Lecture 13 Main Sequence and Low Mass Evolution
... young as they only live for a few Million years. • You can’t tell how old an M dwarf is because their lives can be so long. • The Sun is ~ 5 Billion years old, so it will last only for ~ 5 Billion years longer. ...
... young as they only live for a few Million years. • You can’t tell how old an M dwarf is because their lives can be so long. • The Sun is ~ 5 Billion years old, so it will last only for ~ 5 Billion years longer. ...
Chap. 2: Known the Heavens
... – As the Earth spins on its axis, the surface spends more than 12 hours in the sunlight – The days are long and the nights are short (2) The Sunlight heats the surface more efficiently – the Sun is high in the sky – sunlight strikes the ground at a nearly perpendicular angle that heats the ground ef ...
... – As the Earth spins on its axis, the surface spends more than 12 hours in the sunlight – The days are long and the nights are short (2) The Sunlight heats the surface more efficiently – the Sun is high in the sky – sunlight strikes the ground at a nearly perpendicular angle that heats the ground ef ...
The Milky Way: Spiral galaxies:
... on average, a single hydrogen atom will take 107 years to decay! The probability of an absorption is even rarer. •! HI gas mass is directly proportional to 21 cm line intensity •! HI disk is much more extended than optical light, typically out to 2R25 sometimes farther •! The radial motion of the 21 ...
... on average, a single hydrogen atom will take 107 years to decay! The probability of an absorption is even rarer. •! HI gas mass is directly proportional to 21 cm line intensity •! HI disk is much more extended than optical light, typically out to 2R25 sometimes farther •! The radial motion of the 21 ...
The Hidden Lives of Galaxies NSTA 2001
... What are the characteristics of the stars that do not conform to the graph’s trend? In terms of the graph’s trend, is our sun typical or exceptional? If you replaced the temperature scale on the graph’s x-axis with a color scale, which color would be closest to the graph’s origin and which would far ...
... What are the characteristics of the stars that do not conform to the graph’s trend? In terms of the graph’s trend, is our sun typical or exceptional? If you replaced the temperature scale on the graph’s x-axis with a color scale, which color would be closest to the graph’s origin and which would far ...
The Relationship Between a Star`s Brightness and its Distance
... Ohio University - Lancaster Campus Spring 2009 PSC 100 ...
... Ohio University - Lancaster Campus Spring 2009 PSC 100 ...
Universe 8e Lecture Chapter 24 Galaxies
... Elliptical galaxies are nearly devoid of interstellar gas and dust, and so star formation is severely inhibited. Lenticular galaxies are intermediate between spiral and elliptical galaxies. Irregular galaxies have ill-defined, asymmetrical shapes. They are often found associated with other galaxies. ...
... Elliptical galaxies are nearly devoid of interstellar gas and dust, and so star formation is severely inhibited. Lenticular galaxies are intermediate between spiral and elliptical galaxies. Irregular galaxies have ill-defined, asymmetrical shapes. They are often found associated with other galaxies. ...
GAIA Composition, Formation and Evolution of our Galaxy
... GAIA will determine: – when the stars in the Milky Way formed – when and how the Milky Way was assembled – how dark matter in the Milky Way is distributed ...
... GAIA will determine: – when the stars in the Milky Way formed – when and how the Milky Way was assembled – how dark matter in the Milky Way is distributed ...
Leo Powerpoint
... Regulus, shining at the heart of Leo the Lion, is near the end of the list of first magnitude stars. At a distance of only 79 light years, it shines in our sky at magnitude 1.35. The Latin name means "the little king," the reference to a kingly star going back to ancient times. Regulus marks the end ...
... Regulus, shining at the heart of Leo the Lion, is near the end of the list of first magnitude stars. At a distance of only 79 light years, it shines in our sky at magnitude 1.35. The Latin name means "the little king," the reference to a kingly star going back to ancient times. Regulus marks the end ...
Gravitational redshifts
... For a few bright host stars, already current facilities, such as UVES @ VLT, permit reconstructions of stellar surface spectra, also for single stronger lines. Signatures of weaker photospheric lines require averaging over many similar ones. Improved possibilities will come once ongoing exoplanet se ...
... For a few bright host stars, already current facilities, such as UVES @ VLT, permit reconstructions of stellar surface spectra, also for single stronger lines. Signatures of weaker photospheric lines require averaging over many similar ones. Improved possibilities will come once ongoing exoplanet se ...
The Ultraluminous X-ray Source in Holmberg IX and its Environment
... IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the observed emission lines (widths and ratios) we find that the structure is due to collisional excit ...
... IX, a dwarf galaxy near M81. The ULX has an average X-ray luminosity of some 1040 erg/s. It is located in a huge (400pc × 300pc) ionized nebula being much larger than normal supernova remnants. From the observed emission lines (widths and ratios) we find that the structure is due to collisional excit ...
9J Gravity and Space
... A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. Ancient farmers created imaginary images out of stars to keep track of the seasons and know when to plant and harvest crops. There are ...
... A constellation is a group of stars that make an imaginary shape in the night sky. They are usually named after mythological characters, people, animals and objects. Ancient farmers created imaginary images out of stars to keep track of the seasons and know when to plant and harvest crops. There are ...
June - astra
... up, it is either above or below the Sun, so we don't see it. We see it only if at just that time in its orbit, it happens to be crossing Earth's orbit. Also, neither orbit is exactly circular, which throws off the rhythm of the dance just a bit more. ...
... up, it is either above or below the Sun, so we don't see it. We see it only if at just that time in its orbit, it happens to be crossing Earth's orbit. Also, neither orbit is exactly circular, which throws off the rhythm of the dance just a bit more. ...
Slide 1
... The redshift (z) of a quasar is a measure of how far away it is. 3C 273 has z=0.15, which corresponds to a distance of about 2 billion light years. We are seeing the object as it looked 2 billion years ago! ...
... The redshift (z) of a quasar is a measure of how far away it is. 3C 273 has z=0.15, which corresponds to a distance of about 2 billion light years. We are seeing the object as it looked 2 billion years ago! ...
ph512-11-lec5
... Astrometry is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the future, the information obtained by astrometric measure ...
... Astrometry is the branch of astronomy that relates to precise measurements and explanations of the positions and movements of stars and other celestial bodies. Although once thought of as an esoteric field with little useful application for the future, the information obtained by astrometric measure ...
Fixed Stars
... the planets Vulcan and Pluto, to planet Earth (which Itself is on Ray three, relative to the other planets in our Solar System. Text and illustrations by Peter Fich Christiansen - May 23rd, 2008 See also website: www.birgittefich.dk ...
... the planets Vulcan and Pluto, to planet Earth (which Itself is on Ray three, relative to the other planets in our Solar System. Text and illustrations by Peter Fich Christiansen - May 23rd, 2008 See also website: www.birgittefich.dk ...
PowerPoint
... 2. mean distance between the Sun and the Earth. 3. distance traveled by light in one parsec 4. distance traveled by one astronaut at the speed of light. 5. distance traveled by light in one year. ...
... 2. mean distance between the Sun and the Earth. 3. distance traveled by light in one parsec 4. distance traveled by one astronaut at the speed of light. 5. distance traveled by light in one year. ...
Deep Infrared Images of Star-Forming - University of Missouri
... be 460 light years, or 140 parsecs, away. The cloud complex consists of a number of dark clouds and when measured in the CO molecule is approximately 104 M (de Geus, Bronfman, & Thaddeus 1989). At the center of cloud are several cold, dense cores with active star formation. Star formation in Rho Op ...
... be 460 light years, or 140 parsecs, away. The cloud complex consists of a number of dark clouds and when measured in the CO molecule is approximately 104 M (de Geus, Bronfman, & Thaddeus 1989). At the center of cloud are several cold, dense cores with active star formation. Star formation in Rho Op ...
THE UNIVERSE - - GRADE 9, UNIT 4 (4 weeks)
... 3. Technology provides the basis for many new discoveries related to space and the universe, including - a. visual radio and x-ray telescopes collect information across the entire electromagnetic spectrum b. computers are used to manage data and complicated computations c. space probes send back dat ...
... 3. Technology provides the basis for many new discoveries related to space and the universe, including - a. visual radio and x-ray telescopes collect information across the entire electromagnetic spectrum b. computers are used to manage data and complicated computations c. space probes send back dat ...
Galaxies
... This is M31, the Andromeda galaxy. The light has taken 2.2 million years to get to us and is 200,000 light years across! It was named ‘little cloud’ by the Persian astronomer Abdal-Rahman-al-Sufi in 964 AD and is one of the local group of galaxies. ...
... This is M31, the Andromeda galaxy. The light has taken 2.2 million years to get to us and is 200,000 light years across! It was named ‘little cloud’ by the Persian astronomer Abdal-Rahman-al-Sufi in 964 AD and is one of the local group of galaxies. ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.