Astrophysics notes - School
... indicate the greatest magnitude) Most modern stars are plotted on the graph based upon their luminosity and surface temperature. Main Sequence stars are the most common; these are shown in the central curve of the graph which extends from highly luminous blue (top left) to the to very dim red (botto ...
... indicate the greatest magnitude) Most modern stars are plotted on the graph based upon their luminosity and surface temperature. Main Sequence stars are the most common; these are shown in the central curve of the graph which extends from highly luminous blue (top left) to the to very dim red (botto ...
Astronomy_Stellar_Evolution_and_Type_II_Supernovae_Exam
... 12) 200,000 light years away the Small Magellanic Cloud is a ‘little brother’ to our Milky Way. What “super-bubble rich” component of this cloud is particularly useful in the study of Stellar Life Cycles? 13) This Nebula in the Sagittarius arm of our Milky Way Galaxy is actually just one of six brig ...
... 12) 200,000 light years away the Small Magellanic Cloud is a ‘little brother’ to our Milky Way. What “super-bubble rich” component of this cloud is particularly useful in the study of Stellar Life Cycles? 13) This Nebula in the Sagittarius arm of our Milky Way Galaxy is actually just one of six brig ...
Whiteq
... that of normal stars. Sirius B has a diameter of 19,000 miles, compared to the earth's diameter of 7900 miles. The smallest white dwarves yet observed are believed to have diameters in the range of 1000 miles. White dwarves are under-luminous compared to normal stars. Sirius B has an absolute magnit ...
... that of normal stars. Sirius B has a diameter of 19,000 miles, compared to the earth's diameter of 7900 miles. The smallest white dwarves yet observed are believed to have diameters in the range of 1000 miles. White dwarves are under-luminous compared to normal stars. Sirius B has an absolute magnit ...
88K PDF file
... 3. Chapter 12, Question 5: Albiero, a star in the constellation Cygnus, is a binary system whose components are easily separated in a small amateur telescope. Viewers describe the brighter star as “golden” and the fainter one as “sapphire blue” (a) What does this tell you about the relative tempera ...
... 3. Chapter 12, Question 5: Albiero, a star in the constellation Cygnus, is a binary system whose components are easily separated in a small amateur telescope. Viewers describe the brighter star as “golden” and the fainter one as “sapphire blue” (a) What does this tell you about the relative tempera ...
1. This question is about some of the properties of Barnard`s star
... spectrum and temperature of a certain star are used to determine its luminosity to be approximately 5.0 1031 W. The apparent brightness of the star is 1.4 10–9 W m–2. These data can be used to determine the distance of the star from Earth. (i) ...
... spectrum and temperature of a certain star are used to determine its luminosity to be approximately 5.0 1031 W. The apparent brightness of the star is 1.4 10–9 W m–2. These data can be used to determine the distance of the star from Earth. (i) ...
2. A giant hand took one of the planets discovered
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
ASTR3007/4007/6007, Class 1: Observing the Stars 23 February
... A low value of J − K is the opposite. Thus moving to the right on this diagram corresponds to getting redder, and moving left corresponds to getting bluer. The value of J − K is our proxy for temperature. The first thing to notice about the diagram is that the stars do not fall anything like random ...
... A low value of J − K is the opposite. Thus moving to the right on this diagram corresponds to getting redder, and moving left corresponds to getting bluer. The value of J − K is our proxy for temperature. The first thing to notice about the diagram is that the stars do not fall anything like random ...
Distance to the SMC
... Shapley in his calibration must be about 1.5 magnitudes fainter than the spiral arm Cepheids observed by Leavitt. That is, because Shapley based his scale on intrinsically fainter Population II stars, his scale needed to be adjusted to accommodate the intrinsically brighter Population I stars studie ...
... Shapley in his calibration must be about 1.5 magnitudes fainter than the spiral arm Cepheids observed by Leavitt. That is, because Shapley based his scale on intrinsically fainter Population II stars, his scale needed to be adjusted to accommodate the intrinsically brighter Population I stars studie ...
Climbing the Distance Ladder
... Rung #2: We find the distance to relatively nearby stars by measuring their parallax. ...
... Rung #2: We find the distance to relatively nearby stars by measuring their parallax. ...
Reflecting telescopes - School
... indicating a stars magnitude; apparent magnitude and absolute magnitude. The scale we use to measure magnitude is based on that created by the ancient Greeks which ran from 1 to 6. On the ancient Greek scale 1 was the brightest star they could view and 6 was the dimmest. The problem with this scale ...
... indicating a stars magnitude; apparent magnitude and absolute magnitude. The scale we use to measure magnitude is based on that created by the ancient Greeks which ran from 1 to 6. On the ancient Greek scale 1 was the brightest star they could view and 6 was the dimmest. The problem with this scale ...
Eruptive Variables - Scientific Research Publishing
... As regards the conditions of equilibrium of a star, it is necessary to take account the radiation pressure. The formulae from the theory enable in to calculate what proportion of the weight of the stellar mass is borne by the radiation pressure, and what part being supported by the hot gases pressur ...
... As regards the conditions of equilibrium of a star, it is necessary to take account the radiation pressure. The formulae from the theory enable in to calculate what proportion of the weight of the stellar mass is borne by the radiation pressure, and what part being supported by the hot gases pressur ...
Determining the Sizes of Stars Using the HR Diagram
... ● White Dwarfs: White dwarfs are the end states of stars less than around 6 times the mass of the Sun. The white dwarf is the core of the star that is left after episodes of mass loss causes the star to eject its outer layers, which continue expanding out into space to form a planetary nebulae. For ...
... ● White Dwarfs: White dwarfs are the end states of stars less than around 6 times the mass of the Sun. The white dwarf is the core of the star that is left after episodes of mass loss causes the star to eject its outer layers, which continue expanding out into space to form a planetary nebulae. For ...
Observations of V838 Mon light echo
... Evolutionary tracks from Schaller et al. (1992), Y=0.300, Z=0.020. ...
... Evolutionary tracks from Schaller et al. (1992), Y=0.300, Z=0.020. ...
NGC 3370 Spiral Galaxy
... star that is leaving the main-sequence to reach the tip of the red giant branch. This is a long time by most standards. But it is short compared to the 12 billion years on the mainsequence. • It is only 8% of the main-sequence lifetime. • Although the expansion is slow for these stars, they are not ...
... star that is leaving the main-sequence to reach the tip of the red giant branch. This is a long time by most standards. But it is short compared to the 12 billion years on the mainsequence. • It is only 8% of the main-sequence lifetime. • Although the expansion is slow for these stars, they are not ...
death_low_mass
... star that is leaving the main-sequence to reach the tip of the red giant branch. This is a long time by most standards. But it is short compared to the 12 billion years on the mainsequence. • It is only 8% of the main-sequence lifetime. • Although the expansion is slow for these stars, they are not ...
... star that is leaving the main-sequence to reach the tip of the red giant branch. This is a long time by most standards. But it is short compared to the 12 billion years on the mainsequence. • It is only 8% of the main-sequence lifetime. • Although the expansion is slow for these stars, they are not ...
Auriga (constellation)
Auriga is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Located north of the celestial equator, its name is the Latin word for ""charioteer"", associating it with various mythological charioteers, including Erichthonius and Myrtilus. Auriga is most prominent during winter evenings in the Northern Hemisphere, along with the five other constellations that have stars in the Winter Hexagon asterism. Because of its northern declination, Auriga is only visible in its entirety as far as 34° south; for observers farther south it lies partially or fully below the horizon. A large constellation, with an area of 657 square degrees, it is half the size of the largest constellation, Hydra.Its brightest star, Capella, is an unusual multiple star system among the brightest stars in the night sky. Beta Aurigae is an interesting variable star in the constellation; Epsilon Aurigae, a nearby eclipsing binary with an unusually long period, has been studied intensively. Because of its position near the winter Milky Way, Auriga has many bright open clusters in its borders, including M36, M37, and M38, popular targets for amateur astronomers. In addition, it has one prominent nebula, the Flaming Star Nebula, associated with the variable star AE Aurigae.In Chinese mythology, Auriga's stars were incorporated into several constellations, including the celestial emperors' chariots, made up of the modern constellation's brightest stars. Auriga is home to the radiant for the Aurigids, Zeta Aurigids, Delta Aurigids, and the hypothesized Iota Aurigids.