Shows` Detail - Nejoum Planetarium
... Comets and Deep Sky Objects objects like Galaxies, VI to VIII Nebulae, and Star Clusters. Thousands of hobbyist astronomers across the world on this day follow the footsteps of Messier and observe the Messier objects in one glorious dusk to dawn observing run called the Messier Marathon. The show co ...
... Comets and Deep Sky Objects objects like Galaxies, VI to VIII Nebulae, and Star Clusters. Thousands of hobbyist astronomers across the world on this day follow the footsteps of Messier and observe the Messier objects in one glorious dusk to dawn observing run called the Messier Marathon. The show co ...
Time From the Perspective of a Particle Physicist
... Stars: Birth, Life and Death • Stars are formed from interstellar material which is compressed by gravity • spend >90% of their lives burning Hydrogen into Helium and on main sequence • how they “die” depends on mass large stars blow up Supernovas • understand stars’ lifecycles by studying their ...
... Stars: Birth, Life and Death • Stars are formed from interstellar material which is compressed by gravity • spend >90% of their lives burning Hydrogen into Helium and on main sequence • how they “die” depends on mass large stars blow up Supernovas • understand stars’ lifecycles by studying their ...
1 Ay 124 Winter 2014 – HOMEWORK #3
... At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc second is 3 × 106 LV . a) Calculate the total mass, and the mass to light ratio, in the inn ...
... At a projected radius of 1 arcsec, stars in the nucleus have a line of sight velocity dispersion of 150 km s−1 , and are also rotating about the nucleus at 150 km s−1 . The total luminosity from within 1 arc second is 3 × 106 LV . a) Calculate the total mass, and the mass to light ratio, in the inn ...
Beers_First_Stars_NIC_School
... W. Aoki, N. Tominaga, T. C. Beers, S. Honda, Y. S. Lee Abstract: Numerical simulations of structure formation in the early Universe predict the formation of some fraction of stars with masses several hundred times the solar mass. No clear evidence of supernovae from such supermassive stars has, howe ...
... W. Aoki, N. Tominaga, T. C. Beers, S. Honda, Y. S. Lee Abstract: Numerical simulations of structure formation in the early Universe predict the formation of some fraction of stars with masses several hundred times the solar mass. No clear evidence of supernovae from such supermassive stars has, howe ...
click here - CAPSTONE 2011
... 1. The average period of a certain asteroid is about 76 years. If it is in a circular orbit, how far is it from the Sun and where does that place it with respect to the orbits of the major planets. (Find the values for the planets in the appendices to the text book.) 2. What is the angular diameter ...
... 1. The average period of a certain asteroid is about 76 years. If it is in a circular orbit, how far is it from the Sun and where does that place it with respect to the orbits of the major planets. (Find the values for the planets in the appendices to the text book.) 2. What is the angular diameter ...
What is Astronomy? - Wayne State University Physics and Astronomy
... other celestial objects and phenomena, like nebulae, and black holes! ...
... other celestial objects and phenomena, like nebulae, and black holes! ...
Chapter 3
... 1. The point in the sky directly overhead. 2. The circle dividing the sky into eastern and western halves. 3. Locate the North Celestial Pole precisely in the Bryan sky. 4. Over what point on Earth is the North Celestial Pole? 5. The Celestial Equator is a circle on the sky that crosses the horizon ...
... 1. The point in the sky directly overhead. 2. The circle dividing the sky into eastern and western halves. 3. Locate the North Celestial Pole precisely in the Bryan sky. 4. Over what point on Earth is the North Celestial Pole? 5. The Celestial Equator is a circle on the sky that crosses the horizon ...
Major Stars of the Orion Constellation
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
... Mars and Jupiter. Due to its closeness and angular diameter, it was one of the first extra solar objects to have its disk diameter measured. “The angular diameter of Betelgeuse was first measured in 1920-1921 by Michelson and Pease using an astronomical interferometer on the Mount Wilson 100 inch te ...
measurements of stellar magnitudes and colors
... button in order to prepare for photometry. You should see a box appear underneath the Calibrate button with several selections that we will later use to calibrate the program. 3.1.2 How to do Photometry You will be doing DIFFERENTIAL PHOTOMETRY on this cluster of star ...
... button in order to prepare for photometry. You should see a box appear underneath the Calibrate button with several selections that we will later use to calibrate the program. 3.1.2 How to do Photometry You will be doing DIFFERENTIAL PHOTOMETRY on this cluster of star ...
How it works:
... because it contains the brightest star in the high eastern sky, called Vega! Once you have found Vega, look for a faint parallelogram to the lower right of it. Together, these five stars make up Lyra. ...
... because it contains the brightest star in the high eastern sky, called Vega! Once you have found Vega, look for a faint parallelogram to the lower right of it. Together, these five stars make up Lyra. ...
Black Hole
... interior is balanced by the outflow of energy to the surface, and the inwarddirected gravitational forces are balanced by the outward-directed gas and ...
... interior is balanced by the outflow of energy to the surface, and the inwarddirected gravitational forces are balanced by the outward-directed gas and ...
THE 3-D UNIVERSE CONCEPTS
... luminosity, astronomers turn to clues contained in its “light fingerprint,” or spectrum. By analyzing a star’s spectrum, astronomers can determine its temperature. For the vast majority of stars, the temperature of the star is directly linked to its luminosity. This lets astronomers estimate the sta ...
... luminosity, astronomers turn to clues contained in its “light fingerprint,” or spectrum. By analyzing a star’s spectrum, astronomers can determine its temperature. For the vast majority of stars, the temperature of the star is directly linked to its luminosity. This lets astronomers estimate the sta ...
Document
... lines of a binary star system. Among the broad lines that shift as the two stars orbit each other, you see narrow lines that do not move. The narrow lines are from much colder gas in the interstellar medium between us and the binary system. “ from Nick Strobel’s Astronomy Notes. As was mentioned pre ...
... lines of a binary star system. Among the broad lines that shift as the two stars orbit each other, you see narrow lines that do not move. The narrow lines are from much colder gas in the interstellar medium between us and the binary system. “ from Nick Strobel’s Astronomy Notes. As was mentioned pre ...
The Helix Nebula • NGC 7293
... tentacles have been observed from ground-based telescopes for decades, but never have they been seen in such detail. They may actually lie in a disk encircling the hot star. The Helix, located 650 light-years away, is one of the closest planetary nebulae to Earth. This glowing gas cloud appears very ...
... tentacles have been observed from ground-based telescopes for decades, but never have they been seen in such detail. They may actually lie in a disk encircling the hot star. The Helix, located 650 light-years away, is one of the closest planetary nebulae to Earth. This glowing gas cloud appears very ...
PHY111 Stellar Evolution
... eventually (if it gets hot enough) a new fusion process will ignite in core ...
... eventually (if it gets hot enough) a new fusion process will ignite in core ...
How do stars appear to move to an observer on the
... Distance is measured using a process known as parallax ...
... Distance is measured using a process known as parallax ...
formation1
... • This pocket of over density is much bigger than a single star. • This over dense region is not uniform, but has within it other, smaller regions of high density. • As the over density begins to be drawn together by gravity, it fragments into smaller pockets of gas which go on to form individual st ...
... • This pocket of over density is much bigger than a single star. • This over dense region is not uniform, but has within it other, smaller regions of high density. • As the over density begins to be drawn together by gravity, it fragments into smaller pockets of gas which go on to form individual st ...
Issue 122 - Aug 2014
... slightly hotter than the Sun) that is just starting to evolve off of the main sequence. The secondary star is a G-type (yellow, 5,300K) main sequence star very similar to our Sun. This star orbits the primary at about 15 AU (1.3 arc seconds as seen from the Earth) with an orbital period ~34.5 years. ...
... slightly hotter than the Sun) that is just starting to evolve off of the main sequence. The secondary star is a G-type (yellow, 5,300K) main sequence star very similar to our Sun. This star orbits the primary at about 15 AU (1.3 arc seconds as seen from the Earth) with an orbital period ~34.5 years. ...
apparent retrograde motion - Indiana University Astronomy
... Predictions were not much better than those of Ptolemy ...
... Predictions were not much better than those of Ptolemy ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.