Tour the sky`s reddest stars
... of stars by their spectral types, was so impressed with Y CVn that he called it “La Superba.” Scientists study a star’s spectrum by measuring the intensity of its light at different wavelengths. The standard spectral classes assign letters to stars based on their temperatures. From hottest to cooles ...
... of stars by their spectral types, was so impressed with Y CVn that he called it “La Superba.” Scientists study a star’s spectrum by measuring the intensity of its light at different wavelengths. The standard spectral classes assign letters to stars based on their temperatures. From hottest to cooles ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
... clusters when a cold giant molecular cloud collapses under its own gravitational force. If many stars form all at once—that is, if star formation efficiency is high—they will stay together as a gravitationally bound open cluster (like the Pleiades) or a globular cluster (like M13 in Hercules). For m ...
Oct5
... * Most carbon, oxygen comes from low-mass red giant winds * Most of the heavy elements come from supernovae * New stars form out of interstellar gas which has been enriched with elements by red giant winds, planetary nebulae and supernovae. * Older stars on the main sequence have relatively fewer at ...
... * Most carbon, oxygen comes from low-mass red giant winds * Most of the heavy elements come from supernovae * New stars form out of interstellar gas which has been enriched with elements by red giant winds, planetary nebulae and supernovae. * Older stars on the main sequence have relatively fewer at ...
the heavens revealed - Chapin Library
... Alfonso X “the Wise” of Leon and Castile. Their starting point is May , the eve of the king’s coronation. Based on Ptolemy’s nd-century Almagest with certain mathematical refinements, and following the general format of tables by the th-century Cordoban astronomer al-Zarqali, the Alfonsine ...
... Alfonso X “the Wise” of Leon and Castile. Their starting point is May , the eve of the king’s coronation. Based on Ptolemy’s nd-century Almagest with certain mathematical refinements, and following the general format of tables by the th-century Cordoban astronomer al-Zarqali, the Alfonsine ...
Physics- HSC- Module 9.7 Astrophysics
... Parallax uses the diameter of Earth's orbit as the known distance. The angles a and b are measured when the Earth is at opposite position in its orbit (i.e. the measurements are taken 6 months apart). ...
... Parallax uses the diameter of Earth's orbit as the known distance. The angles a and b are measured when the Earth is at opposite position in its orbit (i.e. the measurements are taken 6 months apart). ...
Polaris – Distance to Pole
... • Why was Kepler so sure that Tycho Brahe’s data are accurate to better than a few arcminutes ? ...
... • Why was Kepler so sure that Tycho Brahe’s data are accurate to better than a few arcminutes ? ...
The Early Evolution of Protostars
... Consequences of Episodicity The connection between Classes and Stages becomes tenuous The luminosity is not an indicator of stellar mass until nuclear burning dominates (Lacc ~ M*dMacc/dt) Stellar ages from tracks may be way off (Baraffe et al. 2009) The initial conditions for planet format ...
... Consequences of Episodicity The connection between Classes and Stages becomes tenuous The luminosity is not an indicator of stellar mass until nuclear burning dominates (Lacc ~ M*dMacc/dt) Stellar ages from tracks may be way off (Baraffe et al. 2009) The initial conditions for planet format ...
Black holes - Penn State Department of Astronomy and Astrophysics
... DE = 4.3x1017 erg = 12,000 kWh . Maximum-efficiency fusion in a star (turns it all to iron): DE = 4.1x1024 erg = 1.1x1014 kWh . And, for something we can calculate in AST 102, Convert all of its rest mass (m0) to energy (m0c2): ...
... DE = 4.3x1017 erg = 12,000 kWh . Maximum-efficiency fusion in a star (turns it all to iron): DE = 4.1x1024 erg = 1.1x1014 kWh . And, for something we can calculate in AST 102, Convert all of its rest mass (m0) to energy (m0c2): ...
Resume
... TIFR 100 cm Far-Infrared Balloon-borne Telescope was mostly observed in the sky chopped mode. However, more sensitive observations can be done in the fast spectral scan mode where sky chopping is not done. I developed a wavelet based signal processing step for the un-chopped signal from the optical ...
... TIFR 100 cm Far-Infrared Balloon-borne Telescope was mostly observed in the sky chopped mode. However, more sensitive observations can be done in the fast spectral scan mode where sky chopping is not done. I developed a wavelet based signal processing step for the un-chopped signal from the optical ...
Chapter 10: The Interstellar Medium - Otto
... Blue light is strongly scattered and absorbed by interstellar clouds. Red light can more easily penetrate the ...
... Blue light is strongly scattered and absorbed by interstellar clouds. Red light can more easily penetrate the ...
... the Cartwheel Galaxy. It is a small ring galaxy, with faint spokelike features that radiate from a bight nucleus. The Cartwheel has 2 companion galaxies, one of which is the cause of the amazing appearance of this galaxy. This object is very faint even through a 30cm aperture telescope and the compa ...
Evolution of High
... The degenerate pressure of electrons in the inert iron core cannot support the star against the pull of gravity only briefly, due to the high mass of the star. In an instant, electrons are force to combine with the protons in the iron nuclei to form neutrons, releasing neutrinos in the process. • Th ...
... The degenerate pressure of electrons in the inert iron core cannot support the star against the pull of gravity only briefly, due to the high mass of the star. In an instant, electrons are force to combine with the protons in the iron nuclei to form neutrons, releasing neutrinos in the process. • Th ...
Feb 2015 - Bays Mountain Park
... primary duty involved communications with ground control. At some point during the long, grueling day, a short circuit sparked one of the wires in the capsule. This spark eventually led to a raging fire in the 100% high pressure oxygen conditions in the spacecraft. In less than a minute, the men wer ...
... primary duty involved communications with ground control. At some point during the long, grueling day, a short circuit sparked one of the wires in the capsule. This spark eventually led to a raging fire in the 100% high pressure oxygen conditions in the spacecraft. In less than a minute, the men wer ...
Conceptual Physics Gravity
... dictates the motion of the stars and planets is what holds us on the Earth. This realization is called the Newtonian synthesis. ...
... dictates the motion of the stars and planets is what holds us on the Earth. This realization is called the Newtonian synthesis. ...
Star Dust By the Rev. Tom Garrison
... says in the burial service of the Book of Common Prayer: “Ashes to ashes. Dust to dust.” i Scientists tell us that approximately 40,000 tons of cosmic dust fall on earth every year from outer space.ii And you were worried about a few dust bunnies in your home? If you think that is a lot, analysts wi ...
... says in the burial service of the Book of Common Prayer: “Ashes to ashes. Dust to dust.” i Scientists tell us that approximately 40,000 tons of cosmic dust fall on earth every year from outer space.ii And you were worried about a few dust bunnies in your home? If you think that is a lot, analysts wi ...
The H-R Diagram
... • These are even brighter than the SN II’s, which come from massive stars. • Very useful – they’re all the ~same event – 1.4 solar mass white dwarfs passing the Chandrasekhar Limit, collapsing initially, triggering carbon nuclear fusion all in a flash. So they turn out to be… • GREAT “standard candl ...
... • These are even brighter than the SN II’s, which come from massive stars. • Very useful – they’re all the ~same event – 1.4 solar mass white dwarfs passing the Chandrasekhar Limit, collapsing initially, triggering carbon nuclear fusion all in a flash. So they turn out to be… • GREAT “standard candl ...
Science and the Universe
... • New models/ideas are called hypotheses • Contrary to common beliefs, much is yet to be learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very well understood, but others remain “mysteriou ...
... • New models/ideas are called hypotheses • Contrary to common beliefs, much is yet to be learned in astronomy (and physics in general) • New phenomena are observed constantly, and new hypotheses needed to explain these • Some observational facts are very well understood, but others remain “mysteriou ...
A Absolute Magnitude A scale for measuring the actual
... explosion about 13.7 billion years ago. This is the current accepted theory for the origin of the universe and is supported by measurements of background radiation and the observed expansion of space. Binary A system of two stars that revolve around a common center of gravity. Black Hole The collaps ...
... explosion about 13.7 billion years ago. This is the current accepted theory for the origin of the universe and is supported by measurements of background radiation and the observed expansion of space. Binary A system of two stars that revolve around a common center of gravity. Black Hole The collaps ...
the Scientific Revolution - Kapteyn Astronomical Institute
... universe, Kepler consistently utilizes Platonic and Neo‐Platonic frameworks of thought. ‐ The entirety of the polyhedral idea is based on the same "formal cause" postulated by Plato for the structure of the universe. ‐ In an argument from design, Kepler postulates the existence and necessity ...
... universe, Kepler consistently utilizes Platonic and Neo‐Platonic frameworks of thought. ‐ The entirety of the polyhedral idea is based on the same "formal cause" postulated by Plato for the structure of the universe. ‐ In an argument from design, Kepler postulates the existence and necessity ...
Telescopes (continued). Properties of Stars.
... No detector is sensitive to the entire spectrum. Usually we measure apparent brightness in a small range of the complete spectrum. Eyes are sensitive to visible light. When we measure the apparent brightness in the visible region, we can calculate only the visiblelight luminosity. ...
... No detector is sensitive to the entire spectrum. Usually we measure apparent brightness in a small range of the complete spectrum. Eyes are sensitive to visible light. When we measure the apparent brightness in the visible region, we can calculate only the visiblelight luminosity. ...
Lecture 2a
... combined with centuries of data on planetary motions ! formulated complete description of the Solar System that explained/predicted the apparent motion – Unfortunately, the Ptolemy framework was extremely complicated in order to explain retrograde motion. ...
... combined with centuries of data on planetary motions ! formulated complete description of the Solar System that explained/predicted the apparent motion – Unfortunately, the Ptolemy framework was extremely complicated in order to explain retrograde motion. ...
Constellations
... A natural human tendency is to see patterns and relationships between objects even when no true connection exists. Long ago, people connected the brightest stars into configurations called constellations, which ancient astronomers named after mythological beings, heroes, and animals—whatever was imp ...
... A natural human tendency is to see patterns and relationships between objects even when no true connection exists. Long ago, people connected the brightest stars into configurations called constellations, which ancient astronomers named after mythological beings, heroes, and animals—whatever was imp ...