Star formation and lifetimes
... 1. The gases inside the Sun are burning and producing large amounts of energy. 2. Hydrogen is combined into helium, giving off large amounts of energy. 3. Gas inside the Sun heats up when compressed, giving off large amounts of energy. 4. Heat trapped by magnetic fields in the Sun is released as ene ...
... 1. The gases inside the Sun are burning and producing large amounts of energy. 2. Hydrogen is combined into helium, giving off large amounts of energy. 3. Gas inside the Sun heats up when compressed, giving off large amounts of energy. 4. Heat trapped by magnetic fields in the Sun is released as ene ...
earth & space science
... more compact, these regions spin and shrink and begin to form a flattened disk. The disk has a central concentration of matter called a protostar. The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its elect ...
... more compact, these regions spin and shrink and begin to form a flattened disk. The disk has a central concentration of matter called a protostar. The protostar continues to contract and increase in temperature for several million years. Eventually the gas in the region becomes so hot that its elect ...
Test#4
... a) Hubble’s Law b) Law of Redshifts c) Einstein’s Law d) Doppler’s Law 36. Astronomers are beginning to believe that what lies at the center of most galaxies a) star formation regions b) very compact globular clusters c) clusters of neutron stars d) black hole 37. Einstein’s ring is a) a planetary n ...
... a) Hubble’s Law b) Law of Redshifts c) Einstein’s Law d) Doppler’s Law 36. Astronomers are beginning to believe that what lies at the center of most galaxies a) star formation regions b) very compact globular clusters c) clusters of neutron stars d) black hole 37. Einstein’s ring is a) a planetary n ...
Friday, February 12, 2016 Astronomy in the news?
... Goal: to understand the origin of Type II, Ib, Ic ...
... Goal: to understand the origin of Type II, Ib, Ic ...
PPT - Yale University
... magnitude more than the maximum that can be contained in a single star, even rotating at breakup speed. The specific angular momentum of matter in a galactic bulge is 4 – 5 orders of magnitude more than can be contained in a maximally rotating black hole. ...
... magnitude more than the maximum that can be contained in a single star, even rotating at breakup speed. The specific angular momentum of matter in a galactic bulge is 4 – 5 orders of magnitude more than can be contained in a maximally rotating black hole. ...
Spectroscopy in stellar astrophysics
... ASTROPHYSICS : studies the physics of stars, stellar systems and interstellar material. ...
... ASTROPHYSICS : studies the physics of stars, stellar systems and interstellar material. ...
Linking Asteroids and Meteorites through Reflectance
... form Hydrogen molecules (H2) • Temperatures like 10-30 K • Denser than surrounding regions ...
... form Hydrogen molecules (H2) • Temperatures like 10-30 K • Denser than surrounding regions ...
HW11
... leaves the main sequence, what the sub-giant and giant phases are and what is happening inside the star during these phases. What is happening to the star when helium core burning is occurring and what is happening during the planetary nebula phase and what is a white dwarf. Also understand how we c ...
... leaves the main sequence, what the sub-giant and giant phases are and what is happening inside the star during these phases. What is happening to the star when helium core burning is occurring and what is happening during the planetary nebula phase and what is a white dwarf. Also understand how we c ...
NASC 1100 Lecture 1
... since 1995 The Extrasolar Planet Encyclopedia Stars are too far away from the Sun, and direct imaging cannot detect planets near them Current strategy involves watching for the small gravitational tag the planet exerts on its star The tag can be detected using the Doppler effect ...
... since 1995 The Extrasolar Planet Encyclopedia Stars are too far away from the Sun, and direct imaging cannot detect planets near them Current strategy involves watching for the small gravitational tag the planet exerts on its star The tag can be detected using the Doppler effect ...
Astronomy HOMEWORK Chapter 4 - University of San Diego Home
... light, d. ultraviolet, e. X ray a. infrared 4. What is a blackbody? What does it mean to say that a star appears almost like a blackbody? If stars appear to be like blackbodies, why are they not black? A blackbody is an object that absorbs all of the enrgy that falls on it. According to the laws of ...
... light, d. ultraviolet, e. X ray a. infrared 4. What is a blackbody? What does it mean to say that a star appears almost like a blackbody? If stars appear to be like blackbodies, why are they not black? A blackbody is an object that absorbs all of the enrgy that falls on it. According to the laws of ...
HR Diagram and Life of a star
... GIANTS- large bright stars a bit smaller and fainter than Super giants Super giants in the Red temp range tend to be in their last stages of life. They are out of hydrogen and are now fusing Helium into Carbon. White Dwarfs- are the small, dense remains of low or medium mass stars. They are very hot ...
... GIANTS- large bright stars a bit smaller and fainter than Super giants Super giants in the Red temp range tend to be in their last stages of life. They are out of hydrogen and are now fusing Helium into Carbon. White Dwarfs- are the small, dense remains of low or medium mass stars. They are very hot ...
Document
... So the spectra reveal details about the light source. We can use that same approach to study planets, stars, and galaxies. We can deduce the temperature and abundances of various chemical elements in the outer atmosphere of a star. Theorists predicted that when the universe was forming there was lit ...
... So the spectra reveal details about the light source. We can use that same approach to study planets, stars, and galaxies. We can deduce the temperature and abundances of various chemical elements in the outer atmosphere of a star. Theorists predicted that when the universe was forming there was lit ...
ppt - Astronomy & Physics
... The HR diagram allows us to define the evolution of stars in terms of tracks on a luminosity/temperature diagram’ Stars heavier than 2 solar masses don’t live long enough for intelligent life to evolve Even stars like the Sun are destined to expand through a supergiant phase which will eventually ma ...
... The HR diagram allows us to define the evolution of stars in terms of tracks on a luminosity/temperature diagram’ Stars heavier than 2 solar masses don’t live long enough for intelligent life to evolve Even stars like the Sun are destined to expand through a supergiant phase which will eventually ma ...
Chapter 20 The Universe
... -our solar system is part of Milky Way Galaxy - what we see as the Milky Way is only the edge (spiral galaxy) ...
... -our solar system is part of Milky Way Galaxy - what we see as the Milky Way is only the edge (spiral galaxy) ...
The Universe
... because gases naturally expand –The catch is that the conditions required to compress the gas to that point seem to require the shock waves from the explosion of a previously existing star ...
... because gases naturally expand –The catch is that the conditions required to compress the gas to that point seem to require the shock waves from the explosion of a previously existing star ...
Star Formation, HR Diagram, and the Main Sequence (Professor
... In stars that are hotter than 18 million degrees Kelvin, protons are fused into 1 Helium nucleus via a multi-step nuclear reaction , where Carbon is the catalyst. ...
... In stars that are hotter than 18 million degrees Kelvin, protons are fused into 1 Helium nucleus via a multi-step nuclear reaction , where Carbon is the catalyst. ...
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.