Starburst Galaxies - Beck-Shop
... (Box 2.2). H II regions are some of the most spectacular sights in the sky – rivalling galaxies – and the well-known Orion Nebula (M 42, Fig. 2.1) is exactly just such a region that has developed on the nearest side to us of the Orion GMC. The young stars, that can now be seen directly, have masses ...
... (Box 2.2). H II regions are some of the most spectacular sights in the sky – rivalling galaxies – and the well-known Orion Nebula (M 42, Fig. 2.1) is exactly just such a region that has developed on the nearest side to us of the Orion GMC. The young stars, that can now be seen directly, have masses ...
Planets and Moons - Fraser Heights Chess Club
... • The Local Group is the galaxy group that includes the Milky Way. It comprises more than 54 galaxies, most of them being dwarf galaxies. Its gravitational center is located somewhere between the Milky Way and the Andromeda Galaxy. • The group is a part of the larger Virgo Supercluster or the Local ...
... • The Local Group is the galaxy group that includes the Milky Way. It comprises more than 54 galaxies, most of them being dwarf galaxies. Its gravitational center is located somewhere between the Milky Way and the Andromeda Galaxy. • The group is a part of the larger Virgo Supercluster or the Local ...
Tidal Evolution of Close-In Extra-Solar Planets
... tidal dissipation makes the problem even worse. On the other hand, a key factor in the reconciliation may be that, while the current tidal heating rate is high and increasing, in the recent past the heating rate was much lower. HAT-P-2 b is still on the increasing part of the heating curve, which is ...
... tidal dissipation makes the problem even worse. On the other hand, a key factor in the reconciliation may be that, while the current tidal heating rate is high and increasing, in the recent past the heating rate was much lower. HAT-P-2 b is still on the increasing part of the heating curve, which is ...
Oxygen and Neon Abundances of B-Type Stars in Comparison with
... contradicting the Galactic chemical evolution, we carried out oxygen abundance determinations for 64 mid- through late-B stars by using the O I 6156–8 lines while taking into account the non-LTE effect, and compared them with the solar O abundance established in the same manner. The resulting mean o ...
... contradicting the Galactic chemical evolution, we carried out oxygen abundance determinations for 64 mid- through late-B stars by using the O I 6156–8 lines while taking into account the non-LTE effect, and compared them with the solar O abundance established in the same manner. The resulting mean o ...
1 Pau Amaro Seoane - modest 15-s
... We present an expression of the external gravitational field of a general ring-like object with the axial and plane symmetries such as annular disks or oval toroids with an arbitrary density distribution. The main term is that of an infinitely thin ring (Fukushima, 2010, Celest. Mech. Dyn. Astron., ...
... We present an expression of the external gravitational field of a general ring-like object with the axial and plane symmetries such as annular disks or oval toroids with an arbitrary density distribution. The main term is that of an infinitely thin ring (Fukushima, 2010, Celest. Mech. Dyn. Astron., ...
ASTRONOMY AND ASTROPHYSICS Barium abundances in cool
... between the unevolved stars and the corresponding part of the isochrones. That displacement consists of ; : for stars with for ; : < [Fe/H] < ; : . For [Fe/H] < ; : and ; : HD186408 we used the evolutionary tracks for solar metallicity given in Fuhrmann et al. (1997b). The error of the gravity depen ...
... between the unevolved stars and the corresponding part of the isochrones. That displacement consists of ; : for stars with for ; : < [Fe/H] < ; : . For [Fe/H] < ; : and ; : HD186408 we used the evolutionary tracks for solar metallicity given in Fuhrmann et al. (1997b). The error of the gravity depen ...
Improved stellar parameters of CoRoT-7
... continue to emerge. The CoRoT satellite recently discovered a transiting rocky planet with a density similar to the inner planets in our solar system, a so-called super Earth. The mass was determined using ground-based follow-up spectroscopy, which also revealed a second, non-transiting super Earth. ...
... continue to emerge. The CoRoT satellite recently discovered a transiting rocky planet with a density similar to the inner planets in our solar system, a so-called super Earth. The mass was determined using ground-based follow-up spectroscopy, which also revealed a second, non-transiting super Earth. ...
starry night companion
... inside the boundaries of a constellation is considered to be part of that constellation, regardless of its distance from Earth. A constellation is actually a wedge of the universe with Earth at its center that extends to the farthest reaches of space. The brighter stars in each constellation make a ...
... inside the boundaries of a constellation is considered to be part of that constellation, regardless of its distance from Earth. A constellation is actually a wedge of the universe with Earth at its center that extends to the farthest reaches of space. The brighter stars in each constellation make a ...
FIELD ASTRONOMY
... observations and to solve the PZS triangle, the surveyor must have one other factor. He must know the precise time of the observation so that he can fix the position of the terrestrial or horizon system of coordinates in relation to the celestial coordinate system. In the field of practical astrono ...
... observations and to solve the PZS triangle, the surveyor must have one other factor. He must know the precise time of the observation so that he can fix the position of the terrestrial or horizon system of coordinates in relation to the celestial coordinate system. In the field of practical astrono ...
targets - siamois
... < 7 for classical pulsators 2 or 3 dedicated small telescopes - next step simultaneous observations of 2 or 3 stars 2-m class telescope? -stellar magnitude < 8.5 for solar-like oscillations - increase of the number of reachable targets possibility to achieve specific observations in selected tar ...
... < 7 for classical pulsators 2 or 3 dedicated small telescopes - next step simultaneous observations of 2 or 3 stars 2-m class telescope? -stellar magnitude < 8.5 for solar-like oscillations - increase of the number of reachable targets possibility to achieve specific observations in selected tar ...
GRAVITY: Observing the Universe in Motion
... with the Very Large Telescope Interferometer (VLTI) substantially. An overview of the key experiments that will become possible with GRAVITY is illustrated on the Telescopes and Instrumentation section page (p. 6, lower panel). A unique combination with the VLTI The VLTI is the largest array of 8-me ...
... with the Very Large Telescope Interferometer (VLTI) substantially. An overview of the key experiments that will become possible with GRAVITY is illustrated on the Telescopes and Instrumentation section page (p. 6, lower panel). A unique combination with the VLTI The VLTI is the largest array of 8-me ...
Core instability models of giant planet accretion – II. Forming
... form several cores in the same disc. Initially we start the simulation with a number N planets,0 of cores through the disc, separated by 10 rH . This could have important consequences on the final distribution of masses and semimajor axis of extrasolar planets, especially for the changes in the dyna ...
... form several cores in the same disc. Initially we start the simulation with a number N planets,0 of cores through the disc, separated by 10 rH . This could have important consequences on the final distribution of masses and semimajor axis of extrasolar planets, especially for the changes in the dyna ...
Reference PDF document
... orbit, so that most of the time Mercury goes “above” or “below” the solar disk, without causing transits. Mercury tends to transit on average 13 times per century in intervals of 3, 7, 10 and 13 years. The last transit of Mercury occurred on November 8, 2006. ...
... orbit, so that most of the time Mercury goes “above” or “below” the solar disk, without causing transits. Mercury tends to transit on average 13 times per century in intervals of 3, 7, 10 and 13 years. The last transit of Mercury occurred on November 8, 2006. ...
It is now recognized that the vast majority of ellipticals are of
... • The dust lanes seen in E galaxies imply that the absorbing material is distributed in rings or disks. Dust lanes may be aligned with either the major or minor axes, or they may be warped. • E galaxies contain modest amounts of cool and warm gas, although not as much as is found in S galaxies. A fe ...
... • The dust lanes seen in E galaxies imply that the absorbing material is distributed in rings or disks. Dust lanes may be aligned with either the major or minor axes, or they may be warped. • E galaxies contain modest amounts of cool and warm gas, although not as much as is found in S galaxies. A fe ...
Chemical abundances and winds of massive stars in M31: a Btype
... following Fitzpatrick (1986) in using other B-type supergiants in the LMC as the comparison stars. We chose Sk-67 108 (B0 Ia) and Sk-69 276 (O9-B0Ia) as the comparison stars on the basis of the morphology of their UV spectra compared to OB 10-64. These two stars have essentially little or no interna ...
... following Fitzpatrick (1986) in using other B-type supergiants in the LMC as the comparison stars. We chose Sk-67 108 (B0 Ia) and Sk-69 276 (O9-B0Ia) as the comparison stars on the basis of the morphology of their UV spectra compared to OB 10-64. These two stars have essentially little or no interna ...
The accretion disk paradigm for young stars
... evolution emerged and in less than one generation, evolved into a full-fledged, highly successful research area that grew very quickly and branched into several more specialized subfields. This symposium, devoted to one of these subfields of active topical research, investigates the role of both a magn ...
... evolution emerged and in less than one generation, evolved into a full-fledged, highly successful research area that grew very quickly and branched into several more specialized subfields. This symposium, devoted to one of these subfields of active topical research, investigates the role of both a magn ...
The Celestial Sphere CHAPTER 1
... motion was a good approximation. Furthermore, since a geocentric model maintains circular motion, it was very difficult to make any observational distinction between geocentric and heliocentric universes. (Parallax effects are far too small to be noticeable with the naked eye.) ...
... motion was a good approximation. Furthermore, since a geocentric model maintains circular motion, it was very difficult to make any observational distinction between geocentric and heliocentric universes. (Parallax effects are far too small to be noticeable with the naked eye.) ...
Space, Earth and Celestial Objects Test Prep
... caused by an impact with another asteroid or by the gravitational pull of Jupiter or Mars. The closest known near-Earth collision was in 1994, when asteroid 1994 XL1 came within the Moon’s orbit at a distance of 100,000 kilometers from Earth. Earth had missed hitting this asteroid by a mere 52 minut ...
... caused by an impact with another asteroid or by the gravitational pull of Jupiter or Mars. The closest known near-Earth collision was in 1994, when asteroid 1994 XL1 came within the Moon’s orbit at a distance of 100,000 kilometers from Earth. Earth had missed hitting this asteroid by a mere 52 minut ...
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... from Ita et al. (1994). For stars classified as Miras we used Ita’s relation C including their separation for targets with J − K < 1.4 and J − K > 1.4. For semi-regular variables we used sequence B or C’. Naturally, this approach includes some uncertainties. In their Table 3, Ita et al. (1994) list ...
... from Ita et al. (1994). For stars classified as Miras we used Ita’s relation C including their separation for targets with J − K < 1.4 and J − K > 1.4. For semi-regular variables we used sequence B or C’. Naturally, this approach includes some uncertainties. In their Table 3, Ita et al. (1994) list ...
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.