Extrasolar Planetary Systems » American Scientist
... The following year, David W. Latham of the Harvard-Smithsonian Center for Astrophysics and four colleagues reported strong evidence for what might be a planet orbiting an obscure star known as HD 114762. Because Latham's planet has at least 10 times the mass of Jupiter, astronomers tended to assume ...
... The following year, David W. Latham of the Harvard-Smithsonian Center for Astrophysics and four colleagues reported strong evidence for what might be a planet orbiting an obscure star known as HD 114762. Because Latham's planet has at least 10 times the mass of Jupiter, astronomers tended to assume ...
What Makes a Planet Habitable?
... The youngest stages of planets Planets form and grow in so-called protoplanetary disks, which are huge gas and dust disks orbiting the youngest stars at ages of only one to a few million years, with sizes larger than the entire solar system. Dust particles coagulate in disks to ever larger grains an ...
... The youngest stages of planets Planets form and grow in so-called protoplanetary disks, which are huge gas and dust disks orbiting the youngest stars at ages of only one to a few million years, with sizes larger than the entire solar system. Dust particles coagulate in disks to ever larger grains an ...
Between the Stars: Gas and Dust in Space
... To understand how stars form, we need to know the raw material from which they are made All the gas and dust material that lies in the region between stars is referred to as interstellar matter The entire collection of interstellar matter is called the interstellar medium The interstellar medium acc ...
... To understand how stars form, we need to know the raw material from which they are made All the gas and dust material that lies in the region between stars is referred to as interstellar matter The entire collection of interstellar matter is called the interstellar medium The interstellar medium acc ...
In the icy near-vacuum of interstellar space are seething
... there are huge, cloudlike collections of dust and gas swirling through the interstellar regions of a galaxy; they discovered these clouds as a result of the reddening effect that dust (as well as radial velocity—see "One Universe, Indivisible" in this Mosaic) has on starlight: the more dust there is ...
... there are huge, cloudlike collections of dust and gas swirling through the interstellar regions of a galaxy; they discovered these clouds as a result of the reddening effect that dust (as well as radial velocity—see "One Universe, Indivisible" in this Mosaic) has on starlight: the more dust there is ...
SPECIAL REPORT
... The most massive planetesimals, with their stronger gravities, gobble up smaller bodies. In as little as 100,000 years, a nascent solar system might contain a swarm of hundreds of lunar-mass planetary embryos moving on nearly circular orbits. After this comes a longer-lasting phase in which embryos ...
... The most massive planetesimals, with their stronger gravities, gobble up smaller bodies. In as little as 100,000 years, a nascent solar system might contain a swarm of hundreds of lunar-mass planetary embryos moving on nearly circular orbits. After this comes a longer-lasting phase in which embryos ...
Chapter 4 Practice Questions
... Question 3 a) mass times surface gravity b) mass divided by volume c) size divided by weight d) mass times surface area e) weight divided by size ...
... Question 3 a) mass times surface gravity b) mass divided by volume c) size divided by weight d) mass times surface area e) weight divided by size ...
ph709-08-3b - Centre for Astrophysics and Planetary Science
... rings orbiting the planet would, if large enough, be apparent from distortions of the light curve or from irregularities in the transit timings. We find no evidence for either satellites or rings, with upper limits on satellite radius and mass of 1.2 R and 3 M , respectively. Opaque rings, if presen ...
... rings orbiting the planet would, if large enough, be apparent from distortions of the light curve or from irregularities in the transit timings. We find no evidence for either satellites or rings, with upper limits on satellite radius and mass of 1.2 R and 3 M , respectively. Opaque rings, if presen ...
Surveys of Stars, The interstellar medium
... where UV radiation is completely absorbed. “Molecular ...
... where UV radiation is completely absorbed. “Molecular ...
ph709-15
... and 1.9 times that of Earth. Theoretical modelling of two of these superEarths, Kepler-62e and Kepler-62f, suggests both could be solid, either rocky or rocky with frozen water. On June 25, 2013 Three “super Earth” planets have been found orbiting a nearby star at a distance where life in theory cou ...
... and 1.9 times that of Earth. Theoretical modelling of two of these superEarths, Kepler-62e and Kepler-62f, suggests both could be solid, either rocky or rocky with frozen water. On June 25, 2013 Three “super Earth” planets have been found orbiting a nearby star at a distance where life in theory cou ...
Document
... • If protostar less than 0.08 Msun, it can never develop the temperature and pressure to start the hydrogen ...
... • If protostar less than 0.08 Msun, it can never develop the temperature and pressure to start the hydrogen ...
Problem Set No. 5
... 3. We saw there is a mass-radius relation for white dwarfs (see slide 12 from lecture 16). What is the mass of a white dwarf with the same radius as the Earth? The force of gravity is given by g = GM/R2 for a body of mass M and radius R. By what factor is the gravity on the surface of a white dwarf ...
... 3. We saw there is a mass-radius relation for white dwarfs (see slide 12 from lecture 16). What is the mass of a white dwarf with the same radius as the Earth? The force of gravity is given by g = GM/R2 for a body of mass M and radius R. By what factor is the gravity on the surface of a white dwarf ...
PLANETS
... It has a very large field of view for an astronomical telescope —105 square degrees— or about the area of both your hands held at arm's length, in order to observe the necessary large number of stars. It stares at the same star field for the entire mission and continuously and simultaneously monitor ...
... It has a very large field of view for an astronomical telescope —105 square degrees— or about the area of both your hands held at arm's length, in order to observe the necessary large number of stars. It stares at the same star field for the entire mission and continuously and simultaneously monitor ...
Goal: To understand what comets are and to explore the Oort cloud.
... • At this point they either collide with the planet (like the Shoemaker-Levy 9 comet), or a moon of the planet, or they are tossed into the inner solar system. ...
... • At this point they either collide with the planet (like the Shoemaker-Levy 9 comet), or a moon of the planet, or they are tossed into the inner solar system. ...
Gravity`s Influence on the Development of the Solar System
... help us understand our universe. There are two slightly opposing theories for the solar system’s development: A terrestrial planet formed in the inner region and the Jovian-size planet in the outer, versus the Jovian-size planet formed in the inner region. The discussion here will focus on a two-pla ...
... help us understand our universe. There are two slightly opposing theories for the solar system’s development: A terrestrial planet formed in the inner region and the Jovian-size planet in the outer, versus the Jovian-size planet formed in the inner region. The discussion here will focus on a two-pla ...
Star Birth
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
The Formation of Planetary Systems
... the Kuiper belt and the Oort cloud Some were left with extremely eccentric orbits and appear in the inner solar system as comets ...
... the Kuiper belt and the Oort cloud Some were left with extremely eccentric orbits and appear in the inner solar system as comets ...
α Cen A + iodine cell spectrum - Department of Physics and Astronomy
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
... by Guedes et al. for α CenB. All simulations yield 1 to 4 Earth-mass planets of which 42% lie inside the star’s habitable zone (dashed lines). The planetary configuration of the solar system is shown for reference. Starting conditions: N lunar-mass bodies in a disk with 1/a surface density. ...
ppt
... actually much closer to 290 K Atmospheric greenhouse effect serves to keep the temperature higher (also a very tiny heating effect due to geothermal heat) ...
... actually much closer to 290 K Atmospheric greenhouse effect serves to keep the temperature higher (also a very tiny heating effect due to geothermal heat) ...
Phys 214. Planets and Life
... Many brown dwarfs in constellation Orion. Infrared image of a Jupiter-size planet orbiting a brown dwarf. Brown dwarfs are substellar objects with insufficient mass to sustain nuclear fusion in their cores. They have higher surface temperatures than planets and masses between 10to 80 times that of J ...
... Many brown dwarfs in constellation Orion. Infrared image of a Jupiter-size planet orbiting a brown dwarf. Brown dwarfs are substellar objects with insufficient mass to sustain nuclear fusion in their cores. They have higher surface temperatures than planets and masses between 10to 80 times that of J ...
Eyeing the retina nebula
... Planetary nebulae are the multicolored remnants of dead stars. When a star about the size of the Sun runs out of nuclear fuel, the core collapses to form a much smaller dwarf star and the outer layers are ejected to form an expanding cloud of dust and gas. Intense radiation from the collapsed star i ...
... Planetary nebulae are the multicolored remnants of dead stars. When a star about the size of the Sun runs out of nuclear fuel, the core collapses to form a much smaller dwarf star and the outer layers are ejected to form an expanding cloud of dust and gas. Intense radiation from the collapsed star i ...
pdf - Starchitect
... Creating Planets and Moons Opportunities to build planets come in specific windows during the life of the star. Giant worlds come first: these can’t support life, but they can help shield planets from asteroids and comets that could lead to extinction events. Moons come next, since they are often fo ...
... Creating Planets and Moons Opportunities to build planets come in specific windows during the life of the star. Giant worlds come first: these can’t support life, but they can help shield planets from asteroids and comets that could lead to extinction events. Moons come next, since they are often fo ...
Star Formation
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
... Thought Question What would happen to a contracting cloud fragment if it were not able to radiate away its thermal energy? A. It would continue contracting, but its temperature would not change B. Its mass would increase C. Its internal pressure would increase ...
PHYSICS 110: PHYSICS OF EVERYDAY PHENOMENA
... --- describe the formation of asteroids, meteors, comets, and planets (relate that to the evolution of the Earth and its life forms) --- explore satellites, human space travel and life on other planets (understand the requirements for life as we know it and the limitations and possibilities of human ...
... --- describe the formation of asteroids, meteors, comets, and planets (relate that to the evolution of the Earth and its life forms) --- explore satellites, human space travel and life on other planets (understand the requirements for life as we know it and the limitations and possibilities of human ...
pdf version
... start to combine circumstellar disk evolution with young solar system physics (the so-called meteoritic record). However, we have been forced to introduce an intermezzo, because our understanding of how dust grains, observable in circumstellar disks only up to a few mm in size, grow into solar-syste ...
... start to combine circumstellar disk evolution with young solar system physics (the so-called meteoritic record). However, we have been forced to introduce an intermezzo, because our understanding of how dust grains, observable in circumstellar disks only up to a few mm in size, grow into solar-syste ...
Planets around Other Stars - Sierra College Astronomy Home Page
... looking transiting planets, down to the size of Mercury! COROT (Lauched 2006) is not as sensitive as Kelpler, but should be able to detect planets down to a few Earth ...
... looking transiting planets, down to the size of Mercury! COROT (Lauched 2006) is not as sensitive as Kelpler, but should be able to detect planets down to a few Earth ...