Notes: Star Formation
... 1. The mass of the objects - The larger the mass, the larger the pull of gravity 2. The distance between the objects - The closer the objects the greater the pull of gravity ...
... 1. The mass of the objects - The larger the mass, the larger the pull of gravity 2. The distance between the objects - The closer the objects the greater the pull of gravity ...
ppt
... Consists of stars living out the “normal” part of their lives… Stars on MS produce energy via steady hydrogen burning (i.e., converting hydrogen into helium). Stars of different mass lie at different points on the main sequence. Mass-luminosity relation: L M4. ...
... Consists of stars living out the “normal” part of their lives… Stars on MS produce energy via steady hydrogen burning (i.e., converting hydrogen into helium). Stars of different mass lie at different points on the main sequence. Mass-luminosity relation: L M4. ...
The ISM and Stellar Birth
... • Near the Sun, Extinction amounts to 2 magnitudes per 1000 parsecs. That is, a star 1000pc from Earth will look about 2 magnitudes fainter than if space were empty completely • Dust thought to come from stellar ‘winds’, blowing out molecules of hydrogen, carbon, oxygen and other elements which coo ...
... • Near the Sun, Extinction amounts to 2 magnitudes per 1000 parsecs. That is, a star 1000pc from Earth will look about 2 magnitudes fainter than if space were empty completely • Dust thought to come from stellar ‘winds’, blowing out molecules of hydrogen, carbon, oxygen and other elements which coo ...
The Death of Stars - Mounds Park Academy Blogs
... Planetary Nebulae • The core becomes so hot that helium fuses to make ...
... Planetary Nebulae • The core becomes so hot that helium fuses to make ...
the free PDF resource
... usually yellow, white or blue depending on temperature (hotter = more blue) mass varies hugely usually orbited by planets sometimes exists in a pair (called binary system) almost entirely hydrogen. ...
... usually yellow, white or blue depending on temperature (hotter = more blue) mass varies hugely usually orbited by planets sometimes exists in a pair (called binary system) almost entirely hydrogen. ...
Animated Planets PowerPoint Presentation
... LT: Understand comet make-up, properties, Vocab.: 1. comet nucleus 2. Halley’s comet 3. “dirty snowball” Agenda: Comet Notes ...
... LT: Understand comet make-up, properties, Vocab.: 1. comet nucleus 2. Halley’s comet 3. “dirty snowball” Agenda: Comet Notes ...
Bubble Nebulae Around Ultra-luminous X
... Only a handful of radio detections of ULXs have been made so far. These sources all show large nebulae (>50 pc) that are likely powered by continuous energy input from the ULX, in the same manner as the W50 nebula is powered by the Galactic binary SS433. However, the ULX radio nebulae require three ...
... Only a handful of radio detections of ULXs have been made so far. These sources all show large nebulae (>50 pc) that are likely powered by continuous energy input from the ULX, in the same manner as the W50 nebula is powered by the Galactic binary SS433. However, the ULX radio nebulae require three ...
Death of sun
... Low mass red dwarf stars cannot achieve any advanced fusion because they cannot get hot enough (Temp < 100 million K) to begin the next reaction (helium to carbon) Hydrogen => Helium fusion ends at core Star shrinks to form a white dwarf ...
... Low mass red dwarf stars cannot achieve any advanced fusion because they cannot get hot enough (Temp < 100 million K) to begin the next reaction (helium to carbon) Hydrogen => Helium fusion ends at core Star shrinks to form a white dwarf ...
Stages in the Formation of Stars
... 6. What process gives a star the mass of the Sun a “second life: after its hydrogen fusion stage is over? ...
... 6. What process gives a star the mass of the Sun a “second life: after its hydrogen fusion stage is over? ...
Stellar Evolution
... • “The hourglass shapes of many planetary nebulae are produced by the expansion of a ‘fast stellar wind’ within a slowly expanding ’cloud’ which is denser near its equator than its poles.” • If so, where do the x-rays come from? ...
... • “The hourglass shapes of many planetary nebulae are produced by the expansion of a ‘fast stellar wind’ within a slowly expanding ’cloud’ which is denser near its equator than its poles.” • If so, where do the x-rays come from? ...
document
... cloud of interstellar gas and dust. Through small telescopes, these objects looked like the planets Uranus and Neptune, and so early astronomers called them “planetary” nebulae. Astronomers now know that they have nothing to do with planets, but the name has stuck. Our own Sun will eventually, billi ...
... cloud of interstellar gas and dust. Through small telescopes, these objects looked like the planets Uranus and Neptune, and so early astronomers called them “planetary” nebulae. Astronomers now know that they have nothing to do with planets, but the name has stuck. Our own Sun will eventually, billi ...
The Interstellar Medium
... Outline of a general systematic arrangement among the fixed stars, derived from the phenomenon of the Milky Way. Similarity of this system of fixed stars to the planetary system. Discovery of many such systems, showing up in the expanse of the heavens in the form of elliptical shapes. New idea about ...
... Outline of a general systematic arrangement among the fixed stars, derived from the phenomenon of the Milky Way. Similarity of this system of fixed stars to the planetary system. Discovery of many such systems, showing up in the expanse of the heavens in the form of elliptical shapes. New idea about ...
Cat`s Eye Nebula (NGC 6543)
... ejected during the final stages of evolution of a star similar in mass to our Sun. Planetary nebulae are like snowflakes: no two look alike. When a Sun-like star nears the end of its life, it expands in size to become a bloated red giant, with a diameter about 100 times greater than its original siz ...
... ejected during the final stages of evolution of a star similar in mass to our Sun. Planetary nebulae are like snowflakes: no two look alike. When a Sun-like star nears the end of its life, it expands in size to become a bloated red giant, with a diameter about 100 times greater than its original siz ...
Stars and Black Holes: Stars A star is a massive, luminous ball of
... ______________, and heats more. This results in a ______________. Stars are classified by their size: Low mass stars Medium mass stars (e.g. ____________) High mass stars Each has a different ______________. ...
... ______________, and heats more. This results in a ______________. Stars are classified by their size: Low mass stars Medium mass stars (e.g. ____________) High mass stars Each has a different ______________. ...
Space - lucu
... sites of star formation. In fact, all stars, planets, and solar systems are formed from nebulae. • A nebula may lie undisturbed for many millions or billions of years as it waits for just the right conditions to form stars. ...
... sites of star formation. In fact, all stars, planets, and solar systems are formed from nebulae. • A nebula may lie undisturbed for many millions or billions of years as it waits for just the right conditions to form stars. ...
ii. star clusters
... A. Within cluster, only the stars’ ______ differs (same composition, age, etc..) B. _________ CLUSTERS 1. ___________ or thousands of stars 2. Loosely bound, __________ shape 3. _______ (Hundreds of millions of yrs.) Ex/ Pleaides (7 Sisters); Hyades C. ________________ CLUSTERS ...
... A. Within cluster, only the stars’ ______ differs (same composition, age, etc..) B. _________ CLUSTERS 1. ___________ or thousands of stars 2. Loosely bound, __________ shape 3. _______ (Hundreds of millions of yrs.) Ex/ Pleaides (7 Sisters); Hyades C. ________________ CLUSTERS ...
galaxies - GEOCITIES.ws
... suggests, they have elliptical or spheroidal like shapes. The majority of their stars are old (K and M giants), and they have much less dust and gas than the spirals. ...
... suggests, they have elliptical or spheroidal like shapes. The majority of their stars are old (K and M giants), and they have much less dust and gas than the spirals. ...
Emission and reflection nebula are two types of star forming
... Reflected visible light in reflection nebula is light reflected off of dust and gas and nearby stars appear much brighter than the dust nebula.[The source of light for reflection nebulae is “ordinary” stars, stars that are not such extreme high temperature, that they don’t have much UV radiation. Th ...
... Reflected visible light in reflection nebula is light reflected off of dust and gas and nearby stars appear much brighter than the dust nebula.[The source of light for reflection nebulae is “ordinary” stars, stars that are not such extreme high temperature, that they don’t have much UV radiation. Th ...
More stellar evolution…bloated stars and compact cores
... Eventually, temperatures in compact core reach high enough temperatures for helium fusion reactions, the “triple alpha process” ...
... Eventually, temperatures in compact core reach high enough temperatures for helium fusion reactions, the “triple alpha process” ...
Stellar Death Final Phases
... using a spectroscope proved that Herschel was right emission lines in the spectrum showed that the nebula was a gas. ...
... using a spectroscope proved that Herschel was right emission lines in the spectrum showed that the nebula was a gas. ...
Planetary nebula
A planetary nebula, often abbreviated as PN or plural PNe, is a kind of emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. The word ""nebula"" is Latin for mist or cloud and the term ""planetary nebula"" is a misnomer that originated in the 1780s with astronomer William Herschel because when viewed through his telescope, these objects appeared to him to resemble the rounded shapes of planets. Herschel's name for these objects was popularly adopted and has not been changed. They are a relatively short-lived phenomenon, lasting a few tens of thousands of years, compared to a typical stellar lifetime of several billion years.A mechanism for formation of most planetary nebulae is thought to be the following: at the end of the star's life, during the red giant phase, the outer layers of the star are expelled by strong stellar winds. Eventually, after most of the red giant's atmosphere is dissipated, the exposed hot, luminous core emits ultraviolet radiation to ionize the ejected outer layers of the star. Absorbed ultraviolet light energises the shell of nebulous gas around the central star, appearing as a bright coloured planetary nebula at several discrete visible wavelengths.Planetary nebulae may play a crucial role in the chemical evolution of the Milky Way, returning material to the interstellar medium from stars where elements, the products of nucleosynthesis (such as carbon, nitrogen, oxygen and neon), have been created. Planetary nebulae are also observed in more distant galaxies, yielding useful information about their chemical abundances.In recent years, Hubble Space Telescope images have revealed many planetary nebulae to have extremely complex and varied morphologies. About one-fifth are roughly spherical, but the majority are not spherically symmetric. The mechanisms which produce such a wide variety of shapes and features are not yet well understood, but binary central stars, stellar winds and magnetic fields may play a role.