Nebulae - Innovative Teachers BG
... dimensions of 1-2 light years away, in which center recides a hot star. Due to the decreasing density of the expanding matter with typical velocities of several kilometers per second the stellar envelope gets less Ring Nebula prominent with years and for observation and study one needed more powerfu ...
... dimensions of 1-2 light years away, in which center recides a hot star. Due to the decreasing density of the expanding matter with typical velocities of several kilometers per second the stellar envelope gets less Ring Nebula prominent with years and for observation and study one needed more powerfu ...
THREE INTRIGUER NEBULAE IN CONSTELLATION CARINA
... (Hopp & Materne 1985, Nakazawa et al. 2000) that is the third nearest galaxy cluster to us, inhabiting the eastern part of this constellation (see picture on first page). Antlia cluster, also known as ACO S 0636, is centered at R.A. 10h 30m 01s Dec. –35° 19´ 35”. With a galactic latitude of 19 degr ...
... (Hopp & Materne 1985, Nakazawa et al. 2000) that is the third nearest galaxy cluster to us, inhabiting the eastern part of this constellation (see picture on first page). Antlia cluster, also known as ACO S 0636, is centered at R.A. 10h 30m 01s Dec. –35° 19´ 35”. With a galactic latitude of 19 degr ...
31-2 - Fremont Peak Observatory
... huge object in absolute terms. Eventually the debris generated by this explosion will be incorporated into new bright nebulae which, in turn, will form new star systems. This will continue the process. The stuff that we are made of was, at one point, in a supernova (or Planetary nebula). ...
... huge object in absolute terms. Eventually the debris generated by this explosion will be incorporated into new bright nebulae which, in turn, will form new star systems. This will continue the process. The stuff that we are made of was, at one point, in a supernova (or Planetary nebula). ...
Frontiers of Astronomy. Fred Hoyle. The Expanding Universe
... wasn't created that way. Indeed the Universe might have been created in any of an infinity of other ways but it wasn't. It was created to have just the properties of expansion and of uniformity that we observe. If we ask why so, no answer can be given. At the time of creation the density of material ...
... wasn't created that way. Indeed the Universe might have been created in any of an infinity of other ways but it wasn't. It was created to have just the properties of expansion and of uniformity that we observe. If we ask why so, no answer can be given. At the time of creation the density of material ...
The Milky Way: Cartoon
... Recap: Gravitational Lensing: positions of background stars will change when observed along a sight-line near a massive object. Like the sun. Observation of apparent change in star positions during a solar eclipse (when we can see close to the sun) in 1919 was a first proof of General Relativity. ...
... Recap: Gravitational Lensing: positions of background stars will change when observed along a sight-line near a massive object. Like the sun. Observation of apparent change in star positions during a solar eclipse (when we can see close to the sun) in 1919 was a first proof of General Relativity. ...
Slide 1
... of their light curve. The study of the period changes in these variable stars will not only reveal the action (or not) of physical processes such as thermal pulses, magnetism, convection . . . etc via the observation of stable or unstable behavior in the long run, but also we could be able to notice ...
... of their light curve. The study of the period changes in these variable stars will not only reveal the action (or not) of physical processes such as thermal pulses, magnetism, convection . . . etc via the observation of stable or unstable behavior in the long run, but also we could be able to notice ...
Dynamics
... reflect the forces that act between its component stars in the same way that the structure of a crystal reflects the nature of interatomic forces. Galaxies and crystals have strongly contrasting large-scale properties because a galaxy is held together by a force that has very different properties fr ...
... reflect the forces that act between its component stars in the same way that the structure of a crystal reflects the nature of interatomic forces. Galaxies and crystals have strongly contrasting large-scale properties because a galaxy is held together by a force that has very different properties fr ...
Practical cosmology with the Local Volume galaxies
... premised by Allan Sandage (1988) to his «Atlas of Galaxies Useful for Measuring the Cosmological Distance Scale» contemplated as the first collection of targets for the Hubble Space Telescope (HST). At that time, just 20 years ago, there were known about 180 nearby galaxies with expected distances l ...
... premised by Allan Sandage (1988) to his «Atlas of Galaxies Useful for Measuring the Cosmological Distance Scale» contemplated as the first collection of targets for the Hubble Space Telescope (HST). At that time, just 20 years ago, there were known about 180 nearby galaxies with expected distances l ...
Globular and Open Clusters in our Galaxy
... generations of stars formed in our Galaxy. Therefore all globular clusters must be very old. Since all the stars in a cluster are essentially at the same distance, their relative apparent magnitudes also correspond to their relative physical luminosities. Figure 4 depicts the color-magnitude diagram ...
... generations of stars formed in our Galaxy. Therefore all globular clusters must be very old. Since all the stars in a cluster are essentially at the same distance, their relative apparent magnitudes also correspond to their relative physical luminosities. Figure 4 depicts the color-magnitude diagram ...
The Sights of the Deep Sky - Peterborough Astronomical Society
... Moon in detail for decades and still never tire of its stark beauty, and professional and amateur astronomers continue to study the history of our solar system as written into its rocky face. At about 1/4 the diameter of the Earth and some 250,000 miles away, the Moon spans just a tiny slice of sky, ...
... Moon in detail for decades and still never tire of its stark beauty, and professional and amateur astronomers continue to study the history of our solar system as written into its rocky face. At about 1/4 the diameter of the Earth and some 250,000 miles away, the Moon spans just a tiny slice of sky, ...
key for the HR Diagram Lab Handout
... questions about what they are seeing before getting to the answers! Many students will focus on color and be surprised that stars come in so many. These observations will likely also include temperature, brightness, and lifespan information. If your students are not familiar with or confident in sci ...
... questions about what they are seeing before getting to the answers! Many students will focus on color and be surprised that stars come in so many. These observations will likely also include temperature, brightness, and lifespan information. If your students are not familiar with or confident in sci ...
Activities
... from Earth. Most solar activity is caused by magnetic fields on the Sun. There is a large magnetic field that runs through the entire Sun and also many smaller magnetic fields that are tangled with the hot, convective plasma at the Sun’s surface. In the first part of this activity, you’ll measure th ...
... from Earth. Most solar activity is caused by magnetic fields on the Sun. There is a large magnetic field that runs through the entire Sun and also many smaller magnetic fields that are tangled with the hot, convective plasma at the Sun’s surface. In the first part of this activity, you’ll measure th ...
Gemini = برج الجوزاء (May 22
... of a cluster of stars called the Hyades — the second-closest star cluster to Earth. It consists of several hundred stars that lie about 130 light-years away. • Aldebaran outshines all the other stars that outline the bull's face. But Aldebaran isn't a member of the Hyades cluster — it just lies in t ...
... of a cluster of stars called the Hyades — the second-closest star cluster to Earth. It consists of several hundred stars that lie about 130 light-years away. • Aldebaran outshines all the other stars that outline the bull's face. But Aldebaran isn't a member of the Hyades cluster — it just lies in t ...
Mystic nebula
... • Made of light and gases • 21 light years wide on average • Irregular shapes of gas and light • -272 degrees Celsius • Only one degrees above zero ...
... • Made of light and gases • 21 light years wide on average • Irregular shapes of gas and light • -272 degrees Celsius • Only one degrees above zero ...
High Resolution Spectroscopy of Stars with GMTNIRS
... CO = 1 in M, = 2 in K, = 3 in H CN Red system in JHK OH = 1 in L, = 2 in H NH = 1 in L ...
... CO = 1 in M, = 2 in K, = 3 in H CN Red system in JHK OH = 1 in L, = 2 in H NH = 1 in L ...
Chapter 15: The Milky Way Galaxy
... How many stars does the Milky Way Galaxy contain? The Milky Way has about 200 billion stars. Where is our solar system located in the Milky Way Galaxy? The solar system is between the Sagittarius and Perseus spiral arms about 26,000 ly from the center of the Galaxy. Is the Sun moving through the Mil ...
... How many stars does the Milky Way Galaxy contain? The Milky Way has about 200 billion stars. Where is our solar system located in the Milky Way Galaxy? The solar system is between the Sagittarius and Perseus spiral arms about 26,000 ly from the center of the Galaxy. Is the Sun moving through the Mil ...
Fundamentals of Surveying
... instruments. They were bulky, heavy and expensive. The typical EDM today uses the electro-optical principle. They are small, reasonably light weight, highly accurate, but still expensive. ...
... instruments. They were bulky, heavy and expensive. The typical EDM today uses the electro-optical principle. They are small, reasonably light weight, highly accurate, but still expensive. ...
The Search for New “r-process-Enhanced” Metal
... • Astronomers need to “fill out the phase space” of variations in r-process enhanced stars • This requires discovery of as many additional examples of the phenomenon as possible • A dedicated survey effort is underway, making use of the world’s largest telescopes • However, they are VERY rare - 3% o ...
... • Astronomers need to “fill out the phase space” of variations in r-process enhanced stars • This requires discovery of as many additional examples of the phenomenon as possible • A dedicated survey effort is underway, making use of the world’s largest telescopes • However, they are VERY rare - 3% o ...
Methods of Determining Relative Age of Young Stellar Objects
... Stars should become less emissive as they age, because the nebulae surrounding them should dissipate and they should become more stable. Initially, in order to rank by age based on this concept, all emission lines in the spectra were reviewed and stars were ordered with the most emission lines indic ...
... Stars should become less emissive as they age, because the nebulae surrounding them should dissipate and they should become more stable. Initially, in order to rank by age based on this concept, all emission lines in the spectra were reviewed and stars were ordered with the most emission lines indic ...
Photometry of star clusters with SalsaJ - Eu-Hou
... telescope and CCD camera (or photographic plate), this is known as an ‘instrumental magnitude’. It’s the most basic value for the magnitude that you can measure and it can’t be compared to other people’s measurements of magnitudes since, as the name suggests, this type of magnitude value depends upo ...
... telescope and CCD camera (or photographic plate), this is known as an ‘instrumental magnitude’. It’s the most basic value for the magnitude that you can measure and it can’t be compared to other people’s measurements of magnitudes since, as the name suggests, this type of magnitude value depends upo ...
Why Study Cosmic Near Infrared Background? (1-4um)
... background cannot originate from high-z galaxies, because such galaxies are not seen in high-z galaxy surveys. ...
... background cannot originate from high-z galaxies, because such galaxies are not seen in high-z galaxy surveys. ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.