Infinity Express
... The information and activities presented in the Infinity Express Teacher’s Guide have been adapted for use and distribution by OMSI from the following: Smithsonian National Air and Space Museum GLOSSARY ...
... The information and activities presented in the Infinity Express Teacher’s Guide have been adapted for use and distribution by OMSI from the following: Smithsonian National Air and Space Museum GLOSSARY ...
Guide to the Stars Poster PDF
... estimate that the Milky Way contains about 100 billion stars. Recently, however, this number was upped by about a billion after the discovery that very old, nearly invisible stars had escaped earlier detections. The Milky Way is believed to contain four major spiral arms, all of which start at the g ...
... estimate that the Milky Way contains about 100 billion stars. Recently, however, this number was upped by about a billion after the discovery that very old, nearly invisible stars had escaped earlier detections. The Milky Way is believed to contain four major spiral arms, all of which start at the g ...
Universe, Galaxies, Solar System
... Many scientists believe the Universe formed about 13.8 billion years ago. It is thought that the Universe started as a single point of extremely dense mass about the size of a dime, and when the energy could not be contained anymore, it expanded into the Universe we ...
... Many scientists believe the Universe formed about 13.8 billion years ago. It is thought that the Universe started as a single point of extremely dense mass about the size of a dime, and when the energy could not be contained anymore, it expanded into the Universe we ...
Searching for the Most Distant Black Holes in the Early
... – should be strong X-ray sources (from hot gas) – should be strong infrared sources (from hot dust) – should have very faint (or none) optical emission ...
... – should be strong X-ray sources (from hot gas) – should be strong infrared sources (from hot dust) – should have very faint (or none) optical emission ...
100 million years after the Big Bang
... monitoring technique (that Jeff Cooke has used to find z 2–4 SLSNe) to search for the SLSNe • SLSNe will rise to peak from 10 – 30 days, stay there for 2 – 20 days, then decline in 20 – 100 days. In the observer frame, this is 75 – 230 day rise, 15 – 150 days near peak, and 150 – 750 day decline for ...
... monitoring technique (that Jeff Cooke has used to find z 2–4 SLSNe) to search for the SLSNe • SLSNe will rise to peak from 10 – 30 days, stay there for 2 – 20 days, then decline in 20 – 100 days. In the observer frame, this is 75 – 230 day rise, 15 – 150 days near peak, and 150 – 750 day decline for ...
Star-Formation in Close Pairs Selected from the Sloan Digital Sky
... Star formation rates (SFRs) for the volume-limited sample have been calculated from aperture corrected Hα luminosities and, where available, IRAS data. Specific star formation rates (SSFRs) were calculated by estimating galaxy masses from z-band luminosities. The r-band inverse concentration index w ...
... Star formation rates (SFRs) for the volume-limited sample have been calculated from aperture corrected Hα luminosities and, where available, IRAS data. Specific star formation rates (SSFRs) were calculated by estimating galaxy masses from z-band luminosities. The r-band inverse concentration index w ...
The Moon
... What cards fit into this category? Just one 5 There is a large area of space surrounding our galaxy. About a dozen small galaxies lie in this area. They are mostly satellites of the Milky Way All other galaxies besides the Milky Way are further ...
... What cards fit into this category? Just one 5 There is a large area of space surrounding our galaxy. About a dozen small galaxies lie in this area. They are mostly satellites of the Milky Way All other galaxies besides the Milky Way are further ...
The Milky Way
... Possible solution: Later accumulation of gas, possibly due to mergers with smaller galaxies ...
... Possible solution: Later accumulation of gas, possibly due to mergers with smaller galaxies ...
Lecture Eleven (Powerpoint format)
... The problem of determination of the Milky Way highlighted by the Curtis-Shapley debate is complex enough that it took until the late 20th century before astronomers began to conclude that our own Milky Way probably is a weakly-barred spiral itself. ...
... The problem of determination of the Milky Way highlighted by the Curtis-Shapley debate is complex enough that it took until the late 20th century before astronomers began to conclude that our own Milky Way probably is a weakly-barred spiral itself. ...
Galaxy5
... • Today, galaxy interactions between the primary spiral galaxy and its satellites are much less frequent, because there are few satellites remaining. • The Milky Way is in the process of eating a satellite galaxy today. This is the Sagittarius Dwarf galaxy. ...
... • Today, galaxy interactions between the primary spiral galaxy and its satellites are much less frequent, because there are few satellites remaining. • The Milky Way is in the process of eating a satellite galaxy today. This is the Sagittarius Dwarf galaxy. ...
lab 11 only - Penn State University
... The celestial sphere is divided up in a system like the \longitude-latitude" system on the Earth's surface. The latitude of an object in the sky is called the declination; an object (like Polaris) whose position is over the Earth's north pole has a declination of +90 degrees; an object over the sout ...
... The celestial sphere is divided up in a system like the \longitude-latitude" system on the Earth's surface. The latitude of an object in the sky is called the declination; an object (like Polaris) whose position is over the Earth's north pole has a declination of +90 degrees; an object over the sout ...
Messier 87
Messier 87 (also known as Virgo A or NGC 4486, and generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local universe, it is notable for its large population of globular clusters—M87 contains about 12,000 compared to the 150-200 orbiting the Milky Way—and its jet of energetic plasma that originates at the core and extends outward at least 1,500 parsecs (4,900 light-years), travelling at relativistic speed. It is one of the brightest radio sources in the sky, and is a popular target for both amateur astronomy observations and professional astronomy study.French astronomer Charles Messier discovered M87 in 1781, cataloguing it as a nebulous feature while searching for objects that would confuse comet hunters. The second brightest galaxy within the northern Virgo Cluster, M87 is located about 16.4 million parsecs (53.5 million light-years) from Earth. Unlike a disk-shaped spiral galaxy, M87 has no distinctive dust lanes. Instead, it has an almost featureless, ellipsoidal shape typical of most giant elliptical galaxies, diminishing in luminosity with distance from the centre. Forming around one sixth of M87's mass, the stars in this galaxy have a nearly spherically symmetric distribution, their density decreasing with increasing distance from the core. At the core is a supermassive black hole, which forms the primary component of an active galactic nucleus. This object is a strong source of multiwavelength radiation, particularly radio waves. M87's galactic envelope extends out to a radius of about 150 kiloparsecs (490,000 light-years), where it has been truncated—possibly by an encounter with another galaxy. Between the stars is a diffuse interstellar medium of gas that has been chemically enriched by elements emitted from evolved stars.