Infrared Astronomy
... eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800. He named the invisible radiation measured by his thermometers (see later the Herschel experiment) as infrared. ...
... eyes. The scientific discovery that the heat we all feel coming from the Sun is largely a radiation beyond the visible red colour of the solar spectrum was made by William Herschel in 1800. He named the invisible radiation measured by his thermometers (see later the Herschel experiment) as infrared. ...
SPICA Yellow Book
... A complete understanding of the formation and evolution of galaxies, stars and planets can only be reached through the investigation of the cold and obscured parts of the Universe, where the basic processes of formation and evolution occur. Deep exploration of the cold Universe using high spatial re ...
... A complete understanding of the formation and evolution of galaxies, stars and planets can only be reached through the investigation of the cold and obscured parts of the Universe, where the basic processes of formation and evolution occur. Deep exploration of the cold Universe using high spatial re ...
The redshift of extragalactic nebulae
... We must not omit to mention that the above conclusions are only valid in the absence of absorption and scattering of light in space. However, the finding of a uniform distribution of nebulae up to the greatest attainable distances with a method that requires the virtual absence of absorption and sca ...
... We must not omit to mention that the above conclusions are only valid in the absence of absorption and scattering of light in space. However, the finding of a uniform distribution of nebulae up to the greatest attainable distances with a method that requires the virtual absence of absorption and sca ...
Silicon isotopic abundance toward evolved stars and its application
... the local area and raises the pressure, which initiates an expansion and a series of convective and mixing events (Herwig 2005; Iben & Renzini 1983). During the so-called third dredgeup, the products of He burning and the s-process elements are brought to the surface, e.g., 12 C, which can lead to t ...
... the local area and raises the pressure, which initiates an expansion and a series of convective and mixing events (Herwig 2005; Iben & Renzini 1983). During the so-called third dredgeup, the products of He burning and the s-process elements are brought to the surface, e.g., 12 C, which can lead to t ...
PDF only - at www.arxiv.org.
... discrepancy between models, and FIR observations. Future heterodyne receivers will take advantage of the recent progress in Hot Electron Bolometer (HEB) technology, providing higher sensitivity. Together with a larger collecting area compared to Herschel observations of ded ...
... discrepancy between models, and FIR observations. Future heterodyne receivers will take advantage of the recent progress in Hot Electron Bolometer (HEB) technology, providing higher sensitivity. Together with a larger collecting area compared to Herschel observations of ded ...
Michell, Laplace and the Origin of the Black Hole Concept
... that he possessed mathematical gifts, so he abandoned his theological studies and in 1768 moved to Paris. There he came under the watchful eye of d’Alembert, a leading scientist in the French Academy, who obtained for him the appointment of Professor of Mathematics at the École Militaire. Laplace ta ...
... that he possessed mathematical gifts, so he abandoned his theological studies and in 1768 moved to Paris. There he came under the watchful eye of d’Alembert, a leading scientist in the French Academy, who obtained for him the appointment of Professor of Mathematics at the École Militaire. Laplace ta ...
PowerPoint - Herschel Space Observatory
... – The shape of the spectrum is always the same, but the peak wavelength changes with temperature. – But not all objects are black bodies. – Atoms, molecules and electrons emit radiation with a different ...
... – The shape of the spectrum is always the same, but the peak wavelength changes with temperature. – But not all objects are black bodies. – Atoms, molecules and electrons emit radiation with a different ...
Nebulae.The Lagoon and Dumbbell Nebulae
... what draws our attention to them. Scientist like Edwin Hubble and Charles Messier had been attracted to those diffuse objects in the night sky decades ago and due to their curiosity and desire to search and find, now we know a bit more about what the nebulae are. During our work on the project we re ...
... what draws our attention to them. Scientist like Edwin Hubble and Charles Messier had been attracted to those diffuse objects in the night sky decades ago and due to their curiosity and desire to search and find, now we know a bit more about what the nebulae are. During our work on the project we re ...
our knowledge of high-mass star formation at the dawn of - CEA-Irfu
... which a barotropic equation of state (EOS) is used (an isothermal EOS for most of the gas but an adiabatic EOS at high densities). In particular, Krumholz et al. (2007) find that, when the radiative transfer is taken into account, the gas temperature inside the cloud is higher than in the barotropic ...
... which a barotropic equation of state (EOS) is used (an isothermal EOS for most of the gas but an adiabatic EOS at high densities). In particular, Krumholz et al. (2007) find that, when the radiative transfer is taken into account, the gas temperature inside the cloud is higher than in the barotropic ...
Astronomical Geography: An Examination of the Early American
... book included only this short introductory paragraph on planetary satellites: "A satellite, or moon, is a body revolving round a planet, and, in company with the planet, round the sun . Of these there are 18 in our solar system, distributed in the following manner: 1 to Earth ; 4 to Jupiter; 7 to Sa ...
... book included only this short introductory paragraph on planetary satellites: "A satellite, or moon, is a body revolving round a planet, and, in company with the planet, round the sun . Of these there are 18 in our solar system, distributed in the following manner: 1 to Earth ; 4 to Jupiter; 7 to Sa ...
ALMA - ESO
... Most of the radiation emitted by stars is absorbed by dust and re-radiated in the 3 micrometer to 1 mm wavelength range The luminous IR galaxies trace regions where the concentration of galaxies is largest, and trace the formation of large scale structures. ...
... Most of the radiation emitted by stars is absorbed by dust and re-radiated in the 3 micrometer to 1 mm wavelength range The luminous IR galaxies trace regions where the concentration of galaxies is largest, and trace the formation of large scale structures. ...
PPT - University of Waterloo
... medium resolution spectroscopy in 2'x2' • PACS: spectroscopy with velocity resolution of 100-250 km/s and 1300-3000 km/s coverage or imaging with two 25x16 arrays at 80-130 and 130-210 μm simultaneously • HIFI: very high spectral resolution heterodyne spectroscopy spanning 480-1250 and 1410-1910 GHz ...
... medium resolution spectroscopy in 2'x2' • PACS: spectroscopy with velocity resolution of 100-250 km/s and 1300-3000 km/s coverage or imaging with two 25x16 arrays at 80-130 and 130-210 μm simultaneously • HIFI: very high spectral resolution heterodyne spectroscopy spanning 480-1250 and 1410-1910 GHz ...
Chapter 1 The Discovery of Open Clusters - Willmann-Bell
... was obtained by Dr. William Watson, who sent it to his friend William Herschel (1738–1822). Herschel is one of the most remarkable figures in the history of astronomy. Born in Hanover Germany, he moved to England in November 1757; eventually settling in Bath, where he was joined by his sister Caroli ...
... was obtained by Dr. William Watson, who sent it to his friend William Herschel (1738–1822). Herschel is one of the most remarkable figures in the history of astronomy. Born in Hanover Germany, he moved to England in November 1757; eventually settling in Bath, where he was joined by his sister Caroli ...
Uranus
... o Spacecraft voyager2 has visited Uranus to collect information about the planet. o Uranus was the first planet discovered by scientists. o Uranus was discovered accidentally because William Herschel was looking at the stars with his telescope when he spotted Uranus. ...
... o Spacecraft voyager2 has visited Uranus to collect information about the planet. o Uranus was the first planet discovered by scientists. o Uranus was discovered accidentally because William Herschel was looking at the stars with his telescope when he spotted Uranus. ...
MESSIER - EarthLink
... His first own deep sky discovery of globular cluster M3, cataloged on May 3, probably causes him to undertake a systematical search for nebulous objects, leading to the observation and recording of the objects M3-M40, many of which were own discoveries, but several from old catalogs. Messier was mad ...
... His first own deep sky discovery of globular cluster M3, cataloged on May 3, probably causes him to undertake a systematical search for nebulous objects, leading to the observation and recording of the objects M3-M40, many of which were own discoveries, but several from old catalogs. Messier was mad ...
WILLIAM HERSCHEL AND THE `GARNET` STARS: μ CEPHEI AND
... Abstract: Although William Herschel‘s ‗Garnet Star‘ (µ Cephei) is a prominent object, the story of the discovery of this famous red star is not well documented. Prior to and after Herschel, the identification of this star was the subject of confusion in various catalogues and atlases. The case is co ...
... Abstract: Although William Herschel‘s ‗Garnet Star‘ (µ Cephei) is a prominent object, the story of the discovery of this famous red star is not well documented. Prior to and after Herschel, the identification of this star was the subject of confusion in various catalogues and atlases. The case is co ...
Exam 2
... example, some of the heavy elements (such as carbon, nitrogen and oxygen) that form in a star’s core move into its outer layers. The abundance of these elements in a planetary nebula can show how material mixes through the various parts of a star’s interior. The expanding nebula merges with the inte ...
... example, some of the heavy elements (such as carbon, nitrogen and oxygen) that form in a star’s core move into its outer layers. The abundance of these elements in a planetary nebula can show how material mixes through the various parts of a star’s interior. The expanding nebula merges with the inte ...
bode elert johann
... date of 1721 is often given for both maps. This is impossible, for Harris was only 17 at that time. A few sources give 1728 for the southern map, which fits much better. Harris may well have got in contact with Halley before 1725, when Harris left for Vera Cruz to make astronomical observations. He ...
... date of 1721 is often given for both maps. This is impossible, for Harris was only 17 at that time. A few sources give 1728 for the southern map, which fits much better. Harris may well have got in contact with Halley before 1725, when Harris left for Vera Cruz to make astronomical observations. He ...
The Early Evolution of Protostars
... Consequences of Episodicity The connection between Classes and Stages becomes tenuous The luminosity is not an indicator of stellar mass until nuclear burning dominates (Lacc ~ M*dMacc/dt) Stellar ages from tracks may be way off (Baraffe et al. 2009) The initial conditions for planet format ...
... Consequences of Episodicity The connection between Classes and Stages becomes tenuous The luminosity is not an indicator of stellar mass until nuclear burning dominates (Lacc ~ M*dMacc/dt) Stellar ages from tracks may be way off (Baraffe et al. 2009) The initial conditions for planet format ...
Herschel
... Debris discs around ζ2 Ret: excentric structure similar to a ring with a ~100 UA, e ~0.3, Tdust ~ 40 K, Ldust/L* ≈ 10-5 Asymmetry: Caused by a planet?. (Eiroa et al., 2010, A&A, 518, L131, Thebault et al., Faramaz et al., 2014, A&A, 563, 72) ...
... Debris discs around ζ2 Ret: excentric structure similar to a ring with a ~100 UA, e ~0.3, Tdust ~ 40 K, Ldust/L* ≈ 10-5 Asymmetry: Caused by a planet?. (Eiroa et al., 2010, A&A, 518, L131, Thebault et al., Faramaz et al., 2014, A&A, 563, 72) ...
Slide 1
... to extrapolate a position from such a scant amount of data – three degrees represent less than 1% of the total orbit. Gauss, who was 23 at the time, heard about the problem and tackled it head-on. After three months of intense work, he predicted a position for Ceres in December 1801 – just about a y ...
... to extrapolate a position from such a scant amount of data – three degrees represent less than 1% of the total orbit. Gauss, who was 23 at the time, heard about the problem and tackled it head-on. After three months of intense work, he predicted a position for Ceres in December 1801 – just about a y ...
“Crossroads of Astronomy.” Talk about Five Remarkable
... Her dissertation, entitled "Stellar Atmospheres, A Contribution to the Observational Study of High Temperature in the Reversing Layers of Stars." Showed that the great variation in stellar absorption lines was due to different amounts of atomic excitation and ionization (different temperatures), not ...
... Her dissertation, entitled "Stellar Atmospheres, A Contribution to the Observational Study of High Temperature in the Reversing Layers of Stars." Showed that the great variation in stellar absorption lines was due to different amounts of atomic excitation and ionization (different temperatures), not ...
Five Women at the Crossroads of Astronomy - Physics
... into the country and to look at the Milky Way, most of the children would be overwhelmed. When I talk to elementary school and junior high children, I very often begin by asking them if they have ever seen the Milky Way. And the answer in universally no. If we [could] . . . get people to drive 60 mi ...
... into the country and to look at the Milky Way, most of the children would be overwhelmed. When I talk to elementary school and junior high children, I very often begin by asking them if they have ever seen the Milky Way. And the answer in universally no. If we [could] . . . get people to drive 60 mi ...
William Herschel
Frederick William Herschel, KH, FRS (German: Friedrich Wilhelm Herschel; 15 November 1738 – 25 August 1822) was a German-born British astronomer, composer, and brother of Caroline Herschel. Born in the Electorate of Hanover, Herschel followed his father into the Military Band of Hanover, before migrating to Great Britain in 1757 at the age of nineteen.Herschel constructed his first large telescope in 1774, after which he spent nine years carrying out sky surveys to investigate double stars. The resolving power of the Herschel telescopes revealed that the nebulae in the Messier catalogue were clusters of stars. Herschel published catalogues of nebulae in 1802 (2,500 objects) and in 1820 (5,000 objects). In the course of an observation on 13 March 1781 he realized that one celestial body he had observed was not a star, but a planet, Uranus. This was the first planet to be discovered since antiquity and Herschel became famous overnight. As a result of this discovery, George III appointed him Court Astronomer. He was elected as a Fellow of the Royal Society and grants were provided for the construction of new telescopes.Herschel pioneered the use of astronomical spectrophotometry as a diagnostic tool, using prisms and temperature measuring equipment to measure the wavelength distribution of stellar spectra. Other work included an improved determination of the rotation period of Mars, the discovery that the Martian polar caps vary seasonally, the discovery of Titania and Oberon (moons of Uranus) and Enceladus and Mimas (moons of Saturn). In addition, Herschel discovered infrared radiation. Herschel was knighted in 1816. He died in August 1822, and his work was continued by his only son, John Herschel.