August 2015 - Shasta Astronomy Club
... other things being equal, more gravity means it can hold on to more gas, so the air there could be much thicker. If so—and remembering it’s receiving more light and heat from its star than we do—it might be suffering a runaway greenhouse effect. Or, it may not have any air at all. Or or or. Without ...
... other things being equal, more gravity means it can hold on to more gas, so the air there could be much thicker. If so—and remembering it’s receiving more light and heat from its star than we do—it might be suffering a runaway greenhouse effect. Or, it may not have any air at all. Or or or. Without ...
Last Year`s Exam, Section B
... Globular clusters are very old The Hertzsprung-Russell diagrams of globular clusters have a long red giant branch but only the bottom end of the main sequence the higher up the main sequence a star is, the more massive it is and the shorter its main ...
... Globular clusters are very old The Hertzsprung-Russell diagrams of globular clusters have a long red giant branch but only the bottom end of the main sequence the higher up the main sequence a star is, the more massive it is and the shorter its main ...
hw5
... At a time when the Earth’s atmosphere lacked ozone’s protection from ultraviolet light, the oceans provided a safe region that UV can’t penetrate. p. 458 RQ# 9 How does intelligence make a creature more likely to survive? A creature’s likelyhood of surviving changes in their environment over time de ...
... At a time when the Earth’s atmosphere lacked ozone’s protection from ultraviolet light, the oceans provided a safe region that UV can’t penetrate. p. 458 RQ# 9 How does intelligence make a creature more likely to survive? A creature’s likelyhood of surviving changes in their environment over time de ...
Question 1 The star Regulus, in the constellation Leo, appears
... . 3. active galaxies, most of whose energy is emitted by two widely spaced radio lobes. ...
... . 3. active galaxies, most of whose energy is emitted by two widely spaced radio lobes. ...
DTU_9e_ch15
... gamma-ray, X-ray, infrared, and radio wavelengths, which pass readily through intervening interstellar dust and H II regions that illuminate the spiral arms. These observations have revealed the dynamic nature of the galactic nucleus, but much about it remains unexplained. A supermassive black hole ...
... gamma-ray, X-ray, infrared, and radio wavelengths, which pass readily through intervening interstellar dust and H II regions that illuminate the spiral arms. These observations have revealed the dynamic nature of the galactic nucleus, but much about it remains unexplained. A supermassive black hole ...
Stellarium Night Sky Search Key Commands Constellations buttons
... 2. Planets in the Night Sky Are there any planets above the horizon at this time? If so, list them and in parentheses put the constellation they are currently in. [Hint: Because the solar system lies basically in one plane, all of the planets will be near the ecliptic.] ...
... 2. Planets in the Night Sky Are there any planets above the horizon at this time? If so, list them and in parentheses put the constellation they are currently in. [Hint: Because the solar system lies basically in one plane, all of the planets will be near the ecliptic.] ...
Chapter 15 THE MILKY WAY IN RELATION TO OTHER GALAXIES
... possible if the ratio between hHII and hlight depends on type (being smaller for earlier types). Now, Hodge and Kennicutt (1983) have found a general similarity between these two scalelengths. Their figure however contains mostly Sc galaxies and the Sb’s may not follow this relation. Indeed one of t ...
... possible if the ratio between hHII and hlight depends on type (being smaller for earlier types). Now, Hodge and Kennicutt (1983) have found a general similarity between these two scalelengths. Their figure however contains mostly Sc galaxies and the Sb’s may not follow this relation. Indeed one of t ...
The Marathon
... star. The last two globular clusters are M19 and M62 on the southern border of Ophiuchus. Between the constellations of Scorpius and Sagittarius are the bright open clusters M6 and M7. Both are easy binoculars targets. The big, bright, and beautiful Lagoon Nebula (M8) can be located by moving up fr ...
... star. The last two globular clusters are M19 and M62 on the southern border of Ophiuchus. Between the constellations of Scorpius and Sagittarius are the bright open clusters M6 and M7. Both are easy binoculars targets. The big, bright, and beautiful Lagoon Nebula (M8) can be located by moving up fr ...
sections 23-25 powerpoint
... Elliptical galaxy (E). A spheroidal galaxy containing millions to billions of old low-mass stars and no gas or dust. Spiral Galaxy (S). A galaxy with a spheroidal bulge of several million old low-mass stars and a flattened pancake-like disk of billions of old low-mass and young high-mass stars, alon ...
... Elliptical galaxy (E). A spheroidal galaxy containing millions to billions of old low-mass stars and no gas or dust. Spiral Galaxy (S). A galaxy with a spheroidal bulge of several million old low-mass stars and a flattened pancake-like disk of billions of old low-mass and young high-mass stars, alon ...
1” “Sky-Notes” of the Open University Astronomy Club. October 2005
... northern observers. Magnitude decreases from –0.7 (diameter 4.8”, phase 0.96) on the 2nd to –0.2 (diameter 5.8”, phase 0.76) on the 27th. ...
... northern observers. Magnitude decreases from –0.7 (diameter 4.8”, phase 0.96) on the 2nd to –0.2 (diameter 5.8”, phase 0.76) on the 27th. ...
Galaxy Formation and Evolution
... space-time structure on large scales. One can think of the cosmological framework as the stage on which galaxy formation and evolution take place. 2. Initial conditions: these were set by physical processes in the early Universe which are beyond our direct view, and which took place under conditions ...
... space-time structure on large scales. One can think of the cosmological framework as the stage on which galaxy formation and evolution take place. 2. Initial conditions: these were set by physical processes in the early Universe which are beyond our direct view, and which took place under conditions ...
has occurred over the past 14 billion years COSMIC DOWNSIZING
... they are among the most luminous galaxies in the universe. It is sobering to realize that before SCUBA became available, we did not even know that these powerful, distant systems existed! Their star formation rates are hundreds of times greater than those of present-day galaxies, another indication ...
... they are among the most luminous galaxies in the universe. It is sobering to realize that before SCUBA became available, we did not even know that these powerful, distant systems existed! Their star formation rates are hundreds of times greater than those of present-day galaxies, another indication ...
Stars, Galaxies & Universe
... Observatory • The building that houses a telescope is called an observatory. ...
... Observatory • The building that houses a telescope is called an observatory. ...
instructor notes: weeks 9/10
... Gas and Dust Properties of Galaxies. Gas and dust content increases towards “later-type” galaxies. Likewise, the content of young stars also increases monotonically towards “later” types of galaxies. The exceptions are interesting objects in their own right. ...
... Gas and Dust Properties of Galaxies. Gas and dust content increases towards “later-type” galaxies. Likewise, the content of young stars also increases monotonically towards “later” types of galaxies. The exceptions are interesting objects in their own right. ...
DAVID A. RIETHMILLER - Department of Physics and Astronomy
... My current research explores the hydrodynamic history of elliptical galaxies, simulating various prescriptions for interstellar gas cooling and AGN energy feedback against real X-ray observations of ellipticals. The goal is to isolate those prescriptions which may be plausible, and rule out those th ...
... My current research explores the hydrodynamic history of elliptical galaxies, simulating various prescriptions for interstellar gas cooling and AGN energy feedback against real X-ray observations of ellipticals. The goal is to isolate those prescriptions which may be plausible, and rule out those th ...
talk
... HST V and I band optical images ► TRGB distance (accuracy of ~ 10%) known for most galaxies First large sample of faint dwarfs with accurate distances ...
... HST V and I band optical images ► TRGB distance (accuracy of ~ 10%) known for most galaxies First large sample of faint dwarfs with accurate distances ...
SAMPLE TEST: Stars and Galaxies Multiple Choice Identify the letter
... 47. The most basic way to measure the distance to a star is ____________________. 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called _________________ ...
... 47. The most basic way to measure the distance to a star is ____________________. 48. A light-year is the distance ____________________ travels in a year. 49. Apparent magnitude refers to a star’s ____________________ as it appears from ____________________. 50. Some stars, called _________________ ...
Searching for the Most Distant Black Holes in the Early
... – Spectroscopy show that the main star revolves around their companion every few days, thus companion has mass up to 10 Msun – However, it’s invisible! - can’t be normal star – Too massive for neutron star – X-ray and UV properties can show relativistic signatures ...
... – Spectroscopy show that the main star revolves around their companion every few days, thus companion has mass up to 10 Msun – However, it’s invisible! - can’t be normal star – Too massive for neutron star – X-ray and UV properties can show relativistic signatures ...
charts_set_9
... Halo: stars and globular clusters swarm around center of Milky Way. Very elliptical orbits with random orientations. They also cross the disk. Bulge: similar to halo. Disk: rotates. ...
... Halo: stars and globular clusters swarm around center of Milky Way. Very elliptical orbits with random orientations. They also cross the disk. Bulge: similar to halo. Disk: rotates. ...
Tyler Gray - Angelfire
... incorrect by a factor of more than two, though. This error was not discovered until 1953, when the 200-inch Palomar telescope was completed and had started observing. At modern times, the Andromeda galaxy is certainly the most studied "external" galaxy. It is of particular interest because it allows ...
... incorrect by a factor of more than two, though. This error was not discovered until 1953, when the 200-inch Palomar telescope was completed and had started observing. At modern times, the Andromeda galaxy is certainly the most studied "external" galaxy. It is of particular interest because it allows ...
OUSNMAR05 - The Open University
... orientation of the map may differ from that of the observed image of the Moon depending on the type of telescope used. If you find the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent ...
... orientation of the map may differ from that of the observed image of the Moon depending on the type of telescope used. If you find the Moon too bright use a filter to reduce the glare. At times features along different parts of the limb are better presented due the effect of libration – an apparent ...
Notes 1 - cloudfront.net
... center of galaxies are the brightest far sounds sound lower than closer sounds (higher) wave lengths move the same as it reaches the eyes/ears things look bluer when you walk closer things look reder when you walk farther away hydrogen & helium make up most of the air billions of galaxies are moving ...
... center of galaxies are the brightest far sounds sound lower than closer sounds (higher) wave lengths move the same as it reaches the eyes/ears things look bluer when you walk closer things look reder when you walk farther away hydrogen & helium make up most of the air billions of galaxies are moving ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.