JENAM-2011 Book of abstracts
... motions, essentially free of systematic errors, but also the largest single improvement factor in the subject’s long history, exceeding even that achieved by Tycho Brahe himself. I will summarise the fundamental principles of the measurement concept, and provide some topical examples of the scientifi ...
... motions, essentially free of systematic errors, but also the largest single improvement factor in the subject’s long history, exceeding even that achieved by Tycho Brahe himself. I will summarise the fundamental principles of the measurement concept, and provide some topical examples of the scientifi ...
2. The X-ray-Radio correlation for bulgeless galaxies
... Correlations between the X-ray and Radio emissions are observed for both galaxies with Active Galactic Nuclei (AGN) and in Star Forming galaxies. For the first case, the Xray/Radio correlation seems to present different slopes for Radio-loud and Radio-quiet AGN and may be used to estimate the mass o ...
... Correlations between the X-ray and Radio emissions are observed for both galaxies with Active Galactic Nuclei (AGN) and in Star Forming galaxies. For the first case, the Xray/Radio correlation seems to present different slopes for Radio-loud and Radio-quiet AGN and may be used to estimate the mass o ...
Lecture notes 18: Galaxies and galaxy clusters
... where the Sun was but one of many. Kant went on to propose that if the Milky Way were limited then perhaps the diffuse “elliptical nebulae” seen in the night sky may also be distant disklike systems similar to our own but seperate. Kant called these objects island universes. Charles Messier (1730–181 ...
... where the Sun was but one of many. Kant went on to propose that if the Milky Way were limited then perhaps the diffuse “elliptical nebulae” seen in the night sky may also be distant disklike systems similar to our own but seperate. Kant called these objects island universes. Charles Messier (1730–181 ...
Altair -- the ``hottest`` magnetically active star in X-rays
... (Schmitt 1997). Since located at a distance of only 5.1 pc, Altair is a unique target for studying the X-ray properties of late A-type stars in greater detail. Altair is known to be a very fast rotator from spectroscopic measurements. Its rotational velocity has been determined to V sin i ≈ 190–250 ...
... (Schmitt 1997). Since located at a distance of only 5.1 pc, Altair is a unique target for studying the X-ray properties of late A-type stars in greater detail. Altair is known to be a very fast rotator from spectroscopic measurements. Its rotational velocity has been determined to V sin i ≈ 190–250 ...
Radio Emission Toward Regions of Massive Star Formation
... Our understanding of high-mass star formation is not that simple. In this dissertation and per convention, stars with enough mass to end their lives as core-collapse supernovae (M∗ ≥ 8.0 M ) are considered ‘high-mass’ stars. High-mass stars have difficulty forming in this fashion, because the onset ...
... Our understanding of high-mass star formation is not that simple. In this dissertation and per convention, stars with enough mass to end their lives as core-collapse supernovae (M∗ ≥ 8.0 M ) are considered ‘high-mass’ stars. High-mass stars have difficulty forming in this fashion, because the onset ...
Spacecraft Navigation Using X-Ray Pulsars
... on their collapse stars with insufficient mass to create a black hole produce several types of ultradense, compact objects.6,7 One such proposed object is a neutron star (NS).8−10 This object is the result of a massive star that has exhausted its nuclear fuel and undergone a core collapse resulting ...
... on their collapse stars with insufficient mass to create a black hole produce several types of ultradense, compact objects.6,7 One such proposed object is a neutron star (NS).8−10 This object is the result of a massive star that has exhausted its nuclear fuel and undergone a core collapse resulting ...
G050629-00 - DCC
... Weak, random gravitational waves could be bathing us Left over from the early universe, analogous to CMBR ; or From many overlapping signals from astrophysical objects Assume spectrum is constant in time ...
... Weak, random gravitational waves could be bathing us Left over from the early universe, analogous to CMBR ; or From many overlapping signals from astrophysical objects Assume spectrum is constant in time ...
Measuring distances to the edge of the local group
... estimating the size of a galaxy based on its rotational velocity, but changed at certain mass limits. Was this caused by an underlying physical phenomenon that we did not understand the mechanics of? Or was it potentially a problem with our measuring techniques? Noordermeer & Verheijen (2007) took a ...
... estimating the size of a galaxy based on its rotational velocity, but changed at certain mass limits. Was this caused by an underlying physical phenomenon that we did not understand the mechanics of? Or was it potentially a problem with our measuring techniques? Noordermeer & Verheijen (2007) took a ...
VIRGO status and GW physics
... ► Upper limit on rate of detectable events: 0.15 per day (at 90% C.L.) ► Sensitive to GW energy emission as small as ~107 M at 10 kpc, or ~0.25 M at the distance of the Virgo Cluster ...
... ► Upper limit on rate of detectable events: 0.15 per day (at 90% C.L.) ► Sensitive to GW energy emission as small as ~107 M at 10 kpc, or ~0.25 M at the distance of the Virgo Cluster ...
Chandra News March 2005 Published by the Chandra X-ray Center (CXC)
... years that it took to accomplish this are an unfortunate testament to the challenges one faces in accomplishing major astrophysics missions. The overwhelming technical and scientific success of this mission, designed for three years of operation with a goal of five and currently well into its sixth ...
... years that it took to accomplish this are an unfortunate testament to the challenges one faces in accomplishing major astrophysics missions. The overwhelming technical and scientific success of this mission, designed for three years of operation with a goal of five and currently well into its sixth ...
Distance to VY Canis Majoris with VERA
... J07252640 affect those of the target source. The position of J07252640 was determined with an accuracy of 0.34 mas in right ascension and 0.94 mas in declination, respectively (Kovalev et al. 2007). Because these offsets are constant at all epochs, it dose not affect the parallax measurements. Als ...
... J07252640 affect those of the target source. The position of J07252640 was determined with an accuracy of 0.34 mas in right ascension and 0.94 mas in declination, respectively (Kovalev et al. 2007). Because these offsets are constant at all epochs, it dose not affect the parallax measurements. Als ...
THE STAR FORMATION AND NUCLEAR ACCRETION HISTORIES OF NORMAL GALAXIES
... The spectroscopic redshifts of the galaxies were measured using Hectospec, a robotic 300 fiber spectrograph for the MMT (Fabricant et al. 1998, Roll et al. 1998, Fabricant et al. 2005) and are 95% complete for R < 19.2; our analysis is not significantly affected by the modest level of incompleteness ...
... The spectroscopic redshifts of the galaxies were measured using Hectospec, a robotic 300 fiber spectrograph for the MMT (Fabricant et al. 1998, Roll et al. 1998, Fabricant et al. 2005) and are 95% complete for R < 19.2; our analysis is not significantly affected by the modest level of incompleteness ...
A catalogue of the Chandra Deep Field South with multi
... whenever we talk about techniques in general, they are applied to all fields observed in COMBO-17. ...
... whenever we talk about techniques in general, they are applied to all fields observed in COMBO-17. ...
Cool Stars in the Galaxy — A ROSAT and ASCA View.
... This thesis deals mainly with emission from stellar sources, however an understanding of the solar corona is useful when considering the stellar equivalents. Figure 1.1 shows a soft X-ray image of the solar corona obtained using the Japanese Yohkoh satellite. The bright regions are active (emit in t ...
... This thesis deals mainly with emission from stellar sources, however an understanding of the solar corona is useful when considering the stellar equivalents. Figure 1.1 shows a soft X-ray image of the solar corona obtained using the Japanese Yohkoh satellite. The bright regions are active (emit in t ...
IXO as an observatory in the large telescopes era
... indicating a geometrically thick torus around the SMBH (Ueda et al. 2007). This implies that many similar objects, if observed in edge-on geometry, could be missed in the current hard X-ray surveys due to the suppression of transmitted emission as they become heavily Compton thick (NH > a few 1024 c ...
... indicating a geometrically thick torus around the SMBH (Ueda et al. 2007). This implies that many similar objects, if observed in edge-on geometry, could be missed in the current hard X-ray surveys due to the suppression of transmitted emission as they become heavily Compton thick (NH > a few 1024 c ...
Article PDF - IOPscience
... objects (CSOs) taken with the Infrared Spectrograph on the Spitzer Space Telescope. The hosts of these young, powerful radio galaxies show significant diversity in their mid-IR spectra. This includes multiple atomic fine-structure lines, H2 gas, polycyclic aromatic hydrocarbon (PAH) emission, warm d ...
... objects (CSOs) taken with the Infrared Spectrograph on the Spitzer Space Telescope. The hosts of these young, powerful radio galaxies show significant diversity in their mid-IR spectra. This includes multiple atomic fine-structure lines, H2 gas, polycyclic aromatic hydrocarbon (PAH) emission, warm d ...
The white dwarf population within 40 pc of the Sun
... For each of the synthetic white dwarf populations described below, we generated 50 independent Monte Carlo simulations employing different initial seeds. Furthermore, for each of these Monte Carlo realizations, we increased the number of simulated Monte Carlo realizations to 104 using bootstrap tech ...
... For each of the synthetic white dwarf populations described below, we generated 50 independent Monte Carlo simulations employing different initial seeds. Furthermore, for each of these Monte Carlo realizations, we increased the number of simulated Monte Carlo realizations to 104 using bootstrap tech ...
The white dwarf population within 40 pc of the Sun
... white dwarfs carries crucial information about the physical processes that govern the evolution of the vast majority of stars and, in particular, of the total amount of mass lost by low- and intermediate-mass stars during the red giant and asymptotic giant branch evolutionary phases. Also, the popul ...
... white dwarfs carries crucial information about the physical processes that govern the evolution of the vast majority of stars and, in particular, of the total amount of mass lost by low- and intermediate-mass stars during the red giant and asymptotic giant branch evolutionary phases. Also, the popul ...
Wandering in the Redshift Desert
... many of us believed they were caught in a merger-driven starburst. It was quite a surprise when one of these galaxies (BzK-15504 at z = 2.38) did not show any sign of ongoing merging, but on SINFONI 3D spectroscopy looked like a rather ordered rotating disc (Genzel et al., 2006). But still, its many ...
... many of us believed they were caught in a merger-driven starburst. It was quite a surprise when one of these galaxies (BzK-15504 at z = 2.38) did not show any sign of ongoing merging, but on SINFONI 3D spectroscopy looked like a rather ordered rotating disc (Genzel et al., 2006). But still, its many ...
PDF
... origin of galaxy morphologies lies in the extent to which galaxies may have interacted during their history, as well as the extent to which it may be possible to have early “monolithic” collapse of large systems as opposed to more gradual, hierarchical assembly. ...
... origin of galaxy morphologies lies in the extent to which galaxies may have interacted during their history, as well as the extent to which it may be possible to have early “monolithic” collapse of large systems as opposed to more gradual, hierarchical assembly. ...
File - Mr. Catt`s Class
... 5. The Hubble law states that a galaxy’s recessional speed () is directly proportional to its distance (d): = H0d, where H0 is the Hubble constant (the proportionality constant in the Hubble law; the ratio of recessional velocities of galaxies to their distances). ...
... 5. The Hubble law states that a galaxy’s recessional speed () is directly proportional to its distance (d): = H0d, where H0 is the Hubble constant (the proportionality constant in the Hubble law; the ratio of recessional velocities of galaxies to their distances). ...
Annual Report 2006/2007
... when the Universe was less than 5% of its present age. The theme of the NOVA Program is to unravel the history of the universe and to further develop the understanding of the life cycle of stars and galaxies. The NOVA research program concentrates on the following three interconnected areas: • Netw ...
... when the Universe was less than 5% of its present age. The theme of the NOVA Program is to unravel the history of the universe and to further develop the understanding of the life cycle of stars and galaxies. The NOVA research program concentrates on the following three interconnected areas: • Netw ...
SUB-KILOPARSEC IMAGING OF COOL MOLECULAR GAS IN
... Extensive effort has gone towards studying gas and dust both in the local universe and at high redshift in order to understand the physics and history of star formation. One of the most studied correlations is the powerlaw relationship between the gas surface density, Σgas , and the SFR surface dens ...
... Extensive effort has gone towards studying gas and dust both in the local universe and at high redshift in order to understand the physics and history of star formation. One of the most studied correlations is the powerlaw relationship between the gas surface density, Σgas , and the SFR surface dens ...
Super-Eddington outburst in a binary system: V4641 Sgr Mikhail Revnivtsev, Marat Gilfanov
... • We argue that V4641 Sgr in Sep. 1999 demonstrated an episode of super-Eddington accretion • During this episode a powerful expended evelope was formed • When the accretion rate decreased the envelope vanished • X-ray observations support this picture: we have detected the change in the X-ray absor ...
... • We argue that V4641 Sgr in Sep. 1999 demonstrated an episode of super-Eddington accretion • During this episode a powerful expended evelope was formed • When the accretion rate decreased the envelope vanished • X-ray observations support this picture: we have detected the change in the X-ray absor ...
EROs and submm galaxies: Expectations for FMOS in the
... which appear to be dusty vigorous star-forming galaxies. Half the total extragalactic background is in the submm, while SMGs make up more than half the extragalactic submm background >25% of all stars since the Big Bang have formed in SMGs. ...
... which appear to be dusty vigorous star-forming galaxies. Half the total extragalactic background is in the submm, while SMGs make up more than half the extragalactic submm background >25% of all stars since the Big Bang have formed in SMGs. ...