The Great Nebula in Orion
... temperature and luminosity. From these measurements, we can determine the radius, mass, age, and even the mass accretion rate of each star. This catalog of stellar properties will be the largest uniform survey of young stars ever achieved. The Hubble images reveal dozens of candidates for brown dwar ...
... temperature and luminosity. From these measurements, we can determine the radius, mass, age, and even the mass accretion rate of each star. This catalog of stellar properties will be the largest uniform survey of young stars ever achieved. The Hubble images reveal dozens of candidates for brown dwar ...
27B Star Life Cycle and the HR Diagram
... 27B Star Life Cycle and the H-R Diagram How can we use an H-R diagram to know where a star is in its life cycle? Just like humans, stars go through a life cycle. Over the course of their lives, stars change in ways that make each stage different and recognizable. A useful way to organize this inform ...
... 27B Star Life Cycle and the H-R Diagram How can we use an H-R diagram to know where a star is in its life cycle? Just like humans, stars go through a life cycle. Over the course of their lives, stars change in ways that make each stage different and recognizable. A useful way to organize this inform ...
Chemical Universe. - University of Texas Astronomy
... at the heart of the nebula, becomes a white dwarf — a ball of matter only about as big as Earth, but containing most of the star’s mass. It no longer produces energy through nuclear reactions, but shines through the heat built up during its long life. This will be the Sun’s fate. More massive stars, ...
... at the heart of the nebula, becomes a white dwarf — a ball of matter only about as big as Earth, but containing most of the star’s mass. It no longer produces energy through nuclear reactions, but shines through the heat built up during its long life. This will be the Sun’s fate. More massive stars, ...
6 - In the Beginning: Science and Genesis 1-11
... Seven of the eight planets of our solar system follow highly circular orbits, despite the fact that NASA must plan with great precision to put a satellite into a nearly circular orbit and have difficulty keeping it there very long. Modern theories predict our planets should have developed abnormali ...
... Seven of the eight planets of our solar system follow highly circular orbits, despite the fact that NASA must plan with great precision to put a satellite into a nearly circular orbit and have difficulty keeping it there very long. Modern theories predict our planets should have developed abnormali ...
Lecture 10
... is the most stable isotope. Reactions can release energy only below 56Fe. When temperature in core ~ 7 109 °K, 56Fe photodisintegrates: 56Fe Æ 13 4He + 4 n taking 100 MeV of energy! (At higher temperature, higher S is favored) This cools the core very quickly and it collapses. ...
... is the most stable isotope. Reactions can release energy only below 56Fe. When temperature in core ~ 7 109 °K, 56Fe photodisintegrates: 56Fe Æ 13 4He + 4 n taking 100 MeV of energy! (At higher temperature, higher S is favored) This cools the core very quickly and it collapses. ...
PPT
... Galaxy survey (106-107 resolved at 0.1´´ in four bands, 0.5´´ in 11 bands) ~500,000 quasars: kinematic and photometric detection ...
... Galaxy survey (106-107 resolved at 0.1´´ in four bands, 0.5´´ in 11 bands) ~500,000 quasars: kinematic and photometric detection ...
H-R Diagram
... their immense internal energy into space as they continue on their journey to become black dwarfs. • When they reach 4000 K these bizarre stellar objects must start to crystallize. The time this requires is very long. In fact, no white dwarf generated has yet had enough time to cool to a black dwarf ...
... their immense internal energy into space as they continue on their journey to become black dwarfs. • When they reach 4000 K these bizarre stellar objects must start to crystallize. The time this requires is very long. In fact, no white dwarf generated has yet had enough time to cool to a black dwarf ...
Unit 3 - Section 8.9 Life of Stars
... In the core of the Red Giant, helium fuses into carbon. All stars evolve the same way to the Red Giant phase. The amount of mass a star has determines which life cycle path it will follow: Low Mass Star or High Mass Star. Low Mass Star After the helium has fused into carbon, the core collapses ...
... In the core of the Red Giant, helium fuses into carbon. All stars evolve the same way to the Red Giant phase. The amount of mass a star has determines which life cycle path it will follow: Low Mass Star or High Mass Star. Low Mass Star After the helium has fused into carbon, the core collapses ...
Part I Light, Telescopes, Atoms and Stars
... Hipparcos satellite = .001 sec of arc = one million measured stars ...
... Hipparcos satellite = .001 sec of arc = one million measured stars ...
Luminosity
... —If we measure a star’s apparent brightness and distance, we can compute its luminosity with the inverse square law for light. —Parallax tells us distances to the nearest stars. ...
... —If we measure a star’s apparent brightness and distance, we can compute its luminosity with the inverse square law for light. —Parallax tells us distances to the nearest stars. ...
Ch13_Lecture - Chemistry at Winthrop University
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
Globular Clusters Dynamic Lives The
... within the tidal field of the Milky Way — that is, within its uneven and ever-changing gravitational influence. As clusters pass through the galactic bulge or the disk, they are subject to so-called tidal shocks, in which tides suddenly increase or decrease in strength. These shocks, originally inve ...
... within the tidal field of the Milky Way — that is, within its uneven and ever-changing gravitational influence. As clusters pass through the galactic bulge or the disk, they are subject to so-called tidal shocks, in which tides suddenly increase or decrease in strength. These shocks, originally inve ...
PowerPoint Presentation - Properties of Stars
... opening and closing each eye until you can no longer detect any parallax. How far did your partner get? Questions: a) How does parallax vary with distance of the pen from your face? b) Is this method useful for finding distances to very far away things? Why or why not? c) To measure a parallax, you ...
... opening and closing each eye until you can no longer detect any parallax. How far did your partner get? Questions: a) How does parallax vary with distance of the pen from your face? b) Is this method useful for finding distances to very far away things? Why or why not? c) To measure a parallax, you ...
mars, antares, the sting and more
... JAMES: NOW THAT WEVE INVESTIGATED THE HEART OF THE SCORPION, HOW ABOUT HIS TAIL? AT THE END OF THE FISHHOOK SHAPE, LOOK FOR TWO STARS THAT ARE VERY CLOSE TOGETHER. THESE ARE THE STARS SHAULA AND LESATH AND TOGETHER THEY ARE KNOWN AS, THE STING. DEAN: MAKES SENSE. ALTHOUGH THESE TWO STARS LOOK CLOSE ...
... JAMES: NOW THAT WEVE INVESTIGATED THE HEART OF THE SCORPION, HOW ABOUT HIS TAIL? AT THE END OF THE FISHHOOK SHAPE, LOOK FOR TWO STARS THAT ARE VERY CLOSE TOGETHER. THESE ARE THE STARS SHAULA AND LESATH AND TOGETHER THEY ARE KNOWN AS, THE STING. DEAN: MAKES SENSE. ALTHOUGH THESE TWO STARS LOOK CLOSE ...
Astronomy Worksheet
... allows you to precisely determine the x, y coordinates of any point along the graph by simply dragging the black line to the desired place. The x position is wavelength in Angstroms, and the y position is flux. Another useful feature is the zoom tool. To magnify a section of the graph, click and dra ...
... allows you to precisely determine the x, y coordinates of any point along the graph by simply dragging the black line to the desired place. The x position is wavelength in Angstroms, and the y position is flux. Another useful feature is the zoom tool. To magnify a section of the graph, click and dra ...
"Stars" Power Point notes
... Star Brightness • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
... Star Brightness • Apparent magnitude is the apparent brightness of a star as measured on Earth. - Apparent magnitude depends on the star’s actual brightness and distance. - The smaller the magnitude number, the brighter the star. (http://spaceweather.com/flybys ) ...
1/20/09 301 Physics Chapter 12 The Family of Stars Triangulation
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
The galactic metallicity gradient Martín Hernández, Nieves Leticia
... makes ultra-compact H II regions the brightest and most luminous objects in our Galaxy at infrared wavelengths and thus, easily observed in this wavelength range. The new O and B stars continue to power the expansion of the H II regions still farther into the giant molecular cloud. At some point, ei ...
... makes ultra-compact H II regions the brightest and most luminous objects in our Galaxy at infrared wavelengths and thus, easily observed in this wavelength range. The new O and B stars continue to power the expansion of the H II regions still farther into the giant molecular cloud. At some point, ei ...
Chapter 16
... 1. Observations in the early part of the 20th century revealed that the center of the Galaxy lies in the direction of Sagittarius. 2. Because the presence of dust and gas in the Galactic plane dims visible light from the nucleus, it wasn’t until the development of IR/radio and X-ray/gamma-ray astron ...
... 1. Observations in the early part of the 20th century revealed that the center of the Galaxy lies in the direction of Sagittarius. 2. Because the presence of dust and gas in the Galactic plane dims visible light from the nucleus, it wasn’t until the development of IR/radio and X-ray/gamma-ray astron ...
Triangulation Trigonometric Parallax
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
charts_set_8
... 3. Gravitational Time Dilation Direct consequence of the redshift. Observers disagree on rate of time passage, depending on strength of gravity they’re in. ...
... 3. Gravitational Time Dilation Direct consequence of the redshift. Observers disagree on rate of time passage, depending on strength of gravity they’re in. ...
Astronomers Find Extremely Large Planet
... Interestingly, these newly discovered silhouette disks are located in several dense clusters composed of hundreds of young forming stars. The fact that the FLAMINGOS survey only found silhouette disks in clusters and not peppered thoughout the immense volume of the molecular clouds supports the poin ...
... Interestingly, these newly discovered silhouette disks are located in several dense clusters composed of hundreds of young forming stars. The fact that the FLAMINGOS survey only found silhouette disks in clusters and not peppered thoughout the immense volume of the molecular clouds supports the poin ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.