Mass and composition determine most of the properties of a star
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
... across the street, which light would appear brighter? You cannot tell by looking in the sky how bright a star truly is. The farther away the star is, the less bright it will appear. ...
Final Exam Space Unit Review
... (combine reflecting mirrors and refracting lenses). ☐ Study Fig. 5.14 p. 370. Incoming light from the object you are viewing comes in from the left. Further optical telescope advances 1. Combining Telescopes: Now powerful computers can combine images from 2 or more telescopes (interferometry). The t ...
... (combine reflecting mirrors and refracting lenses). ☐ Study Fig. 5.14 p. 370. Incoming light from the object you are viewing comes in from the left. Further optical telescope advances 1. Combining Telescopes: Now powerful computers can combine images from 2 or more telescopes (interferometry). The t ...
Physics 1025: Lecture 17 Sun (cont.), Stellar Distances, Parallax
... Another distance used in astronomy is the light year, the distance light travels in one year. 1 light year = 180,000 miles/ sec x 3600 sec/hr x 24 hr/day x 365.25 days/year = 5.88 x 1012 miles, not too dissimilar to a parsec (pc). Therefore 1 parsec = 3.26 lt years. If a star is 3¼ light years away, ...
... Another distance used in astronomy is the light year, the distance light travels in one year. 1 light year = 180,000 miles/ sec x 3600 sec/hr x 24 hr/day x 365.25 days/year = 5.88 x 1012 miles, not too dissimilar to a parsec (pc). Therefore 1 parsec = 3.26 lt years. If a star is 3¼ light years away, ...
Lec12
... squeezed as they move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
... squeezed as they move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
4. Survey Observations
... earlier for the same star to be on your meridian – each month, you must observe 2 hours earlier for the same star to be on you meridian (a given RA is on your meridian 2 hours earlier each month) • Thus, the airmass of a star changes through the year as the star becomes easier or harder to observe • ...
... earlier for the same star to be on your meridian – each month, you must observe 2 hours earlier for the same star to be on you meridian (a given RA is on your meridian 2 hours earlier each month) • Thus, the airmass of a star changes through the year as the star becomes easier or harder to observe • ...
Let f (x) = log x , Let f (x) = loga x , x>0 . (a) Write down the value of (i
... Answer: ________!! ...
... Answer: ________!! ...
PPT - McMaster Physics and Astronomy
... blue, cool is red). L varies by factor of 100 million! -Plot L of a star vs. its colour on a diagram: find that these are correlated with one another. Known as “colour-magnitude diagram”. - Most stars occur along “main-sequence”, where they burn hydrogen. ...
... blue, cool is red). L varies by factor of 100 million! -Plot L of a star vs. its colour on a diagram: find that these are correlated with one another. Known as “colour-magnitude diagram”. - Most stars occur along “main-sequence”, where they burn hydrogen. ...
Section 1 Notes on Stars
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
Document
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
... 6. What do star clusters tell us about the formation of stars? 7. Where in the Galaxy does star formation take place? 8. How can the death of one star trigger the birth of many other stars? ...
Transcript - Chandra X
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
lecture
... • Because the gas hits the star before it reaches a stable orbital speed, there is no way to tell where the gas is in the system. • Therefore the only way to map it is with the velocities from the Doppler Shift and phases from the timing of the observations. • Make a contour map using velocity and p ...
... • Because the gas hits the star before it reaches a stable orbital speed, there is no way to tell where the gas is in the system. • Therefore the only way to map it is with the velocities from the Doppler Shift and phases from the timing of the observations. • Make a contour map using velocity and p ...
Powerpoint file
... • Most challenging observational technique due to proximity, contrast levels and atmospheric effects (AO, coronagraphy,..) • Candidates appeared at large (~100 AU) separations and mass determination is limited by reliability of evolutionary models (if no other information) • More robust detections ( ...
... • Most challenging observational technique due to proximity, contrast levels and atmospheric effects (AO, coronagraphy,..) • Candidates appeared at large (~100 AU) separations and mass determination is limited by reliability of evolutionary models (if no other information) • More robust detections ( ...
Luminosity and brightness
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
... (b) the distance of the star from the observer on the Earth If we have two stars of the same luminosity with one star double the distance of the other from the Earth the closer star will look four times brighter. It obeys the inverse square law. The photograph shows the Pleiades star cluster. The br ...
NEUTRON STAR?
... • We will be holding an optional observing night this coming Tuesday, Nov. 8th from 7-9 p.m. on the Science Center roof. We'll be looking at Mars, stellar clusters, binary stars, and more... • Because we live in lovely cloudy Boston, we have to prepare for inclement weather. We will make an announce ...
... • We will be holding an optional observing night this coming Tuesday, Nov. 8th from 7-9 p.m. on the Science Center roof. We'll be looking at Mars, stellar clusters, binary stars, and more... • Because we live in lovely cloudy Boston, we have to prepare for inclement weather. We will make an announce ...
Life Cycles of Stars
... because they are the densest objects known except for black holes. A teaspoon of neutron star material weighs 100 million tons. ...
... because they are the densest objects known except for black holes. A teaspoon of neutron star material weighs 100 million tons. ...
Adventurer Pathfinder
... Sunspots are dark spots on the sun’s surface. Some spots are as large as 50,000 miles across and up to 2,000° cooler than the rest of the sun. These spots are caused by solar flares, or small explosions on the sun. Solar flares shoot energy into space. When the energy hits the earth, it causes magne ...
... Sunspots are dark spots on the sun’s surface. Some spots are as large as 50,000 miles across and up to 2,000° cooler than the rest of the sun. These spots are caused by solar flares, or small explosions on the sun. Solar flares shoot energy into space. When the energy hits the earth, it causes magne ...
GEARS Workshop Monday - Georgia Southern University
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
... The Chandra data shows bright X-ray sources in this field, most of which are young stars. In this image, red, green, and blue represent low, medium, and high energy X-rays. The Chandra data have been overlaid on the Hubble Space Telescope image to show the context of these X-ray data. Very few X-ray ...
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.