Science with the Constellation
... may be a dominant component, will provide critical information on the total energy output of the Universe. By looking across a broad range of redshift, Constellation-X will reveal the earliest formation of clusters of galaxies and tell us whether their properties are consistent with current models o ...
... may be a dominant component, will provide critical information on the total energy output of the Universe. By looking across a broad range of redshift, Constellation-X will reveal the earliest formation of clusters of galaxies and tell us whether their properties are consistent with current models o ...
2 Justification and benefits in joining TMT
... multi-wavelength observational approaches are becoming increasingly important in astrophysics. It is important to stress that China will not only be able to build specific instruments as in-kind contributions, but also send delegates to learn key technologies in virtually all areas. The final TMT d ...
... multi-wavelength observational approaches are becoming increasingly important in astrophysics. It is important to stress that China will not only be able to build specific instruments as in-kind contributions, but also send delegates to learn key technologies in virtually all areas. The final TMT d ...
MPA Anniversary Brochure - Max Planck Institute for Astrophysics
... with the theory of comets, with cosmic rays, with solar physics and the structure of stars, and with the formation of the Solar System. Another important research topic was the propagation of magnetohydrodynamic shock waves, produced, for example, by the collision of two galaxy clusters, in the sola ...
... with the theory of comets, with cosmic rays, with solar physics and the structure of stars, and with the formation of the Solar System. Another important research topic was the propagation of magnetohydrodynamic shock waves, produced, for example, by the collision of two galaxy clusters, in the sola ...
Hubble Deep Field Academy -- Overview
... light they can observe in the sky are not necessarily individual stars, and believe that the size of an object in the sky is indicative of its distance from Earth. ...
... light they can observe in the sky are not necessarily individual stars, and believe that the size of an object in the sky is indicative of its distance from Earth. ...
Science Case for the Chinese Participation of TMT
... multi-wavelength observational approaches are becoming increasingly important in astrophysics. It is important to stress that China will not only be able to build specific instruments as in-kind contributions, but also send delegates to learn key technologies in virtually all areas. The final TMT d ...
... multi-wavelength observational approaches are becoming increasingly important in astrophysics. It is important to stress that China will not only be able to build specific instruments as in-kind contributions, but also send delegates to learn key technologies in virtually all areas. The final TMT d ...
Galaxies - WordPress.com
... A galaxies occasionally collide with one another, particularly within cluster of galaxies B galaxies are so closely packed in the universe that they are always interacting with one another C galaxies are so widely separated that they never interact or collide D the universe is composed of one giant ...
... A galaxies occasionally collide with one another, particularly within cluster of galaxies B galaxies are so closely packed in the universe that they are always interacting with one another C galaxies are so widely separated that they never interact or collide D the universe is composed of one giant ...
PDF only - at www.arxiv.org.
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
... We live in a highly dynamic Universe. Small density fluctuations after the Big Bang grew into larger gravitational potential wells. Within the wells dark matter decoupled from gaseous matter, the latter condensed and formed the first stars and galaxies. These first galax ...
2. The X-ray-Radio correlation for bulgeless galaxies
... the same regardless of the distance of the objects, so the luminosity limit is defined solely by the redshifts.......................................................................................................43 Table 2: Sensitivity limits for both C-COSMOS and VLA-COSMOS surveys. The flux sensi ...
... the same regardless of the distance of the objects, so the luminosity limit is defined solely by the redshifts.......................................................................................................43 Table 2: Sensitivity limits for both C-COSMOS and VLA-COSMOS surveys. The flux sensi ...
Guide to the Slit Spectra Reduction Task DOECSLIT
... bias, dark count, and flat field corrected. The spectra should be oriented such that pixels of constant wavelength are aligned with the image columns or lines. Small departures from this alignment are not critical resulting in only a small loss of resolution. Single order observations should be redu ...
... bias, dark count, and flat field corrected. The spectra should be oriented such that pixels of constant wavelength are aligned with the image columns or lines. Small departures from this alignment are not critical resulting in only a small loss of resolution. Single order observations should be redu ...
Type Ia supernovae as stellar endpoints and cosmological tools
... dilutes with volume as space expands. If dark energy has an equation of state w = − 1, corresponding to Einstein’s cosmological constant, , then it has the strange property that the energy density does not dilute as the universe expands; it must be a property of the vacuum. Other possibilities exi ...
... dilutes with volume as space expands. If dark energy has an equation of state w = − 1, corresponding to Einstein’s cosmological constant, , then it has the strange property that the energy density does not dilute as the universe expands; it must be a property of the vacuum. Other possibilities exi ...
Stars, Galaxies, Superuniverses and the Urantia Book, by Frederick
... throughout the master universe the minimum distance between stars would be about 1,400 light years. Actually, the stars cluster into globular clusters, galaxies, clusters of galaxies, and galactic superclusters where the stellar density is significantly greater than the average density, and leaving ...
... throughout the master universe the minimum distance between stars would be about 1,400 light years. Actually, the stars cluster into globular clusters, galaxies, clusters of galaxies, and galactic superclusters where the stellar density is significantly greater than the average density, and leaving ...
T3-Cosmic Star Formation History
... By modeling the emission history of all stars in the Universe at UV, optical, and IR wavelengths from the present epoch to z ≈ 8 and beyond, one can then shed light on some key questions in galaxy formation and evolution studies: Is there a characteristic cosmic epoch of the formation of stars and h ...
... By modeling the emission history of all stars in the Universe at UV, optical, and IR wavelengths from the present epoch to z ≈ 8 and beyond, one can then shed light on some key questions in galaxy formation and evolution studies: Is there a characteristic cosmic epoch of the formation of stars and h ...
Improved stellar parameters of CoRoT-7
... fit the observed lines. The user can manually reject lines or base the rejection on objective criteria like reduced χ2 values and the relative line depths. It takes about one hour to fit 500 lines on a modern laptop. This is done using the program vwatask for fixed values of T eff , log g and vmicro ...
... fit the observed lines. The user can manually reject lines or base the rejection on objective criteria like reduced χ2 values and the relative line depths. It takes about one hour to fit 500 lines on a modern laptop. This is done using the program vwatask for fixed values of T eff , log g and vmicro ...
LIGO SURF 2006 Lecture 1 - Indico
... Eddington, when the Sun was silhouetted against the Hyades star cluster ...
... Eddington, when the Sun was silhouetted against the Hyades star cluster ...
The Norma cluster (ACO3627) – II. The near-infrared Ks
... The Norma cluster (ACO 3627; Abell, Corwin & Olowin 1989) at (l, b, v) = (325◦ , − 7◦ , 4844 km s−1 ) is the nearest rich, massive cluster of galaxies (Kraan-Korteweg et al. 1996; Woudt 1998), with properties comparable to the Coma cluster (Mazure et al. 1998). It has remained relatively unexplored ...
... The Norma cluster (ACO 3627; Abell, Corwin & Olowin 1989) at (l, b, v) = (325◦ , − 7◦ , 4844 km s−1 ) is the nearest rich, massive cluster of galaxies (Kraan-Korteweg et al. 1996; Woudt 1998), with properties comparable to the Coma cluster (Mazure et al. 1998). It has remained relatively unexplored ...
maximum likelihood fitting of tidal streams with application
... SDSS has been expanded to include a new project, SEGUE. This extension will eventually include 3500 deg2 of new imaging data which is collected in 2.5 wide great circles on the sky, but these great circles do not in general match those laid out on the sky for the SDSS, and they are not adjacent to ...
... SDSS has been expanded to include a new project, SEGUE. This extension will eventually include 3500 deg2 of new imaging data which is collected in 2.5 wide great circles on the sky, but these great circles do not in general match those laid out on the sky for the SDSS, and they are not adjacent to ...
The Celestial Sphere CHAPTER 1
... It is evident that for e D 0, hr i D a, as expected for perfectly circular motion. However, hr i deviates from a for other values of e. This function is most easily evaluted numerically. Employing a simple trapezoid method with 106 intervals, gives the results shown in Table S2.1. ...
... It is evident that for e D 0, hr i D a, as expected for perfectly circular motion. However, hr i deviates from a for other values of e. This function is most easily evaluted numerically. Employing a simple trapezoid method with 106 intervals, gives the results shown in Table S2.1. ...
Lambda-CDM model
The ΛCDM (Lambda cold dark matter) or Lambda-CDM model is a parametrization of the Big Bang cosmological model in which the universe contains a cosmological constant, denoted by Lambda (Greek Λ), associated with dark energy, and cold dark matter (abbreviated CDM). It is frequently referred to as the standard model of Big Bang cosmology, because it is the simplest model that provides a reasonably good account of the following properties of the cosmos: the existence and structure of the cosmic microwave background the large-scale structure in the distribution of galaxies the abundances of hydrogen (including deuterium), helium, and lithium the accelerating expansion of the universe observed in the light from distant galaxies and supernovaeThe model assumes that general relativity is the correct theory of gravity on cosmological scales.It emerged in the late 1990s as a concordance cosmology, after a period of time when disparate observed properties of the universe appeared mutually inconsistent, and there was no consensus on the makeup of the energy density of the universe.The ΛCDM model can be extended by adding cosmological inflation, quintessence and other elements that are current areas of speculation and research in cosmology.Some alternative models challenge the assumptions of the ΛCDM model. Examples of these are modified Newtonian dynamics, modified gravity and theories of large-scale variations in the matter density of the universe.