Habitable zone - Penn State University
... water • Habitable zones should be defined conservatively if they are being used to generate design parameters for future spacebased telescopes – 3-D climate models are needed to further refine the boundaries of the HZ ...
... water • Habitable zones should be defined conservatively if they are being used to generate design parameters for future spacebased telescopes – 3-D climate models are needed to further refine the boundaries of the HZ ...
ppt
... Wobbles in star's position or velocity caused by planets orbit around star Observe star’s motion directly (astrometry) – long history but unsuccessful Planetary transits: planet blocks off some of star's light Gravitational microlensing Observe the planets directly (i.e. take a picture) ...
... Wobbles in star's position or velocity caused by planets orbit around star Observe star’s motion directly (astrometry) – long history but unsuccessful Planetary transits: planet blocks off some of star's light Gravitational microlensing Observe the planets directly (i.e. take a picture) ...
–1– 1. The Luminosity of Protostars We derived in the previous
... (From 5.2 in Hartmann, a very good read on this topic). In reality, a protostar is not one optically thick shell, but a series of concentric shells with decreasing density. At a given wavelength, most of radiation can be considered to come from the τ = 2/3 surface, just as in stellar photospheres (E ...
... (From 5.2 in Hartmann, a very good read on this topic). In reality, a protostar is not one optically thick shell, but a series of concentric shells with decreasing density. At a given wavelength, most of radiation can be considered to come from the τ = 2/3 surface, just as in stellar photospheres (E ...
The Origin of Our Solar System
... – Believed force was exerted by contact betwn physical entities and the universe was filled with vortices of “whirling invisible particles.” – Posited that the sun and planets formed when a large vortex contracted and condensed. ...
... – Believed force was exerted by contact betwn physical entities and the universe was filled with vortices of “whirling invisible particles.” – Posited that the sun and planets formed when a large vortex contracted and condensed. ...
Grade 9 Unit 4: Space
... Milky Way is an example created by a high mass star collapsing mostly hydrogen and dust area of extremely powerful electromagnetic radiation mix of newly forming stars and old stars contains the oldest stars in the universe remains of the formation of the solar system pieces of rock floating through ...
... Milky Way is an example created by a high mass star collapsing mostly hydrogen and dust area of extremely powerful electromagnetic radiation mix of newly forming stars and old stars contains the oldest stars in the universe remains of the formation of the solar system pieces of rock floating through ...
Meet the Jovians` Hot Siblings DONT ERASE
... search outside of our solar systems and into others, and were surprised to see they found other planets that vaguely resemble our own Jovians. Hundreds of these strange new planets have been found around stars the same size or smaller than our own we call the sun. The majority of these planets have ...
... search outside of our solar systems and into others, and were surprised to see they found other planets that vaguely resemble our own Jovians. Hundreds of these strange new planets have been found around stars the same size or smaller than our own we call the sun. The majority of these planets have ...
Star Formation - University of Redlands
... a. it is hot and things that are hot glow red. b. it is ionized hydrogen which appears red because the brightest emission line is red. c. it is cold and things that are cold appear red. d. it is full of red stars. e. dust between the observer and the region blocks the blue light, but lets the red li ...
... a. it is hot and things that are hot glow red. b. it is ionized hydrogen which appears red because the brightest emission line is red. c. it is cold and things that are cold appear red. d. it is full of red stars. e. dust between the observer and the region blocks the blue light, but lets the red li ...
Week 4
... Most extra-solar planets are discovered through the “wobble” they create in their parent star’s ...
... Most extra-solar planets are discovered through the “wobble” they create in their parent star’s ...
PHYS178 2008 week 11 part-1
... much brighter stars. Some of these have been thought to be those of orbiting exoplanets, but after further study, none of them could stand up to the real test. Some turned out to be faint stellar companions, others were entirely unrelated background stars. This one may well be different. In April of ...
... much brighter stars. Some of these have been thought to be those of orbiting exoplanets, but after further study, none of them could stand up to the real test. Some turned out to be faint stellar companions, others were entirely unrelated background stars. This one may well be different. In April of ...
Teacher notes and student sheets
... There are a lot of stars in the galaxy – about 100 billion, which we can write as 100 000 000 000 or as 1011. That is the value of S in the equation. Since the 1990s, very many ‘exoplanets’ have been found. It is estimated that much more than 10% of Sun-like stars have planets in orbit around them. ...
... There are a lot of stars in the galaxy – about 100 billion, which we can write as 100 000 000 000 or as 1011. That is the value of S in the equation. Since the 1990s, very many ‘exoplanets’ have been found. It is estimated that much more than 10% of Sun-like stars have planets in orbit around them. ...
Document
... Simulations have shown that the development from planetesimals to planets occurs in time-spans of several 10 million years (Wetherill 1990). In a time-dependent calculation by Wetherill (1986), the motion of 500 planetesimals in their orbit around the Sun was modeled (see Fig. 2.3). These initially ...
... Simulations have shown that the development from planetesimals to planets occurs in time-spans of several 10 million years (Wetherill 1990). In a time-dependent calculation by Wetherill (1986), the motion of 500 planetesimals in their orbit around the Sun was modeled (see Fig. 2.3). These initially ...
Powerpoint Presentation (large file)
... A circumstellar accretion disk provides material that a young star ejects as jets ...
... A circumstellar accretion disk provides material that a young star ejects as jets ...
The ISM
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
award
... Which of the following observations does not inform astronomers about how the Solar System must have formed. All known ages for Solar System bodies are 4.6 billion years or younger. The Solar System is flat in structure. The farther out planets take longer to complete an orbit about the Sun. The inn ...
... Which of the following observations does not inform astronomers about how the Solar System must have formed. All known ages for Solar System bodies are 4.6 billion years or younger. The Solar System is flat in structure. The farther out planets take longer to complete an orbit about the Sun. The inn ...
20.1 A Solar System is Born
... increases and the stage is set for stars to form.” Solar nebula – the cloud of gas and dust that formed our solar system. ...
... increases and the stage is set for stars to form.” Solar nebula – the cloud of gas and dust that formed our solar system. ...
CML_DPS_PressBriefing_10Oct2006
... 9P/Tempel 1 or C/Hale-Bopp 1995 O1 and comet-dominated YSO HD100546. It lacks carbonaceous and ferrous materials but includes small icy grains. - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the e ...
... 9P/Tempel 1 or C/Hale-Bopp 1995 O1 and comet-dominated YSO HD100546. It lacks carbonaceous and ferrous materials but includes small icy grains. - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the e ...
Meteroroids! Asteroids! Comets!
... It is composed of ice, gas, and dust. Coma: The coma is a blob of gas that surrounds the nucleus of a comet; The coma is composed of water vapor, carbon dioxide gas, ammonia, and dust. Gas Tail: A tail of charged gases (ions) always faces away from the sun because the solar wind. Dust Tail: The dust ...
... It is composed of ice, gas, and dust. Coma: The coma is a blob of gas that surrounds the nucleus of a comet; The coma is composed of water vapor, carbon dioxide gas, ammonia, and dust. Gas Tail: A tail of charged gases (ions) always faces away from the sun because the solar wind. Dust Tail: The dust ...
Meteroroids! Asteroids! Comets!
... It is composed of ice, gas, and dust. Coma: The coma is a blob of gas that surrounds the nucleus of a comet; The coma is composed of water vapor, carbon dioxide gas, ammonia, and dust. Gas Tail: A tail of charged gases (ions) always faces away from the sun because the solar wind. Dust Tail: The dust ...
... It is composed of ice, gas, and dust. Coma: The coma is a blob of gas that surrounds the nucleus of a comet; The coma is composed of water vapor, carbon dioxide gas, ammonia, and dust. Gas Tail: A tail of charged gases (ions) always faces away from the sun because the solar wind. Dust Tail: The dust ...
Busemann_final - University of Hertfordshire
... formed. One dust particle contained four pre-solar silicate grains with an unusual chemical composition that matches predictions for silicates formed from cooling gas following a supernova explosion. One of these grains, a fragment of olivine, was found next to a hollow, globule of carbon, most lik ...
... formed. One dust particle contained four pre-solar silicate grains with an unusual chemical composition that matches predictions for silicates formed from cooling gas following a supernova explosion. One of these grains, a fragment of olivine, was found next to a hollow, globule of carbon, most lik ...
HW #8 Answers (Due 10/21)
... lower mass stars in between the spiral arms, but not O-stars. Explain why this is. This is because O stars use their fuel very rapidly, in order to hold the star up against the inward force of gravity. Their lifetimes can be on the order of 1-10 million years. Since is takes a few hundred million ye ...
... lower mass stars in between the spiral arms, but not O-stars. Explain why this is. This is because O stars use their fuel very rapidly, in order to hold the star up against the inward force of gravity. Their lifetimes can be on the order of 1-10 million years. Since is takes a few hundred million ye ...
A105 Stars and Galaxies
... Today’s Topics How likely it is that life exists elsewhere than Earth? (Drake Equation) Searching for life elsewhere ...
... Today’s Topics How likely it is that life exists elsewhere than Earth? (Drake Equation) Searching for life elsewhere ...
Condensation of the Solar Nebula
... The research team estimates the mass of the brown dwarf at 55 to 78 times the mass of planet Jupiter. The discovery raises puzzling questions about how the brown dwarf formed, and it adds to the surprising diversity of extrasolar planetary systems being found with cutting-edge observational techniqu ...
... The research team estimates the mass of the brown dwarf at 55 to 78 times the mass of planet Jupiter. The discovery raises puzzling questions about how the brown dwarf formed, and it adds to the surprising diversity of extrasolar planetary systems being found with cutting-edge observational techniqu ...
HERE
... Formation 11. Sun contains 99.8% of Solar System mass 12. 98% of angular momentum resides in planet orbits 13. planet types/compositions depend on location (beware Moon) 14. planetary atmospheres contain ice fractions dependent on temp 15. all planets, large moons/asteroids differentiated (were warm ...
... Formation 11. Sun contains 99.8% of Solar System mass 12. 98% of angular momentum resides in planet orbits 13. planet types/compositions depend on location (beware Moon) 14. planetary atmospheres contain ice fractions dependent on temp 15. all planets, large moons/asteroids differentiated (were warm ...
Planetary Diversity - MIT Computer Science and Artificial
... ; (seefigure 2). Gas refers primarily to hydrogen and helium, the most abundant elements in the universe. stars by a gravitational instability ofthe gas disk, provided These elements also happen to comprise molecules that do it is sufficiently cold and dense. No one knows whether not condense as sol ...
... ; (seefigure 2). Gas refers primarily to hydrogen and helium, the most abundant elements in the universe. stars by a gravitational instability ofthe gas disk, provided These elements also happen to comprise molecules that do it is sufficiently cold and dense. No one knows whether not condense as sol ...