HOMEWORK #1
... to our Sun. Use the lightcurve to determine the speed of the companion star and its orbital period (P). Calculate the semi-major axis (a) and total mass via Kepler’s Third Law. What is the mass of the companion star? Show all your work even though you may not be satisfied with your final answer. We ...
... to our Sun. Use the lightcurve to determine the speed of the companion star and its orbital period (P). Calculate the semi-major axis (a) and total mass via Kepler’s Third Law. What is the mass of the companion star? Show all your work even though you may not be satisfied with your final answer. We ...
Galaxies
... • The Milky Way system is a spiral galaxy consisting of over 400 billion stars, plus gas and dust arranged into three general components: – The halo: a roughly spherical distribution which contains the oldest stars in the Galaxy including Globular Clusters; – The nuclear bulge and Galactic Center: t ...
... • The Milky Way system is a spiral galaxy consisting of over 400 billion stars, plus gas and dust arranged into three general components: – The halo: a roughly spherical distribution which contains the oldest stars in the Galaxy including Globular Clusters; – The nuclear bulge and Galactic Center: t ...
Foundation 1 - Discovering Astronomy
... When core hydrogen fusion ceases, a main-sequence star becomes a giant • When hydrogen fusion ceases in the core, the star will collapse inward – this causes the layer just outside the core to become so hot and dense that hydrogen fusion will begin in this outer layer. • The energy produced by hydr ...
... When core hydrogen fusion ceases, a main-sequence star becomes a giant • When hydrogen fusion ceases in the core, the star will collapse inward – this causes the layer just outside the core to become so hot and dense that hydrogen fusion will begin in this outer layer. • The energy produced by hydr ...
05Sky1.ppt - NMSU Astronomy
... • Note that the predictions of astrology may work sometimes; almost certainly, some of these predictions will work sometimes by chance! Certainly, astrology is not a fully deterministic theory; if it claimed to be so, even a single example of a failed astrological prediction would invalidate the the ...
... • Note that the predictions of astrology may work sometimes; almost certainly, some of these predictions will work sometimes by chance! Certainly, astrology is not a fully deterministic theory; if it claimed to be so, even a single example of a failed astrological prediction would invalidate the the ...
Stellar Evolution – Life of a Star
... released as neutrinos by electromagnetic forces. The shock wave caused by this force is a HIGH-MASS STAR SUPERNOVA. ...
... released as neutrinos by electromagnetic forces. The shock wave caused by this force is a HIGH-MASS STAR SUPERNOVA. ...
Full Press Release - The Open University
... coming from both the massive star at the centre of the nebula and the newly born stars in the dense gas itself, and emits infrared light. The formation of a new generation of stars is now taking place within this compressed gas in these outer shell structures. The AKARI data reveals for the first ti ...
... coming from both the massive star at the centre of the nebula and the newly born stars in the dense gas itself, and emits infrared light. The formation of a new generation of stars is now taking place within this compressed gas in these outer shell structures. The AKARI data reveals for the first ti ...
The Stars: Distance, Luminosity, Size
... Parallax would be easier to measure if 1) the stars were further away. 2) Earth's orbit were larger. ...
... Parallax would be easier to measure if 1) the stars were further away. 2) Earth's orbit were larger. ...
Chapter 14. Stellar Structure and Evolution
... Inevitably a star will exhaust the H in its core, having converted it to He. The Sun is about half way through that process. In the core of the Sun, we believe the present composition is about 50% He. As the He is created, the core of the star must move to slightly higher temperatures and pressures ...
... Inevitably a star will exhaust the H in its core, having converted it to He. The Sun is about half way through that process. In the core of the Sun, we believe the present composition is about 50% He. As the He is created, the core of the star must move to slightly higher temperatures and pressures ...
Chapter 7: The Galaxy, structure and content File
... appear for stars of all ages. (And these are clumps only in velocity space, not in real space.) The idea that there are groups of stars at similar velocities is itself not new—it actually dates from the early proper motion measurements of nearly a century ago. But these ‘streams’ have generally been ...
... appear for stars of all ages. (And these are clumps only in velocity space, not in real space.) The idea that there are groups of stars at similar velocities is itself not new—it actually dates from the early proper motion measurements of nearly a century ago. But these ‘streams’ have generally been ...
Galaxies have different sizes and shapes.
... the Milky Way galaxy. The Sun lies within a galaxy called the Milky Way. Remember that a galaxy is a huge grouping of stars, gas, and dust held together by gravity. Without a telescope, you can only see nearby stars clearly. Those stars are a tiny fraction of the several hundred billion in the Milky ...
... the Milky Way galaxy. The Sun lies within a galaxy called the Milky Way. Remember that a galaxy is a huge grouping of stars, gas, and dust held together by gravity. Without a telescope, you can only see nearby stars clearly. Those stars are a tiny fraction of the several hundred billion in the Milky ...
TMSP Stellar Evolution & Life
... http://www.seafriends.org.nz/oceano/abund.htm http://www.daviddarling.info/encyclopedia/E/elbio.html http://www.lpi.usra.edu/meetings/abscicon2010/pdf/5547.pdf ...
... http://www.seafriends.org.nz/oceano/abund.htm http://www.daviddarling.info/encyclopedia/E/elbio.html http://www.lpi.usra.edu/meetings/abscicon2010/pdf/5547.pdf ...
How many stars are visible to the naked eye in the night sky?
... established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
... established in 1983, twelve Canadians have been selected to become astronauts. Currently there are two active Canadian Astronauts. They are: LieutenantColonel Jeremy Hansen and Dr. David SaintJacques. ...
Main Sequence Stars
... is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the s ...
... is that there is only one way to make a star with a given mass and chemical composition – if we start with a just formed protostar of a given mass and chemical composition, we can calculate how that star will evolve over its entire life. • This is extremely useful because it greatly simplifies the s ...
Stars, Galaxies & Universe
... yesterday. The star that exploded was 180 light years away. When would you observe the supernova and what would you see? After answering this question, meet with a partner to compare your responses. Collaborate to make a new paired response to the question. ...
... yesterday. The star that exploded was 180 light years away. When would you observe the supernova and what would you see? After answering this question, meet with a partner to compare your responses. Collaborate to make a new paired response to the question. ...
Measuring Radii and Temperatures of Stars
... • To avoid uncertainties in Teff and BC • Determine PV as a function of B-V PV(B-V)=logTeff – 0.1BC PV ( B V ) a b( B V ) c( B V ) 2 d ( B V )3 ...
... • To avoid uncertainties in Teff and BC • Determine PV as a function of B-V PV(B-V)=logTeff – 0.1BC PV ( B V ) a b( B V ) c( B V ) 2 d ( B V )3 ...
d = 1 / p
... parallax angles). At the present the smallest parallax angle we can measure is about 0.001 arcsec, or 1000 parsecs (about 3300 light years). This is enough for most of the stars we see in the sky, but not most of the stars in the Galaxy (which is over 20000 parsecs across). Inverse Square Law – Calc ...
... parallax angles). At the present the smallest parallax angle we can measure is about 0.001 arcsec, or 1000 parsecs (about 3300 light years). This is enough for most of the stars we see in the sky, but not most of the stars in the Galaxy (which is over 20000 parsecs across). Inverse Square Law – Calc ...
d = 1 / p
... parallax angles). At the present the smallest parallax angle we can measure is about 0.001 arcsec, or 1000 parsecs (about 3300 light years). This is enough for most of the stars we see in the sky, but not most of the stars in the Galaxy (which is over 20000 parsecs across). Inverse Square Law – Calc ...
... parallax angles). At the present the smallest parallax angle we can measure is about 0.001 arcsec, or 1000 parsecs (about 3300 light years). This is enough for most of the stars we see in the sky, but not most of the stars in the Galaxy (which is over 20000 parsecs across). Inverse Square Law – Calc ...
What is a Hertzsprung
... • Some stars vary in brightness because they cannot achieve proper balance between power welling up from the core and power radiated from the surface • Such a star alternately expands and contracts, varying in brightness as it tries to find a balance ...
... • Some stars vary in brightness because they cannot achieve proper balance between power welling up from the core and power radiated from the surface • Such a star alternately expands and contracts, varying in brightness as it tries to find a balance ...
Name
... 30) The helium fusion process that will occur in the lifetime of a Star with a mass similar to the Sun converts … A) four helium nuclei into one carbon nucleus plus energy B) four helium nuclei into two carbon nucleus plus energy C) two helium nuclei into one carbon nucleus plus energy D) two helium ...
... 30) The helium fusion process that will occur in the lifetime of a Star with a mass similar to the Sun converts … A) four helium nuclei into one carbon nucleus plus energy B) four helium nuclei into two carbon nucleus plus energy C) two helium nuclei into one carbon nucleus plus energy D) two helium ...
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.