X-ray Astronomy and the search for Black Holes
... producing a blue continuum that ionizes the wind and other circumstellar matter. ...
... producing a blue continuum that ionizes the wind and other circumstellar matter. ...
Mathematics in Art and Architecture GEM1518K
... radius so that no part of the Earth is significantly closer to any given star than any other part. Therefore, the sky always looks like a great sphere centered on your position. The celestial sphere (and, therefore, the stars) appears to move westward--stars rise in the east and set in the west. Eve ...
... radius so that no part of the Earth is significantly closer to any given star than any other part. Therefore, the sky always looks like a great sphere centered on your position. The celestial sphere (and, therefore, the stars) appears to move westward--stars rise in the east and set in the west. Eve ...
Neutrinos and Supernovae
... are defined by discrete momentum values, the exclusion principle demands that every particle have a unique momentum and hence a distinct energy. In an ordinary, classical gas, particles occupy energy states that are distributed about the mean thermal energy of the gas. Typically, most of the low-ene ...
... are defined by discrete momentum values, the exclusion principle demands that every particle have a unique momentum and hence a distinct energy. In an ordinary, classical gas, particles occupy energy states that are distributed about the mean thermal energy of the gas. Typically, most of the low-ene ...
PDF Manual
... The example programs provided with source code in User-RPL are freeware. You might give them away, but most of them are only usable with the libraries. QVSOP and its source are included in the package. It is officially distributed under the GNU license, so you may use it for own projects or distribu ...
... The example programs provided with source code in User-RPL are freeware. You might give them away, but most of them are only usable with the libraries. QVSOP and its source are included in the package. It is officially distributed under the GNU license, so you may use it for own projects or distribu ...
PDF - ASSA
... But there is more! Located just 5' south-east is the fainter, wider, more-equal pair HJ 4252, which shares the field with upsilon in a 150-mm f/8 refractor at 136x. This second set consists of 8.7 and 9.1 magnitude stars separated by 12.2''. Both doubles provide an interesting study in contrasts: fai ...
... But there is more! Located just 5' south-east is the fainter, wider, more-equal pair HJ 4252, which shares the field with upsilon in a 150-mm f/8 refractor at 136x. This second set consists of 8.7 and 9.1 magnitude stars separated by 12.2''. Both doubles provide an interesting study in contrasts: fai ...
The Nakshatras of Vedic Astrology
... “In these twenty-eight mansions do lye hid many secrets of the wisdom of the ancients by which they wrought wonders on all things which are under the circle of the Moon”. Cornelius AgrippaAlchemist/Magician (1500 CE) Historical Origins of the Lunar Mansions Before the ecliptic was divided into the t ...
... “In these twenty-eight mansions do lye hid many secrets of the wisdom of the ancients by which they wrought wonders on all things which are under the circle of the Moon”. Cornelius AgrippaAlchemist/Magician (1500 CE) Historical Origins of the Lunar Mansions Before the ecliptic was divided into the t ...
Galaxy Structure
... gas. A much better census of the amount of molecular gas can be obtained via the optically thinner 13CO(1–0) line. Stark (1987) presents a Galactic survey of 47 000 positions observed in the 13CO(1–0) line emission. The data show a clear presence of voids in the molecular gas disk of the Milky Way. ...
... gas. A much better census of the amount of molecular gas can be obtained via the optically thinner 13CO(1–0) line. Stark (1987) presents a Galactic survey of 47 000 positions observed in the 13CO(1–0) line emission. The data show a clear presence of voids in the molecular gas disk of the Milky Way. ...
![Module 4.1 - The Scale of the Universe [slide 1] We now turn to](http://s1.studyres.com/store/data/002846843_1-9e0ec9d1a2abbbab3c0d406694bfc4e2-300x300.png)
Lecture Notes – Galaxies
... Galaxies were first systematically categorized by Edwin Hubble who in 1929 classified them according to shape: the Hubble Classification Scheme or Tuning Fork Diagram Elliptical galaxies (‘Early type’) E0 – E7 (0 spherical, 7 most distorted): S0 These galaxies are intermediate between E0 and Sa – th ...
... Galaxies were first systematically categorized by Edwin Hubble who in 1929 classified them according to shape: the Hubble Classification Scheme or Tuning Fork Diagram Elliptical galaxies (‘Early type’) E0 – E7 (0 spherical, 7 most distorted): S0 These galaxies are intermediate between E0 and Sa – th ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... population implies that star formation occurred in Crater perhaps as recently as 400 Myr ago. No globular cluster has ever accomplished the feat of prolonging its star formation by several Gyr. Therefore, if our hypothesis that the blue bright stars in Crater are blue loop giants is correct, the new ...
... population implies that star formation occurred in Crater perhaps as recently as 400 Myr ago. No globular cluster has ever accomplished the feat of prolonging its star formation by several Gyr. Therefore, if our hypothesis that the blue bright stars in Crater are blue loop giants is correct, the new ...
THE DISCOVERY OF - UC Berkeley Astronomy w
... observers and theorists are tackling a host of intriguing questions: How many brown dwarfs are there? What is their range of masses? Is there a continuum of objects all the way down to the mass of Jupiter? And did they all originate in the same way? The search for brown dwarfs was long and difficult ...
... observers and theorists are tackling a host of intriguing questions: How many brown dwarfs are there? What is their range of masses? Is there a continuum of objects all the way down to the mass of Jupiter? And did they all originate in the same way? The search for brown dwarfs was long and difficult ...
Hot Jupiters Provoke Their Own Host Suns to Wobble
... If you have a dark sky and a scope that can reach 13th-magnitude galaxies, here's an observing project you've probably never thought of: Steve Gottlieb's "Going Deep" tour of Vorontsov-Velyaminov galaxy pairs now high in the evening sky. See the September Sky & Telescope, page 60, with charts and pi ...
... If you have a dark sky and a scope that can reach 13th-magnitude galaxies, here's an observing project you've probably never thought of: Steve Gottlieb's "Going Deep" tour of Vorontsov-Velyaminov galaxy pairs now high in the evening sky. See the September Sky & Telescope, page 60, with charts and pi ...
The self-enrichment of galactic halo globular clusters: a clue to their
... by Brown et al. within the context of the Fall and Rees theory. Following Jehin et al., thick disk and field halo stars were born in globular clusters from which they escaped either during an early disruption of the proto-globular cluster (Pop IIa) or through a later disruption or evaporation proces ...
... by Brown et al. within the context of the Fall and Rees theory. Following Jehin et al., thick disk and field halo stars were born in globular clusters from which they escaped either during an early disruption of the proto-globular cluster (Pop IIa) or through a later disruption or evaporation proces ...
Historic mass loss from the RS Ophiuchi system
... Stars with an initial mass between ∼ 1 and ∼ 40 M¯ become hydrogen/heliumshell-burning Asymptotic Giant Branch (AGB) stars or core-helium-burning red supergiants (RSG). These phases are characterised by cool, molecular atmospheres giving rise to M spectral types (S or C for some chemically peculiar ...
... Stars with an initial mass between ∼ 1 and ∼ 40 M¯ become hydrogen/heliumshell-burning Asymptotic Giant Branch (AGB) stars or core-helium-burning red supergiants (RSG). These phases are characterised by cool, molecular atmospheres giving rise to M spectral types (S or C for some chemically peculiar ...
Open clusters in the Third Galactic Quadrant III. Alleged binary
... to the magnitude limits where they become immersed in the field star distribution. Third, for young clusters, the V vs. U −B diagram can be particularly useful for eliminating most A-F type foreground stars that usually contaminate the vertical part (early type) of cluster sequences in the V/B − V p ...
... to the magnitude limits where they become immersed in the field star distribution. Third, for young clusters, the V vs. U −B diagram can be particularly useful for eliminating most A-F type foreground stars that usually contaminate the vertical part (early type) of cluster sequences in the V/B − V p ...
A spectroscopic investigation of the O-type star - ORBi
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
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.