Other Solar Systems Around Other Stars
... • Kepler monitored many tens of thousands of stars in the constellation Cygnus for transits, down to 14th magnitude • Has discovered 176 confirmed and over 3,000 unconfirmed planets around other stars, most of them between 1-2 Earth’s in diameter. • (confirmed means have been seen over enough transi ...
... • Kepler monitored many tens of thousands of stars in the constellation Cygnus for transits, down to 14th magnitude • Has discovered 176 confirmed and over 3,000 unconfirmed planets around other stars, most of them between 1-2 Earth’s in diameter. • (confirmed means have been seen over enough transi ...
Chapter 2 Measuring the Earth
... What is meant by the contour “interval” on a topographic map? a. time between two lines b. space between two lines c. vertical height between two lines d. miles between two lines The contour lines on a section of map being interpreted appear much closer together than elsewhere on the same map. The c ...
... What is meant by the contour “interval” on a topographic map? a. time between two lines b. space between two lines c. vertical height between two lines d. miles between two lines The contour lines on a section of map being interpreted appear much closer together than elsewhere on the same map. The c ...
angles_telescopes
... • Can you use a small telescope (or a large one for that matter) to increase the angular size of the nearest star to the angular size of the Sun? – nearest star, alpha Cen, has physical diameter similar to Sun but a distance of 1.3 pc (4.3 light years), or about 1.5x1013 km from Earth – Sun is 1.5x1 ...
... • Can you use a small telescope (or a large one for that matter) to increase the angular size of the nearest star to the angular size of the Sun? – nearest star, alpha Cen, has physical diameter similar to Sun but a distance of 1.3 pc (4.3 light years), or about 1.5x1013 km from Earth – Sun is 1.5x1 ...
Star Formation 1 - Center for Astrostatistics
... Will this cloud of atoms in equilibrium persist forever without change? No! When atoms bump into each other, the electrons are bumped into excited states. They then drop to lower state, emitting light at specific wavelengths. Or, if the cloud is opaque, its surface emits a blackbody continuum of lig ...
... Will this cloud of atoms in equilibrium persist forever without change? No! When atoms bump into each other, the electrons are bumped into excited states. They then drop to lower state, emitting light at specific wavelengths. Or, if the cloud is opaque, its surface emits a blackbody continuum of lig ...
$doc.title
... at lower masses than this limit, stars are called “brown dwarfs”. We will see that the upper mass limit is related to pulsational instabilities brought on by the very high radiation pressure in such luminous stars. Movie: simulation of orbiting binary stars by Terry Herter of Cornell, http://instruc ...
... at lower masses than this limit, stars are called “brown dwarfs”. We will see that the upper mass limit is related to pulsational instabilities brought on by the very high radiation pressure in such luminous stars. Movie: simulation of orbiting binary stars by Terry Herter of Cornell, http://instruc ...
Pop Quiz Question
... Globular cluster: hundreds of thousands stars in a dense ball (M80), ~60-150 ly across, >10 billion years, in halo of the Milky Way ...
... Globular cluster: hundreds of thousands stars in a dense ball (M80), ~60-150 ly across, >10 billion years, in halo of the Milky Way ...
The Rocket Science of Launching Stellar Disks
... – Driven by line-scattering of star’s radiation – Rotation can lead to Wind Compressed Disk (WCD) – But still lacks angular momentum for orbit ...
... – Driven by line-scattering of star’s radiation – Rotation can lead to Wind Compressed Disk (WCD) – But still lacks angular momentum for orbit ...
r - QUB Astrophysics Research Centre
... (surface)~10-4 kg m-3. Much smaller than mean density (mean)~1.4103 kg m-3 (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2106 K). Thus we make two approximations for the surface boundary conditions: = T = 0 at r=rs i.e. that ...
... (surface)~10-4 kg m-3. Much smaller than mean density (mean)~1.4103 kg m-3 (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2106 K). Thus we make two approximations for the surface boundary conditions: = T = 0 at r=rs i.e. that ...
MSci Astrophysics 210PHY412 - Queen's University Belfast
... (surface)~10-4 kg m-3. Much smaller than mean density (mean)~1.4103 kg m-3 (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2106 K). Thus we make two approximations for the surface boundary conditions: = T = 0 at r=rs i.e. that ...
... (surface)~10-4 kg m-3. Much smaller than mean density (mean)~1.4103 kg m-3 (which we derived). We know the surface temperature (Teff=5780K) is much smaller than its minimum mean temperature (2106 K). Thus we make two approximations for the surface boundary conditions: = T = 0 at r=rs i.e. that ...
Lab 2
... -Cass: A Be emission line-star. Antares ( Sco). A red supergiant. P-Cygni: A mass losing supergiant. This is about mV ~ 5 and will require long exposures. Do only the part of the spectrum centered on H-alpha. Jupiter: This planet is now available. I want to see if we can (a) detect the [SII] 67 ...
... -Cass: A Be emission line-star. Antares ( Sco). A red supergiant. P-Cygni: A mass losing supergiant. This is about mV ~ 5 and will require long exposures. Do only the part of the spectrum centered on H-alpha. Jupiter: This planet is now available. I want to see if we can (a) detect the [SII] 67 ...
File - Adriana Romo
... Interviewer: How did the white dwarf get its name? Scientist: They got their name because of the white color of the first few white dwarfs discovered. Interviewer: How are white dwarfs characterized? Scientist: They are characterized by a low luminosity, a mass close to that of our sun,and radius o ...
... Interviewer: How did the white dwarf get its name? Scientist: They got their name because of the white color of the first few white dwarfs discovered. Interviewer: How are white dwarfs characterized? Scientist: They are characterized by a low luminosity, a mass close to that of our sun,and radius o ...
HR Diagram Explorer
... Check show isoradius lines. Note that at each point on a green line, stars have the same value of radius. Use these isoradius lines to check your answers in the table above. ...
... Check show isoradius lines. Note that at each point on a green line, stars have the same value of radius. Use these isoradius lines to check your answers in the table above. ...
30 Doradus - HubbleSOURCE
... 1. Gigantic regions of star formation are complex systems where different generations of star affect each other’s evolution 2. At high redshift we cannot see the complexity of the star forming regions, and we derive a simplified history of star formation 3. A comparison between what we see in nearby ...
... 1. Gigantic regions of star formation are complex systems where different generations of star affect each other’s evolution 2. At high redshift we cannot see the complexity of the star forming regions, and we derive a simplified history of star formation 3. A comparison between what we see in nearby ...
Angle d = Latitude Angle c = Altitude Polaris Angle c
... Our Observing Latitude determines what celestial objects are seen above our local horizon ...
... Our Observing Latitude determines what celestial objects are seen above our local horizon ...
Document
... • The Local Group counts more than 54 galaxies (the majority are dwarf galaxies). • Its center is somewhere between the Milky Way and the Andromeda galaxy (M31). • Its diameter is ~10,000,000 light years. • The total mass of the Local Group is ~1012 the mass of our sun, and more that 2 times the tot ...
... • The Local Group counts more than 54 galaxies (the majority are dwarf galaxies). • Its center is somewhere between the Milky Way and the Andromeda galaxy (M31). • Its diameter is ~10,000,000 light years. • The total mass of the Local Group is ~1012 the mass of our sun, and more that 2 times the tot ...
OBJXlab-JCU_Alt
... reader tries to find one person in a crowd of thousands—you can stare straight at the object you’re looking for, yet fail to find what’s right before your eyes. To appreciate the difficulty of discovering something of interest among the multitude of lights in the sky, consider the following: On a da ...
... reader tries to find one person in a crowd of thousands—you can stare straight at the object you’re looking for, yet fail to find what’s right before your eyes. To appreciate the difficulty of discovering something of interest among the multitude of lights in the sky, consider the following: On a da ...
Session 2 - Early Autum Sky
... the constellation Sagittarius (where Jupiter is currently located now in fall of 2008), up through the northwest toward Cassiopeia. This glow will be brightest in Sagittarius, but still very noticeable in Aquila and Cygnus. The glow is caused by millions of stars which are part of our galaxy. Indivi ...
... the constellation Sagittarius (where Jupiter is currently located now in fall of 2008), up through the northwest toward Cassiopeia. This glow will be brightest in Sagittarius, but still very noticeable in Aquila and Cygnus. The glow is caused by millions of stars which are part of our galaxy. Indivi ...
The Milky Way - TCNJ | The College of New Jersey
... • Out to solar distance (about 8 kpc) the mass is about 1 x 1011 M (mostly stars) • Out to ~15 kpc, (the visible radius) a good estimate for the mass is nearly 4 x 1011 M ...
... • Out to solar distance (about 8 kpc) the mass is about 1 x 1011 M (mostly stars) • Out to ~15 kpc, (the visible radius) a good estimate for the mass is nearly 4 x 1011 M ...
Unit 1
... • A. the slowing of rotation caused by slow expansion of the neutron star • B. friction between the stellar surface and interstellar medium • C. loss of rotational energy to provide energy for the emission of radiation • D. a build-up of the magnetic field with rotational energy being transferred to ...
... • A. the slowing of rotation caused by slow expansion of the neutron star • B. friction between the stellar surface and interstellar medium • C. loss of rotational energy to provide energy for the emission of radiation • D. a build-up of the magnetic field with rotational energy being transferred to ...
1 Exoplanets 2 Types of Exoplanets
... This is the detection method utilized by the Kepler Space Telescope where it looks for exoplanets crossing in front of (transiting) the host star. Kepler picks a particular field of view in the sky and selects around a hundred thousand stars to observe over a given time period. It then measures how ...
... This is the detection method utilized by the Kepler Space Telescope where it looks for exoplanets crossing in front of (transiting) the host star. Kepler picks a particular field of view in the sky and selects around a hundred thousand stars to observe over a given time period. It then measures how ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.