Lecture 15 (pdf from the powerpoint)
... • Iron cannot be fused into any heavier element, so it collects at the center of the star • Gravity pulls the core of the star to a size smaller than the Earth’s diameter! • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core • The core collap ...
... • Iron cannot be fused into any heavier element, so it collects at the center of the star • Gravity pulls the core of the star to a size smaller than the Earth’s diameter! • The core compresses so much that protons and electrons merge into neutrons, taking energy away from the core • The core collap ...
Catching Andromeda`s Light
... Andromeda’s spiral arms, he thought they might also trace the Milky Way’s spiral arms. So in 1951, Morgan mapped the locations of all the red clouds of gas he and his colleagues could find. He discovered that the gas clouds lined up along spiral arms, indicating that we live in a spiral galaxy. Why ...
... Andromeda’s spiral arms, he thought they might also trace the Milky Way’s spiral arms. So in 1951, Morgan mapped the locations of all the red clouds of gas he and his colleagues could find. He discovered that the gas clouds lined up along spiral arms, indicating that we live in a spiral galaxy. Why ...
File
... This second round of gas plows into the first round, creating a visible shell (see figure). ...
... This second round of gas plows into the first round, creating a visible shell (see figure). ...
Binary Stars
... Selection effect: the separate points of light will be easier to see if the stars are widely separated and if the binary is rather close to us. A good example: Sirius ...
... Selection effect: the separate points of light will be easier to see if the stars are widely separated and if the binary is rather close to us. A good example: Sirius ...
Class II Supernova
... Supernova? •It will produce as much energy in it’s time span, then the sun will in its lifetime. •It is not uncommon for a supernova to outshine an entire galaxy. •Quite rare, but sometimes 1 supernova will trigger another one to start. •A type II must have from 3-9 solar masses. ...
... Supernova? •It will produce as much energy in it’s time span, then the sun will in its lifetime. •It is not uncommon for a supernova to outshine an entire galaxy. •Quite rare, but sometimes 1 supernova will trigger another one to start. •A type II must have from 3-9 solar masses. ...
l`Astrofilo - Astro Publishing
... carried out that speculates on the nature of plant life on extrasolar planets with host stars of different types to our Sun (see for example work by Nancy Kiang or John Raven). However, approximately half of the star systems in the galaxy are composed of two or more stars, which leads to the questio ...
... carried out that speculates on the nature of plant life on extrasolar planets with host stars of different types to our Sun (see for example work by Nancy Kiang or John Raven). However, approximately half of the star systems in the galaxy are composed of two or more stars, which leads to the questio ...
LIFE CYCLE OF STARS
... A Star’s Old Age to Death Vocabulary: Planetary Nebula-a shell of gas discarded by a medium star white dwarf-A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size black dwarf-A non-radiating ball of gas resulting from a white dwarf that has radiated all it ...
... A Star’s Old Age to Death Vocabulary: Planetary Nebula-a shell of gas discarded by a medium star white dwarf-A star that has exhausted most or all of its nuclear fuel and has collapsed to a very small size black dwarf-A non-radiating ball of gas resulting from a white dwarf that has radiated all it ...
January 2007 - Western Nevada Astronomical Society
... from us in our daily lives. In the momentary reality of one evening at a time, my trips to the Observatory have taken the seemingly unattainable and actually made it a part of my life. Even before it became an assignment, I gained a lot from what these observations offered me. I got to see one of ou ...
... from us in our daily lives. In the momentary reality of one evening at a time, my trips to the Observatory have taken the seemingly unattainable and actually made it a part of my life. Even before it became an assignment, I gained a lot from what these observations offered me. I got to see one of ou ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.