Bluffer`s Guide to Orion
... The Mighty Hunter Orion stands proudly in the sky. Sirius is the prominent star in the lower left, and part of Taurus can be seen at upper right. Diagram created with Starry Night software. years away and thirty light years across, and is the closest region of star formation to Earth. A lot of what ...
... The Mighty Hunter Orion stands proudly in the sky. Sirius is the prominent star in the lower left, and part of Taurus can be seen at upper right. Diagram created with Starry Night software. years away and thirty light years across, and is the closest region of star formation to Earth. A lot of what ...
Picture: Alnitak is the left-hand star in Orion`s Belt. Image: NASA
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
www-thphys.physics.ox.ac.uk
... Local disk density • Near Sun vrand! • ½(R0,0) = 0.1§0.01 M¯ pc-3 ...
... Local disk density • Near Sun vrand! • ½(R0,0) = 0.1§0.01 M¯ pc-3 ...
Homework #2
... 7) The absorption lines seen in spectra of stars provide information about their surface temperatures and luminosities. The graph below shows the relative strengths of absorption lines due to different atoms and molecules as a function of spectral type. a) The spectrum of Star 1 has strong absorptio ...
... 7) The absorption lines seen in spectra of stars provide information about their surface temperatures and luminosities. The graph below shows the relative strengths of absorption lines due to different atoms and molecules as a function of spectral type. a) The spectrum of Star 1 has strong absorptio ...
Searching for the Secrets of Massive Star Birth
... CepA-East at 710pc, showing chemical and kinematic differentiation between two barely resolved protostars (Brogan et al. 2007). Right: Hot core submillimeter spectrum of the HW2 region (Brogan et al. 2008). ...
... CepA-East at 710pc, showing chemical and kinematic differentiation between two barely resolved protostars (Brogan et al. 2007). Right: Hot core submillimeter spectrum of the HW2 region (Brogan et al. 2008). ...
Assignment Worksheet
... columns A-E (lower left-hand corner of the form). Do not enter your Student ID or any other info into this area, just the 5-digit homework code. 3. Bubble in your answers under questions 1-5 in the fields provided on the form. Please turn in your homework in person during class on Wednesday, January ...
... columns A-E (lower left-hand corner of the form). Do not enter your Student ID or any other info into this area, just the 5-digit homework code. 3. Bubble in your answers under questions 1-5 in the fields provided on the form. Please turn in your homework in person during class on Wednesday, January ...
Supermassive black holes accreting stars through tidal disruption in
... • In axisymmetric case, Jz≤Jlc. Because J is not conserved, boundary in J dimension can be a few times larger than Jlc. (Magorrian & Tremaine, 1999) • Measured in (E,J,Jz) phase space by performing scattering experiment. ...
... • In axisymmetric case, Jz≤Jlc. Because J is not conserved, boundary in J dimension can be a few times larger than Jlc. (Magorrian & Tremaine, 1999) • Measured in (E,J,Jz) phase space by performing scattering experiment. ...
Ay 102: Homework 5 (Blast waves, Supernova Remnant) S. R. Kulkarni
... 7. Explain what you expect in the last phase of the SNR. 2. SNR in halo Consider the case of a two neutron stars merging in the hot halo of the galaxy, n0 = 0.003 cm−3 and T = 106 K. The energy of explosion could be as high as 1050 erg and mass of ejecta (predominantly heavy elements) could be as mu ...
... 7. Explain what you expect in the last phase of the SNR. 2. SNR in halo Consider the case of a two neutron stars merging in the hot halo of the galaxy, n0 = 0.003 cm−3 and T = 106 K. The energy of explosion could be as high as 1050 erg and mass of ejecta (predominantly heavy elements) could be as mu ...
- Lorentz Center
... • White Dwarfs have lots of fuel (He/C/O) and gravitational binding energies per gram less than that of nuclear burning: 1 MeV per baryon ...
... • White Dwarfs have lots of fuel (He/C/O) and gravitational binding energies per gram less than that of nuclear burning: 1 MeV per baryon ...
Earth and Beyond - We can`t sign you in
... A black hole cannot be seen directly and even if it could it wouldn’t be black! A black hole is ‘seen’ by observing the effect it has on nearby matter. If there is a star nearby, matter from the star will spiral into the black hole and as it does so the matter emits X ray radiation which can be dete ...
... A black hole cannot be seen directly and even if it could it wouldn’t be black! A black hole is ‘seen’ by observing the effect it has on nearby matter. If there is a star nearby, matter from the star will spiral into the black hole and as it does so the matter emits X ray radiation which can be dete ...
Degeneracy pressure Normal/degeneracy pressure White dwarfs — Oct 10
... If the gas is confined to a very small space, Newton’s 2nd law becomes invalid. New laws of motion, called quantum mechanics. Heisenberg’s uncertainty principle. A particle is allowed a space x. ...
... If the gas is confined to a very small space, Newton’s 2nd law becomes invalid. New laws of motion, called quantum mechanics. Heisenberg’s uncertainty principle. A particle is allowed a space x. ...
The Star
... above the entrance was now a fused stump, but even the first long-range photographs told us that here was the work of intelligence. A little later we detected the continent-wide pattern of radioactivity that had been buried in the rock. Even if the pylon above the Vault had been destroyed, this woul ...
... above the entrance was now a fused stump, but even the first long-range photographs told us that here was the work of intelligence. A little later we detected the continent-wide pattern of radioactivity that had been buried in the rock. Even if the pylon above the Vault had been destroyed, this woul ...
Gravitational Mass Defect - Science and Education Publishing
... fibers break themselves at a distance by 3 kpc from the nucleus (gas it had time to reach this place), then all enumerated phenomena made it possible to arrive at the conclusion that in the nucleus NGC 3034 about one-and-ahalf million years ago occurred the immense explosion, which caused ejection w ...
... fibers break themselves at a distance by 3 kpc from the nucleus (gas it had time to reach this place), then all enumerated phenomena made it possible to arrive at the conclusion that in the nucleus NGC 3034 about one-and-ahalf million years ago occurred the immense explosion, which caused ejection w ...
How is the Potential Energy Released
... behaviors, but much of the interesting physics/astrophysics is common to all • Understanding of accretion disks, accretion flows, X-ray induced winds, compact object evolution are all in an active state of ...
... behaviors, but much of the interesting physics/astrophysics is common to all • Understanding of accretion disks, accretion flows, X-ray induced winds, compact object evolution are all in an active state of ...
01.05.10 Centuries-Old Star Mystery Coming to a Close For almost
... Now, new observations from NASA's Spitzer Space Telescope -- in combination with archived ultraviolet, visible and other infrared data -- point to one of two competing theories, and a likely solution to this age-old puzzle. One theory holds that the bright star is a massive supergiant, periodically ...
... Now, new observations from NASA's Spitzer Space Telescope -- in combination with archived ultraviolet, visible and other infrared data -- point to one of two competing theories, and a likely solution to this age-old puzzle. One theory holds that the bright star is a massive supergiant, periodically ...
Document
... Status of Pluto Pluto first discovered in 1930 by Clyde W. Tombaugh A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. Pluto has been demo ...
... Status of Pluto Pluto first discovered in 1930 by Clyde W. Tombaugh A full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighborhood around its orbit. Pluto has been demo ...
What is a star?
... How is star brightness measured? • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. ...
... How is star brightness measured? • Astronomers used telescopes see many stars that are too dim to see with the unaided eye. They added to the magnitude system. • Today, the brightest stars have a magnitude of about –2, and the faintest stars that we can see with a telescope have a magnitude of +30. ...
Fulltext PDF - Indian Academy of Sciences
... astronomical unit = the mean distance of the Earth from Sun = 150 million kms.), with masses 1.1 M0 and 0.9 M 0 . The third component, Proxima Centauri orbits around the center of mass (of A and B) at a distance of about 10,000 AU with a mass of ...
... astronomical unit = the mean distance of the Earth from Sun = 150 million kms.), with masses 1.1 M0 and 0.9 M 0 . The third component, Proxima Centauri orbits around the center of mass (of A and B) at a distance of about 10,000 AU with a mass of ...
Stellar Remnants White Dwarfs, Neutron Stars & Black Holes
... • For Main Sequence stars of mass greater than about 20 Solar masses the remnant of the star left behind after a supernova explosion is too large (more than 3 Solar masses) to be a white dwarf or even a neutron star. • These remnants collapse to form Black Holes. • No light can escape from a Black H ...
... • For Main Sequence stars of mass greater than about 20 Solar masses the remnant of the star left behind after a supernova explosion is too large (more than 3 Solar masses) to be a white dwarf or even a neutron star. • These remnants collapse to form Black Holes. • No light can escape from a Black H ...
Planets around Stars Beyond the Main Sequence (Evolved Stars)
... planet hosting stars on the main sequence. Pasquini et al. (2007) hypothesize that the high metal content is due to pollution by planets. When the stars evolve to giants they have deeper convection zones which mixes the chemicals. ...
... planet hosting stars on the main sequence. Pasquini et al. (2007) hypothesize that the high metal content is due to pollution by planets. When the stars evolve to giants they have deeper convection zones which mixes the chemicals. ...
STELLAR FORMATION AND EVOLUTION
... the star's luminosity suddenly increases a billion-fold. For a few days, this single star can be as bright as the entire galaxy. The star has become a supernova. The ejected material is extremely rich in the elements beyond hydrogen and helium; not only is the original light element shell ejected, b ...
... the star's luminosity suddenly increases a billion-fold. For a few days, this single star can be as bright as the entire galaxy. The star has become a supernova. The ejected material is extremely rich in the elements beyond hydrogen and helium; not only is the original light element shell ejected, b ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.