AST1001.ch13
... The White Dwarf Limit • Quantum mechanics says that electrons must move faster as they are squeezed into a very small space. • As a white dwarf’s mass approaches 1.4MSun, its electrons must move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more ...
... The White Dwarf Limit • Quantum mechanics says that electrons must move faster as they are squeezed into a very small space. • As a white dwarf’s mass approaches 1.4MSun, its electrons must move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more ...
33-3 - Fremont Peak Observatory
... This object is a very faint planetary nebula but it’s BIG. The outer circumference is about 25 arc minutes, so it fills up a large portion of my field of view. Compared to other planetary nebulae, it’s only 700 light-years from Earth! There are no really bright stars close to the Helix. When I first ...
... This object is a very faint planetary nebula but it’s BIG. The outer circumference is about 25 arc minutes, so it fills up a large portion of my field of view. Compared to other planetary nebulae, it’s only 700 light-years from Earth! There are no really bright stars close to the Helix. When I first ...
Our Galaxy
... not known yet. 3. Most young stars are found in: ) The center, b) in Halo, outskirts of our galaxy, c) disk of our galaxy d) this is not known yet because MWG is too dusty for us to determine this info. 1. a, 2. c, 3. c ...
... not known yet. 3. Most young stars are found in: ) The center, b) in Halo, outskirts of our galaxy, c) disk of our galaxy d) this is not known yet because MWG is too dusty for us to determine this info. 1. a, 2. c, 3. c ...
Catching Andromeda`s Light
... Then they compare the star with the same type of star in the Milky Way. The fainter the star in Andromeda looks, the farther away Andromeda must be. It’s like seeing a distant streetlight. By comparing its faintness with the streetlight in front of your home, you can estimate how far the distant str ...
... Then they compare the star with the same type of star in the Milky Way. The fainter the star in Andromeda looks, the farther away Andromeda must be. It’s like seeing a distant streetlight. By comparing its faintness with the streetlight in front of your home, you can estimate how far the distant str ...
The Milky Way - Montgomery College
... Measuring the Mass of the Black Hole in the Center of the Milky Way By following the orbits of individual stars near the center of the Milky Way, the mass of the central black hole could be determined to be ~ 2.6 million ...
... Measuring the Mass of the Black Hole in the Center of the Milky Way By following the orbits of individual stars near the center of the Milky Way, the mass of the central black hole could be determined to be ~ 2.6 million ...
Description of Pictures In the Dome
... Centaurus A (also known as NGC 5128) is a lenticular galaxy about 11 million light-years away in the constellation Centaurus. It is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers. The galaxy is also the fifth bright ...
... Centaurus A (also known as NGC 5128) is a lenticular galaxy about 11 million light-years away in the constellation Centaurus. It is one of the closest radio galaxies to Earth, so its active galactic nucleus has been extensively studied by professional astronomers. The galaxy is also the fifth bright ...
Astronomy Timeline
... 130 B.C. - Greek astronomer Hipparchus develops the first accurate star map and star catalogue, and a reliable method to predict solar eclipses 46 B.C. - Julius Caesar, after consulting the astronomer Sosigenes of Alexandria, introduces the Julian Calendar, a regular year of 365 days divided into 12 ...
... 130 B.C. - Greek astronomer Hipparchus develops the first accurate star map and star catalogue, and a reliable method to predict solar eclipses 46 B.C. - Julius Caesar, after consulting the astronomer Sosigenes of Alexandria, introduces the Julian Calendar, a regular year of 365 days divided into 12 ...
Reach for the Stars – Div. B
... Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus. Appearing in 1604, it is the most recent supernova to have been unquestionably observed by the naked eye in our own galaxy, occurring no farther than 6 kiloparsecs or about 20,000 light-years from Earth. ...
... Star, was a supernova of Type Ia that occurred in the Milky Way, in the constellation Ophiuchus. Appearing in 1604, it is the most recent supernova to have been unquestionably observed by the naked eye in our own galaxy, occurring no farther than 6 kiloparsecs or about 20,000 light-years from Earth. ...
globular cluster - Harding University
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
... result, we now know that objects are actually about 10% farther away than we previously had thought, i.e., the universe is about 10% larger than we thought. ...
White Dwarfs - University of Maryland Astronomy
... Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 MSun. So what happens in that case?… ...
... Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 MSun. So what happens in that case?… ...
astro2_lec1 - Astronomy & Astrophysics Group
... distances to dozens of nebulae. Even the nearest, in Andromeda, was millions of light ...
... distances to dozens of nebulae. Even the nearest, in Andromeda, was millions of light ...
Guidestar: February, 2015 - Houston Astronomical Society
... February 6th meeting to get your 2015 code. We will soon be putting the site orientation program on the website. In doing so we are going to ask everyone who already has taken the course to take a refresher course. When you complete the course and pass the 10 or so question quiz the data base will a ...
... February 6th meeting to get your 2015 code. We will soon be putting the site orientation program on the website. In doing so we are going to ask everyone who already has taken the course to take a refresher course. When you complete the course and pass the 10 or so question quiz the data base will a ...
Galaxies
... When Edwin Hubble looked at these other galaxies he observed that the further away the galaxy was, the faster it was moving away from us. He came to the conclusion that the universe was expanding. This was Hubble’s Law. ...
... When Edwin Hubble looked at these other galaxies he observed that the further away the galaxy was, the faster it was moving away from us. He came to the conclusion that the universe was expanding. This was Hubble’s Law. ...
nasafinal - University of Oregon
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
PH607lec10
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
... formation event a few million years ago. The existence of these relatively young (though evolved) stars there was of a surprise to experts, who would have expected the tidal forces from the central black-hole to prevent their formation. They are much too young to have migrated far, but it seems even ...
Lecture19
... All stars spend most of their time as main-sequence stars and then change dramatically near the ends of their lives. This figure illustrates the life stages of a high-mass star and a low-mass star and shows how long a star spends in each stage of life. Notice that the lifetime of a low-mass star is ...
... All stars spend most of their time as main-sequence stars and then change dramatically near the ends of their lives. This figure illustrates the life stages of a high-mass star and a low-mass star and shows how long a star spends in each stage of life. Notice that the lifetime of a low-mass star is ...
20 pm - Starmap
... compared to road maps is normal. Hold the map face down above your head, and the cardinal points will be oriented as usual. As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on ...
... compared to road maps is normal. Hold the map face down above your head, and the cardinal points will be oriented as usual. As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on ...
Solutions
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
... 2. Type Ia and Type II Supernovae are each explosions that signify the death of a star and which are briefly as luminous as an entire galaxy. However, they are very different sorts of objects. What is the original source of the energy which powers each type of explosion? (I.e. where did the energy ...
Chapter 13 The Life of a Star The Life of a Star Mass Is the Key The
... gravitationally collapsed over a time span of a few million years • Fusing hydrogen into helium in its core, the Sun will reside on the main sequence for 10 billion years and in the process convert 90% of its core hydrogen into ...
... gravitationally collapsed over a time span of a few million years • Fusing hydrogen into helium in its core, the Sun will reside on the main sequence for 10 billion years and in the process convert 90% of its core hydrogen into ...
Chapter 13
... a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other nebulae ...
... a supernova remnant – During a 1-100 year time frame, a supernova will expand from 0.03 ly to several light-years in diameter – Supernova remnants have a more ragged look compared to planetary and other nebulae ...
Cartwheel Galaxy - Chandra X
... 10. A study of ULXs has determined that very few X-ray sources with luminosity greater than 1040 erg s−1 remain after ~15 Myr and few remain after ~30 Myr. 11. In the Cartwheel galaxy, it appears that a shock wave is moving radially outward in the disk. 9 sources of the 21 detected in the Chandra im ...
... 10. A study of ULXs has determined that very few X-ray sources with luminosity greater than 1040 erg s−1 remain after ~15 Myr and few remain after ~30 Myr. 11. In the Cartwheel galaxy, it appears that a shock wave is moving radially outward in the disk. 9 sources of the 21 detected in the Chandra im ...
Stellar Remnants - Sierra College Astronomy Home Page
... Earth’s), and a teaspoon of white dwarf material would weigh 2 tons. ...
... Earth’s), and a teaspoon of white dwarf material would weigh 2 tons. ...
The Korean 1592--1593 Record of a Guest Star: Animpostor`of the
... During the last thousand years, five supernova (SN) events in the Milky Way have been witnessed and recorded in history books of East Asian and/or European countries: SN 1006, 1054, 1181, 1572, and 1604 (Stephenson & Green 2002). Each of them was visible to the naked eye in the night sky over a peri ...
... During the last thousand years, five supernova (SN) events in the Milky Way have been witnessed and recorded in history books of East Asian and/or European countries: SN 1006, 1054, 1181, 1572, and 1604 (Stephenson & Green 2002). Each of them was visible to the naked eye in the night sky over a peri ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.