Spectral Classification
... which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the constellation of Orion. They constitute about 0.13% of main sequence stars -- rare, but much more common than those of class O. ...
... which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the constellation of Orion. They constitute about 0.13% of main sequence stars -- rare, but much more common than those of class O. ...
Star Formation 1/18/2015
... OB Stars are the most influential Characteristics? _______! Type of light? _______ So? _______ light ionizes Hydrogen Produces large cloud of hot glowing gas - _____________ ...
... OB Stars are the most influential Characteristics? _______! Type of light? _______ So? _______ light ionizes Hydrogen Produces large cloud of hot glowing gas - _____________ ...
Unit 1
... • If the photon has the right energy, it will be absorbed by an atom and raise an electron to a higher energy level • Creates absorption spectra, a unique “fingerprint” for the star’s composition. The strength of this spectra is determined by the star’s temperature. ...
... • If the photon has the right energy, it will be absorbed by an atom and raise an electron to a higher energy level • Creates absorption spectra, a unique “fingerprint” for the star’s composition. The strength of this spectra is determined by the star’s temperature. ...
PHYS 390 Lecture 31 - Kinematics of galaxies 31
... That the mass enclosed within Ro is about 1011 solar masses is at once both comforting and disturbing. Comforting, in that it is the correct order of magnitude, as the mass of visible matter in the Milky Way is about 1011 solar masses, as previously mentioned. However, not all of this mass lies with ...
... That the mass enclosed within Ro is about 1011 solar masses is at once both comforting and disturbing. Comforting, in that it is the correct order of magnitude, as the mass of visible matter in the Milky Way is about 1011 solar masses, as previously mentioned. However, not all of this mass lies with ...
PH607lec12
... Because of cool interstellar dust along the line of sight, the Galactic Centre cannot be studied at visible, ultraviolet or soft Xray wavelengths. The available information about the Galactic Center comes from observations at gamma ray, hard X-ray, infrared, sub-millimetre and radio wavelengths. ...
... Because of cool interstellar dust along the line of sight, the Galactic Centre cannot be studied at visible, ultraviolet or soft Xray wavelengths. The available information about the Galactic Center comes from observations at gamma ray, hard X-ray, infrared, sub-millimetre and radio wavelengths. ...
Introduction to the Earth
... Black holes If the star was bigger than 30 times the mass of the sun The left over core becomes so dense that light can’t escape its gravity. Becomes a black hole. Grab any nearby matter and get bigger As matter falls in, it gives off x-rays. That’s how they find them ...
... Black holes If the star was bigger than 30 times the mass of the sun The left over core becomes so dense that light can’t escape its gravity. Becomes a black hole. Grab any nearby matter and get bigger As matter falls in, it gives off x-rays. That’s how they find them ...
Was kann man von offenen Sternhaufen lernen?
... Star Associations and Moving Groups Besides classical star clusters according to our definition there are also • Moving Groups • Stellar Associations • Open Cluster remnants • (Star Forming regions) There is a continuous transition between star clusters and these four types of stellar aggregates ...
... Star Associations and Moving Groups Besides classical star clusters according to our definition there are also • Moving Groups • Stellar Associations • Open Cluster remnants • (Star Forming regions) There is a continuous transition between star clusters and these four types of stellar aggregates ...
Montage of Jupiter and the Galilean satellites
... field of the inner nebula. In the nebula's very center lies a pulsar: a neutron star rotating, in this case, 30 times a second. November 22, 1999 ...
... field of the inner nebula. In the nebula's very center lies a pulsar: a neutron star rotating, in this case, 30 times a second. November 22, 1999 ...
Chapter 7 Review Answers
... at the beginning of the universe (BBT) went. That extra radiation should be present throughout the universe if the BBT was to be true. We believe now that the cosmic background radiation is that extra energy/radiation. The CBR found fits with the predictions consistent with the BBT, supporting the B ...
... at the beginning of the universe (BBT) went. That extra radiation should be present throughout the universe if the BBT was to be true. We believe now that the cosmic background radiation is that extra energy/radiation. The CBR found fits with the predictions consistent with the BBT, supporting the B ...
Time From the Perspective of a Particle Physicist
... largest stars in the cluster tells us how old all the stars in that cluster are. The oldest clusters are formed from the primordial material of the Universe (before stars existed) and their atomic composition is a fossil record from the first few minutes after the Universe was created ...
... largest stars in the cluster tells us how old all the stars in that cluster are. The oldest clusters are formed from the primordial material of the Universe (before stars existed) and their atomic composition is a fossil record from the first few minutes after the Universe was created ...
Characteristics of stars powerpoint
... • Distance across the Milky Way = 250 million billion kilometers • Even if you could travel at the speed of light it would still take you 25,000 years to cross the galaxy ...
... • Distance across the Milky Way = 250 million billion kilometers • Even if you could travel at the speed of light it would still take you 25,000 years to cross the galaxy ...
Mass Segregation in Globular Clusters
... Because the light in the telescopic image of a star is spread over several adjacent pixels, we exercised extreme care and control to ensure positional accuracy. By carefully selecting the ACS filter through which the observations were made, the two target groups of stars with very different masses ...
... Because the light in the telescopic image of a star is spread over several adjacent pixels, we exercised extreme care and control to ensure positional accuracy. By carefully selecting the ACS filter through which the observations were made, the two target groups of stars with very different masses ...
15.2 Characteristics of Stars
... Measuring with Light • When stars are moving toward Earth, their wavelengths appear to be shortened or shirt toward the blue side of the spectrum ...
... Measuring with Light • When stars are moving toward Earth, their wavelengths appear to be shortened or shirt toward the blue side of the spectrum ...
Amie Bickert - ColonialAcademyScience
... Teacher Models: Vocabulary words Nebula- a large cloud of gas and dust spread out in an immense volume. Protostar- earliest stage of a stars life White dwarf: blue-white core of the star that is left behind cools forms this. Supernovas: an explosion of a suergiant Neutron star: the rem ...
... Teacher Models: Vocabulary words Nebula- a large cloud of gas and dust spread out in an immense volume. Protostar- earliest stage of a stars life White dwarf: blue-white core of the star that is left behind cools forms this. Supernovas: an explosion of a suergiant Neutron star: the rem ...
Lecture 24, PPT version
... • High mass stars end their lives as either neutron stars or black holes after undergoing a supernova • Supernova of high mass star triggered by build up of iron in the core • White dwarf novae and supernovae must occur in binary systems ...
... • High mass stars end their lives as either neutron stars or black holes after undergoing a supernova • Supernova of high mass star triggered by build up of iron in the core • White dwarf novae and supernovae must occur in binary systems ...
1000
... We are not in the center of our solar system, which is not in the center of the Milky Way and we are just one of a billion galaxies in the universe. Earth is made of common elements found throughtout the universe. ...
... We are not in the center of our solar system, which is not in the center of the Milky Way and we are just one of a billion galaxies in the universe. Earth is made of common elements found throughtout the universe. ...
PPT - Mr.E Science
... Stars smaller than the Sun have lives up to 200 billion years Medium Stars, like our Sun – have lives about 10 billion years Massive Stars – have very “short” life spans – about 10 million years ...
... Stars smaller than the Sun have lives up to 200 billion years Medium Stars, like our Sun – have lives about 10 billion years Massive Stars – have very “short” life spans – about 10 million years ...
Document
... j. How is it possible that Canopus is more luminous than Achernar, given their respective spectral types? Canopus is cooler than Achernar; therefore, the only way Canopus can be more luminous is because it is LARGER. 2. List the evolutionary stages of the Sun’s life cycle & describe how its size (Ra ...
... j. How is it possible that Canopus is more luminous than Achernar, given their respective spectral types? Canopus is cooler than Achernar; therefore, the only way Canopus can be more luminous is because it is LARGER. 2. List the evolutionary stages of the Sun’s life cycle & describe how its size (Ra ...
CelestialSphere
... after, or come up before it. If they go down after, we see them in the evening. ...
... after, or come up before it. If they go down after, we see them in the evening. ...
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.