New Astrophysical Opportunities Exploiting Spatio-Temporal Optical Correlations
... and eclipses of spectral lines [22]. The bright emission lines of WR stars make them suitable for comparative studies in different passbands, as discussed above. Optical emission from AGN Nuclear optical continuum emission from AGN is visible whenever there is a direct view of the accretion disc (al ...
... and eclipses of spectral lines [22]. The bright emission lines of WR stars make them suitable for comparative studies in different passbands, as discussed above. Optical emission from AGN Nuclear optical continuum emission from AGN is visible whenever there is a direct view of the accretion disc (al ...
110 - Institute for Astronomy
... – can be understood as a consequence of inward migration within an evolving protoplanetary disc. Brown dwarf secondaries forming at the same time as the primary star have masses which are comparable to the initial mass of the protoplanetary disc. Subsequent disc evolution leads to inward migration, ...
... – can be understood as a consequence of inward migration within an evolving protoplanetary disc. Brown dwarf secondaries forming at the same time as the primary star have masses which are comparable to the initial mass of the protoplanetary disc. Subsequent disc evolution leads to inward migration, ...
Ollscoil na hÉireann, Gaillimh
... over the next few years. The courses include our denominated degree in physics with options in applied physics, astrophysics, biomedical physics, and theoretical physics. We also admit students to Physics via an omnibus first year entry. All our undergraduate programmes have a substantial overlappin ...
... over the next few years. The courses include our denominated degree in physics with options in applied physics, astrophysics, biomedical physics, and theoretical physics. We also admit students to Physics via an omnibus first year entry. All our undergraduate programmes have a substantial overlappin ...
Physical and Kinematical Properties in Central Part of Active
... Activity of the Group for Astrophysical Spectroscopy GAS Luka Č. Popović Astronomical Observatory, Belgrade, Serbia ...
... Activity of the Group for Astrophysical Spectroscopy GAS Luka Č. Popović Astronomical Observatory, Belgrade, Serbia ...
Document
... based telescopes can now reach their theoretical resolution limit. Hence 8 meter AO equipped telescopes (like Gemini) can read a license plate 20 miles away (this is 20 times farther than without AO). For astronomical science adaptive optics has made the sharpest, clearest images of: ...
... based telescopes can now reach their theoretical resolution limit. Hence 8 meter AO equipped telescopes (like Gemini) can read a license plate 20 miles away (this is 20 times farther than without AO). For astronomical science adaptive optics has made the sharpest, clearest images of: ...
History of Spectroscopy
... document, and describes his conclusions from experiments on splitting white light (refraction) into its component colours, to obtain a spectrum. Newton’s work, while a watershed, was nonethe-less, only a step in a long evolution of discovery. The history of spectroscopy should be understood in conte ...
... document, and describes his conclusions from experiments on splitting white light (refraction) into its component colours, to obtain a spectrum. Newton’s work, while a watershed, was nonethe-less, only a step in a long evolution of discovery. The history of spectroscopy should be understood in conte ...
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK
... sweep past the Earth as often as 716 times per second. They were discovered in 1967 by Jocelyn Bell and Antony Hewish. (Coincidentally, the first one to be discovered was also in the constellation of Vulpecula.) Pulsars that have orbiting companions are called binary pulsars. They have been used to ...
... sweep past the Earth as often as 716 times per second. They were discovered in 1967 by Jocelyn Bell and Antony Hewish. (Coincidentally, the first one to be discovered was also in the constellation of Vulpecula.) Pulsars that have orbiting companions are called binary pulsars. They have been used to ...
A Modern Search for Wolf-Rayet Stars in the Magellanic Clouds. III
... Clouds (MCs) was considered essentially complete: twelve WRs were known in the SMC (Massey et al. 2003) and 134 were known in the LMC (Breysacher et al. 1999). These stars had been found by a combination of general objective prism surveys, directed searches, and accidental discoveries by spectroscop ...
... Clouds (MCs) was considered essentially complete: twelve WRs were known in the SMC (Massey et al. 2003) and 134 were known in the LMC (Breysacher et al. 1999). These stars had been found by a combination of general objective prism surveys, directed searches, and accidental discoveries by spectroscop ...
Molecular gas in z~6 quasar host galaxies
... Difficulties : How the observed CO line widths trace the higher than the present-day value. ...
... Difficulties : How the observed CO line widths trace the higher than the present-day value. ...
Double Major in Physics and Astronomy
... Double Maj or in Physics and Astronomy Science & Letters Curriculum, Catalog Year post-200908 Below is a sample semester by semester program for a Science and Letters Curriculum double major in Physics and Astronomy for students admitted to the University after Fall 2009. Individual programs depend ...
... Double Maj or in Physics and Astronomy Science & Letters Curriculum, Catalog Year post-200908 Below is a sample semester by semester program for a Science and Letters Curriculum double major in Physics and Astronomy for students admitted to the University after Fall 2009. Individual programs depend ...
Spectral classification of blue supergiants in M31
... few tens of solar masses. At the same time, they are enormously large with radii comparable to the Earth’s orbit. Because of those features they have been identified as very promising targets for stellar astronomy, enabling quantitative spectral analysis outside the Milky Way [4, 1]. This work adds ...
... few tens of solar masses. At the same time, they are enormously large with radii comparable to the Earth’s orbit. Because of those features they have been identified as very promising targets for stellar astronomy, enabling quantitative spectral analysis outside the Milky Way [4, 1]. This work adds ...
Folie 1
... • Eventually, the density in the core becomes so great significantly opacity develops. This slows the collapse, and the core begins to heat. When the temperature reaches about 2000K, molecular dissociation occurs, and the molecular H dissociates into atomic hydrogen. ...
... • Eventually, the density in the core becomes so great significantly opacity develops. This slows the collapse, and the core begins to heat. When the temperature reaches about 2000K, molecular dissociation occurs, and the molecular H dissociates into atomic hydrogen. ...
The California Planet Survey II. A Saturn
... nitudes are plotted in the second panel of Figure 4 at the same magnitude scale as the top panel. The check star is HD 153897 (V = 6.57, B − V = 0.43, F4V). The yearly means of the K − C measurements have a range of only 0.0016 mag; their standard deviation is only 0.0007 mag. The standard deviation ...
... nitudes are plotted in the second panel of Figure 4 at the same magnitude scale as the top panel. The check star is HD 153897 (V = 6.57, B − V = 0.43, F4V). The yearly means of the K − C measurements have a range of only 0.0016 mag; their standard deviation is only 0.0007 mag. The standard deviation ...
Please Highlight this Area and Add your Main Title
... information about stellar properties, such as mass, radius, luminosity, temperature, internal and external structure, composition, and evolution. This information can then be used to understand other stars. Professional astronomers have neither the available time nor the unlimited telescope access n ...
... information about stellar properties, such as mass, radius, luminosity, temperature, internal and external structure, composition, and evolution. This information can then be used to understand other stars. Professional astronomers have neither the available time nor the unlimited telescope access n ...
Introduc on to the Fundamental Astrophysics Course
... Fundamental Astrophysics • Fundamental Astrophysics is meant to bring you the basics or fundamentals to understand the main (astro)physical phenomena in the Universe at all scales from the largest (Universe ...
... Fundamental Astrophysics • Fundamental Astrophysics is meant to bring you the basics or fundamentals to understand the main (astro)physical phenomena in the Universe at all scales from the largest (Universe ...
Project 9: Stellar Spectra: Temperature
... consists of measuring the equivalent width of some spectral lines that are sensitive to changes in temperature. The lines used in this project are the hydrogen Hα line at 6563 Å and the doublet Na I lines at 5890 Å and 5896 Å. In this project the student can also learn how to extract ...
... consists of measuring the equivalent width of some spectral lines that are sensitive to changes in temperature. The lines used in this project are the hydrogen Hα line at 6563 Å and the doublet Na I lines at 5890 Å and 5896 Å. In this project the student can also learn how to extract ...
2020 Vision: An Overview of New Worlds, New Horizons in
... left from the big bang have enabled astronomers to determine the age and structure of the universe. Other astronomical observations have revealed that most of the matter in the universe is invisible (i.e., “dark”) and that the expansion of the universe is accelerating in an unexpected and unexplaine ...
... left from the big bang have enabled astronomers to determine the age and structure of the universe. Other astronomical observations have revealed that most of the matter in the universe is invisible (i.e., “dark”) and that the expansion of the universe is accelerating in an unexpected and unexplaine ...
Mnassa Report 2005 - (UCT)
... Kinman (Tuscon, USA) have continued their work on the luminosities and distance scales of type 11 Cepheids, RR Lyrae stars and Mira variables. Work was also continued (Feast, Whitelock, Menzies) on the infrared observations of local group galaxies including collaboration with an international group ...
... Kinman (Tuscon, USA) have continued their work on the luminosities and distance scales of type 11 Cepheids, RR Lyrae stars and Mira variables. Work was also continued (Feast, Whitelock, Menzies) on the infrared observations of local group galaxies including collaboration with an international group ...
WVU astrophysicist part of research team that proves Einstein
... Einsteinís theory of general relativity predicted that in a strong gravitational field, like that of a pulsar, an objectís spin axis should slowly change direction as the pulsar orbits around its companion. This change in direction is called precession. The team of researchers discovered that one ...
... Einsteinís theory of general relativity predicted that in a strong gravitational field, like that of a pulsar, an objectís spin axis should slowly change direction as the pulsar orbits around its companion. This change in direction is called precession. The team of researchers discovered that one ...
Diapositiva 1 - Yale University
... What is an Astrometric Survey? An astrometric survey can be defined as a search oriented to finding those celestial objects meeting a given accuracy in their absolute or relative positions, motions or trigonometric distances. Some of these surveys have been conducted with ground-based meridian ...
... What is an Astrometric Survey? An astrometric survey can be defined as a search oriented to finding those celestial objects meeting a given accuracy in their absolute or relative positions, motions or trigonometric distances. Some of these surveys have been conducted with ground-based meridian ...
Open access
... events with lenses passing over source stars, including OGLE-2004-BLG-254, MOA-2007-BLG-176, MOA2007-BLG-233/OGLE-2007-BLG-302, MOA-2009-BLG-174, MOA-2010-BLG-436, MOA-2011-BLG-093, MOA-2011-BLG-274, OGLE-2011-BLG-0990/MOA-2011-BLG-300, and OGLE-2011-BLG-1101/MOA2011-BLG-325. For all events, we meas ...
... events with lenses passing over source stars, including OGLE-2004-BLG-254, MOA-2007-BLG-176, MOA2007-BLG-233/OGLE-2007-BLG-302, MOA-2009-BLG-174, MOA-2010-BLG-436, MOA-2011-BLG-093, MOA-2011-BLG-274, OGLE-2011-BLG-0990/MOA-2011-BLG-300, and OGLE-2011-BLG-1101/MOA2011-BLG-325. For all events, we meas ...
0762 Jun 15
... times of contact and the magnitude of the eclipse at a given place. For the calculation of solar eclipses from the 17th century on to the present time precise results can be obtained since for that period deltaT is known sufficiently accurately from telescopic observations. For investigations on old ...
... times of contact and the magnitude of the eclipse at a given place. For the calculation of solar eclipses from the 17th century on to the present time precise results can be obtained since for that period deltaT is known sufficiently accurately from telescopic observations. For investigations on old ...
DOC
... The existence of planetary systems beyond our own has been repeatedly confirmed over the past decade. In fact, over 200 planets have already been discovered orbiting stars other than the Sun. The great majority of these planets are giant gas planets, similar to Jupiter in our solar system, many of t ...
... The existence of planetary systems beyond our own has been repeatedly confirmed over the past decade. In fact, over 200 planets have already been discovered orbiting stars other than the Sun. The great majority of these planets are giant gas planets, similar to Jupiter in our solar system, many of t ...
Chapter 7 - Shodhganga
... features provide crucial information about the physics behind these eruptions. These eruptive events have a great influence on interplanetary space and near Earth environment. These include drag on Earth–orbiting satellites as a result of which their lifetime in the orbits is shortened. Geomagnetic ...
... features provide crucial information about the physics behind these eruptions. These eruptive events have a great influence on interplanetary space and near Earth environment. These include drag on Earth–orbiting satellites as a result of which their lifetime in the orbits is shortened. Geomagnetic ...
Indian Institute of Astrophysics
The Indian Institute of Astrophysics (IIA), with its headquarters in Bangalore (Karnataka state), India, is a premier national institute of India for the study of and research into topics pertaining to astronomy, astrophysics and related subjects.The Institute has a network of laboratories and observatories located in various places in India, including Kodaikanal (the Kodaikanal Solar Observatory), Kavalur (the Vainu Bappu Observatory), Gauribidanur, Hanle (the Indian Astronomical Observatory) and Hosakote.