The Gould Belt
... is mostly interpreted as a common expansion of the stellar system [8,9] and only a small fraction of it (≈1.5 km/s) can be explained as a red shift of spectrum lines owing to the gravitation of massive stars in accordance with the theory of relativity. Second, it was shown that the residual velociti ...
... is mostly interpreted as a common expansion of the stellar system [8,9] and only a small fraction of it (≈1.5 km/s) can be explained as a red shift of spectrum lines owing to the gravitation of massive stars in accordance with the theory of relativity. Second, it was shown that the residual velociti ...
STELLAR AGE VERSUS MASS OF EARLY
... performed visually by allowing age steps of 0.05 dex. The age range was then kept fixed for the other colors (middle and bottom panel). We see from the top panel of Fig. 2 that the SSP of HPL07 exceeds the observed color range at intermediate ages. This is no surprise, though: since the reddest colo ...
... performed visually by allowing age steps of 0.05 dex. The age range was then kept fixed for the other colors (middle and bottom panel). We see from the top panel of Fig. 2 that the SSP of HPL07 exceeds the observed color range at intermediate ages. This is no surprise, though: since the reddest colo ...
Homologous Stars: Simple Scaling Relations
... possible to show that all polytropes with n > 5 have infinite radii. This means that only solutions with n < 5 have a surface. The two cases most interesting for real stars have n = 1.5 and n = 3, and unfortunately these do not have analytic solutions. A solution of eq. (poly.6) depends on one param ...
... possible to show that all polytropes with n > 5 have infinite radii. This means that only solutions with n < 5 have a surface. The two cases most interesting for real stars have n = 1.5 and n = 3, and unfortunately these do not have analytic solutions. A solution of eq. (poly.6) depends on one param ...
December 2011
... be a meteor shower known as the Geminid shower. The best time to watch for the meteors will be in the evening of 13 th and the morning of 14th December when the shower should be at its peak. However some should be visible all night. Unfortunately the Moon will be a waning gibbous crescent just 20° s ...
... be a meteor shower known as the Geminid shower. The best time to watch for the meteors will be in the evening of 13 th and the morning of 14th December when the shower should be at its peak. However some should be visible all night. Unfortunately the Moon will be a waning gibbous crescent just 20° s ...
Galaxy Evolution Encyclopedia of Astronomy & Astrophysics eaa.iop.org Mauro Giavalisco
... negligible. After the first million years of continuously forming stars at a rate of 10 M per year, the galaxy of our example has put together a total stellar mass equal to 10 × 1000 000 = 107 M , about one ten-thousandth of its initial stellar mass. Of these, about 20 000 are massive stars. Becau ...
... negligible. After the first million years of continuously forming stars at a rate of 10 M per year, the galaxy of our example has put together a total stellar mass equal to 10 × 1000 000 = 107 M , about one ten-thousandth of its initial stellar mass. Of these, about 20 000 are massive stars. Becau ...
Downloaded - Royal Society Open Science
... I begin by providing a visual table of contents in figure 1, which includes handy references for the abbreviations and commonly used variables in this article. I use the abbreviation ‘SB’ (‘substellar body’ or ‘smaller body’) extensively in the text and equations; constraining relations to just one ...
... I begin by providing a visual table of contents in figure 1, which includes handy references for the abbreviations and commonly used variables in this article. I use the abbreviation ‘SB’ (‘substellar body’ or ‘smaller body’) extensively in the text and equations; constraining relations to just one ...
Galaxy Evolution
... negligible. After the first million years of continuously forming stars at a rate of 10 M per year, the galaxy of our example has put together a total stellar mass equal to 10 × 1000 000 = 107 M , about one ten-thousandth of its initial stellar mass. Of these, about 20 000 are massive stars. Becau ...
... negligible. After the first million years of continuously forming stars at a rate of 10 M per year, the galaxy of our example has put together a total stellar mass equal to 10 × 1000 000 = 107 M , about one ten-thousandth of its initial stellar mass. Of these, about 20 000 are massive stars. Becau ...
But Still, It Moves: Tides, Stellar Parallax, and Galileo`s
... occur, and that the time of day at which tides occur varies slowly over the course of a year as the Earth revolves around the Sun instead of over the course of a month as the Moon revolves around the Earth. Neither Johannes Kepler (1571-1630) nor René Descartes (1596-1650), two other prominent Coper ...
... occur, and that the time of day at which tides occur varies slowly over the course of a year as the Earth revolves around the Sun instead of over the course of a month as the Moon revolves around the Earth. Neither Johannes Kepler (1571-1630) nor René Descartes (1596-1650), two other prominent Coper ...
Lecture 3 - University of Washington
... Despite 50 years of work, spirals are not very well understood. It seems clear now that the spiral structure of galaxies is a complex problem without any unique and tidy answer. Differential rotation clearly plays a central role, as well as global instabilities, stochastic spirals, and the shocks pa ...
... Despite 50 years of work, spirals are not very well understood. It seems clear now that the spiral structure of galaxies is a complex problem without any unique and tidy answer. Differential rotation clearly plays a central role, as well as global instabilities, stochastic spirals, and the shocks pa ...
Kepler Mission
... detecting other planets. Tests carried out with these photodiodes informed scientists that they had very high precision. However, they still needed to be cooled to near liquid nitrogen temperatures in order to minimize thermal noise. They linked one cooled photometer with the cooled diodes and left ...
... detecting other planets. Tests carried out with these photodiodes informed scientists that they had very high precision. However, they still needed to be cooled to near liquid nitrogen temperatures in order to minimize thermal noise. They linked one cooled photometer with the cooled diodes and left ...
Program and Abstract Book - European Southern Observatory
... Mike Dunham (SUNY Fredonia, NY, USA) Stars form from the gravitational collapse of dense molecular cloud cores. In the protostellar phase, mass both accretes from the core onto a protostar, likely through an accretion disk, and is ejected in the form of jets and outflows. It is during this protostel ...
... Mike Dunham (SUNY Fredonia, NY, USA) Stars form from the gravitational collapse of dense molecular cloud cores. In the protostellar phase, mass both accretes from the core onto a protostar, likely through an accretion disk, and is ejected in the form of jets and outflows. It is during this protostel ...
1 The Hubble Story (10:56)
... Hubble has also measured the mass of a planet – only the second time such a calculation has been performed with any accuracy – by detecting the way in which the planet causes its star to wobble. Hubble also found the oldest planet so far discovered. The planet orbits a tiny stellar husk, which was o ...
... Hubble has also measured the mass of a planet – only the second time such a calculation has been performed with any accuracy – by detecting the way in which the planet causes its star to wobble. Hubble also found the oldest planet so far discovered. The planet orbits a tiny stellar husk, which was o ...
Photometry`s bright future: Detecting Solar System analogues with
... tions are radial-velocity measurements (Haywood et al. 2014), different wavelengths (Evans et al. 2015), or instrumental systematics such as the drift in the roll-angle of Kepler’s K2 mission (Aigrain et al. 2015; ForemanMackey et al. 2015). When the noise timescale gets closer to the transit durati ...
... tions are radial-velocity measurements (Haywood et al. 2014), different wavelengths (Evans et al. 2015), or instrumental systematics such as the drift in the roll-angle of Kepler’s K2 mission (Aigrain et al. 2015; ForemanMackey et al. 2015). When the noise timescale gets closer to the transit durati ...
Cosmos
... the historical significance of the mission utterly apparent. And yet the general public was learning almost nothing of these great happenings. The press was largely inattentive; television ignored the mission almost altogether. When it became clear that a definitive answer on whether there is life o ...
... the historical significance of the mission utterly apparent. And yet the general public was learning almost nothing of these great happenings. The press was largely inattentive; television ignored the mission almost altogether. When it became clear that a definitive answer on whether there is life o ...
Beyond simple depletion: phase behaviour of colloid–star polymer
... In this paper, we report experiments that go systematically beyond the idealized model: the nearly ideal linear polymer is replaced by star-branched polymers of increasing functionality (number of arms). To simplify the terminology, we will refer to the model system and the more complex systems just ...
... In this paper, we report experiments that go systematically beyond the idealized model: the nearly ideal linear polymer is replaced by star-branched polymers of increasing functionality (number of arms). To simplify the terminology, we will refer to the model system and the more complex systems just ...
Astronomy 150 The Planets
... ages you can determine. Feel free to pick and label a region with many more features, but not so many that it would take you a week to draw the map. The pictures on the following page give you some idea as to what we want to do. On the left is an image taken from the command module of Apollo 15. The ...
... ages you can determine. Feel free to pick and label a region with many more features, but not so many that it would take you a week to draw the map. The pictures on the following page give you some idea as to what we want to do. On the left is an image taken from the command module of Apollo 15. The ...
HWWS 2010 - Monash University
... long pulse periods ~4-6s • Latter two are both likely classes of magnetars, (possibly young) systems with extremely high magnetic fields 1014– 1015 G • Compact central objects (CCOs) about which very little is known, associated with supernova remnants Galloway, “Accreting Neutron Stars – tiny Galact ...
... long pulse periods ~4-6s • Latter two are both likely classes of magnetars, (possibly young) systems with extremely high magnetic fields 1014– 1015 G • Compact central objects (CCOs) about which very little is known, associated with supernova remnants Galloway, “Accreting Neutron Stars – tiny Galact ...
azu_etd_13224_sip1_m
... I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... I NTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Untitled - NMSU Astronomy
... from the Earth to the Moon is 384,000,000 meters or 384,000 kilometers (km). The distances found in astronomy are usually so large that we have to switch to a unit of measurement that is much larger than the meter, or even the kilometer. In and around the solar system, astronomers use “Astronomical ...
... from the Earth to the Moon is 384,000,000 meters or 384,000 kilometers (km). The distances found in astronomy are usually so large that we have to switch to a unit of measurement that is much larger than the meter, or even the kilometer. In and around the solar system, astronomers use “Astronomical ...
... Teff and log(g) are discussed: Fourier light curve decomposition, the Preston ∆S index and the theoretical grids on the (b − y)o − c1o plane. Key Words: stars: variables: RR Lyrae — techniques: photometry 1. INTRODUCTION RR Lyrae stars (RRL) are radial pulsators that can be active in the fundamental ...
![arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015](http://s1.studyres.com/store/data/017598977_1-7182fa8223b5ceaded332d6412cd3a07-300x300.png)
arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015
... required to characterize the interior of exoplanets. Conclusions. Our main conclusions are: (1) observations of mass and radius are sufficient to constrain core size; (2) stellar elemental abundances (Fe, Si, Mg) are key constraints to reduce degeneracy in interior structure models and to constrain ...
... required to characterize the interior of exoplanets. Conclusions. Our main conclusions are: (1) observations of mass and radius are sufficient to constrain core size; (2) stellar elemental abundances (Fe, Si, Mg) are key constraints to reduce degeneracy in interior structure models and to constrain ...
Metal-poor Stars
... The first stars that formed from the pristine gas left after the Big Bang were very massive (Bromm et al. 2002). After a very short life time these co-called Population III stars exploded as supernovae, which then provided the first metals to the interstellar medium. All subsequent generations of st ...
... The first stars that formed from the pristine gas left after the Big Bang were very massive (Bromm et al. 2002). After a very short life time these co-called Population III stars exploded as supernovae, which then provided the first metals to the interstellar medium. All subsequent generations of st ...
Properties of White Dwarfs, Teacher Guide
... that to our Sun at 5,770 Kelvin, and you understand why these objects when first discovered were called “white”. They are very hot. But what about “dwarf”? Based on Bessel’s calculations for Sirius’s companion, astronomers were able to find Sirius B and measure its apparent brightness (magnitude), w ...
... that to our Sun at 5,770 Kelvin, and you understand why these objects when first discovered were called “white”. They are very hot. But what about “dwarf”? Based on Bessel’s calculations for Sirius’s companion, astronomers were able to find Sirius B and measure its apparent brightness (magnitude), w ...
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.