Jul y 9- 11,
... central supermassive black holes (SMBHs) will be more often present even in smaller galaxies when seeds are generated from the remnants of the first massive stars rather than via direct gas collapse. Consequently, measurement of the local occupation fraction provides an observational discriminator b ...
... central supermassive black holes (SMBHs) will be more often present even in smaller galaxies when seeds are generated from the remnants of the first massive stars rather than via direct gas collapse. Consequently, measurement of the local occupation fraction provides an observational discriminator b ...
Science with the Constellation
... such as the 10 m Keck Observatory, and by observing from space, away fro m the effects of the Earth's atmosphere. As a result, the entire electromagnetic spectrum has been opened to exploration and new discoveries have been made at an increasingly fast pace. For instance, the Cosmic Background Explo ...
... such as the 10 m Keck Observatory, and by observing from space, away fro m the effects of the Earth's atmosphere. As a result, the entire electromagnetic spectrum has been opened to exploration and new discoveries have been made at an increasingly fast pace. For instance, the Cosmic Background Explo ...
Multiwavelength observations of XTE J1118+480`s outburst
... in IGR J16318-4848: Filliatre & Chaty 2004, ApJ 616, 469) S. Chaty - ESO - 28/11/2006 ...
... in IGR J16318-4848: Filliatre & Chaty 2004, ApJ 616, 469) S. Chaty - ESO - 28/11/2006 ...
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 ...
The Sun as a star: observations of white-light flares - HAL-Insu
... 2009) identified WL emission in relatively small flares, which supports the view that WL emission could be a peculiar feature of a flare and not associated to the largest flares only. Knowing how much energy is radiated as a whole and at each wavelength is important both to understand the physical p ...
... 2009) identified WL emission in relatively small flares, which supports the view that WL emission could be a peculiar feature of a flare and not associated to the largest flares only. Knowing how much energy is radiated as a whole and at each wavelength is important both to understand the physical p ...
Los Alamos - LIGO
... mysterious force, but because the smaller objects travel through space that is warped by the larger object 27-March-03 ...
... mysterious force, but because the smaller objects travel through space that is warped by the larger object 27-March-03 ...
Jul y 10-12,
... IGR J17091-3624 is a black hole system which has very recently attracted the interest in the scientific community as it is the first system to show some of the bizarre, high-amplitude, highly-structured X-ray variability only seen before in the extremely energetic black hole system GRS 1915+105. In ...
... IGR J17091-3624 is a black hole system which has very recently attracted the interest in the scientific community as it is the first system to show some of the bizarre, high-amplitude, highly-structured X-ray variability only seen before in the extremely energetic black hole system GRS 1915+105. In ...
implication on the mass and
... Evolution of the comoving IR energy density up to z=1 (green-filled region) and the respective contributions from low luminosity galaxies (i.e., LIR<1011Lsun, blue-filled area), ``infrared luminous'' sources (i.e., LIR>1011Lsun, orange-filled region) and ULIRGs (i.e., LIR>1012Lsun, red-filled region ...
... Evolution of the comoving IR energy density up to z=1 (green-filled region) and the respective contributions from low luminosity galaxies (i.e., LIR<1011Lsun, blue-filled area), ``infrared luminous'' sources (i.e., LIR>1011Lsun, orange-filled region) and ULIRGs (i.e., LIR>1012Lsun, red-filled region ...
A Study of the Nature and Representative Features of Supernova
... distinct class of objects. Baade proceeded to identify the Crab Nebula as a supernova remnant. Advances during and since the first half of the 20th Century have been given a vital theoretical basis for our understanding of supernovae and their remnants. Over the last few decades 3 interrelated key a ...
... distinct class of objects. Baade proceeded to identify the Crab Nebula as a supernova remnant. Advances during and since the first half of the 20th Century have been given a vital theoretical basis for our understanding of supernovae and their remnants. Over the last few decades 3 interrelated key a ...
ASI 2017 Abstract Book - Astronomical Society of India
... Galaxy transformation in the local Universe One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different ...
... Galaxy transformation in the local Universe One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different ...
5 Report of the Panel on Stars and Stellar Evolution
... stellar phenomena, leading to a number of breakthrough discoveries. Newly discovered radio pulsars in binaries, including the unique double pulsar system, provide some of the most stringent tests of general relativity. Advances in X-ray astronomy have led to new discoveries related to accreting neut ...
... stellar phenomena, leading to a number of breakthrough discoveries. Newly discovered radio pulsars in binaries, including the unique double pulsar system, provide some of the most stringent tests of general relativity. Advances in X-ray astronomy have led to new discoveries related to accreting neut ...
X-ray sources in the starburst spiral galaxy M 83
... in the analysis. Discrete X-ray sources were identified using the CIAO source-finding routine celldetect. The percentage of the PSF energy encircled by the detect cells was chosen to be 80% at 1.5 keV. We did not select a higher percentage in order to avoid confusion of close-by sources in the nucle ...
... in the analysis. Discrete X-ray sources were identified using the CIAO source-finding routine celldetect. The percentage of the PSF energy encircled by the detect cells was chosen to be 80% at 1.5 keV. We did not select a higher percentage in order to avoid confusion of close-by sources in the nucle ...
neutron star
... escape velocity equals the speed of light. • This spherical surface is known as the event horizon. • The radius of the event horizon is known as the ...
... escape velocity equals the speed of light. • This spherical surface is known as the event horizon. • The radius of the event horizon is known as the ...
Joint formation of QSOs and spheroids: QSOs as clocks of star
... Direct and indirect observational evidence leads to the conclusion that high-redshift QSOs did shine in the core of early-type protogalaxies during their main episode of star formation. Exploiting this fact, we derive the rate of formation of this kind of stellar system at high redshift by using the ...
... Direct and indirect observational evidence leads to the conclusion that high-redshift QSOs did shine in the core of early-type protogalaxies during their main episode of star formation. Exploiting this fact, we derive the rate of formation of this kind of stellar system at high redshift by using the ...
Stellar populations in the nuclear regions of nearby radio galaxies
... CuAr+CuNe exposure per spectral region and telescope position was also obtained for all objects. The total integration times for the radio galaxies (from 1–3 hrÞ were split into time intervals of about 1200 or 1800 s in order to diminish the effect of cosmic rays on individual frames and to allow us ...
... CuAr+CuNe exposure per spectral region and telescope position was also obtained for all objects. The total integration times for the radio galaxies (from 1–3 hrÞ were split into time intervals of about 1200 or 1800 s in order to diminish the effect of cosmic rays on individual frames and to allow us ...
story of telescope
... rules of Arabic astronomers. It picture of his Samarkand was only after a few centuries observatory. that European astronomers became proficient enough to make observations that could rival old data. In the middle of 15th century AD, astronomers like Regiomontanus of Germany and Georg Purbach of Vie ...
... rules of Arabic astronomers. It picture of his Samarkand was only after a few centuries observatory. that European astronomers became proficient enough to make observations that could rival old data. In the middle of 15th century AD, astronomers like Regiomontanus of Germany and Georg Purbach of Vie ...
STEPHAN`S QUINTET
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
Indications for an influence of Hot Jupiters
... and the age of their host stars. It has long been speculated that close-in exoplanets can influence the stellar activity level. However, testing for tidal or magnetic interaction effects in samples of planet-hosting stars is difficult because stellar activity hinders exoplanet detection, so that ste ...
... and the age of their host stars. It has long been speculated that close-in exoplanets can influence the stellar activity level. However, testing for tidal or magnetic interaction effects in samples of planet-hosting stars is difficult because stellar activity hinders exoplanet detection, so that ste ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... of stars, bursts of star formation) and external effects [disruption by Galactic tides, disc and bulge shocking, ram pressure stripping of gas by the interstellar medium (ISM)]. There is also growing evidence for interactions and encounters of satellites with each other, for example, in the tidal st ...
... of stars, bursts of star formation) and external effects [disruption by Galactic tides, disc and bulge shocking, ram pressure stripping of gas by the interstellar medium (ISM)]. There is also growing evidence for interactions and encounters of satellites with each other, for example, in the tidal st ...
Comprehensive search for natural satellites of Vesta by the Dawn
... Vesta ranges from 1.77 to 159 h for orbits from 1 to 20 Vestan radii. The variation in the duration of the OpNavs allows for detection of motion of potential satellites across more than one pixel. 2.2. Satellite search mosaic The satellite search mosaic images extended 5000 km (20 Vestan radii) fro ...
... Vesta ranges from 1.77 to 159 h for orbits from 1 to 20 Vestan radii. The variation in the duration of the OpNavs allows for detection of motion of potential satellites across more than one pixel. 2.2. Satellite search mosaic The satellite search mosaic images extended 5000 km (20 Vestan radii) fro ...
Eye in the sky - Academy of Science of South Africa
... outh Africa has a long history of astronomy – right back to prehistoric times, when the early San people recorded astronomical events in their rock art, recording how they interpreted events in the world around them in terms of their known world. But this was not the only way that our early forebear ...
... outh Africa has a long history of astronomy – right back to prehistoric times, when the early San people recorded astronomical events in their rock art, recording how they interpreted events in the world around them in terms of their known world. But this was not the only way that our early forebear ...
Lecture 2
... Most galaxies are too far away to pick out their Cepheid variables. How do we measure distances to them? Using atomic spectra, Doppler shifts and the Hubble law. ...
... Most galaxies are too far away to pick out their Cepheid variables. How do we measure distances to them? Using atomic spectra, Doppler shifts and the Hubble law. ...
Document
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
Galaxies
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
Magnificent Cosmos - Academic Program Pages at Evergreen
... star’s blazing coronal gases—remains unclear. These effect of the starlight. As a star sways to and fro relative to findings are mysterious, given that the radius of Jupiter’s Earth, its light waves become cyclically stretched, then com- orbit is five times larger than that of Earth. These pressed—s ...
... star’s blazing coronal gases—remains unclear. These effect of the starlight. As a star sways to and fro relative to findings are mysterious, given that the radius of Jupiter’s Earth, its light waves become cyclically stretched, then com- orbit is five times larger than that of Earth. These pressed—s ...