A scenario of planet erosion by coronal radiation*
... distribution observed in Fig. 2, confirms that FX is the main variable, with few massive planets surviving exposure to high radiation as discussed below. The distribution of density with mass displayed in Fig. 3 is also consistent with the effects of erosion, since planets with higher densities would ...
... distribution observed in Fig. 2, confirms that FX is the main variable, with few massive planets surviving exposure to high radiation as discussed below. The distribution of density with mass displayed in Fig. 3 is also consistent with the effects of erosion, since planets with higher densities would ...
Doppler Effect
... What is meant by a red shift or a blue shift? Given the spectrum of a star and a reference spectrum, identify if the star's spectrum is red or blue shifted, whether the Earth and the star are moving toward or away from each other, and whether the Earth and the star have large or small relative s ...
... What is meant by a red shift or a blue shift? Given the spectrum of a star and a reference spectrum, identify if the star's spectrum is red or blue shifted, whether the Earth and the star are moving toward or away from each other, and whether the Earth and the star have large or small relative s ...
Lec09_ch11_lifecycleofstars
... • An H-R census of the Globular cluster stars reveals the age of the cluster – since the globular cluster stars are gravitationally bound close together, they are the same distance from us • use apparent magnitude ...
... • An H-R census of the Globular cluster stars reveals the age of the cluster – since the globular cluster stars are gravitationally bound close together, they are the same distance from us • use apparent magnitude ...
– 1 – 1. Nucleosynthetic Yields From Various Sources
... is characterized by an extremely large odd-even effect, far larger than that observed in any known Galactic star, suggesting that even in the early Universe, PISN were rare or absent. More than 50M⊙ of ...
... is characterized by an extremely large odd-even effect, far larger than that observed in any known Galactic star, suggesting that even in the early Universe, PISN were rare or absent. More than 50M⊙ of ...
ASTRONOMY 1010 – End of Semester Project Building a True
... window of Foster Hall outside the left entrance (on the south side of the building). With it should be Titan, its largest moon (which is only 0.5 mm in diameter and only 12 cm from Saturn in our model). Uranus (Scale size = 5 mm, Scale Distance = 290 m) Beginning to get really out there now. Uranus ...
... window of Foster Hall outside the left entrance (on the south side of the building). With it should be Titan, its largest moon (which is only 0.5 mm in diameter and only 12 cm from Saturn in our model). Uranus (Scale size = 5 mm, Scale Distance = 290 m) Beginning to get really out there now. Uranus ...
PDF format
... a) rotation of Earth; motion of the Sun around the center of the Milky Way; motion of Earth around the Sun b) motion of the Sun around the center of the Milky Way; motion of Earth around the Sun; rotation of Earth c) motion of Earth around the Sun; rotation of Earth; motion of the Sun around the ...
... a) rotation of Earth; motion of the Sun around the center of the Milky Way; motion of Earth around the Sun b) motion of the Sun around the center of the Milky Way; motion of Earth around the Sun; rotation of Earth c) motion of Earth around the Sun; rotation of Earth; motion of the Sun around the ...
Starspots (AIP – Klaus G
... Magnetic fields likely play an important role in almost any astrophysical target, from the early Universe to the Sun, Earth, and its environment. While numerical 3-D MHD simulations became more and more sophisticated in the previous years, magnetic-field observations are still extremely rare (except ...
... Magnetic fields likely play an important role in almost any astrophysical target, from the early Universe to the Sun, Earth, and its environment. While numerical 3-D MHD simulations became more and more sophisticated in the previous years, magnetic-field observations are still extremely rare (except ...
Lecture
... III. The Cycles of the Sun A. The Annual Motion of the Sun B. The Seasons C. The Moving Planets IV. Astronomical Influences on Earth's Climate A. The Hypothesis B. The Evidence ...
... III. The Cycles of the Sun A. The Annual Motion of the Sun B. The Seasons C. The Moving Planets IV. Astronomical Influences on Earth's Climate A. The Hypothesis B. The Evidence ...
Astrobiology: young science, old questions
... tems (data from the Extrasolar Planets Encyclo- smallest are just 8% of the Sun’s mass, below our 1 Gyr minimum age to all young stars, over paedia, http://exoplanet.eu/catalog-all.php, 15 which objects can not sustain hydrogen fusion in 10% of all stellar systems are excluded. October 2010). On ave ...
... tems (data from the Extrasolar Planets Encyclo- smallest are just 8% of the Sun’s mass, below our 1 Gyr minimum age to all young stars, over paedia, http://exoplanet.eu/catalog-all.php, 15 which objects can not sustain hydrogen fusion in 10% of all stellar systems are excluded. October 2010). On ave ...
Circumstellar
... What drives the mass loss of red supergiants and cool hypergiants ?? Pulsational instability? -- rho Cas, irregular and LPVs Non-radial pulsations and/or convective activity (starspots)? VY CMa – no general spherical outflow, looplike structures, clumps of knots, ejected at different times and from ...
... What drives the mass loss of red supergiants and cool hypergiants ?? Pulsational instability? -- rho Cas, irregular and LPVs Non-radial pulsations and/or convective activity (starspots)? VY CMa – no general spherical outflow, looplike structures, clumps of knots, ejected at different times and from ...
Our Galaxy, The Milky Way
... • There are ~ 2 1011 stars in the Galaxy • An exponential disk ~ 50 kpc in diameter and ~ 0.3 - 1 kpc thick; contains young to intermediate age stars and ISM • Nested “spheroids” of bulge and halo, containing old stars, hot gas, and dark matter • The Sun orbits around the center with V ~ 220 km/s, ...
... • There are ~ 2 1011 stars in the Galaxy • An exponential disk ~ 50 kpc in diameter and ~ 0.3 - 1 kpc thick; contains young to intermediate age stars and ISM • Nested “spheroids” of bulge and halo, containing old stars, hot gas, and dark matter • The Sun orbits around the center with V ~ 220 km/s, ...
Setting the Stage for Habitable Planets
... Sun-like stars that have more frequent flares also have larger irradiance variations on multiple timescales [25], likely causing larger climate variations. Ionizing radiation and stellar winds can remove the atmosphere from an Earth-like planet in the CHZ of a low mass star, but the timescale for it ...
... Sun-like stars that have more frequent flares also have larger irradiance variations on multiple timescales [25], likely causing larger climate variations. Ionizing radiation and stellar winds can remove the atmosphere from an Earth-like planet in the CHZ of a low mass star, but the timescale for it ...
shirley - Yancy L. Shirley`s Webpage
... Dense cores may be forming cluster of stars = SED dominated by most massive star = SED classification confused! Very broad linewidths consistent with turbulent gas ...
... Dense cores may be forming cluster of stars = SED dominated by most massive star = SED classification confused! Very broad linewidths consistent with turbulent gas ...
Spectral Classification of Stars
... "If, on the contrary, two stars should really be situated very near each other, and at the same time so far insulated as not to be materially affected by the attractions of neighbouring stars, they will then compose a separate system, and remain united by the bond of their own mutual gravitation tow ...
... "If, on the contrary, two stars should really be situated very near each other, and at the same time so far insulated as not to be materially affected by the attractions of neighbouring stars, they will then compose a separate system, and remain united by the bond of their own mutual gravitation tow ...
Grade 8 Earth/Space Posttest Select the best answer to each
... C. Soil and rock wearing away below the surface caused sinkholes that left craters. D. Asteroids, meteorites, and comets speeding through the solar system collided with the Moon and created impact craters. ____ 28. Refracting telescopes use lenses. Reflecting telescopes use mirrors. However, both ty ...
... C. Soil and rock wearing away below the surface caused sinkholes that left craters. D. Asteroids, meteorites, and comets speeding through the solar system collided with the Moon and created impact craters. ____ 28. Refracting telescopes use lenses. Reflecting telescopes use mirrors. However, both ty ...
HR 6060: The Closest Ever Solar Twin
... same degree of activity. Our estimated projected rotation velocity for HR 6060 is vseni \leq 3,0 Km/s, from a selected set of Fe I lines with very clean profiles. The abundances in HR 6060 of log N(Li) < 1.4 (Soderblom 1983) and log N(Be) = 1.15 ± 0.15 (Boesgaard & King 1993) are solar: log N(Li)sun ...
... same degree of activity. Our estimated projected rotation velocity for HR 6060 is vseni \leq 3,0 Km/s, from a selected set of Fe I lines with very clean profiles. The abundances in HR 6060 of log N(Li) < 1.4 (Soderblom 1983) and log N(Be) = 1.15 ± 0.15 (Boesgaard & King 1993) are solar: log N(Li)sun ...
FOTO Imaging
... camera, you can create a much sharper image than is visible to the eye through the eyepiece. Steve will demonstrate how a few minutes of computer processing time can produce a very usable image from the original. Steve has been an amateur astronomer for more than 40 years. His interest in astronomy ...
... camera, you can create a much sharper image than is visible to the eye through the eyepiece. Steve will demonstrate how a few minutes of computer processing time can produce a very usable image from the original. Steve has been an amateur astronomer for more than 40 years. His interest in astronomy ...
1 Astrobiologically Interesting Stars within 10
... may have outlasted their usefulness as abodes of life, if the luminosity increase sustained from zero age to their present evolutionary status surpasses the capability of the planetary thermo-regulating carbonate-silicate cycle. This situation is dependent upon planetary location inside the CHZ, yet ...
... may have outlasted their usefulness as abodes of life, if the luminosity increase sustained from zero age to their present evolutionary status surpasses the capability of the planetary thermo-regulating carbonate-silicate cycle. This situation is dependent upon planetary location inside the CHZ, yet ...
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces. Its name is Latin for ""water-carrier"" or ""cup-carrier"", and its symbol is 20px (Unicode ♒), a representation of water.Aquarius is one of the oldest of the recognized constellations along the zodiac (the sun's apparent path). It was one of the 48 constellations listed by the 2nd century AD astronomer Ptolemy, and it remains one of the 88 modern constellations. It is found in a region often called the Sea due to its profusion of constellations with watery associations such as Cetus the whale, Pisces the fish, and Eridanus the river.