PARAMOUNT SCHOOL OF EXCELLENCE TIME AND SPACE
... 2. Begin by discussing the vastness of the universe. For example, tell students that light travels at the unimaginably fast speed of 300 million meters per second, and yet light takes years to travel to us from the stars and takes thousands or even millions of years to travel the depths of space bet ...
... 2. Begin by discussing the vastness of the universe. For example, tell students that light travels at the unimaginably fast speed of 300 million meters per second, and yet light takes years to travel to us from the stars and takes thousands or even millions of years to travel the depths of space bet ...
9J Gravity and Space
... The astrology and mythology of the constellations, especially those of the signs of the zodiac may be enjoyable, but the science behind it isn’t quite the same. Precession: Due to the moon and sun’s pull of gravity, Earth wobbles as it spins. This wobbling is called precession and it's so slow that ...
... The astrology and mythology of the constellations, especially those of the signs of the zodiac may be enjoyable, but the science behind it isn’t quite the same. Precession: Due to the moon and sun’s pull of gravity, Earth wobbles as it spins. This wobbling is called precession and it's so slow that ...
20_LectureOutline
... • When fusion ceases in the core, it begins to collapse and heat. Hydrogen fusion starts in the shell surrounding the core. • The helium core begins to heat up; as long as the star is at least 0.25 solar masses, the helium will get hot enough that fusion (to carbon) will start. • As the core collaps ...
... • When fusion ceases in the core, it begins to collapse and heat. Hydrogen fusion starts in the shell surrounding the core. • The helium core begins to heat up; as long as the star is at least 0.25 solar masses, the helium will get hot enough that fusion (to carbon) will start. • As the core collaps ...
Internal structure of a cold dark molecular cloud inferred
... cannot produce a readily detectable signal under the conditions that characterize cold, dark clouds. The traditional methods used to derive the basic physical properties of such molecular clouds therefore make use of observations of trace H2 surrogates, namely those rare molecules with suf®cient dip ...
... cannot produce a readily detectable signal under the conditions that characterize cold, dark clouds. The traditional methods used to derive the basic physical properties of such molecular clouds therefore make use of observations of trace H2 surrogates, namely those rare molecules with suf®cient dip ...
– 1 – 1. Chemical Evolution 1.1.
... mass distribution, they then derive what they call the integrated galactic mass function, and which is somewhat steeper at the highest masses than a standard power law IMF. Instanteous recycling, that stars die and release their metals very quickly after their birth, is also assumed. The specific si ...
... mass distribution, they then derive what they call the integrated galactic mass function, and which is somewhat steeper at the highest masses than a standard power law IMF. Instanteous recycling, that stars die and release their metals very quickly after their birth, is also assumed. The specific si ...
ASTR1102-002 Potentially useful facts and mathematical relations
... b. The officer relies on a “Doppler shift” measurement. c. The officer measures the apparent brightness of your headlights. d. The officer measures the color of your car. ANS: ...
... b. The officer relies on a “Doppler shift” measurement. c. The officer measures the apparent brightness of your headlights. d. The officer measures the color of your car. ANS: ...
BRC_prop3 - CoolWiki
... learn about the instrumentation used in infrared astronomy and the necessity of space-based telescopes. Students and teachers will use spreadsheet and graphing programs to generate color-color plots and color-magnitude diagrams to determine stellar properties. These activities will be age-appropriat ...
... learn about the instrumentation used in infrared astronomy and the necessity of space-based telescopes. Students and teachers will use spreadsheet and graphing programs to generate color-color plots and color-magnitude diagrams to determine stellar properties. These activities will be age-appropriat ...
The Physics of Massive Star Formation
... It is appealing to explain properties of massive stars in terms of massive cores …but if massive cores fragment to many stars, there is no direct core-star mapping, MF agreement is just a coincidence. Do massive cores fragment? ...
... It is appealing to explain properties of massive stars in terms of massive cores …but if massive cores fragment to many stars, there is no direct core-star mapping, MF agreement is just a coincidence. Do massive cores fragment? ...
Homework #7 (Ch. 19)
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
EvoluGon of high mass stars Solar-‐type stars end their lives by
... Neutron stars These are stars composed almost en=rely of neutrons, with radii ≈ 10 km, leh over aher a core-‐collapse supernova. They are supported against gravita=onal collapse by neutron degeneracy ...
... Neutron stars These are stars composed almost en=rely of neutrons, with radii ≈ 10 km, leh over aher a core-‐collapse supernova. They are supported against gravita=onal collapse by neutron degeneracy ...
Is $^ 6$ Li in metal-poor halo stars produced in situ by solar
... We also assume that the rate of proton acceleration in stellar flares does not depend on metallicity, but only on surface magnetic flux. In solar flares, the particle acceleration processes at work in impulsive events are related to excitation of plasma waves that are essentially independent of the ...
... We also assume that the rate of proton acceleration in stellar flares does not depend on metallicity, but only on surface magnetic flux. In solar flares, the particle acceleration processes at work in impulsive events are related to excitation of plasma waves that are essentially independent of the ...
Lecture 13 - Star Formation
... • Gas in the cloud keeps falling onto the protostar. • The collapsing gas tends to start rotating around the protostar as it falls in forming a disk and a jet. • Eventually, the protostar develops a wind, like the solar wind but ...
... • Gas in the cloud keeps falling onto the protostar. • The collapsing gas tends to start rotating around the protostar as it falls in forming a disk and a jet. • Eventually, the protostar develops a wind, like the solar wind but ...
Measuring Double Stars with a Micrometer and Digital Image
... The observation and measurement of visual double stars is an important area of study in astronomy and astrophysics. This type of observing is an area of research well suited for amateur participation. The amateur can still carry out important scientific work, and make a valuable contribution to astr ...
... The observation and measurement of visual double stars is an important area of study in astronomy and astrophysics. This type of observing is an area of research well suited for amateur participation. The amateur can still carry out important scientific work, and make a valuable contribution to astr ...
the article as PDF - Project VS
... Averagely separated by 25 AU (a distance comparable to Neptune's orbit), a high eccentricity keeps them between 17 and 34 AU apart during the orbital cycle. When the blue star goes in back of the super-giant, the light drop from the binary during an eclipse is approximately 20% less than when both s ...
... Averagely separated by 25 AU (a distance comparable to Neptune's orbit), a high eccentricity keeps them between 17 and 34 AU apart during the orbital cycle. When the blue star goes in back of the super-giant, the light drop from the binary during an eclipse is approximately 20% less than when both s ...
Distance - Fixed Earth
... Quotation: "The Cosmological Redshift is a redshift caused by the expansion of space. The wavelength of light increases as it traverses the expanding universe.... The Gravitational Redshift is a shift in the frequency of a photon to lower energy as it climbs out of a gravitational field...." 16 Com ...
... Quotation: "The Cosmological Redshift is a redshift caused by the expansion of space. The wavelength of light increases as it traverses the expanding universe.... The Gravitational Redshift is a shift in the frequency of a photon to lower energy as it climbs out of a gravitational field...." 16 Com ...
ppt - MIT Haystack Observatory
... interpretation for scaling between Lr and Lx: common energy reservoir out of which both particle acceleration & plasma heating occur ...
... interpretation for scaling between Lr and Lx: common energy reservoir out of which both particle acceleration & plasma heating occur ...
The Life And Times Of A Star
... They have a relationship between mass, temperature, and luminosity: – More massive = bigger (higher R) – More massive = hotter (higher T) – More massive = brighter (higher L) ...
... They have a relationship between mass, temperature, and luminosity: – More massive = bigger (higher R) – More massive = hotter (higher T) – More massive = brighter (higher L) ...
arXiv:1505.07406v1 [hep-ph] 27 May 2015
... makes it possible to solve some issues of LQG and to realize a consistent quantum scenario for FRW models and for its most relevant anisotropic extensions (Bianchi type I [6, 7], II [8] and IX [9]). The most important result of these investigations is that the initial singularity is replaced by a bo ...
... makes it possible to solve some issues of LQG and to realize a consistent quantum scenario for FRW models and for its most relevant anisotropic extensions (Bianchi type I [6, 7], II [8] and IX [9]). The most important result of these investigations is that the initial singularity is replaced by a bo ...
The hawaiian star compass and the unit circle
... a mental model of where islands are located and the star points with which to navigate between them (Thompson, 2005). This mental model often takes years of study to build, but with the help of chants, stories, and even dances, navigators can recall complex relationships of geography and location (T ...
... a mental model of where islands are located and the star points with which to navigate between them (Thompson, 2005). This mental model often takes years of study to build, but with the help of chants, stories, and even dances, navigators can recall complex relationships of geography and location (T ...
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.