Galaxy Far Far Away ppt
... Nucleus is the most mysterious part Evidence of a Supermassive Black Hole in Saggitarius: ...
... Nucleus is the most mysterious part Evidence of a Supermassive Black Hole in Saggitarius: ...
Galactic Star Formation Science with Integral Field
... Emission, seen in scattered light images of T Tauri stars Gas in Circumstellar Disks – As much as 99% of the mass in circumstellar disks is in GAS not DUST Disk Gas is traced by: • mm molecular observations of cold outer disk gas • IR emission species trace warm gas from ~terrestrial regions of disk ...
... Emission, seen in scattered light images of T Tauri stars Gas in Circumstellar Disks – As much as 99% of the mass in circumstellar disks is in GAS not DUST Disk Gas is traced by: • mm molecular observations of cold outer disk gas • IR emission species trace warm gas from ~terrestrial regions of disk ...
1 Do Massive Stars Trigger New Waves of Star Formation
... the Milky Way and allowed astronomers to look into these unique areas of our Galaxy. Spitzer’s landmark mission, the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) in particular, has opened up a new world to astronomers. It has now become possible to pin-point specific objects th ...
... the Milky Way and allowed astronomers to look into these unique areas of our Galaxy. Spitzer’s landmark mission, the Galactic Legacy Infrared Mid-Plane Survey Extraordinaire (GLIMPSE) in particular, has opened up a new world to astronomers. It has now become possible to pin-point specific objects th ...
High Mass Stars
... – From H-R diagram its luminosity is 100000 times greater than the Sun’s. – It therefore burns fuel (uses it’s mass) 100000 times faster than the Sun. – It has 25 times the mass of the Sun so its lifetime will be 25/100000 = 0.00025 times than the Sun’s lifetime = 2.5 million years. ...
... – From H-R diagram its luminosity is 100000 times greater than the Sun’s. – It therefore burns fuel (uses it’s mass) 100000 times faster than the Sun. – It has 25 times the mass of the Sun so its lifetime will be 25/100000 = 0.00025 times than the Sun’s lifetime = 2.5 million years. ...
Famous Constellations
... How are they useful? • They help people find there way at night • So we know when to harvest • To travel across oceans • Help our ancestors make calendars • Pictures in the sky help us remember where the stars are located ...
... How are they useful? • They help people find there way at night • So we know when to harvest • To travel across oceans • Help our ancestors make calendars • Pictures in the sky help us remember where the stars are located ...
Properties of Stars - Indiana State University
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
Lecture5 - Tufts Institute of Cosmology
... Irony of the Debate • Sun moved away from the Center of the Galaxy – Shapley is right • There are other galaxies outside our own – Curtis was right BUT: Both were wrong too about different aspects of the debate. ...
... Irony of the Debate • Sun moved away from the Center of the Galaxy – Shapley is right • There are other galaxies outside our own – Curtis was right BUT: Both were wrong too about different aspects of the debate. ...
Astronomical Observations (Fall 2004) Final Exam
... count rate is 16 s-1. Assuming that the noise is random and that equal time is spent observing on and off the source, find the total integration time needed to detect a source whose strength is 1% of the background if the criterion for detection is that the signal-to-noise ratio is 3. (10 pts) ...
... count rate is 16 s-1. Assuming that the noise is random and that equal time is spent observing on and off the source, find the total integration time needed to detect a source whose strength is 1% of the background if the criterion for detection is that the signal-to-noise ratio is 3. (10 pts) ...
chapter 14 - Astronomy
... 3. A brown dwarf is a star-like object whose mass is too small to sustain nuclear fusion. Probable limits of mass for brown dwarfs are from 0.013 to 0.08 solar masses. (Jupiter’s mass is about 0.001 solar masses.) After a brief initial phase where some deuterium is burned, brown dwarfs continue to c ...
... 3. A brown dwarf is a star-like object whose mass is too small to sustain nuclear fusion. Probable limits of mass for brown dwarfs are from 0.013 to 0.08 solar masses. (Jupiter’s mass is about 0.001 solar masses.) After a brief initial phase where some deuterium is burned, brown dwarfs continue to c ...
Stefan-Boltzmann Law Problems
... 6. A star is five times as luminous as the Sun and has a surface temperature of 98,000 K. What is its radius, compared to that of the Sun? Again, this is a Stefan-Boltzmann problem (luminosity, radius and temperature) that will be most easily solved using a ratio approach. See the first problem to r ...
... 6. A star is five times as luminous as the Sun and has a surface temperature of 98,000 K. What is its radius, compared to that of the Sun? Again, this is a Stefan-Boltzmann problem (luminosity, radius and temperature) that will be most easily solved using a ratio approach. See the first problem to r ...
The Sun and the Stars
... Transits occur when the planet passes between the Earth and Sun. NB. Transits of Venus are rare, because the orbit of Venus is inclined to the ecliptic (the plane of the Earth’s orbit) by 3.394 degrees. As Venus passes between Earth and Sun, Venus occults (blocks) the light from the solar disc, appe ...
... Transits occur when the planet passes between the Earth and Sun. NB. Transits of Venus are rare, because the orbit of Venus is inclined to the ecliptic (the plane of the Earth’s orbit) by 3.394 degrees. As Venus passes between Earth and Sun, Venus occults (blocks) the light from the solar disc, appe ...
Hitomi Observation of the Highly Obscured High-Mass X-ray
... power-law and three gaussians to account for the fluorescence lines. Comparing the spectral parameters with those obtained from Suzaku observation in 2006 (Barragan et al. 2009, A&A, 508, 1275), the flux of continuum and line components significantly decreased in this ten years while the equivalent ...
... power-law and three gaussians to account for the fluorescence lines. Comparing the spectral parameters with those obtained from Suzaku observation in 2006 (Barragan et al. 2009, A&A, 508, 1275), the flux of continuum and line components significantly decreased in this ten years while the equivalent ...
Lecture 3
... The design of the filters is of paramount importance when devising photometric magnitude systems. e.g. small band-passes give more spectral information but admit less flux requiring longer exposure times ...
... The design of the filters is of paramount importance when devising photometric magnitude systems. e.g. small band-passes give more spectral information but admit less flux requiring longer exposure times ...
Sun - UNT Physics
... 6. The apparent visual magnitude of star A is 2 and the apparent visual magnitude of star B is 1. Based on this information which statement below must be true? a. Star A emits more light than star B. b. Star B emits more light than star A. c. Star A is closer than star B. d. Star B is closer than st ...
... 6. The apparent visual magnitude of star A is 2 and the apparent visual magnitude of star B is 1. Based on this information which statement below must be true? a. Star A emits more light than star B. b. Star B emits more light than star A. c. Star A is closer than star B. d. Star B is closer than st ...
Chapter 2 User`s Guide to the Sky
... As you study the sky and its motions, you will be thinking of Earth as a planet rotating on its axis and moving in an orbit. The next chapter will introduce you to other impressive sky cycles: phases of the moon and eclipses. ...
... As you study the sky and its motions, you will be thinking of Earth as a planet rotating on its axis and moving in an orbit. The next chapter will introduce you to other impressive sky cycles: phases of the moon and eclipses. ...
The Milky Way - Computer Science Technology
... As you study the sky and its motions, you will be thinking of Earth as a planet rotating on its axis and moving in an orbit. The next chapter will introduce you to other impressive sky cycles: phases of the moon and eclipses. ...
... As you study the sky and its motions, you will be thinking of Earth as a planet rotating on its axis and moving in an orbit. The next chapter will introduce you to other impressive sky cycles: phases of the moon and eclipses. ...
of the Sun
... • 2-4 million years old • about 469 light-years distant • The disk is about 30 times the size of our solar system ...
... • 2-4 million years old • about 469 light-years distant • The disk is about 30 times the size of our solar system ...
PHYS-633: Problem set #0 Solutions
... c. Which result seems more “reasonable”? Briefly discuss what other physics might be important to include to understand the actual surface temperature of Earth. This apparently more realistic model thus seems to give a temperature that is much lower than the typical temperature of the actual Earth. ...
... c. Which result seems more “reasonable”? Briefly discuss what other physics might be important to include to understand the actual surface temperature of Earth. This apparently more realistic model thus seems to give a temperature that is much lower than the typical temperature of the actual Earth. ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.