SXDS Highlights : Subaru / FOCAS Spectroscopy
... HST/NICMOS H-band Observations are not sufficient ! H-band observation only covers up to 4000A in the rest-frame, and star-forming regions can dominate the morphology. HST/NICMOS sample is limited to a small number of objects in Hubble Deep Field and does not have bright (~Mv*) galaxies at z~3. The ...
... HST/NICMOS H-band Observations are not sufficient ! H-band observation only covers up to 4000A in the rest-frame, and star-forming regions can dominate the morphology. HST/NICMOS sample is limited to a small number of objects in Hubble Deep Field and does not have bright (~Mv*) galaxies at z~3. The ...
How to interpret LPV in roAp stars Hiromoto Shibahashi , Don Kurtz
... Why do the LPV in Nd III and Pr III show such monotonic blue-to-red movement, while the photometric observations imply axisymmetric dipole oscillations, from which blueto-red-to-blue LPV are expected? The Nd III 6145 line-forming layer is moving with a maximum speed of 18 km s-1 in one pulsatio ...
... Why do the LPV in Nd III and Pr III show such monotonic blue-to-red movement, while the photometric observations imply axisymmetric dipole oscillations, from which blueto-red-to-blue LPV are expected? The Nd III 6145 line-forming layer is moving with a maximum speed of 18 km s-1 in one pulsatio ...
M101: The Pinwheel Galaxy
... In fact, M101’s disk is so thin that the Hubble telescope easily sees many more distant galaxies lying behind it. Seeing these background galaxies shows that a galaxy’s disk is really mostly empty space. The Hubble image of M101 is 95,000 light-years across. A beam of light would travel 95,000 years ...
... In fact, M101’s disk is so thin that the Hubble telescope easily sees many more distant galaxies lying behind it. Seeing these background galaxies shows that a galaxy’s disk is really mostly empty space. The Hubble image of M101 is 95,000 light-years across. A beam of light would travel 95,000 years ...
PH607lec12-5gal3
... didn’t form as many stars early-on (and thus lots of gas left) Spirals are forming stars at a few Msun per year, and we know that there is ~a few x 109 Msun of HI mass in a typical spiral ...
... didn’t form as many stars early-on (and thus lots of gas left) Spirals are forming stars at a few Msun per year, and we know that there is ~a few x 109 Msun of HI mass in a typical spiral ...
1 Introduction - Wiley-VCH
... Owing to the new generation of ground-based and space facilities, galaxies are now observable at redshifts larger than 5, allowing us to picture the universe 1 Gyr after its formation. For this reason, galaxies can be used to probe the mass distribution at earlier and earlier epochs (z & 6), provi ...
... Owing to the new generation of ground-based and space facilities, galaxies are now observable at redshifts larger than 5, allowing us to picture the universe 1 Gyr after its formation. For this reason, galaxies can be used to probe the mass distribution at earlier and earlier epochs (z & 6), provi ...
Formation of z~6 Quasars from Hierarchical Galaxy Mergers
... density peaks ¥ !CDM cosmology suggests that small objects form first and merge - Òhierarchical assemblyÓ ¥ Originates in highly overdense regions in the initial dark matter density distribution. ¥ Quasar and host form from many gas-rich mergers. ...
... density peaks ¥ !CDM cosmology suggests that small objects form first and merge - Òhierarchical assemblyÓ ¥ Originates in highly overdense regions in the initial dark matter density distribution. ¥ Quasar and host form from many gas-rich mergers. ...
talk
... ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rotation curve data with theoretical models require baryons in dwarfs to occupy ...
... ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rotation curve data with theoretical models require baryons in dwarfs to occupy ...
Ross, Michael Elsohn. What`s the Matter in Mr. Whiskers
... particles that are too particles too small to be seen. small to see, but even [Clarification Statement: Examples then the matter still of evidence could include adding exists and can be air to expand a basketball, detected by other means. compressing air in a syringe, A model showing that dissolving ...
... particles that are too particles too small to be seen. small to see, but even [Clarification Statement: Examples then the matter still of evidence could include adding exists and can be air to expand a basketball, detected by other means. compressing air in a syringe, A model showing that dissolving ...
M104: The Sombrero Galaxy
... Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombrero is suspected of harboring a central black hole that is billions of times more massi ...
... Sombrero contains nearly 2,000 globular clusters —10 times as many as orbit our Milky Way. The ages of the clusters are similar to those in the Milky Way, ranging from 10 billion to 13 billion years old. The Sombrero is suspected of harboring a central black hole that is billions of times more massi ...
arXiv:1502.04693v1 [gr
... polarization, robust methods for delensing the CMB polarization sky are becoming increasingly important. We investigate in detail the possibility of delensing the CMB with the cosmic infrared background (CIB), emission from dusty star-forming galaxies that is an excellent tracer of the CMB lensing s ...
... polarization, robust methods for delensing the CMB polarization sky are becoming increasingly important. We investigate in detail the possibility of delensing the CMB with the cosmic infrared background (CIB), emission from dusty star-forming galaxies that is an excellent tracer of the CMB lensing s ...
Lecture 21: The Doppler effect - Harvard University Department of
... towards the alien. Thus the earth’s velocity as viewed from far away has wiggles due to the annual orbit. If the earth were much bigger, the sun would also have detectable wiggles. So what we are seeing in the 51 Pegasi spectrum above are wiggles due to a very large planet in a tight orbit with that ...
... towards the alien. Thus the earth’s velocity as viewed from far away has wiggles due to the annual orbit. If the earth were much bigger, the sun would also have detectable wiggles. So what we are seeing in the 51 Pegasi spectrum above are wiggles due to a very large planet in a tight orbit with that ...
20_Testbank
... Answer: We can determine the distance to solar system objects through radar ranging. This gives us an accurate distance to the Sun so that we can use stellar parallax to measure the distances to the nearest stars. The Hyades is an open cluster whose stars are near enough to us that their distances c ...
... Answer: We can determine the distance to solar system objects through radar ranging. This gives us an accurate distance to the Sun so that we can use stellar parallax to measure the distances to the nearest stars. The Hyades is an open cluster whose stars are near enough to us that their distances c ...
Wednesday, Sept. 24 - Department of Physics and Astronomy
... Kirchhoff’s Laws • 3 empirical laws a) Hot opaque body -> continuous spectrum b) Cooler transparent gas between source & observer -> absorption line spectrum c) Diffuse, transparent gas -> emission line spectrum ...
... Kirchhoff’s Laws • 3 empirical laws a) Hot opaque body -> continuous spectrum b) Cooler transparent gas between source & observer -> absorption line spectrum c) Diffuse, transparent gas -> emission line spectrum ...
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.