FIVE NEW TRANSITS OF THE SUPER
... Compared to Saturn, HD 149026b has a similar mass but its radius is 15% smaller, despite the intense irradiation from its parent star that should enlarge the radius. Sato et al. (2005) modeled HD 149026b as a dense heavy-element core surrounded by a fluid envelope of solar composition. They found a ...
... Compared to Saturn, HD 149026b has a similar mass but its radius is 15% smaller, despite the intense irradiation from its parent star that should enlarge the radius. Sato et al. (2005) modeled HD 149026b as a dense heavy-element core surrounded by a fluid envelope of solar composition. They found a ...
Dynamics of galaxies and clusters in refracted gravity
... in standard gravity, the velocity dispersion of galaxies in clusters, the temperature of the intracluster gas, and gravitational lensing effects, all suggest that the gravitating mass of clusters is five to ten times larger than the mass that emits the electromagnetic radiation. The most widely acce ...
... in standard gravity, the velocity dispersion of galaxies in clusters, the temperature of the intracluster gas, and gravitational lensing effects, all suggest that the gravitating mass of clusters is five to ten times larger than the mass that emits the electromagnetic radiation. The most widely acce ...
Reid_may
... No obvious correlations between space motions and planetary characteristics (cf. Santos et al, 2003). ...
... No obvious correlations between space motions and planetary characteristics (cf. Santos et al, 2003). ...
X. Nuclear star clusters in low-mass early-type galaxies
... At faint magnitudes, the dominant noise is a combination of the readnoise and the sky background noise with a small contribution of Poisson noise from the host galaxy (see also Section 4.3 and Fig. 6). For a host galaxy absolute magnitude MF814W = −13 mag, the difference between the host galaxy magn ...
... At faint magnitudes, the dominant noise is a combination of the readnoise and the sky background noise with a small contribution of Poisson noise from the host galaxy (see also Section 4.3 and Fig. 6). For a host galaxy absolute magnitude MF814W = −13 mag, the difference between the host galaxy magn ...
Astronomy Astrophysics - Utrecht University Repository
... flux, we need to determine (1) the minimum light of each program star, supposedly corresponding to the photospheric emission, and (2) the optical brightness of each object at the epoch of the 2MASS near-IR observation. The type and time scale of the displayed variability requires the longest period ...
... flux, we need to determine (1) the minimum light of each program star, supposedly corresponding to the photospheric emission, and (2) the optical brightness of each object at the epoch of the 2MASS near-IR observation. The type and time scale of the displayed variability requires the longest period ...
DEDUCING THE LIFETIME OF SHORT GAMMA
... host galaxies of short GRBs found so far are associated with old and massive galaxies with little current or recent star formation, which makes it unlikely that short bursts are associated with massive stars. Presently available data suggests, but not yet prove, a long time delay between the formati ...
... host galaxies of short GRBs found so far are associated with old and massive galaxies with little current or recent star formation, which makes it unlikely that short bursts are associated with massive stars. Presently available data suggests, but not yet prove, a long time delay between the formati ...
The mass of the Milky Way: Limits from a newly assembled set of
... satellite galaxies, all of the basic information for our kinematic analysis, i.e., positions, heliocentric distances, and heliocentric radial velocities, are taken from the compilation of Mateo (1998). For the globular clusters, we adopt the information provided by Harris (1996), including their pos ...
... satellite galaxies, all of the basic information for our kinematic analysis, i.e., positions, heliocentric distances, and heliocentric radial velocities, are taken from the compilation of Mateo (1998). For the globular clusters, we adopt the information provided by Harris (1996), including their pos ...
Where stars are born: Javier Blasco-Herrera
... The evolution of galaxies in the past has been dominated by interactions, mergers, episodes of strong star formation followed by long quiescent periods... Currently, we are in the process of changing from that epoch of fast evolution into an epoch where internal, slow processes dominate (Kormendy & ...
... The evolution of galaxies in the past has been dominated by interactions, mergers, episodes of strong star formation followed by long quiescent periods... Currently, we are in the process of changing from that epoch of fast evolution into an epoch where internal, slow processes dominate (Kormendy & ...
adc - VizieR
... the magnitudes have been determined by ordinary photographic or visual means. Photoelectric magnitudes are reported to hundredths. In some cases, the maximum magnitude is given to tenths and the minimum reported to hundredths. This means that the light amplitude was accurately determined photoelectr ...
... the magnitudes have been determined by ordinary photographic or visual means. Photoelectric magnitudes are reported to hundredths. In some cases, the maximum magnitude is given to tenths and the minimum reported to hundredths. This means that the light amplitude was accurately determined photoelectr ...
View - ESA
... radial velocities. We compiled a database (see Table 1) that we used for all later computations. Missing data (always radial velocities and/or mass determinations) in Table 1 are replaced by large numbers (999) for computational reasons, flagged in red and excluded from subsequent reductions. Errors ...
... radial velocities. We compiled a database (see Table 1) that we used for all later computations. Missing data (always radial velocities and/or mass determinations) in Table 1 are replaced by large numbers (999) for computational reasons, flagged in red and excluded from subsequent reductions. Errors ...
Stars, Galaxies, Superuniverses and the Urantia Book, by Frederick
... number since our galaxy is the second largest in our local cluster of about 30 galaxies, and thus may be considered to be an exceptionally large galaxy. There are many more small galaxies of the elliptical or globular types than there are of the spiral type such as our Milky Way. The information on ...
... number since our galaxy is the second largest in our local cluster of about 30 galaxies, and thus may be considered to be an exceptionally large galaxy. There are many more small galaxies of the elliptical or globular types than there are of the spiral type such as our Milky Way. The information on ...
Bob Mathieu (Wisconsin) – Observations of Open Clusters
... • Photometric mass function to 0.1 Mo in cluster core • Complete census of short-period, solar-type binary population, with orbital elements ...
... • Photometric mass function to 0.1 Mo in cluster core • Complete census of short-period, solar-type binary population, with orbital elements ...
The origin of magnetism on the upper main sequence
... spectropolarimetric measurements of magnetic fields in early B- and O-type stars and found longitudinal fields with strengths in the range 100 < B/G < 300 in about 30 per cent of their sample. They also conclude that large-scale dipolar fields of strengths B 1000 G, like those found in the Orion o ...
... spectropolarimetric measurements of magnetic fields in early B- and O-type stars and found longitudinal fields with strengths in the range 100 < B/G < 300 in about 30 per cent of their sample. They also conclude that large-scale dipolar fields of strengths B 1000 G, like those found in the Orion o ...
Galaxies at High Redshift Encyclopedia of Astronomy & Astrophysics eaa.iop.org Mauro Giavalisco
... also means a younger universe. Recent measurements of the Hubble constant place its value in the range between 60 and 70 km s−1 Mpc−1 (1 Mpc = 3.1 × 1022 m). This corresponds to an age of the universe between 10 and 15 Gyr (1 Gyr = 109 yr). Aresult of the cosmic expansion and of the finite speed of ...
... also means a younger universe. Recent measurements of the Hubble constant place its value in the range between 60 and 70 km s−1 Mpc−1 (1 Mpc = 3.1 × 1022 m). This corresponds to an age of the universe between 10 and 15 Gyr (1 Gyr = 109 yr). Aresult of the cosmic expansion and of the finite speed of ...
Red Giant Branch
... The classical methodology (Reimers law + HB morphology in GGCs) is currently debated due to Alternative, more physically sound, mass-loss prescriptions new scenario of GGCs: multiple stellar populations and He content new observational/theoretical techniques (asteroseismology, pulsation mode ...
... The classical methodology (Reimers law + HB morphology in GGCs) is currently debated due to Alternative, more physically sound, mass-loss prescriptions new scenario of GGCs: multiple stellar populations and He content new observational/theoretical techniques (asteroseismology, pulsation mode ...
12.1 Elliptical galaxies
... galaxy, and major and minor axes are drawn. You can see as you go to ever larger radii, the axes seemed to rotate. [slide 8] So, this is still elliptical shapes. But, actually, ellipticals are not purely elliptical in shape. Pretty close, but not always exactly. And, the first deviation that you ...
... galaxy, and major and minor axes are drawn. You can see as you go to ever larger radii, the axes seemed to rotate. [slide 8] So, this is still elliptical shapes. But, actually, ellipticals are not purely elliptical in shape. Pretty close, but not always exactly. And, the first deviation that you ...
Late Summer Messier Objects
... the most unusual objects in the Messier list. Indeed, this is technically not an object at all. Messier called it a star cluster, but that implies a collection of stars which are physically related and bound to each other by gravity, which is not true for M24. Instead, M24 is a star cloud, a rich po ...
... the most unusual objects in the Messier list. Indeed, this is technically not an object at all. Messier called it a star cluster, but that implies a collection of stars which are physically related and bound to each other by gravity, which is not true for M24. Instead, M24 is a star cloud, a rich po ...
Comparing molecular gas across cosmic time
... sity, and hence objects situated above the relation are either supervirial, or have a gravitational potential that is not gas-dominated. The main sub-samples that deviate from the relation are the nearby spiral galaxies, the CMZ regions, and the high-z galaxies. For the spiral galaxies, this is easi ...
... sity, and hence objects situated above the relation are either supervirial, or have a gravitational potential that is not gas-dominated. The main sub-samples that deviate from the relation are the nearby spiral galaxies, the CMZ regions, and the high-z galaxies. For the spiral galaxies, this is easi ...
PDF only - at www.arxiv.org.
... The aim of this work are to find a Kepler’s constant by using polynomial regression of the angular separation = (t) and the position angle = (t). The Kepler’s constant obtained is used to derive the elements of orbit. As a case study the angular separation and the position angle of the WDS 000 ...
... The aim of this work are to find a Kepler’s constant by using polynomial regression of the angular separation = (t) and the position angle = (t). The Kepler’s constant obtained is used to derive the elements of orbit. As a case study the angular separation and the position angle of the WDS 000 ...
Document
... Binaries provide an explanation for Type Ia supernovae. These are thought to be a consequence of accretion onto a white dwarf. Binaries explain why the progenitor of SN1987A was a blue supergiant: its outer envelope was lost to a companion. Binaries may have members which are black holes and/or neut ...
... Binaries provide an explanation for Type Ia supernovae. These are thought to be a consequence of accretion onto a white dwarf. Binaries explain why the progenitor of SN1987A was a blue supergiant: its outer envelope was lost to a companion. Binaries may have members which are black holes and/or neut ...
The Distribution, Classification, and Color Evolution of Galaxies
... color as a whole. It is therefore hypothesized that younger and older galaxies would have different positions on the color plot. Next, since there are more younger galaxies in the younger universe, or the farther observable universe, than in the older, or nearer universe, it is expected that the lum ...
... color as a whole. It is therefore hypothesized that younger and older galaxies would have different positions on the color plot. Next, since there are more younger galaxies in the younger universe, or the farther observable universe, than in the older, or nearer universe, it is expected that the lum ...
Determining the Stellar Spin Axis Orientation
... instrumental artefacts are identified and can be strongly reduced when subtracting both orientations (Brannigam et al 2006). In practice, the spatial information is extracted by measuring the wavelength dependence of the photocentre of the spectral order. This is either done via Gaussian fit or arit ...
... instrumental artefacts are identified and can be strongly reduced when subtracting both orientations (Brannigam et al 2006). In practice, the spatial information is extracted by measuring the wavelength dependence of the photocentre of the spectral order. This is either done via Gaussian fit or arit ...
Digital Video Analysis Of Anomalous Space Objects
... move by more than one pixel over the period of brightening (about 1 second) for this effect to occur. Between points A and B in Figure 13b, MI moves 66.2 pixels in the video frame over an 8 second period. The lateral velocity, which is relatively constant over this interval, is thus about 8 pixels p ...
... move by more than one pixel over the period of brightening (about 1 second) for this effect to occur. Between points A and B in Figure 13b, MI moves 66.2 pixels in the video frame over an 8 second period. The lateral velocity, which is relatively constant over this interval, is thus about 8 pixels p ...
Aries The Ram - Maverick`s E-portfolio
... The constellation of Aries has been home to many legends. Sumerians in Mesopotamia were enthralled by a bright star residing in the constellation of Aries known as Hamal. Sumerians believed that Hamal, which means the lamb, was one of the stars in the Scimitar. They believed that the Scimitar was a ...
... The constellation of Aries has been home to many legends. Sumerians in Mesopotamia were enthralled by a bright star residing in the constellation of Aries known as Hamal. Sumerians believed that Hamal, which means the lamb, was one of the stars in the Scimitar. They believed that the Scimitar was a ...
Cosmological dynamics with non-minimally coupled scalar field and
... components in order to distinguish spectroscopic pairs from false pairs created by projection along the line of sight. Of six pair candidates observed, companions (estimated mass ratios 5:1 and 7:1) are detected for two galaxies down to a 3σ limiting emission-line flux of ∼ 10−17 erg s−1 cm−2 . This ...
... components in order to distinguish spectroscopic pairs from false pairs created by projection along the line of sight. Of six pair candidates observed, companions (estimated mass ratios 5:1 and 7:1) are detected for two galaxies down to a 3σ limiting emission-line flux of ∼ 10−17 erg s−1 cm−2 . This ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.