Stars: Stellar Evol & “death” Galaxies Astronomy 1 — Elementary Astronomy
... Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015 ...
... Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015 ...
The Kuiper Belt Explored by Serendipitous Stellar Occultations
... passes through the planet’s atmosphere. The starlight interacts with the atmosphere through refraction and extinction. ...
... passes through the planet’s atmosphere. The starlight interacts with the atmosphere through refraction and extinction. ...
Galactic Stellar and Substellar Initial Mass Function Invited Review Gilles Chabrier
... ABSTRACT. We review recent determinations of the present-day mass function (PDMF) and initial mass function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular clusters—and in conditions characteristic of early star formation. As a general feature, the IMF is found to depen ...
... ABSTRACT. We review recent determinations of the present-day mass function (PDMF) and initial mass function (IMF) in various components of the Galaxy—disk, spheroid, young, and globular clusters—and in conditions characteristic of early star formation. As a general feature, the IMF is found to depen ...
The isotopic mixture of barium in the metal-poor
... occur in the helium and carbon shells of massive stars in their hydrostatic burning phases. The r-process is likely associated with the deep interior of Type II supernovae. Since massive stars dying as Type II supernovae evolve faster than the stars that populate and evolve from the AGB, one anticip ...
... occur in the helium and carbon shells of massive stars in their hydrostatic burning phases. The r-process is likely associated with the deep interior of Type II supernovae. Since massive stars dying as Type II supernovae evolve faster than the stars that populate and evolve from the AGB, one anticip ...
Super-solar Metal Abundances in Two Galaxies at ζ ∼ 3.57
... enabled longer-wavelength follow-up by the Gamma-Ray burst Optical/Near-infrared Detector (GROND; Updike et al. 2009; McBreen et al. 2010), Palomar 60-inch Telescope (Cenko et al. 2009), and Gemini-S (Chornock et al. 2009). Optical spectroscopy of the afterglow started on 2009 March 24.25 UT (1.2 d ...
... enabled longer-wavelength follow-up by the Gamma-Ray burst Optical/Near-infrared Detector (GROND; Updike et al. 2009; McBreen et al. 2010), Palomar 60-inch Telescope (Cenko et al. 2009), and Gemini-S (Chornock et al. 2009). Optical spectroscopy of the afterglow started on 2009 March 24.25 UT (1.2 d ...
Published in Contemp. Phys. 51, 464-465 (2010).
... it will fade until, in ∼210,000 years time, it will relinquish its title as our brightest star. Sirius would have passed right across the Milky Way during the stone age. One of the Arabic names for Sirius is al-schira al-abur, or “Sirius which has passed across”, raising the fascinating speculation ...
... it will fade until, in ∼210,000 years time, it will relinquish its title as our brightest star. Sirius would have passed right across the Milky Way during the stone age. One of the Arabic names for Sirius is al-schira al-abur, or “Sirius which has passed across”, raising the fascinating speculation ...
Stars and Planets Credits and Acknowledgements
... NASA’s exploration of the cosmos is highlighted in multiple lessons along with cuttingedge science. New Horizons is introduced in the Scale Model Solar System lesson and the Kepler Mission, a distribution partner for Stars and Planets, is highlighted in Planet Hunting. Three of the lessons feature s ...
... NASA’s exploration of the cosmos is highlighted in multiple lessons along with cuttingedge science. New Horizons is introduced in the Scale Model Solar System lesson and the Kepler Mission, a distribution partner for Stars and Planets, is highlighted in Planet Hunting. Three of the lessons feature s ...
Avtar Krishen Kaul
... South). it is known as Uttarayana --- Winter Solstice, when the day is the shortest--December 22 this year. When we say the Equinoxes are precessing, it is actually as if the whole Equator is precessing and therefore, even the Winter and Summer Solstices also are precessing. Our Vedic Rishis had mad ...
... South). it is known as Uttarayana --- Winter Solstice, when the day is the shortest--December 22 this year. When we say the Equinoxes are precessing, it is actually as if the whole Equator is precessing and therefore, even the Winter and Summer Solstices also are precessing. Our Vedic Rishis had mad ...
The low-mass dispersed population around the Lupus clouds
... populated by field dwarfs and a brighter one populated by background giants, leaving a gap between both populations that is statistically expected to be almost depopulated. The low-mass stars and brown dwarfs of young aggregates lying between ∼100 pc and ∼300 pc from the Sun and having ages below ∼1 ...
... populated by field dwarfs and a brighter one populated by background giants, leaving a gap between both populations that is statistically expected to be almost depopulated. The low-mass stars and brown dwarfs of young aggregates lying between ∼100 pc and ∼300 pc from the Sun and having ages below ∼1 ...
2 Justification and benefits in joining TMT
... terms of hardware) is also reaching the western standard. Chinese astronomers are engaged in diverse research areas with a potential pool of excellent students and invaluable resources of oversea Chinese astronomers both in observational and theoretical astrophysics. However, a world class, general- ...
... terms of hardware) is also reaching the western standard. Chinese astronomers are engaged in diverse research areas with a potential pool of excellent students and invaluable resources of oversea Chinese astronomers both in observational and theoretical astrophysics. However, a world class, general- ...
Chapter 19
... • The End Stars usually lose material slowly, but sometimes they can lose material in a big explosion. Much of a star’s material returns to space, where it sometimes forms new stars. Chapter menu ...
... • The End Stars usually lose material slowly, but sometimes they can lose material in a big explosion. Much of a star’s material returns to space, where it sometimes forms new stars. Chapter menu ...
Article PDF - IOPscience
... indicators, the white dwarf population sampled must be as close as possible to being statistically complete. The white dwarf population is composed mainly of lowluminosity stars that are rather difficult to study as we move further away from the Sun. Candidates are mainly discovered from either prop ...
... indicators, the white dwarf population sampled must be as close as possible to being statistically complete. The white dwarf population is composed mainly of lowluminosity stars that are rather difficult to study as we move further away from the Sun. Candidates are mainly discovered from either prop ...
from z=0 to z=1
... ratio (attenuation) for UV galaxies. For IR (24m) selected galaxies at z~0.6, no evidence is found for evolution of either the stellar mass or the IR/UV ratio for given LIR. 8. Both IR and UV evolve significantly from z=0 to z=1, and the ratio IR/UV increases by ~ 4. This is consistent with the ...
... ratio (attenuation) for UV galaxies. For IR (24m) selected galaxies at z~0.6, no evidence is found for evolution of either the stellar mass or the IR/UV ratio for given LIR. 8. Both IR and UV evolve significantly from z=0 to z=1, and the ratio IR/UV increases by ~ 4. This is consistent with the ...
Astronomy and Astrophysics (ASTRO) Iowa State University – 2013-2014 1
... Courses primarily for undergraduates: ASTRO 102. North Star Astronomy. Cr. 1. F.S. An entirely web-based course covering topics in observing the sky and navigation by the stars for students with little or no previous experience. The course combines material on common naked-eye phenomena, such as dai ...
... Courses primarily for undergraduates: ASTRO 102. North Star Astronomy. Cr. 1. F.S. An entirely web-based course covering topics in observing the sky and navigation by the stars for students with little or no previous experience. The course combines material on common naked-eye phenomena, such as dai ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.