Star Formation
... 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to form ...
... 10 million Kelvin needed to start fusion in a million years (1/50 time taken by sun) • An M-type star less massive than our sun takes one billion years to form ...
Star Life Cycle
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
The Origin of Stars
... comes from gravitational contraction, not fusion 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it becomes a true star ...
... comes from gravitational contraction, not fusion 4) The collapsing gas becomes a young stellar object with an accretion disk and jets 4) When the young stellar object begins fusing hydrogen into helium it becomes a true star ...
VISIT TO NORMAN LOCKYER OBSERVATORY IN SIDMOUTH
... Held steady, binoculars should enable you to see Saturn's brightest moon, Titan, at magnitude 8.2. A small telescope will show the rings with magnifications of x25 or more and one of 6-8 inches aperture with a magnification of ~x200 coupled with a night of good "seeing" (when the atmosphere is calm) ...
... Held steady, binoculars should enable you to see Saturn's brightest moon, Titan, at magnitude 8.2. A small telescope will show the rings with magnifications of x25 or more and one of 6-8 inches aperture with a magnification of ~x200 coupled with a night of good "seeing" (when the atmosphere is calm) ...
Space Science Unit
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
Study Guide: Unit 1, The Universe and its Stars, HS
... Directions: Choose the alternative that best completes the statement or answers the question. 1) HS-ESS1-2 Which of the following colors has the longest wavelength? A) violet B) red C) orange D) green E) blue 2) HS-ESS1-2 Which of the following is NOT considered a form of electromagnetic radiation? ...
... Directions: Choose the alternative that best completes the statement or answers the question. 1) HS-ESS1-2 Which of the following colors has the longest wavelength? A) violet B) red C) orange D) green E) blue 2) HS-ESS1-2 Which of the following is NOT considered a form of electromagnetic radiation? ...
Basic Observations of Stars
... changing directions, expressed as angles. This is called the star’s proper motion. (To calculate the actual speeds through space, we need to know their distances as well.) The changes are more noticeable for nearby stars. A nearby object can appear to ‘whiz’ across the sky even if it is moving at mo ...
... changing directions, expressed as angles. This is called the star’s proper motion. (To calculate the actual speeds through space, we need to know their distances as well.) The changes are more noticeable for nearby stars. A nearby object can appear to ‘whiz’ across the sky even if it is moving at mo ...
Star names and magnitudes
... By grouping stars into constellations, our ancestors developed the first system for unambiguously identifying celestial sources. Now, we use co-ordinate systems based on angular distance scales. Astronomical co-ordinates ...
... By grouping stars into constellations, our ancestors developed the first system for unambiguously identifying celestial sources. Now, we use co-ordinate systems based on angular distance scales. Astronomical co-ordinates ...
Lesson 3 Power Notes Outline
... When the outer layers of the giant are lost to space, the sun will become a white dwarf and move to the lower left quadrant of the diagram. ...
... When the outer layers of the giant are lost to space, the sun will become a white dwarf and move to the lower left quadrant of the diagram. ...
Document
... Andromeda, and determined their distance. Andromeda contains a spiral-shaped galaxy that, at a distance of 2.2 million light-years, is the farthest object visible to the naked eye. He calculated that Andromeda must be at least 10 times farther away than the farthest stars in the Milky Way. The Andro ...
... Andromeda, and determined their distance. Andromeda contains a spiral-shaped galaxy that, at a distance of 2.2 million light-years, is the farthest object visible to the naked eye. He calculated that Andromeda must be at least 10 times farther away than the farthest stars in the Milky Way. The Andro ...
Lucas - WordPress.com
... Auriga is 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 in the northern Hemisphere winter sky, along with the five other constellations that have ...
... Auriga is 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 in the northern Hemisphere winter sky, along with the five other constellations that have ...
1 Ay 124 Winter 2014 – HOMEWORK #1
... Problem 1. Observing Distant Solar-type Stars Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit f ...
... Problem 1. Observing Distant Solar-type Stars Assume for the time being that the Galaxy has no dust, and that we are observing along a line of sight at b = 0 deg and l = 180 deg. We are interested in observing the most distant solar-type stars (MV ' +5.1) possible, but our apparent magnitude limit f ...
Review Questions for Exam #2
... • Sketch an H-R diagram. Label the axes and indicate the direction of increase along each axis. • Draw in the location of the main-sequence, super giants (I) the giants (III) and the white dwarfs. • On the main-sequence, indicate with an arrow the direction of increasing mass. • Given the arrow tha ...
... • Sketch an H-R diagram. Label the axes and indicate the direction of increase along each axis. • Draw in the location of the main-sequence, super giants (I) the giants (III) and the white dwarfs. • On the main-sequence, indicate with an arrow the direction of increasing mass. • Given the arrow tha ...
20 Stars/Distances/Magnitudes
... magnitude defined: 5 magnitudes separated by factor of 100 in brightness 1st magnitude 100 times brighter than 6th With this standard adopted, some stars are brighter than m = 1, many objects have negative magnitudes ...
... magnitude defined: 5 magnitudes separated by factor of 100 in brightness 1st magnitude 100 times brighter than 6th With this standard adopted, some stars are brighter than m = 1, many objects have negative magnitudes ...
The Southern Winter PDF
... of these dark clouds were cataloged by E. E. Barnard in the 1920s, and later by Beverly Lynds. In the southern hemisphere a similar but more comprehensive catalog had to await the commissioning of the UK Schmidt Telescope in the 1970s, and the first author of the southern Catalogue of 1101 Dark Clou ...
... of these dark clouds were cataloged by E. E. Barnard in the 1920s, and later by Beverly Lynds. In the southern hemisphere a similar but more comprehensive catalog had to await the commissioning of the UK Schmidt Telescope in the 1970s, and the first author of the southern Catalogue of 1101 Dark Clou ...
Answer titese questions on a piece of loose leaf paper.
... about the thumb demo we didin class.) I I . The Hcrczspiung-Russcll diagram shows the relationship between wliai two charaeteiistios of stars? 12- More than 90% of all stars arc cotisiderx;d stars and can be found in a diagonal path aaoss the center of the H-R diagram. 13. Within the main sequence, ...
... about the thumb demo we didin class.) I I . The Hcrczspiung-Russcll diagram shows the relationship between wliai two charaeteiistios of stars? 12- More than 90% of all stars arc cotisiderx;d stars and can be found in a diagonal path aaoss the center of the H-R diagram. 13. Within the main sequence, ...
Stars
... • As Earth rotates, Ursa Major, Ursa Minor, and other constellations in the northern sky circle around Polaris • Because of this, they are called circumpolar constellations. • It appears that the constellations complete one full circle in the sky in about 24 hr. as Earth rotates on its axis. ...
... • As Earth rotates, Ursa Major, Ursa Minor, and other constellations in the northern sky circle around Polaris • Because of this, they are called circumpolar constellations. • It appears that the constellations complete one full circle in the sky in about 24 hr. as Earth rotates on its axis. ...
Module G - U1_ L3 - Life Cycle of Stars
... A black hole is an invisible object with gravity so great that nothing, not even light, can escape it. Although black holes are invisible, they can be observed by the gravitational effect they have on their surroundings. Matter swirls around a black hole just before being pulled in. The matter becom ...
... A black hole is an invisible object with gravity so great that nothing, not even light, can escape it. Although black holes are invisible, they can be observed by the gravitational effect they have on their surroundings. Matter swirls around a black hole just before being pulled in. The matter becom ...
presentation source
... Hertzsprung-Russell Diagram • Fundamental tool for understanding stars. • Luminosity (or magnitude) vs Temperature (or colour or spectral type). – Main Sequence – Red Giants – White Dwarfs ...
... Hertzsprung-Russell Diagram • Fundamental tool for understanding stars. • Luminosity (or magnitude) vs Temperature (or colour or spectral type). – Main Sequence – Red Giants – White Dwarfs ...
Star Fromation and ISM
... The Formation of Stars Like the Sun At stage 6, the core reaches 10 million K, and nuclear fusion begins. The protostar has become a star. The star continues to contract and increase in temperature, until it is in equilibrium. This is stage 7: the star has reached the main sequence and will remain ...
... The Formation of Stars Like the Sun At stage 6, the core reaches 10 million K, and nuclear fusion begins. The protostar has become a star. The star continues to contract and increase in temperature, until it is in equilibrium. This is stage 7: the star has reached the main sequence and will remain ...
The Constellation Lepus, the Hare
... Lepus is a constellation lying just south of the celestial equator, immediately south of Orion. Its name is Latin for hare. Although the hare does not represent any particular figure in Greek mythology, Lepus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remai ...
... Lepus is a constellation lying just south of the celestial equator, immediately south of Orion. Its name is Latin for hare. Although the hare does not represent any particular figure in Greek mythology, Lepus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remai ...
H-R Diagram - SFA Physics
... stars in the night sky. Transfer the main sequence curve from Figure 1 onto Figure 2. ...
... stars in the night sky. Transfer the main sequence curve from Figure 1 onto Figure 2. ...
Life Cycle of Stars
... • Luminosity – brightness, or energy output of a star per second • Temperature- in stars, the temperature determines the luminosity and the rate of nuclear reactions (fusion) ...
... • Luminosity – brightness, or energy output of a star per second • Temperature- in stars, the temperature determines the luminosity and the rate of nuclear reactions (fusion) ...
Serpens
Serpens (""the Serpent"", Greek Ὄφις) is a constellation of the northern hemisphere. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations defined by the International Astronomical Union. It is unique among the modern constellations in being split into two non-contiguous parts, Serpens Caput (Serpent's Head) to the west and Serpens Cauda (Serpent's Tail) to the east. Between these two halves lies the constellation of Ophiuchus, the ""Serpent-Bearer"". In figurative representations, the body of the serpent is represented as passing behind Ophiuchus between Mu Serpentis in Serpens Caput and Nu Serpentis in Serpens Cauda.The brightest star in Serpens is the red giant star Alpha Serpentis, or Unukalhai, in Serpens Caput, with an apparent magnitude of 2.63. Also located in Serpens Caput are the naked-eye globular cluster Messier 5 and the naked-eye variables R Serpentis and Tau4 Serpentis. Notable extragalactic objects include Seyfert's Sextet, one of the densest galaxy clusters known; Arp 220, the prototypical ultraluminous infrared galaxy; and Hoag's Object, the most famous of the very rare class of galaxies known as ring galaxies.Part of the Milky Way's galactic plane passes through Serpens Cauda, which is therefore rich in galactic deep-sky objects, such as the Eagle Nebula (IC 4703) and its associated star cluster Messier 16. The nebula measures 70 light-years by 50 light-years and contains the Pillars of Creation, three dust clouds that became famous for the image taken by the Hubble Space Telescope. Other striking objects include the Red Square Nebula, one of the few objects in astronomy to take on a square shape; and Westerhout 40, a massive nearby star-forming region consisting of a molecular cloud and an H II region.