SBA_2 - Armagh Observatory
... collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of error, and that error b ...
... collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of error, and that error b ...
Where do elements come from?
... balls of gas (plasma) full of energy and are held together by gravity • Everything is made from the elements created in massive stars. Stars are huge factories producing the elements found in the Universe. ...
... balls of gas (plasma) full of energy and are held together by gravity • Everything is made from the elements created in massive stars. Stars are huge factories producing the elements found in the Universe. ...
4. Stars and resolved stellar populations
... studies with other optical instruments: Wide-field spectro-imaging of HH flows with a FabryPerot (see e.g. Morse et al. 1994) is typically limited to 3 lines only (usually [S II] 6716,6731 and Hα) due to the time overhead for stepping through each line profile, which severely limits the physical dia ...
... studies with other optical instruments: Wide-field spectro-imaging of HH flows with a FabryPerot (see e.g. Morse et al. 1994) is typically limited to 3 lines only (usually [S II] 6716,6731 and Hα) due to the time overhead for stepping through each line profile, which severely limits the physical dia ...
Powerpoint Presentation (large file)
... This mass transfer can affect the evolutionary history of the stars that make up the binary system ...
... This mass transfer can affect the evolutionary history of the stars that make up the binary system ...
Bagnulo_2 - Armagh Observatory
... counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of ...
... counts, and that having collected 106 electrons or more in a spectral bin is sufficient to guarantee the reliability of our measurements. In other words, once an instrument has been successfully commissioned and offered to the community, we all tend to believe that photon-noise is the only source of ...
3D Reconstruction and Visualization of Spiral Galaxies
... physical processes of their formation. The basic idea is to use astronomical image data and symmetric structural constraints of the nebulae to reconstruct the threedimensional volume by an analysis-by-synthesis approach. They introduced the term constraint inverse volumetric rendering (CIVR) as a GP ...
... physical processes of their formation. The basic idea is to use astronomical image data and symmetric structural constraints of the nebulae to reconstruct the threedimensional volume by an analysis-by-synthesis approach. They introduced the term constraint inverse volumetric rendering (CIVR) as a GP ...
AS 713 Spectroscopy in Astrophysics Fall 2014
... This course presents the physical basis for spectroscopic measurements in astronomy. We will therefore cover elementary quantum mechanics, to see where the energy levels come from, and statistical mechanics, to see what determines the strength of a spectral line. Armed with our copious knowledge, we ...
... This course presents the physical basis for spectroscopic measurements in astronomy. We will therefore cover elementary quantum mechanics, to see where the energy levels come from, and statistical mechanics, to see what determines the strength of a spectral line. Armed with our copious knowledge, we ...
Macro\micro
... At this tremendous distance we could see all the Via-Láctea & other galáxies too... ...
... At this tremendous distance we could see all the Via-Láctea & other galáxies too... ...
Animated Planets PowerPoint Presentation
... Faye is 7.55 years Its next perihelion will occur on May 29, 2014. During this next appearance, its apparent magnitude is expected to be around 12. The appearance of Comet Faye will come a few short months after what many expected to be one of the brightest comets in history, Comet ISON. ...
... Faye is 7.55 years Its next perihelion will occur on May 29, 2014. During this next appearance, its apparent magnitude is expected to be around 12. The appearance of Comet Faye will come a few short months after what many expected to be one of the brightest comets in history, Comet ISON. ...
DQ_IN_08_25_2006
... it must have (6) cleared the area of other objects around its orbit. That is where Pluto fails: its orbit around the sun crosses paths with Neptune's. American Clyde Tombaugh discovered Pluto in nineteen thirty. People have long debated about considering it the ninth planet in our solar system. Now ...
... it must have (6) cleared the area of other objects around its orbit. That is where Pluto fails: its orbit around the sun crosses paths with Neptune's. American Clyde Tombaugh discovered Pluto in nineteen thirty. People have long debated about considering it the ninth planet in our solar system. Now ...
How the Universe reveals itself
... place of great turmoil, it is not a place of stagnation either. Even in this seemingly desolate space, many interactions occur, often in very significant ways. ...
... place of great turmoil, it is not a place of stagnation either. Even in this seemingly desolate space, many interactions occur, often in very significant ways. ...
1. Neutron stars 2. Black holes
... This cycle repeats many times depending on mass. When it does, at each new stage heavier elements are created. ...
... This cycle repeats many times depending on mass. When it does, at each new stage heavier elements are created. ...
April11
... temperature to soar, and this allows carbon and oxygen to begin to fuse into silicon • The energy released by this fusion blows the star apart in a Type 1a supernova ...
... temperature to soar, and this allows carbon and oxygen to begin to fuse into silicon • The energy released by this fusion blows the star apart in a Type 1a supernova ...
Lecture 25
... The Universe appears to be fine-tuned for life (us). If the parameters of the Universe (e.g., the force of gravity) were only slightly different, stars and galaxies would not form, and we would not be here. The Anthropic Principle states that the Universe appears fine-tuned to us, because we are her ...
... The Universe appears to be fine-tuned for life (us). If the parameters of the Universe (e.g., the force of gravity) were only slightly different, stars and galaxies would not form, and we would not be here. The Anthropic Principle states that the Universe appears fine-tuned to us, because we are her ...
Across 2. a slightly cooler region on the surface of the sun, caused
... mars has large _____________ that can cover the entire planet for months ...
... mars has large _____________ that can cover the entire planet for months ...
Mapping the Universe - Tufts Institute of Cosmology
... tens of yards. In randomly picking out deer in the forest, you would notice that you are much more likely to find another deer a few yards away than a few hundred yards away. The correlation function would show a strong positive signal on the scale of a few tens of yards and a weak or negative signa ...
... tens of yards. In randomly picking out deer in the forest, you would notice that you are much more likely to find another deer a few yards away than a few hundred yards away. The correlation function would show a strong positive signal on the scale of a few tens of yards and a weak or negative signa ...
Stars - Science
... are red. Medium temperature stars are orange and yellow. The hottest stars are blue. ...
... are red. Medium temperature stars are orange and yellow. The hottest stars are blue. ...
Lecture102102 - FSU High Energy Physics
... The light put out by stars contains absorption lines ...
... The light put out by stars contains absorption lines ...
Deep Space Mystery Note Form 2
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.