Слайд 1 - Tuorla Observatory
... parameters are more accurate than for single star • (b) All stars are of the same age. Star clusters are the only objects that enable direct age estimate, study of the galactic evolution and the star-formation history • (c) All stars have nearly the same chemical composition, and the differences in ...
... parameters are more accurate than for single star • (b) All stars are of the same age. Star clusters are the only objects that enable direct age estimate, study of the galactic evolution and the star-formation history • (c) All stars have nearly the same chemical composition, and the differences in ...
Integrated Science Names (Do with ONE partner or by yourself) How
... 4. A single penny is about 0.13 centimeters. How high a stack would 1 billion pennies be? Multiply 0.13 x 1,000,000,000 _______________________________________ cm How high would 200 billion pennies be? Multiply above by 200 ________________________________________ cm Would a stack of 200 billion pen ...
... 4. A single penny is about 0.13 centimeters. How high a stack would 1 billion pennies be? Multiply 0.13 x 1,000,000,000 _______________________________________ cm How high would 200 billion pennies be? Multiply above by 200 ________________________________________ cm Would a stack of 200 billion pen ...
Energy rate density as a complexity metric and
... for 11 Gy; its values of L and Ts change little. Still, it is instructive to track those small changes, for they show that Fm does increase throughout the Sun’s long lifetime, even in its relatively stable main-sequence phase. Both theoretical inference and observational evidence reveal that our Su ...
... for 11 Gy; its values of L and Ts change little. Still, it is instructive to track those small changes, for they show that Fm does increase throughout the Sun’s long lifetime, even in its relatively stable main-sequence phase. Both theoretical inference and observational evidence reveal that our Su ...
Let`s discuss some problems of Physics and Astronomy
... 1. It is established that our Universe has recession of galaxies. It happens with a considerable acceleration, the explanation to which is not found. Stars and galaxies (probably fragments, and star galaxies later) appeared after Big Bang of our Universe. They produce radiation, the lion’s share of ...
... 1. It is established that our Universe has recession of galaxies. It happens with a considerable acceleration, the explanation to which is not found. Stars and galaxies (probably fragments, and star galaxies later) appeared after Big Bang of our Universe. They produce radiation, the lion’s share of ...
LAB #3 - GEOCITIES.ws
... LAB. You will begin lab with a short quiz on these questions. What are Magnitudes? Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determ ...
... LAB. You will begin lab with a short quiz on these questions. What are Magnitudes? Because what we know about stars is due solely to our analysis of their light, it is very important to develop further the idea of stellar magnitude, or how bright a star is. When the Greeks scientist Hipparcos determ ...
Test 3 Review Clicker Questions
... b) it arises from cool helium gas present throughout space. c) it can be detected with optical telescopes. d) it is produced by protostars. e) it reveals the structure of new stars. ...
... b) it arises from cool helium gas present throughout space. c) it can be detected with optical telescopes. d) it is produced by protostars. e) it reveals the structure of new stars. ...
Frank Timmes (ASU)
... 1. SN Ia 2011fe (M101) discovered by the Palomar Transient Factory about 11 hours after the explosion. No evidence for circumbinary material and progenitor likely a CO WD. 2. However, PTF 11kx was a SN Ia that exploded in a system with circumbinary material and they suggest that the progenitor was a ...
... 1. SN Ia 2011fe (M101) discovered by the Palomar Transient Factory about 11 hours after the explosion. No evidence for circumbinary material and progenitor likely a CO WD. 2. However, PTF 11kx was a SN Ia that exploded in a system with circumbinary material and they suggest that the progenitor was a ...
Stellar interactions in dense and sparse star clusters
... Context. Stellar encounters potentially affect the evolution of the protoplanetary discs in the Orion Nebula Cluster (ONC). However, the role of encounters in other cluster environments is less known. Aims. We investigate the effect of the encounter-induced disc-mass loss in different cluster environme ...
... Context. Stellar encounters potentially affect the evolution of the protoplanetary discs in the Orion Nebula Cluster (ONC). However, the role of encounters in other cluster environments is less known. Aims. We investigate the effect of the encounter-induced disc-mass loss in different cluster environme ...
PowerPoint
... • Doppler shift– toward (blue) and away (red) • Quantum mechanics– electrons can be wave-like – Electrons around nucleus have certain orbits– defines emission and absorption of each atom – When excited, atoms emit certain lines (like in class)– fingerprint or barcode of atom ...
... • Doppler shift– toward (blue) and away (red) • Quantum mechanics– electrons can be wave-like – Electrons around nucleus have certain orbits– defines emission and absorption of each atom – When excited, atoms emit certain lines (like in class)– fingerprint or barcode of atom ...
CBO_Paper2_UnderstandingtheStoryOfTheUniverse
... galaxies contain millions, billions, or even trillions of stars, this mass is not large enough to account for the gravitational pull exerted on other galaxies to prevent them from falling apart. In order to account for this gravitational pull, the physicists input dark matter into their computer sim ...
... galaxies contain millions, billions, or even trillions of stars, this mass is not large enough to account for the gravitational pull exerted on other galaxies to prevent them from falling apart. In order to account for this gravitational pull, the physicists input dark matter into their computer sim ...
Document
... This diagram shows a single closed dimension of cosmological space (a huge cosmic great circle) and many local ‘directions’ or dimensions of time. We may think of time in spacetime in much the same way that we think of the gravitational gradient on Earth; time is not a single dimension of spacetime, ...
... This diagram shows a single closed dimension of cosmological space (a huge cosmic great circle) and many local ‘directions’ or dimensions of time. We may think of time in spacetime in much the same way that we think of the gravitational gradient on Earth; time is not a single dimension of spacetime, ...
The new X-ray universe
... of sources) and at the known distance of M82 this implied that it was “ultraluminous” (Lx >1039 erg s–1; the source in M82 varies up 1041 erg s–1). While the existence of such objects was hinted at by earlier missions, a substantial number have now been found in Chandra and XMM observations of nearb ...
... of sources) and at the known distance of M82 this implied that it was “ultraluminous” (Lx >1039 erg s–1; the source in M82 varies up 1041 erg s–1). While the existence of such objects was hinted at by earlier missions, a substantial number have now been found in Chandra and XMM observations of nearb ...
Astronomy Astrophysics First detection of the field star overdensity in the Perseus... &
... The spiral arm structure in the Galactic disk is an important component when studying the morphology and dynamics of the Milky Way. However, we still lack a complete picture that describes the nature, origin, and evolution of this structure. Are there two (Drimmel 2000) or four (Russeil 2003) spiral ...
... The spiral arm structure in the Galactic disk is an important component when studying the morphology and dynamics of the Milky Way. However, we still lack a complete picture that describes the nature, origin, and evolution of this structure. Are there two (Drimmel 2000) or four (Russeil 2003) spiral ...
The Correlation of Lithium and Beryllium in F and G
... along with new Li observations for 22 of them. The Li observations preceded the Be ones and were used as a guide to select the stars to be studied for Be. That is, if a star had low Li, depleted but detected, it was thought to be a good candidate to further examine the Li-Be correlation. The other 1 ...
... along with new Li observations for 22 of them. The Li observations preceded the Be ones and were used as a guide to select the stars to be studied for Be. That is, if a star had low Li, depleted but detected, it was thought to be a good candidate to further examine the Li-Be correlation. The other 1 ...
silicon and oxygen abundances in planet-host stars
... of various other metals are enhanced in these stars compared to stars with no known planets. This comes as no surprise, however, given the known positive correlation between host star iron abundance and planet detection rate. Since planet hosts are found to have higher overall iron content (which se ...
... of various other metals are enhanced in these stars compared to stars with no known planets. This comes as no surprise, however, given the known positive correlation between host star iron abundance and planet detection rate. Since planet hosts are found to have higher overall iron content (which se ...
Test Ch. 27 Multiple Choice Identify the choice that best completes
... 25. In the last stage of stellar evolution following a supernova, stars too massive to form neutron stars may form a A. black dwarf. B. red supergiant. C. white dwarf. D. black hole. 26. In which stage of stellar evolution does combined hydrogen fusion and helium fusion cause a star’s outer shell to ...
... 25. In the last stage of stellar evolution following a supernova, stars too massive to form neutron stars may form a A. black dwarf. B. red supergiant. C. white dwarf. D. black hole. 26. In which stage of stellar evolution does combined hydrogen fusion and helium fusion cause a star’s outer shell to ...
Transits of Earth-Like Planets
... and show the effect of each atmospheric species, aerosol, and Rayleigh scattering. Clouds do not significantly affect this picture because the opacity of the lower atmosphere from aerosol and Rayleigh losses dominates over cloud losses. We calculate the optimum signal-to-noise ratio for spectral fea ...
... and show the effect of each atmospheric species, aerosol, and Rayleigh scattering. Clouds do not significantly affect this picture because the opacity of the lower atmosphere from aerosol and Rayleigh losses dominates over cloud losses. We calculate the optimum signal-to-noise ratio for spectral fea ...
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.