night watch - Warren Astronomical Society
... -2The best method for determining the radius of Pluto, as it is for Neptune, is to observe a stellar occultation. It was predicted that Pluto would pass near a 15th magnitude star in 1965, and so the passage was observed very closely by several observatories to see if the star would be occulted. We ...
... -2The best method for determining the radius of Pluto, as it is for Neptune, is to observe a stellar occultation. It was predicted that Pluto would pass near a 15th magnitude star in 1965, and so the passage was observed very closely by several observatories to see if the star would be occulted. We ...
Planet migration
... (1) planets orbits are circular, coplanar, and in same direction Planets form in massive (>>1Mjupiter) circumstellar disks NB the idea that planets form in circumstellar disks (the solar nebula) goes back to Swedenborg (1734), Kant (1755) and Laplace (1796) (2) formation took less than a few Myr Pla ...
... (1) planets orbits are circular, coplanar, and in same direction Planets form in massive (>>1Mjupiter) circumstellar disks NB the idea that planets form in circumstellar disks (the solar nebula) goes back to Swedenborg (1734), Kant (1755) and Laplace (1796) (2) formation took less than a few Myr Pla ...
Lecture 30
... Evolution of the core is controlled by the need for increasingly higher temperatures for nuclear burning of heavier elements: • Initially, burn hydrogen in the core • Once hydrogen is exhausted, too cool to burn helium • Core contracts, heats up • Helium burning stars • If star is massive enough, s ...
... Evolution of the core is controlled by the need for increasingly higher temperatures for nuclear burning of heavier elements: • Initially, burn hydrogen in the core • Once hydrogen is exhausted, too cool to burn helium • Core contracts, heats up • Helium burning stars • If star is massive enough, s ...
Earth Science Final Exam Study Guide 2014
... 3. Why is Pluto now considered a dwarf planet? It crosses paths with Neptune. 4. Why is Venus considered Earth’s twin? (pg 590-591) It is about the same size. 5. Give one unique characteristic of each planet (pg 588-598) Mercury- Cratered like our moon Venus-hottest planet because of the extreme gre ...
... 3. Why is Pluto now considered a dwarf planet? It crosses paths with Neptune. 4. Why is Venus considered Earth’s twin? (pg 590-591) It is about the same size. 5. Give one unique characteristic of each planet (pg 588-598) Mercury- Cratered like our moon Venus-hottest planet because of the extreme gre ...
Mark Rubin
... infrared surveys to search for intense Lyman α sources. • When strong Lyman α emitters are found, both the Lyman α and the He II lines can be observed with R > 3000 spectroscopy using a GSMT. Observations can focus on the region in which He II is expected (e.g., at 1.44 microns or Hband, for the z ~ ...
... infrared surveys to search for intense Lyman α sources. • When strong Lyman α emitters are found, both the Lyman α and the He II lines can be observed with R > 3000 spectroscopy using a GSMT. Observations can focus on the region in which He II is expected (e.g., at 1.44 microns or Hband, for the z ~ ...
Part 2 - MGNet
... the supermassive black hole at the center of our galaxy. The black hole, which contains a few million times the mass of the Sun, is invisible in this infrared image, though its gravitational effect is apparent! ...
... the supermassive black hole at the center of our galaxy. The black hole, which contains a few million times the mass of the Sun, is invisible in this infrared image, though its gravitational effect is apparent! ...
Small Wonders: Canes Venatici
... that late spring / early summer puts this galaxy in it's best position for observing. The distance to M51 is somewhere around 15 million light years, and it's magnitude is usually given as somewhere around 8.1 with a surface brightness of around 13th magnitude. M51's spiral structure was probably f ...
... that late spring / early summer puts this galaxy in it's best position for observing. The distance to M51 is somewhere around 15 million light years, and it's magnitude is usually given as somewhere around 8.1 with a surface brightness of around 13th magnitude. M51's spiral structure was probably f ...
High Contrast - University of Arizona
... UV/Optical imaging and spectroscopy of collisionally evolved circumstellar debris and co-orbital bodies will play a pivotal role in furthering our understanding of the formation and evolution of exosolar planetary systems. To study physical processes acting over sub-AU spatial scales and time scale ...
... UV/Optical imaging and spectroscopy of collisionally evolved circumstellar debris and co-orbital bodies will play a pivotal role in furthering our understanding of the formation and evolution of exosolar planetary systems. To study physical processes acting over sub-AU spatial scales and time scale ...
View PDF - Sara Seager
... of years ago, as possibly implied by the elevated deuterium/hydrogen (D/H) ratio in the venusian atmosphere (15). Because of warm surface temperatures, water evaporated to saturate the upper atmosphere where solar extreme ultraviolet (EUV) radiation photodissociated the H2O, enabling H to escape to ...
... of years ago, as possibly implied by the elevated deuterium/hydrogen (D/H) ratio in the venusian atmosphere (15). Because of warm surface temperatures, water evaporated to saturate the upper atmosphere where solar extreme ultraviolet (EUV) radiation photodissociated the H2O, enabling H to escape to ...
Study Guide for Earth Science Final
... 32. What are the two sources of energy that all natural processes derive their energy from? 33. What is the difference between renewable and non-renewable resources? Examples? 34. How did industrialization affect our environment? 35. What are some advantages and disadvantages of the following types ...
... 32. What are the two sources of energy that all natural processes derive their energy from? 33. What is the difference between renewable and non-renewable resources? Examples? 34. How did industrialization affect our environment? 35. What are some advantages and disadvantages of the following types ...
Lecture Eight (Powerpoint format) - Flash
... three years on the Hubble Space Telescope. The image covers roughly 1000 AU. The outflow appears to be highly sporadic, but it remains unclear how it is being powered or even which binary member is powering it. ...
... three years on the Hubble Space Telescope. The image covers roughly 1000 AU. The outflow appears to be highly sporadic, but it remains unclear how it is being powered or even which binary member is powering it. ...
21structure1i
... More than 2000 galaxies and covers 100 square degrees in the sky 15 Mpc or 50 million light years away Centered on giant ellipticals larger than the entire local group Local group is a poor cluster, Virgo is a rich one ...
... More than 2000 galaxies and covers 100 square degrees in the sky 15 Mpc or 50 million light years away Centered on giant ellipticals larger than the entire local group Local group is a poor cluster, Virgo is a rich one ...
Folie 1
... Evolution to Red Giant • Once the star uses up all the H in its convective core, nuclear fusion ceases, convection is quenched. The star is no longer in hydrostatic equilibrium. – Gravity wins out over pressure, and the core begins to collapse and heats up. – As the core shrinks, the energy of the ...
... Evolution to Red Giant • Once the star uses up all the H in its convective core, nuclear fusion ceases, convection is quenched. The star is no longer in hydrostatic equilibrium. – Gravity wins out over pressure, and the core begins to collapse and heats up. – As the core shrinks, the energy of the ...
The Northern Winter Constellations - Science
... Orion to the left and slightly down, you will come across a very bright star called Sirius, which is also known as the Dog Star. (See the arrows in the diagram to the right). Sirius is the brightest star in the night sky so it is hard to miss. Once you’ve located Sirius you can locate the other star ...
... Orion to the left and slightly down, you will come across a very bright star called Sirius, which is also known as the Dog Star. (See the arrows in the diagram to the right). Sirius is the brightest star in the night sky so it is hard to miss. Once you’ve located Sirius you can locate the other star ...
Star formation PowerPoint
... Some fragments are too small for fusion ever to begin. They gradually cool off and become dark “clinkers.” A protostar must have 0.08 the mass of the Sun (which is 80 times the mass of Jupiter) in order to become dense and hot enough that fusion can begin. ...
... Some fragments are too small for fusion ever to begin. They gradually cool off and become dark “clinkers.” A protostar must have 0.08 the mass of the Sun (which is 80 times the mass of Jupiter) in order to become dense and hot enough that fusion can begin. ...
overview - FOSSweb
... The Sun, Moon, and Stars Module consists of three sequential investigations, each designed to introduce students to objects we see in the sky. Through outdoor observations made during the day and at night, active simulations, readings, videos, and discussions, students study the Sun, Moon, and stars ...
... The Sun, Moon, and Stars Module consists of three sequential investigations, each designed to introduce students to objects we see in the sky. Through outdoor observations made during the day and at night, active simulations, readings, videos, and discussions, students study the Sun, Moon, and stars ...
11/17/2011 1 Ch. 27 Notes: Nebular Hypothesis The Nebular
... • A rotating cloud of gas and dust condensed to form the sun and surrounding planets. ...
... • A rotating cloud of gas and dust condensed to form the sun and surrounding planets. ...
stars & galaxies
... Our galaxy is a spiral galaxy, in which the sun is one in a billion stars that are found inside. All the stars in the Milky Way have their own motion, some are moving towards the sun while others are moving away from our sun. Our sun is located on one of the spiral arms. It is rotating around the nu ...
... Our galaxy is a spiral galaxy, in which the sun is one in a billion stars that are found inside. All the stars in the Milky Way have their own motion, some are moving towards the sun while others are moving away from our sun. Our sun is located on one of the spiral arms. It is rotating around the nu ...
AST1001.ch1
... • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
... • and rotates in the same direction it orbits, counterclockwise as viewed from above the North Pole. ...
document
... Andromeda’s disk is now believed to span as much as 228,000 light years in width. Andromeda’s disk is also about twice as large as the Milky Way’s. The brightest star cloud in Andromeda is NGC 206. There are two “dust rings” in Andromeda’s disk caused by a head on collision with a neighboring dwarf ...
... Andromeda’s disk is now believed to span as much as 228,000 light years in width. Andromeda’s disk is also about twice as large as the Milky Way’s. The brightest star cloud in Andromeda is NGC 206. There are two “dust rings” in Andromeda’s disk caused by a head on collision with a neighboring dwarf ...
doc
... 1. The patterns of stars in the sky stay the same, although they appear to move across the sky nightly, and different stars can be seen in different seasons. 2. Constellations are groups of stars that look like pictures. 3. Stars are like the sun, some being smaller and some larger, but so far away ...
... 1. The patterns of stars in the sky stay the same, although they appear to move across the sky nightly, and different stars can be seen in different seasons. 2. Constellations are groups of stars that look like pictures. 3. Stars are like the sun, some being smaller and some larger, but so far away ...
Aries The Ram - Maverick`s E-portfolio
... equinox with marked together with Gamma Arietis or Hamal, which would mark the beginning of spring[5]. Mesarthim, Gamma Arietis once was the most visible star in the vernal equinox. It is a triple star system, it’s referred to as the First Star in Aries. It has an apparent magnitude of 4.75 and 4.83 ...
... equinox with marked together with Gamma Arietis or Hamal, which would mark the beginning of spring[5]. Mesarthim, Gamma Arietis once was the most visible star in the vernal equinox. It is a triple star system, it’s referred to as the First Star in Aries. It has an apparent magnitude of 4.75 and 4.83 ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.