the absolute Magnitude • To figure out absolute magnitude, we need to know the distance to the star • Then do the following Gedankenexperiment: – In your mind, put the star from its actual position to a position 10 pc away – If a star is actually closer than 10pc, its absolute magnitude wil ...
Slide 1
... The Suns Absorption Spectrum from 420 – 430 nm. (TOP) The emission spectrum of Iron (Bottom) ...
... The Suns Absorption Spectrum from 420 – 430 nm. (TOP) The emission spectrum of Iron (Bottom) ...
LESSON 4, STARS
... viewed from two locations is called parallax. Astronomers use parallax to find the distance ...
... viewed from two locations is called parallax. Astronomers use parallax to find the distance ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.