Meilland
... Physical processes like convection, rotation, magnetic fields, nonradial pulsations, etc. are based on fundamental parameters M⋆ , R⋆ , L⋆, Teff , geff , r , abundances ...
... Physical processes like convection, rotation, magnetic fields, nonradial pulsations, etc. are based on fundamental parameters M⋆ , R⋆ , L⋆, Teff , geff , r , abundances ...
Temperate Earth-sized planets transiting a nearby ultracool dwarf star
... ranging from metal-rich Mercury-sized planets6 to more hospitable volatile-rich Earth-sized planets7. Here we report observations of three short-period Earth-sized planets transiting an ultracool dwarf star only 12 parsecs away. The inner two planets receive four times and two times the irradiation ...
... ranging from metal-rich Mercury-sized planets6 to more hospitable volatile-rich Earth-sized planets7. Here we report observations of three short-period Earth-sized planets transiting an ultracool dwarf star only 12 parsecs away. The inner two planets receive four times and two times the irradiation ...
... The temperature range over which the growth occurred is about 100 oC, so Meibom was able to calculate a cooling rate for the portion of the nebula in which the metal grains grew. By dividing the temperature interval (100 oC) by the growth time (19 days, or 456 hours), he found a cooling rate of 0.2 ...
PSC100 Summary Chapters 10 to Chapter 20
... temperatures and densities in the core that push the outer layers of the star outward. These outer layers cool so that the star not only appears much larger but also takes on a reddish coloration. This period of a star's life is called the RED GIANT phase. Meanwhile the core is really much hotter du ...
... temperatures and densities in the core that push the outer layers of the star outward. These outer layers cool so that the star not only appears much larger but also takes on a reddish coloration. This period of a star's life is called the RED GIANT phase. Meanwhile the core is really much hotter du ...
Star Classification and its Connection to Exoplanets.
... 114762, they noticed a slight wobble. This slight wobble resulted from a gravitational pull from some other celestial body, and astronomers concluded that it must be either a brown dwarf or a planet. Although today, astronomers believe that HD 114762 b is a brown dwarf due to more precise measuremen ...
... 114762, they noticed a slight wobble. This slight wobble resulted from a gravitational pull from some other celestial body, and astronomers concluded that it must be either a brown dwarf or a planet. Although today, astronomers believe that HD 114762 b is a brown dwarf due to more precise measuremen ...
Summary Of the Structure of the Milky Way
... nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allow astronomers to know the direction to the center of our gala ...
... nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allow astronomers to know the direction to the center of our gala ...
Geoscience
... a.Convection currents c. Slab pulling b.The speed of the Earth’s rotation d. Hot spot displacement Yellowstone is a hot-spot, supervolcano. What plate does the hot spot come up through? a.Wyoming plate c. Colorado plate b.North American plate d. Pacific Plate Things will become very “interesting” of ...
... a.Convection currents c. Slab pulling b.The speed of the Earth’s rotation d. Hot spot displacement Yellowstone is a hot-spot, supervolcano. What plate does the hot spot come up through? a.Wyoming plate c. Colorado plate b.North American plate d. Pacific Plate Things will become very “interesting” of ...
Measuring Interstellar Extinction
... The interstellar extinction of starlight is the most indicative phenomenon revealing the presence of diffuse dark matter in the Galaxy. The first documented observation of extinction effects, appearing in the form of dark regions, is that of Sir William Herschel who in 1784 observed a section of the ...
... The interstellar extinction of starlight is the most indicative phenomenon revealing the presence of diffuse dark matter in the Galaxy. The first documented observation of extinction effects, appearing in the form of dark regions, is that of Sir William Herschel who in 1784 observed a section of the ...
The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL)
... Star formation triggered by expanding H ii regions The Spitzer–GLIMPSE images at 8 µm have unveiled a “bubbling Galactic disc”. More than 600 bubbles with diameters of a few arcminutes have been catalogued by Churchwell et al. (2006, 2007). As shown by Deharveng et al. (2010), more than 85 % of thes ...
... Star formation triggered by expanding H ii regions The Spitzer–GLIMPSE images at 8 µm have unveiled a “bubbling Galactic disc”. More than 600 bubbles with diameters of a few arcminutes have been catalogued by Churchwell et al. (2006, 2007). As shown by Deharveng et al. (2010), more than 85 % of thes ...
printer-friendly version of benchmark
... stars are large enough and bright enough that we detect them with our naked eye to distances as far as 2000 light years (http://www.uwgb.edu/dutchs/CosmosNotes/distance.htm). Figure 4 is a chart of some of the nearest stars to Earth. After the Sun, Proxima Centauri is closest to Earth at 4.2 light ...
... stars are large enough and bright enough that we detect them with our naked eye to distances as far as 2000 light years (http://www.uwgb.edu/dutchs/CosmosNotes/distance.htm). Figure 4 is a chart of some of the nearest stars to Earth. After the Sun, Proxima Centauri is closest to Earth at 4.2 light ...
Computer Modeling the Line of Sight Column Densities of Polars
... Polars are a type of CV that has a strong magnetic field around 100 million times earths magnetic field. The plasma is not allowed to form an accretion disc because it follows the magnetic field lines. The stream takes a more direct path toward the white dwarf. The high speeds of the impacting parti ...
... Polars are a type of CV that has a strong magnetic field around 100 million times earths magnetic field. The plasma is not allowed to form an accretion disc because it follows the magnetic field lines. The stream takes a more direct path toward the white dwarf. The high speeds of the impacting parti ...
MySci Unit 23
... appearance of some stars in the night sky. PS2.B. Types of Interactions The gravitational force of Earth acting on an object near Earth’s surface pulls that object toward the planet’s center. (5-PS2-1) ESS1.A. The Universe and its Stars The sun is a star that appears larger and brighter than other s ...
... appearance of some stars in the night sky. PS2.B. Types of Interactions The gravitational force of Earth acting on an object near Earth’s surface pulls that object toward the planet’s center. (5-PS2-1) ESS1.A. The Universe and its Stars The sun is a star that appears larger and brighter than other s ...
astronomy
... distances, and the forces that tie them together. Although astronomy began as simply a means of telling time and location, it soon developed into a full-fledged area of study, characterized by patient observation and detailed record-keeping. As early as 2500 BC in what is now England, work began on ...
... distances, and the forces that tie them together. Although astronomy began as simply a means of telling time and location, it soon developed into a full-fledged area of study, characterized by patient observation and detailed record-keeping. As early as 2500 BC in what is now England, work began on ...
Small Wonders: Andromeda
... skies Mt. Wilson will probably ever see to resolve the individual stars throughout M31.Although these astronomers studied M31 with the most powerful telescopes of the time, it's visible to the naked eye under all but the worst conditions of light pollution, Andromeda - the 31st entry in Messiers cat ...
... skies Mt. Wilson will probably ever see to resolve the individual stars throughout M31.Although these astronomers studied M31 with the most powerful telescopes of the time, it's visible to the naked eye under all but the worst conditions of light pollution, Andromeda - the 31st entry in Messiers cat ...
Why Spectroscopy?
... you will here hydrogen alpha line mentioned a lot. Since stars are mainly hydrogen and since the hydrogen alpha line is the most prominent line for the element, it gets lots of study. For epsilon Aurigae other hydrogen lines are also of . interest including the beta and gamma lines. The sodium D lin ...
... you will here hydrogen alpha line mentioned a lot. Since stars are mainly hydrogen and since the hydrogen alpha line is the most prominent line for the element, it gets lots of study. For epsilon Aurigae other hydrogen lines are also of . interest including the beta and gamma lines. The sodium D lin ...
Constellation ARA
... planet 12152 Aratus are Hades, and Poseidon. When the named in his honour youngest child, Zeus, was born, his mother Rhea hid him in Crete and gave Cronus a stone to swallow, telling him the stone was Zeus. When Zeus grew up, he made Cronus vomit his brothers and sisters. Once freed, they banded tog ...
... planet 12152 Aratus are Hades, and Poseidon. When the named in his honour youngest child, Zeus, was born, his mother Rhea hid him in Crete and gave Cronus a stone to swallow, telling him the stone was Zeus. When Zeus grew up, he made Cronus vomit his brothers and sisters. Once freed, they banded tog ...
Archaeology of the Milky Way - Max-Planck
... spherical region around the center with a diameter of around 16,000 lightyears. The central body itself is invisible. It is very likely a black hole with a mass of roughly four million solar masses. The remaining 5 percent of the stars move far above or far below the disk in the so-called halo aroun ...
... spherical region around the center with a diameter of around 16,000 lightyears. The central body itself is invisible. It is very likely a black hole with a mass of roughly four million solar masses. The remaining 5 percent of the stars move far above or far below the disk in the so-called halo aroun ...
Searching for Dwarf Galaxies and Population III Star
... a result, the primary identifying feature in the rest-frame ultraviolet spectra of early stars is a strong HeII (1640 Å) emission line. One of the best environments to discover these sources is the chemically unevolved surroundings of a large galaxy or proto-cluster of galaxies at high redshift. The ...
... a result, the primary identifying feature in the rest-frame ultraviolet spectra of early stars is a strong HeII (1640 Å) emission line. One of the best environments to discover these sources is the chemically unevolved surroundings of a large galaxy or proto-cluster of galaxies at high redshift. The ...
Question paper - Unit A183/02 - Module P7 - Higher tier
... OCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all copyright holders whose work is used in this paper. To avoid the issue of disclosure of answer-related information to candidates, all co ...
... OCR is committed to seeking permission to reproduce all third-party content that it uses in its assessment materials. OCR has attempted to identify and contact all copyright holders whose work is used in this paper. To avoid the issue of disclosure of answer-related information to candidates, all co ...
uniview glossary - DMNS Galaxy Guide Portal
... Saturn was named for the Roman god of agriculture and lies 885 million miles from the Sun, (9.6 AU). Saturn takes 29.5 years to orbit, but only 10.7 hours to rotate (day). Its diameter is 75,000 miles, making it the second largest planet. Its mass is 95 times that of Earth. It is the second of the f ...
... Saturn was named for the Roman god of agriculture and lies 885 million miles from the Sun, (9.6 AU). Saturn takes 29.5 years to orbit, but only 10.7 hours to rotate (day). Its diameter is 75,000 miles, making it the second largest planet. Its mass is 95 times that of Earth. It is the second of the f ...
R136a1
RMC 136a1 (usually abbreviated to R136a1) is a Wolf-Rayet star located at the center of R136, the central condensation of stars of the large NGC 2070 open cluster in the Tarantula Nebula. It lies at a distance of about 50 kiloparsecs (163,000 light-years) in the Large Magellanic Cloud. It has the highest mass and luminosity of any known star, at 265 M☉ and 8.7 million L☉, and also one of the hottest at over 50,000 K.