WASP-86b and WASP-102b: super-dense versus bloated planets
... just to mention a few, are capable of detecting peculiar objects for example HATS-17 b, (Penev et al. 2016); HATS-18 b, (Brahm et al. 2016), increasing the spectrum of possible massradius relations in the planetary regime. These systems provide invaluable observational constraints on theoretical mod ...
... just to mention a few, are capable of detecting peculiar objects for example HATS-17 b, (Penev et al. 2016); HATS-18 b, (Brahm et al. 2016), increasing the spectrum of possible massradius relations in the planetary regime. These systems provide invaluable observational constraints on theoretical mod ...
www.astro.org.uk www.facebook.com/Stra ordAstro www.twi er.com
... into the cosmos. Up to now finding an accurate distance to the Large Magellanic Cloud (LMC), one of the nearest galaxies to the Milky Way, has proved elusive. As stars in this galaxy are used to fix the distance scale for more remote galaxies, it is crucially important. But careful observa:ons of a ra ...
... into the cosmos. Up to now finding an accurate distance to the Large Magellanic Cloud (LMC), one of the nearest galaxies to the Milky Way, has proved elusive. As stars in this galaxy are used to fix the distance scale for more remote galaxies, it is crucially important. But careful observa:ons of a ra ...
SS_L1
... gravity of a star of mass M tff ~ (2/3 G)-1/2 ~ 2.2 103 (R3/M)1/2 s where R and M are in solar units. ...
... gravity of a star of mass M tff ~ (2/3 G)-1/2 ~ 2.2 103 (R3/M)1/2 s where R and M are in solar units. ...
The white dwarf cooling sequence of 47 Tucanae
... Synthetic main-sequence stars are randomly drawn according to the initial mass function of Kroupa et al. (1993). The selected range of masses is that necessary to produce the white dwarf progenitors of 47 Tuc. In particular, a lower limit of M > 0.5 M guarantees that enough white dwarfs are produce ...
... Synthetic main-sequence stars are randomly drawn according to the initial mass function of Kroupa et al. (1993). The selected range of masses is that necessary to produce the white dwarf progenitors of 47 Tuc. In particular, a lower limit of M > 0.5 M guarantees that enough white dwarfs are produce ...
The Spectra ot Novae
... of absorption systems in the early post-maximum stages. A secondary minimum in the very early decline may be accompanied by strong emergence of the diffuse enhanced spectrum which will weaken again as the star recovers. Farther down the decline, a fading of the star may be correlated with weakening ...
... of absorption systems in the early post-maximum stages. A secondary minimum in the very early decline may be accompanied by strong emergence of the diffuse enhanced spectrum which will weaken again as the star recovers. Farther down the decline, a fading of the star may be correlated with weakening ...
P7 Further Physics : Observing the Universe
... The topics The Textbook presents the content of the specification in four topics: • Observatories and telescopes highlights the use of the full electromagnetic spectrum to understand the cosmic landscape, and then describes refractors and reflectors and how they work. • Mapping the heavens discusses ...
... The topics The Textbook presents the content of the specification in four topics: • Observatories and telescopes highlights the use of the full electromagnetic spectrum to understand the cosmic landscape, and then describes refractors and reflectors and how they work. • Mapping the heavens discusses ...
Galaxy Classification Much of modern extragalactic astronomy deals
... In this method, supergiant galaxies with well-developed bright spiral arms and bars have the Roman numeral I (like supergiant stars), and small, low-surface-brightness, irregular galaxies have the roman numeral V. Of course, since one doesn’t usually know a galaxy’s distance, it is somewhat difficul ...
... In this method, supergiant galaxies with well-developed bright spiral arms and bars have the Roman numeral I (like supergiant stars), and small, low-surface-brightness, irregular galaxies have the roman numeral V. Of course, since one doesn’t usually know a galaxy’s distance, it is somewhat difficul ...
m - viXra
... mechanical, electromagnetic, etc. For example, we can look on the momentum variation Δp as due to absorption or emission of electromagnetic energy. In this case, it was shown previously that the expression of χ , in the particular case of incident radiation on a heterogeneous matter(powder, dust, cl ...
... mechanical, electromagnetic, etc. For example, we can look on the momentum variation Δp as due to absorption or emission of electromagnetic energy. In this case, it was shown previously that the expression of χ , in the particular case of incident radiation on a heterogeneous matter(powder, dust, cl ...
neutron star
... galaxies are richer in heavy elements than the Sun, with the highest abundances ever seen in the early Universe. Heavy elements that enrich mature galaxies in the local Universe were made in past generations of stars. So these young galaxies have experienced a prodigious rate of star formation and c ...
... galaxies are richer in heavy elements than the Sun, with the highest abundances ever seen in the early Universe. Heavy elements that enrich mature galaxies in the local Universe were made in past generations of stars. So these young galaxies have experienced a prodigious rate of star formation and c ...
implication on the mass and
... The solid line evolves as (1+z)3.9 and represents the best fit of the total IR luminosity density at 0
... The solid line evolves as (1+z)3.9 and represents the best fit of the total IR luminosity density at 0
OSP2016Level 3 Map - Oregon Star Party
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
... What is it? V404 Cyg is a black hole (12+/- 3 solar masses) with late K or early G type stellar companion that’s slightly smaller than the Sun, orbiting each other in less than 6.5 days. They are approximately 7800 light years away. Why you want to see it: The stellar companion is distorted into a ...
3.1 Radio Astronomy Research Results For much of PY 2010, radio
... An AGES objective is to investigate the number of low mass gas rich dwarf galaxies that reside around isolated galaxies and within galaxy groups, as hierarchical models of galaxy formation predict hundreds of dwarf companions for each giant galaxy. AGES typically finds only one or two new dwarf gala ...
... An AGES objective is to investigate the number of low mass gas rich dwarf galaxies that reside around isolated galaxies and within galaxy groups, as hierarchical models of galaxy formation predict hundreds of dwarf companions for each giant galaxy. AGES typically finds only one or two new dwarf gala ...
On the asymmetry of the distribution of observable comets induced
... Using the original Monte Carlo simulation code we calculated the effects of stellar passages for wide ranges of the parameters. The perturber mass varied from 0.5 up to 5 solar masses, the minimum heliocentric distance from 10 000 to 100 000 AU and the stellar perturber velocity from 5 km s−1 to 50 ...
... Using the original Monte Carlo simulation code we calculated the effects of stellar passages for wide ranges of the parameters. The perturber mass varied from 0.5 up to 5 solar masses, the minimum heliocentric distance from 10 000 to 100 000 AU and the stellar perturber velocity from 5 km s−1 to 50 ...
The Eight Parts of Speech:
... Latin stems alter (other) and ism (doctrine). Altruism is the opposite of selfishness and egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to ...
... Latin stems alter (other) and ism (doctrine). Altruism is the opposite of selfishness and egocentrism; it is the ability to do things that are selfless, out of a genuine concern for others or for the common good. In James Joyce’s A Portrait of the Artist as a Young Man, we read that “you have yet to ...
Data Reduction pipeline for MOST Guide Stars and Application to
... Setting Δ = 1 provides the frequency to be in units of orbital frequency. Thus, peaks reaching zero or values close to zero in the Figures refer to the vicinity of the orbital frequency of the spacecraft (and harmonics) and illustrate the efficiency of the filter. On the other hand, there are also peri ...
... Setting Δ = 1 provides the frequency to be in units of orbital frequency. Thus, peaks reaching zero or values close to zero in the Figures refer to the vicinity of the orbital frequency of the spacecraft (and harmonics) and illustrate the efficiency of the filter. On the other hand, there are also peri ...
Chandra - Cosmos
... Initial spectral fitting suggests high O/Fe, Ne/Fe, and Mg/Fe ratios, comparable to the known O-rich SMC SNR 1E 0102-7219 ...
... Initial spectral fitting suggests high O/Fe, Ne/Fe, and Mg/Fe ratios, comparable to the known O-rich SMC SNR 1E 0102-7219 ...
Document
... abundance in the star and thus the proto-planetary disk. A higher metal content implies that the planets are easier to form (core accretion theory) → the high metal abundance forms more planets Scenario 2: The high metal content is only on the surface layers of the star and result from the accretion ...
... abundance in the star and thus the proto-planetary disk. A higher metal content implies that the planets are easier to form (core accretion theory) → the high metal abundance forms more planets Scenario 2: The high metal content is only on the surface layers of the star and result from the accretion ...
Closed Loop Performance
... At 1000 Hz closed loop we can achieve 65 nm rms error in tower ~95nm “on-sky”. NOTE that this is a linear stretch. This is much better than the 190 nm rms ...
... At 1000 Hz closed loop we can achieve 65 nm rms error in tower ~95nm “on-sky”. NOTE that this is a linear stretch. This is much better than the 190 nm rms ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.