aaswinter06
... • Evidence for a hot, blue companion (B3 V) was discovered when V838 Mon cooled (10,11). The progenitor of the outbursting component has been estimated to be 1) a very massive (65 Msolar), hot (Teff ~ 50,000 K), evolved star such as a Wolf-Rayet star (7); or 2) a main sequence or pre-main sequence s ...
... • Evidence for a hot, blue companion (B3 V) was discovered when V838 Mon cooled (10,11). The progenitor of the outbursting component has been estimated to be 1) a very massive (65 Msolar), hot (Teff ~ 50,000 K), evolved star such as a Wolf-Rayet star (7); or 2) a main sequence or pre-main sequence s ...
Chapter 13 Other Planetary Systems Why is it so difficult to detect
... themselves • Indirect: Measurements of stellar properties revealing the effects of orbiting planets ...
... themselves • Indirect: Measurements of stellar properties revealing the effects of orbiting planets ...
Powerpoint file
... • 0.5–1% of solar type stars have short period giant plants • Exoplanets have a wide range of orbital eccentricities (most are not in circular orbits). This indicates a much more dynamical past than for our Solar System! • Massive planets tend to be in eccentric orbits and large orbital radii ...
... • 0.5–1% of solar type stars have short period giant plants • Exoplanets have a wide range of orbital eccentricities (most are not in circular orbits). This indicates a much more dynamical past than for our Solar System! • Massive planets tend to be in eccentric orbits and large orbital radii ...
Circumstellar Disks: IRAS to ALMA (by way of HST) Dr. Karl Stapelfeldt
... IRAS was ideal for detecting the faint glow of cool circumstellar dust IRAS found dust around more than 50% of young stars in nearby molecular clouds (for stars > 1 Lsun) IRAS data allowed astronomers to classify young stellar objects according to IR spectral energy distribution Molecular gas discov ...
... IRAS was ideal for detecting the faint glow of cool circumstellar dust IRAS found dust around more than 50% of young stars in nearby molecular clouds (for stars > 1 Lsun) IRAS data allowed astronomers to classify young stellar objects according to IR spectral energy distribution Molecular gas discov ...
15_ClickerQuestions
... 3) large jovians with orbits more like terrestrial planets. 4) terrestrials very close to their star, and transiting its disk. 5) imaginary, with no present proof that they really exist. ...
... 3) large jovians with orbits more like terrestrial planets. 4) terrestrials very close to their star, and transiting its disk. 5) imaginary, with no present proof that they really exist. ...
The Formation of Systems with Tightly
... the Solar System are the Calcium-Aluminum-rich Inclusions (CAIs), which are 4568.2 Myr old (Bouvier & Wadhwa 2010). Their age dispersion is very small, suggesting that CAIs formed during the earliest stages of disk evolution and set t = 0 for planet formation. Iron meteorite parent bodies formed ove ...
... the Solar System are the Calcium-Aluminum-rich Inclusions (CAIs), which are 4568.2 Myr old (Bouvier & Wadhwa 2010). Their age dispersion is very small, suggesting that CAIs formed during the earliest stages of disk evolution and set t = 0 for planet formation. Iron meteorite parent bodies formed ove ...
The Existence of an Exoplanet Methodology Description of
... light recorded. Our data supports the notion that an exoplanet exists and orbits the star WASP-1. By the shape of our data, we can determine that the exoplanet orbits its host star on a direct viewing angle as seen from Earth. The entire transit, as recorded, took a little under four hours. From thi ...
... light recorded. Our data supports the notion that an exoplanet exists and orbits the star WASP-1. By the shape of our data, we can determine that the exoplanet orbits its host star on a direct viewing angle as seen from Earth. The entire transit, as recorded, took a little under four hours. From thi ...
ATA2010
... Fe-peak elements but on longer timescales ~ 109 years AGB stars over wide range of mass produce s-process elements (Sr, Zr,Ba), again on longer timescales ~ 109 years If we see stars which are rich in -elements relative to iron, this means that the chemical evolution of the gas from which they form ...
... Fe-peak elements but on longer timescales ~ 109 years AGB stars over wide range of mass produce s-process elements (Sr, Zr,Ba), again on longer timescales ~ 109 years If we see stars which are rich in -elements relative to iron, this means that the chemical evolution of the gas from which they form ...
Betelgeuse
... derived from the Arabic word bat aldshauzâ, which means “the giant’s shoulder.” or “armpit” 8.5 million yrs old (Sun is 4.6 billion yrs old) 600 light years away 1000 times bigger than the Sun ...
... derived from the Arabic word bat aldshauzâ, which means “the giant’s shoulder.” or “armpit” 8.5 million yrs old (Sun is 4.6 billion yrs old) 600 light years away 1000 times bigger than the Sun ...
Document
... Other phenomena can produce radial velocity variations and thus „pretend“ to be a planet: ...
... Other phenomena can produce radial velocity variations and thus „pretend“ to be a planet: ...
Planet-finding Activity Guide How do we find planets around other
... scattered by the shade and telescope and starlight reflected by any planets and dust clouds orbiting the star. ...
... scattered by the shade and telescope and starlight reflected by any planets and dust clouds orbiting the star. ...
Origin of the Solar System
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
To Be or Not to Be: The Mysteries of Disk Formation Around Rapidly
... Putting the Spin on Be Stars Why are Be stars rotating so quickly? • born with high angular momentum • experiencing a re-distribution of internal angular momentum near the conclusion of core hydrogen burning • received mass and angular momentum through mass transfer from a binary companion (this mu ...
... Putting the Spin on Be Stars Why are Be stars rotating so quickly? • born with high angular momentum • experiencing a re-distribution of internal angular momentum near the conclusion of core hydrogen burning • received mass and angular momentum through mass transfer from a binary companion (this mu ...
ph709-13
... have its diameter measured, at 1.7 times that of the Earth (which would give it a volume 4.9 times Earth's). The mass of COROT-7b is about 4.8 Earth masses,[2] so its density is similar to Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, in ...
... have its diameter measured, at 1.7 times that of the Earth (which would give it a volume 4.9 times Earth's). The mass of COROT-7b is about 4.8 Earth masses,[2] so its density is similar to Earth's. It is possible from this to exclude that the planet is made purely of iron, but other compositions, in ...
Lecture26
... interstellar gas cloud leads naturally to a “central star + rotating disk” configuration the “solar nebula” – The planets form from material in the disk – This is why the planets all orbit the Sun in the same direction and in very nearly the same “ecliptic” plane ...
... interstellar gas cloud leads naturally to a “central star + rotating disk” configuration the “solar nebula” – The planets form from material in the disk – This is why the planets all orbit the Sun in the same direction and in very nearly the same “ecliptic” plane ...
L87 THE b PICTORIS MOVING GROUP B. ZUCkERMAN AND
... Subject headings: open clusters and associations: individual (b Pictoris) — stars: kinematics — stars: pre–main-sequence et al. (1999) estimated that GJ 799 and GJ 803, and thus b Pic, are 20 " 10 million yr old. It is a consensus that most stars, especially relatively massive ones such as b Pic, fo ...
... Subject headings: open clusters and associations: individual (b Pictoris) — stars: kinematics — stars: pre–main-sequence et al. (1999) estimated that GJ 799 and GJ 803, and thus b Pic, are 20 " 10 million yr old. It is a consensus that most stars, especially relatively massive ones such as b Pic, fo ...
S T A R S
... about 68 light years away. Aldebaran is one of the few first magnitude stars that may be occulted by the moon. The disappearance of the star is startlingly abrupt, particularly so at the moons dark edge. The V shaped central group is the Hyades star cluster group and represents the bull’s head – Ald ...
... about 68 light years away. Aldebaran is one of the few first magnitude stars that may be occulted by the moon. The disappearance of the star is startlingly abrupt, particularly so at the moons dark edge. The V shaped central group is the Hyades star cluster group and represents the bull’s head – Ald ...
Full Article - Starry Night Software
... Let’s review the seven planets’ physical characteristics. Many parameters have been calculated, including their sizes, masses, and densities, their average surface temperatures, and the amount of irradiation (sunlight) they receive. We are least certain about the TRAPPIST-1h values because fewer tra ...
... Let’s review the seven planets’ physical characteristics. Many parameters have been calculated, including their sizes, masses, and densities, their average surface temperatures, and the amount of irradiation (sunlight) they receive. We are least certain about the TRAPPIST-1h values because fewer tra ...
Indirect
... interstellar gas cloud leads naturally to a “central star + rotating disk” configuration the “solar nebula” – The planets form from material in the disk – This is why the planets all orbit the Sun in the same direction and in very nearly the same “ecliptic” plane ...
... interstellar gas cloud leads naturally to a “central star + rotating disk” configuration the “solar nebula” – The planets form from material in the disk – This is why the planets all orbit the Sun in the same direction and in very nearly the same “ecliptic” plane ...
Planet formation Abstract Megan K Pickett and Andrew J Lim
... universe, but they are not among the extrasolar planets so far detected and, at any rate, their small masses make them invisible to detection by current spectroscopic methods. It is possible that Uranus and Neptune are examples of such objects, although they might owe their relatively small gaseous ...
... universe, but they are not among the extrasolar planets so far detected and, at any rate, their small masses make them invisible to detection by current spectroscopic methods. It is possible that Uranus and Neptune are examples of such objects, although they might owe their relatively small gaseous ...
... cannot see inside the disks surrounding the stars nor can they observe all the chemical processes at work. Meteoriticists have the products of only one star's nebula, but they have very detailed information about it. They even have pieces of nebular products. Thus, astronomy and studies of primitive ...
IMPAIRMENT OF VISION:
... The lord of 2 Sun, Mars, Mercury (l/o 12,3) and Uranus are conjoined in Venus sign and Venus is 12 to its sign and is debilited. L/o 6, Jupiter ( R) is aspecting all of them expect Venus. Venus is also evil as 8th CSL. And no planet in its star. 2nd Cuspa;l Sublord : Moon: it is the l/o 1. (It is d ...
... The lord of 2 Sun, Mars, Mercury (l/o 12,3) and Uranus are conjoined in Venus sign and Venus is 12 to its sign and is debilited. L/o 6, Jupiter ( R) is aspecting all of them expect Venus. Venus is also evil as 8th CSL. And no planet in its star. 2nd Cuspa;l Sublord : Moon: it is the l/o 1. (It is d ...
Beta Pictoris
Beta Pictoris (β Pic, β Pictoris) is the second brightest star in the constellation Pictor. It is located 63.4 light years from our solar system, and is 1.75 times as massive and 8.7 times as luminous as the Sun. The Beta Pictoris system is very young, only 8–20 million years old, although it is already in the main sequence stage of its evolution. Beta Pictoris is the title member of the Beta Pictoris moving group, an association of young stars which share the same motion through space and have the same age.Beta Pictoris shows an excess of infrared emission compared to normal stars of its type, which is caused by large quantities of dust and gas (including carbon monoxide) near the star. Detailed observations reveal a large disk of dust and gas orbiting the star, which was the first debris disk to be imaged around another star. In addition to the presence of several planetesimal belts and cometary activity, there are indications that planets have formed within this disk and that the processes of planet formation may still be ongoing. Material from the Beta Pictoris debris disk is thought to be the dominant source of interstellar meteoroids in our solar system.The European Southern Observatory (ESO) has confirmed the presence of a planet, Beta Pictoris b, matching previous predictions, through the use of direct imagery, orbiting in the plane of the debris disk surrounding the star. This planet is currently the closest extrasolar planet to its star ever photographed: the observed separation is roughly the same as the distance between Saturn and the Sun.