15.3 The Lives of Stars
... A star is born Stars are born in nebula (a vast cloud of gas and dust) 2. Gravity pulls gas together 3. When nuclear fusion takes place a star is born 4. The youngest stars are called protostars ...
... A star is born Stars are born in nebula (a vast cloud of gas and dust) 2. Gravity pulls gas together 3. When nuclear fusion takes place a star is born 4. The youngest stars are called protostars ...
CBradleyLoutl
... There are 2 types of zones in these clouds: -H I zones, containing neutral hydrogen, with a temperature often around 100K -H II zones, containing ionized hydrogen, with a temperature often around 10,000K. The clouds absorb ultraviolet light and retransmitted it as visible/IR light. These clouds are ...
... There are 2 types of zones in these clouds: -H I zones, containing neutral hydrogen, with a temperature often around 100K -H II zones, containing ionized hydrogen, with a temperature often around 10,000K. The clouds absorb ultraviolet light and retransmitted it as visible/IR light. These clouds are ...
Astronomy
... Astronomy Galaxies Test Name: Directions: Answer the following questions with the most correct answers. TRUE/FALSE: 1. _____ Hubble classified galaxies 2. _____ There are three main classifications of galaxies 3. _____ Elliptical galaxies have little or no star formation 4. _____ Elliptical galaxies ...
... Astronomy Galaxies Test Name: Directions: Answer the following questions with the most correct answers. TRUE/FALSE: 1. _____ Hubble classified galaxies 2. _____ There are three main classifications of galaxies 3. _____ Elliptical galaxies have little or no star formation 4. _____ Elliptical galaxies ...
Evidence for the Big Bang
... Universe is 24% He (by mass) Stars fuse hydrogen into helium In 14 billion years, stars have not burned hot enough, or long enough to make this much helium The oldest stars (11 billion years) also have ~ 24% He so this He cannot have been made in stars! Big Bang - in early history the whole univ ...
... Universe is 24% He (by mass) Stars fuse hydrogen into helium In 14 billion years, stars have not burned hot enough, or long enough to make this much helium The oldest stars (11 billion years) also have ~ 24% He so this He cannot have been made in stars! Big Bang - in early history the whole univ ...
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... What does a light wave look like? To answer this, must first know how light is produced. • Start with an electron has an electric field (example is static cling; or battery) ...
... What does a light wave look like? To answer this, must first know how light is produced. • Start with an electron has an electric field (example is static cling; or battery) ...
State one piece of evidence supporting the wave model of light and
... 3. Which photons have greater energy, those associated with microwaves or those associated with visible light? Ans: Visible light, because visible light has a higher frequency and frequency is proportional to energy. 4. Which band of the electromagnetic spectrum has the following? a. the lowest freq ...
... 3. Which photons have greater energy, those associated with microwaves or those associated with visible light? Ans: Visible light, because visible light has a higher frequency and frequency is proportional to energy. 4. Which band of the electromagnetic spectrum has the following? a. the lowest freq ...
Then another Big Bang will occur and the
... As objects move away from the Earth they emit a Red Light called the Red Shift. This was seen using the Hubble Telescope. ...
... As objects move away from the Earth they emit a Red Light called the Red Shift. This was seen using the Hubble Telescope. ...
Diapositiva 1
... brightest stars, grouped in the famous Big Dipper asterism, are visible throughout the year in the northern hemisphere. Ursa Minor is a constellation of the northern sky. It is especially known because within it lies the north celestial pole, although its position is subject to a continuous, slow mo ...
... brightest stars, grouped in the famous Big Dipper asterism, are visible throughout the year in the northern hemisphere. Ursa Minor is a constellation of the northern sky. It is especially known because within it lies the north celestial pole, although its position is subject to a continuous, slow mo ...
Astronomy word grid
... 13. The furthest planet from the Sun 15. A type of telescope using a large mirror as the objective 16. The name of the point on an orbit closest to the Sun 17 A new star formed by a massive explosion of a star 19. The name of a telescope mounting with one axis parallel to that of the Earth 20. The c ...
... 13. The furthest planet from the Sun 15. A type of telescope using a large mirror as the objective 16. The name of the point on an orbit closest to the Sun 17 A new star formed by a massive explosion of a star 19. The name of a telescope mounting with one axis parallel to that of the Earth 20. The c ...
Weighing a galaxy
... To the left is an optical image of NGC 7531. Can you see a spiral galaxy shape, like shown in the presentation? EXERCISE: 1. Describe the image of NGC 7531. ...
... To the left is an optical image of NGC 7531. Can you see a spiral galaxy shape, like shown in the presentation? EXERCISE: 1. Describe the image of NGC 7531. ...
R. Bender (ESO)
... • ALMA will open a new window to sensitive, high resolution mm and sub-mm observations: >2007 ALMA can analyse the mm and submm continuum and thousands of molecular lines to characterize dust and gas in the universe (wavelength and spatial resolution complementary to Herschel). ALMA will provid ...
... • ALMA will open a new window to sensitive, high resolution mm and sub-mm observations: >2007 ALMA can analyse the mm and submm continuum and thousands of molecular lines to characterize dust and gas in the universe (wavelength and spatial resolution complementary to Herschel). ALMA will provid ...
parents_weekend_2006 - Astronomy at Swarthmore College
... Cohen, who studies massive stars and stellar xrays, and Eric Jensen, who studies star and planet formation. Physics professor Michael Brown studies magnetic phenomena in his laboratory, with applications to the Sun. At any given time, we have roughly half-a-dozen students working with us. ...
... Cohen, who studies massive stars and stellar xrays, and Eric Jensen, who studies star and planet formation. Physics professor Michael Brown studies magnetic phenomena in his laboratory, with applications to the Sun. At any given time, we have roughly half-a-dozen students working with us. ...
universe - Northwest ISD Moodle
... most part, in a uniform manner, the motion apart has not all been at the same speed; instead it follows a pattern where galaxies that are further apart are moving more quickly. Speed of galactic motion is proportional to the separation between them. This, again, is known as Hubble’s Law. Astronomers ...
... most part, in a uniform manner, the motion apart has not all been at the same speed; instead it follows a pattern where galaxies that are further apart are moving more quickly. Speed of galactic motion is proportional to the separation between them. This, again, is known as Hubble’s Law. Astronomers ...
The Modern Origins Story: From the Big Bang to Habitable Planets
... Simulation of Collapse of Gas Cloud to Form Stars (Matthew Bate) ...
... Simulation of Collapse of Gas Cloud to Form Stars (Matthew Bate) ...
Abstract
... How a galaxy began its life is one of the greatest mysteries. The recent advances in observational technique allow us to directly observe the universe 10 billion years ago and find bright young objects there. Lyman α emitters1 have been recently discovered at redshifts greater than 3 (2.1109 yr aft ...
... How a galaxy began its life is one of the greatest mysteries. The recent advances in observational technique allow us to directly observe the universe 10 billion years ago and find bright young objects there. Lyman α emitters1 have been recently discovered at redshifts greater than 3 (2.1109 yr aft ...
Lecture 26 Pre-Main Sequence Evolution
... – The class of T Tauri stars was defined after the prototype T Tau • Irregular variability by as much as 3 magnitudes • Spectral types F5 to G5, with strong Ca II H & K emission lines as well as H Balmer lines • Low luminosity • Association with either bright or dark nebulosity • Later extend to all ...
... – The class of T Tauri stars was defined after the prototype T Tau • Irregular variability by as much as 3 magnitudes • Spectral types F5 to G5, with strong Ca II H & K emission lines as well as H Balmer lines • Low luminosity • Association with either bright or dark nebulosity • Later extend to all ...
Chapter22_New
... turn down the light and turn on a hydrogen discharge tube. The excitation mechanism may be different for HII regions, but the emission line output is the same. 2. The Shape and Size of the Galaxy I like to use the subject of the size and shape of the galaxy as an example of the way that science ofte ...
... turn down the light and turn on a hydrogen discharge tube. The excitation mechanism may be different for HII regions, but the emission line output is the same. 2. The Shape and Size of the Galaxy I like to use the subject of the size and shape of the galaxy as an example of the way that science ofte ...
ii. star clusters
... A. ________ clouds of dust/gas collapse to form stars ( _______ may trigger collapse) B. Usually, stars form in large ________ and disperse over time Ex/ our Sun C. Failed stars are called _______ _______ ...
... A. ________ clouds of dust/gas collapse to form stars ( _______ may trigger collapse) B. Usually, stars form in large ________ and disperse over time Ex/ our Sun C. Failed stars are called _______ _______ ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.