Stellar Evolution
... the first distance determinations that worked out to distances beyond our Milky Way! Cepheids are up to ~ 40,000 times more luminous than our sun => can be identified in other galaxies. ...
... the first distance determinations that worked out to distances beyond our Milky Way! Cepheids are up to ~ 40,000 times more luminous than our sun => can be identified in other galaxies. ...
Folie 1 - univie.ac.at
... variations in stars brighter than visual magnitude 4.0 (and with less accuracy also down to a visual magnitude of 7.0). There are 534 stars brighter than V = 4.0 mag in the sky and observable at the proposed precision level with BRITE-Constellation. Considering the typical time scales for their vari ...
... variations in stars brighter than visual magnitude 4.0 (and with less accuracy also down to a visual magnitude of 7.0). There are 534 stars brighter than V = 4.0 mag in the sky and observable at the proposed precision level with BRITE-Constellation. Considering the typical time scales for their vari ...
Slide 1 - Beverley High School
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
Characteristics of stars
... Light-year is distance not time: example if it took 1 hour to ride a bike 10 km, you could say it took you 1 bikeyear to get to the mall. ...
... Light-year is distance not time: example if it took 1 hour to ride a bike 10 km, you could say it took you 1 bikeyear to get to the mall. ...
Planisphere Exercise
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
... located just beneath the brass fastener that holds the star wheel to the frame of the planisphere. As the night progresses, which way do the stars appear to move around the North Star (which is hidden under the brass fastener) – clockwise or counterclockwise? As the night progresses, how do stars ap ...
Stars
... • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left be ...
... • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left be ...
Stars and Constellations
... Scientists measure absolute magnitude by determining what brightness (or apparent magnitude) a star would have if it were placed exactly 10 parsecs from Earth. A parsec is a distance of 3.26 light years. Ancient as well as modern stargazers, such as the Navajo, identified groups or patterns of stars ...
... Scientists measure absolute magnitude by determining what brightness (or apparent magnitude) a star would have if it were placed exactly 10 parsecs from Earth. A parsec is a distance of 3.26 light years. Ancient as well as modern stargazers, such as the Navajo, identified groups or patterns of stars ...
Background Information - Eu-Hou
... In order to plot a HR diagram, the temperature and luminosity of the stars need to be known. The simplest indication of a star’s temperature is its colour. A star’s colour is simply a measure of the amount of light from the star in one filter compared to another. The most common colour system is B-V ...
... In order to plot a HR diagram, the temperature and luminosity of the stars need to be known. The simplest indication of a star’s temperature is its colour. A star’s colour is simply a measure of the amount of light from the star in one filter compared to another. The most common colour system is B-V ...
The Night Sky This Month - Usk Astronomical Society
... Some say that the constellation of the Bull was depicted in caves by humans tens of thousands of years ago to the extent that even the Pleiades were shown. What is certain is that Taurus the Bull, with the Scorpion and the Lion, was portrayed over 6000 years ago in the Euphrates Valley, in ancient M ...
... Some say that the constellation of the Bull was depicted in caves by humans tens of thousands of years ago to the extent that even the Pleiades were shown. What is certain is that Taurus the Bull, with the Scorpion and the Lion, was portrayed over 6000 years ago in the Euphrates Valley, in ancient M ...
STARS Chapter 8 Section 1
... with parallax**** • Parallax is the object’s apparent shift in motion when viewed from different locations. It is an optical effect. • Astronomers can measure parallax and use it to calculate exact distances to stars. • Does the man on the right(V2) see the moon as closer or farther away than the ma ...
... with parallax**** • Parallax is the object’s apparent shift in motion when viewed from different locations. It is an optical effect. • Astronomers can measure parallax and use it to calculate exact distances to stars. • Does the man on the right(V2) see the moon as closer or farther away than the ma ...
Phobos
... get a chance to ‘peep round the edge’ of the lunar limb even more on these dates. Remember that Position Angle is measured from North through East on the face of the Moon (North=0o, East=90o, South=180o, West=270o) and it tells you where to concentrate your telescope. Mercury: pulls out to its great ...
... get a chance to ‘peep round the edge’ of the lunar limb even more on these dates. Remember that Position Angle is measured from North through East on the face of the Moon (North=0o, East=90o, South=180o, West=270o) and it tells you where to concentrate your telescope. Mercury: pulls out to its great ...
For stars
... • Rigel (m = 0.12) • Spica (m = +1.0) • Which looks brighter? Rigel BUT... It turns out that Spica actually gives off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
... • Rigel (m = 0.12) • Spica (m = +1.0) • Which looks brighter? Rigel BUT... It turns out that Spica actually gives off 1000 times more light than Rigel!! SO..If Spica is giving off more light, why would it appear dimmer in the sky here at Earth? ...
Stars
... temperature and luminosity (or absolute magnitude). Prominent stars Nearby Stars Brightest Stars 1000 pc Stars ...
... temperature and luminosity (or absolute magnitude). Prominent stars Nearby Stars Brightest Stars 1000 pc Stars ...
PPT - University of Delaware
... of the star(s) changed over time Excellent comparison between model and observation: suggests Eta Carinae is indeed a binary system ...
... of the star(s) changed over time Excellent comparison between model and observation: suggests Eta Carinae is indeed a binary system ...
Theoretical Modeling of Massive Stars Mr. Russell University of Delaware
... of the star(s) changed over time Excellent comparison between model and observation: suggests Eta Carinae is indeed a binary system ...
... of the star(s) changed over time Excellent comparison between model and observation: suggests Eta Carinae is indeed a binary system ...
Chapter 15 part 1
... The closest star to Earth (besides the Sun) is called Proxima Centauri. It has the largest known stellar parallax, 0.76'', which means that it is about 1/0.76 = 1.3 pc away— about 270,000 A.U., or 4.3 light-years. ...
... The closest star to Earth (besides the Sun) is called Proxima Centauri. It has the largest known stellar parallax, 0.76'', which means that it is about 1/0.76 = 1.3 pc away— about 270,000 A.U., or 4.3 light-years. ...
TY Course Day 2 Friday Constellations v1
... of this constellation is Aldebaran, an orange-hued, spectral class K5 III giant star. Its name is from الدبرانal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
... of this constellation is Aldebaran, an orange-hued, spectral class K5 III giant star. Its name is from الدبرانal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
Thought Question
... B. It would be -3 magnitudes brighter C. It would stay the same (its absolute magnitude is an intrinsic property of a star) ...
... B. It would be -3 magnitudes brighter C. It would stay the same (its absolute magnitude is an intrinsic property of a star) ...
Core Theme 2: Constellations
... member of this constellation is Aldebaran, an orangehued, spectral class K5 III giant star. Its name is from ان#$%& اal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
... member of this constellation is Aldebaran, an orangehued, spectral class K5 III giant star. Its name is from ان#$%& اal-dabarān, Arabic for 'the follower' (of the Pleiades). Bull’s eye. ...
The Hertzsprung-Russell Diagram
... temperatures, sizes and luminosities, which cause them to move in tracks on the H-R Diagram. After a star uses up all the hydrogen in its core, it leaves the main sequence and moves towards the red giant branch. The most massive stars may also become red supergiants, in the upper right corner of the ...
... temperatures, sizes and luminosities, which cause them to move in tracks on the H-R Diagram. After a star uses up all the hydrogen in its core, it leaves the main sequence and moves towards the red giant branch. The most massive stars may also become red supergiants, in the upper right corner of the ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.