Invited speakers
... method, no extrasolar planet has yet been seen directly by its emitted or reflected light. Detections by spectroscopic techniques have so far been unsuccessful while photometric detection requires accuracies which are beyond current ground-based photometry. However, we believe that planets orbiting ...
... method, no extrasolar planet has yet been seen directly by its emitted or reflected light. Detections by spectroscopic techniques have so far been unsuccessful while photometric detection requires accuracies which are beyond current ground-based photometry. However, we believe that planets orbiting ...
The science case for - Astrophysics
... photons which re-ionised the Universe some 200million years after the Big Bang, and made it transparent? These objects may be visible through their supernovae, or their ionisation zones. How many types of matter exist? What is dark matter? Where is it? Most matter is transparent, and is detectable o ...
... photons which re-ionised the Universe some 200million years after the Big Bang, and made it transparent? These objects may be visible through their supernovae, or their ionisation zones. How many types of matter exist? What is dark matter? Where is it? Most matter is transparent, and is detectable o ...
Mass Estimate of Black Hole Candidates GRS 1758
... Santa Cruz Institute for Particle Physics Seminar May 23, 2006 ...
... Santa Cruz Institute for Particle Physics Seminar May 23, 2006 ...
A New Science Strategy for Space Astronomy and Astrophysics
... this field, the report identified in priority order the most important scientific programs and projects for both groundand space-based research. It recommended a single large initiative for space, the Space Infrared Telescope Facility, which now appears to be getting under way, albeit on a smaller s ...
... this field, the report identified in priority order the most important scientific programs and projects for both groundand space-based research. It recommended a single large initiative for space, the Space Infrared Telescope Facility, which now appears to be getting under way, albeit on a smaller s ...
Bill Gray 168 Ridge Road Bowdoinham, ME 04008 ph (207) 666
... where the software breaks down. So far, it doesn't. As long as the image contains at least three or four GSC stars (three usually works, four always does), the software always finds a match, and is then able to improve it by doing a least-squares fit to all GSC stars in the area. It generally does t ...
... where the software breaks down. So far, it doesn't. As long as the image contains at least three or four GSC stars (three usually works, four always does), the software always finds a match, and is then able to improve it by doing a least-squares fit to all GSC stars in the area. It generally does t ...
Element Segregation in Low Metallicity Stars and the Primordial
... concentration gradients, the electric field and the radiative acceleration. A self-gravitating gas-mixture cannot be in complete equilibrium and remain chemically homogeneous. During ...
... concentration gradients, the electric field and the radiative acceleration. A self-gravitating gas-mixture cannot be in complete equilibrium and remain chemically homogeneous. During ...
Properties of simulated galaxies at z~4-7
... Extension to lower redshift to test further the interplay between galactic winds & AGN feedback. LAEs at z ~ 3: ANGUS + CRASHα, in collaboration with Akila Jeeson-Daniel (UoM). ...
... Extension to lower redshift to test further the interplay between galactic winds & AGN feedback. LAEs at z ~ 3: ANGUS + CRASHα, in collaboration with Akila Jeeson-Daniel (UoM). ...
Feedback in low-mass galaxies in the early Universe
... that fast outflows in some massive galaxies may be powered by starbursts rather than by active galactic nuclei38,39. At lower masses, the decreasing efficiency of star formation is likely to be due to processes associated with the formation and evolution of massive stars. Galactic winds are driven b ...
... that fast outflows in some massive galaxies may be powered by starbursts rather than by active galactic nuclei38,39. At lower masses, the decreasing efficiency of star formation is likely to be due to processes associated with the formation and evolution of massive stars. Galactic winds are driven b ...
Astronomy Astrophysics − Astrophysical parameters of the peculiar X-ray transient
... Galactocentric distance of 7.9 kpc, 3.2 kpc away from the Sun). From then on, radial velocities increase with distance, becoming positive at a distance of 6.5 kpc from the Sun. The line of sight in the direction to HD 306414 passes first through the Southern Coalsack (distance about 170 pc), one of ...
... Galactocentric distance of 7.9 kpc, 3.2 kpc away from the Sun). From then on, radial velocities increase with distance, becoming positive at a distance of 6.5 kpc from the Sun. The line of sight in the direction to HD 306414 passes first through the Southern Coalsack (distance about 170 pc), one of ...
Evidence for an oscillation of the magnetic axis of the white dwarf in
... Figure 1 shows examples of the total of 45 white-light orbital light curves of DP Leo taken in five observing seasons between March 2009 to March 20132. All light curves are phased relative to the simultaneously observed eclipses of the white dwarf by the secondary star (Beuermann et al. 2011). The ...
... Figure 1 shows examples of the total of 45 white-light orbital light curves of DP Leo taken in five observing seasons between March 2009 to March 20132. All light curves are phased relative to the simultaneously observed eclipses of the white dwarf by the secondary star (Beuermann et al. 2011). The ...
N-Body/SPH simulations of induced star formation in dwarf galaxies
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
... increased and will attract other clumps. These clumps will start moving, attracting one another, and merge. When the formed structures of dark matter and baryons contain a sufficient amount of baryonic gas, they can start forming stars and dwarf galaxies are born. Large galaxies as for instance our ...
Atoms and Stars IST 3360 and IST 1990
... o Celestial physics: heavens are perfect • Smooth, spherical, flawless • Natural state: moving in a circle with constant speed • Earth at center (geocentric) ...
... o Celestial physics: heavens are perfect • Smooth, spherical, flawless • Natural state: moving in a circle with constant speed • Earth at center (geocentric) ...
Hot subdwarf stars-galactic orbits and distribution perpendicular to
... Hot subdwarfs are blue, horizontal-branch like stars, representing the late stages of evolution of stars having started with less than about 2.5 M⊙ on the main sequence. The hotter subdwarf B (sdB) stars form a well defined group. Their luminosity is of the order of 10 L⊙ and their surface temperatu ...
... Hot subdwarfs are blue, horizontal-branch like stars, representing the late stages of evolution of stars having started with less than about 2.5 M⊙ on the main sequence. The hotter subdwarf B (sdB) stars form a well defined group. Their luminosity is of the order of 10 L⊙ and their surface temperatu ...
Magnitude Scales and Photometric Systems
... unfortunately, the atmospheric H2 O absorption bands) to define what he called the J, K, L, M and N bands. Ian S Glass, in his early observations with an InSb detector, used the additional band H (∼1.63 µm), between I and K, and in his choice of filters attempted to match the other Johnson bands. Al ...
... unfortunately, the atmospheric H2 O absorption bands) to define what he called the J, K, L, M and N bands. Ian S Glass, in his early observations with an InSb detector, used the additional band H (∼1.63 µm), between I and K, and in his choice of filters attempted to match the other Johnson bands. Al ...
Chapter 22 PowerPoint
... These X-ray bursts are thought to originate on neutron stars that have binary partners. The process is similar to a nova, but much more energy is emitted due to the extremely strong gravitational field of the neutron star. ...
... These X-ray bursts are thought to originate on neutron stars that have binary partners. The process is similar to a nova, but much more energy is emitted due to the extremely strong gravitational field of the neutron star. ...
The observed distribution of spectroscopic binaries from the Anglo
... to the n observations of line-of sight RV, ż, at true anomalies υ (derived from the observed times, t, through iteration of Kepler’s equation). A least-squares minimization procedure, invoking several IDL routines, is used to fit the equation. In the search for an orbital solution, periods are init ...
... to the n observations of line-of sight RV, ż, at true anomalies υ (derived from the observed times, t, through iteration of Kepler’s equation). A least-squares minimization procedure, invoking several IDL routines, is used to fit the equation. In the search for an orbital solution, periods are init ...
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.