www.NewYorkScienceTeacher.org/review
... observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving toward or away from Earth. These shifts are called blueshifts and redshifts. The larger the shift, the higher the speed of motion. The ...
... observer cause the spectral lines to shift in wavelength. Depending on whether the wavelength is shorter or longer, the observer can determine if the star is moving toward or away from Earth. These shifts are called blueshifts and redshifts. The larger the shift, the higher the speed of motion. The ...
Interstellar Medium (ISM) Interstellar Extinction Star Formation
... Summary: star formation on large scales 1) Stars form out of molecular gas which is assembled into dense molecular clouds in spiral arms. 2) Molecular clouds have a complex, often filamentary structure. Individual stars, or small groups, form from the smallest scale structures, cloud cores of size ...
... Summary: star formation on large scales 1) Stars form out of molecular gas which is assembled into dense molecular clouds in spiral arms. 2) Molecular clouds have a complex, often filamentary structure. Individual stars, or small groups, form from the smallest scale structures, cloud cores of size ...
Astronomical distance
... seconds, light hours or light years. Using that idea the Sun is 8½ light minutes away – that means it takes light 8½ minutes to reach us from the Sun. When we look at the Sun we are seeing it as it was 8½ minutes ago. Light from the nearest star takes over four years to reach us which means it is ov ...
... seconds, light hours or light years. Using that idea the Sun is 8½ light minutes away – that means it takes light 8½ minutes to reach us from the Sun. When we look at the Sun we are seeing it as it was 8½ minutes ago. Light from the nearest star takes over four years to reach us which means it is ov ...
COMPONENTS OF THE UNIVERSE
... Remember that gases, like all forms of matter, are composed of particles in motion. These particles are tiny, but they have mass, and so they are affected by gravity. As the density of a gas increases, gas particles collide more frequently and with greater force, causing the gas’s temperature to inc ...
... Remember that gases, like all forms of matter, are composed of particles in motion. These particles are tiny, but they have mass, and so they are affected by gravity. As the density of a gas increases, gas particles collide more frequently and with greater force, causing the gas’s temperature to inc ...
Galaxies
... that careened through the core of the host galaxy. Like a rock tossed into a lake, the collision sent a ripple of energy into space, blowing gas and dust in front of it. ...
... that careened through the core of the host galaxy. Like a rock tossed into a lake, the collision sent a ripple of energy into space, blowing gas and dust in front of it. ...
Molecular Gas in Nearby Dwarf Galaxies:
... “…Extreme properties are often sought for in Astronomy as one way to sharpen our understanding of fundamental concepts…” ...
... “…Extreme properties are often sought for in Astronomy as one way to sharpen our understanding of fundamental concepts…” ...
Properties of Stars - Mr. Carter`s Earth
... • The brightest moment is seen within a few days, remains bright for a few weeks, then returns to normal brightness within a year. _______________________ (interstellar matter): clouds of dust and gases. – If this matter gets too close to a hot star, it will ____________________. – This is known as ...
... • The brightest moment is seen within a few days, remains bright for a few weeks, then returns to normal brightness within a year. _______________________ (interstellar matter): clouds of dust and gases. – If this matter gets too close to a hot star, it will ____________________. – This is known as ...
7a Properties of Stars.pptx
... – Based on distance away – abs. mag. Sun = 5 – less than 5 brighter than Sun – Greater than 5 dimmer than Sun ...
... – Based on distance away – abs. mag. Sun = 5 – less than 5 brighter than Sun – Greater than 5 dimmer than Sun ...
Photometry Review from Some Constellations of Autumn in the
... S. Davood Sadatian. Photometry Review from Some Constellations of Autumn in the Northern Hemisphere. World Journal of Applied ...
... S. Davood Sadatian. Photometry Review from Some Constellations of Autumn in the Northern Hemisphere. World Journal of Applied ...
Galaxies and the Universe - Grandview Independent School
... smaller than the other types of galaxies; contain fewer stars ...
... smaller than the other types of galaxies; contain fewer stars ...
Get ready for quiz # 7
... 14.6 The Mass of the Milky Way Galaxy The orbital speed of an object depends only on the amount of mass between it and the galactic center. ...
... 14.6 The Mass of the Milky Way Galaxy The orbital speed of an object depends only on the amount of mass between it and the galactic center. ...
Charting The Universe - University of Windsor
... • Ancient Calendars: for religious festivals and agriculture. (Geocentric model) • There are 88 constellations. (Most are seen in Windsor at some part of the year.) • Still useful for depicting regions of the sky. • Note: the stars are not close to each other…they just appear to be! ...
... • Ancient Calendars: for religious festivals and agriculture. (Geocentric model) • There are 88 constellations. (Most are seen in Windsor at some part of the year.) • Still useful for depicting regions of the sky. • Note: the stars are not close to each other…they just appear to be! ...
The origin, life, and death of stars
... and this speeds up the rate of fusion O and B stars can consume all of their core hydrogen in a few million years, while very low mass stars can take hundreds of billions of years. ...
... and this speeds up the rate of fusion O and B stars can consume all of their core hydrogen in a few million years, while very low mass stars can take hundreds of billions of years. ...
Additional Images
... known for their random standstills. Z Cam outbursts are classified into three main categories - common, plateau, and anomalous - based on the shape and duration of the outburst. Plateau outbursts are brighter and last longer than common outbursts. Some outbursts end in standstills in which the brigh ...
... known for their random standstills. Z Cam outbursts are classified into three main categories - common, plateau, and anomalous - based on the shape and duration of the outburst. Plateau outbursts are brighter and last longer than common outbursts. Some outbursts end in standstills in which the brigh ...
Chapter 27 Stars and Galaxies
... Apparent Magnitude The measurement of brightness is assigned a number on a scale – Brightest stars have lowest numbers – Dimmest stars have highest numbers ...
... Apparent Magnitude The measurement of brightness is assigned a number on a scale – Brightest stars have lowest numbers – Dimmest stars have highest numbers ...
ref star birth - russballard.com
... molecular cloud, the solar wind buffets all surrounding objects - it clears a space all around the new star. The molecular cloud that is the Rosette Nebula, 4500 ly from Earth, was the birthplace of the young, hot, blue stars in the centre. Now, they are busy modifying their home. ...
... molecular cloud, the solar wind buffets all surrounding objects - it clears a space all around the new star. The molecular cloud that is the Rosette Nebula, 4500 ly from Earth, was the birthplace of the young, hot, blue stars in the centre. Now, they are busy modifying their home. ...
Lecture 42
... stars, of which the star T-Tauri (now known to be a binary pair) is the type example. During this phase, a visible star begins to emerge from its cocoon of gas and dust, but it remains surrounded by its circumstellar disk. The luminosity is due entirely to continued accretion and gravitational colla ...
... stars, of which the star T-Tauri (now known to be a binary pair) is the type example. During this phase, a visible star begins to emerge from its cocoon of gas and dust, but it remains surrounded by its circumstellar disk. The luminosity is due entirely to continued accretion and gravitational colla ...
Age patterns in a sample of spiral galaxies
... The study of the SFH and SFR provides vital information regarding the evolutionary properties of galaxies and the physical processes which drive their evolution. SF can vary across the different types of galaxies depending on factors such as gas content, mass, or environment [15], even for the same ...
... The study of the SFH and SFR provides vital information regarding the evolutionary properties of galaxies and the physical processes which drive their evolution. SF can vary across the different types of galaxies depending on factors such as gas content, mass, or environment [15], even for the same ...
Lecture 26 Pre-Main Sequence Evolution
... • 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 allow any type later than F5, and requiring strong Li 6707 A absorption (as an age indicator) ...
... • 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 allow any type later than F5, and requiring strong Li 6707 A absorption (as an age indicator) ...
Ast 405, Pulsating Stars The following is based Chapter 14 of the
... • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysics. • 4. The brighter the star, the longer its period of oscillation. • 5. Fi ...
... • 2. Examples are Miras, Cepheids, RR Lyraes, W Virginis, BL Her stars. You shouyld be familiar with Table 14.1 in the book. • 3. The Cepheid Period-Luminosity relation, or PL relation is of crucial importance in Astrophysics. • 4. The brighter the star, the longer its period of oscillation. • 5. Fi ...
Slide 1 - Beverley High School
... sequence depends entirely on its mass. Low mass stars are found at the left and high mass stars at the right. • The mass of a star controls its radius, its temperature, its life expectancy and its eventual fate. ...
... sequence depends entirely on its mass. Low mass stars are found at the left and high mass stars at the right. • The mass of a star controls its radius, its temperature, its life expectancy and its eventual fate. ...
Sample Answer Sheet for The 10 Tourist Wonders of the
... As much as 90% of the star’s material can be thrown off during the explosion and, in the process, new (heavier) elements are made, and then distributed at high speed into the Galaxy. In many ways, life on Earth owes its existence to supernovae and the fact that they “recycle” the material of early g ...
... As much as 90% of the star’s material can be thrown off during the explosion and, in the process, new (heavier) elements are made, and then distributed at high speed into the Galaxy. In many ways, life on Earth owes its existence to supernovae and the fact that they “recycle” the material of early g ...
The “Life” of Non-living Stars - Etiwanda E
... Our sun is Earth’s closest star Our sun’s color is yellow Our sun’s temperature is 6000 C Hydrogen, Helium, Calcium and other heavier elements make up our sun • Our sun is a class G star • Our sun is about +4.8 in absolute ...
... Our sun is Earth’s closest star Our sun’s color is yellow Our sun’s temperature is 6000 C Hydrogen, Helium, Calcium and other heavier elements make up our sun • Our sun is a class G star • Our sun is about +4.8 in absolute ...
(AU): Average distance from Earth to Sun
... turn to gas when heated by the sun • Heating by sun forms a tail, which is blown away from sun by solar ...
... turn to gas when heated by the sun • Heating by sun forms a tail, which is blown away from sun by solar ...
The Milky Way
... the fastest speed there is. So remember, when you're feeling very small and insecure, How amazingly unlikely is your birth, And pray that there's intelligent life somewhere up in space, 'Cause there's bugger all down here on Earth. ...
... the fastest speed there is. So remember, when you're feeling very small and insecure, How amazingly unlikely is your birth, And pray that there's intelligent life somewhere up in space, 'Cause there's bugger all down here on Earth. ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.