Physics 1114OL - Normandale Community College
... cause him or her to miss significant portions of a course. The “I” is an alternative to a “W” when the student has demonstrated a mastery of the material and only will miss a part of the course. An agreement between the instructor and the student is made as to the nature of the work to be made up an ...
... cause him or her to miss significant portions of a course. The “I” is an alternative to a “W” when the student has demonstrated a mastery of the material and only will miss a part of the course. An agreement between the instructor and the student is made as to the nature of the work to be made up an ...
Constraining tidal dissipation in F-type main
... e.g., OGLE-TR-9 or WASP-3 that are shorter than the expected ages of the systems, which implies that the synchronous final state has possibly already been reached. Other systems, e.g., HD15082/WASP-33, have a star so massive that a Qs too large to be measurable is expected, or show a remarkable mis ...
... e.g., OGLE-TR-9 or WASP-3 that are shorter than the expected ages of the systems, which implies that the synchronous final state has possibly already been reached. Other systems, e.g., HD15082/WASP-33, have a star so massive that a Qs too large to be measurable is expected, or show a remarkable mis ...
Observations of binary systems with pulsating components
... • Spectroscopic binaries: stars which exhibit periodic displacement of their spectral lines owing to Doppler effect caused by orbital motion. • Depending on components’ relative brightness, the observed spectrum will show the displacement of lines of one or both components (if a star is too faint, i ...
... • Spectroscopic binaries: stars which exhibit periodic displacement of their spectral lines owing to Doppler effect caused by orbital motion. • Depending on components’ relative brightness, the observed spectrum will show the displacement of lines of one or both components (if a star is too faint, i ...
Dawes Review. The tidal downsizing hypothesis of planet formation
... that of stars, by gravitational instability, with formation of a few Jupiter mass gas clump in a massive protoplanetary disc. In difference to stars, young planets do not accrete more gas in this picture. They may actually loose most of their primordial gas if tidal forces from the host stars are st ...
... that of stars, by gravitational instability, with formation of a few Jupiter mass gas clump in a massive protoplanetary disc. In difference to stars, young planets do not accrete more gas in this picture. They may actually loose most of their primordial gas if tidal forces from the host stars are st ...
course objectives - Metropolitan Community College
... COURSE DESCRIPTION: This course is an introductory course in astronomy that covers the tools of astronomy, the night sky, the solar system, stars and star systems, galaxies, and cosmology. This is a lecture-only course. The lab course that complements this course is SCIE 1310. ...
... COURSE DESCRIPTION: This course is an introductory course in astronomy that covers the tools of astronomy, the night sky, the solar system, stars and star systems, galaxies, and cosmology. This is a lecture-only course. The lab course that complements this course is SCIE 1310. ...
Origin and loss of nebula-captured hydrogen envelopes from `sub`
... dissipated. However, if a nebula has a low dust depletion factor or low accretion rates resulting in low protoplanetary luminosities, it is possible that even protoplanets with Earth-mass cores may keep their hydrogen envelopes during their whole lifetime. In contrast to lower mass protoplanets, mor ...
... dissipated. However, if a nebula has a low dust depletion factor or low accretion rates resulting in low protoplanetary luminosities, it is possible that even protoplanets with Earth-mass cores may keep their hydrogen envelopes during their whole lifetime. In contrast to lower mass protoplanets, mor ...
Eight billion asteroids in the Oort cloud
... To break this degeneracy, one approach is to try to associate Oort cloud objects with their birth region. A similar approach has already been suggested for Main belt asteroids (DeMeo & Carry 2014). Traditionally, small bodies have been divided between comets (icy bodies on highly eccentric orbits), ...
... To break this degeneracy, one approach is to try to associate Oort cloud objects with their birth region. A similar approach has already been suggested for Main belt asteroids (DeMeo & Carry 2014). Traditionally, small bodies have been divided between comets (icy bodies on highly eccentric orbits), ...
Abiotic formation of O $\ mathsf {_2} $ and O $\ mathsf {_3} $ in high
... would inhibit the loss of oxygen by reaction with reduced minerals, whereas the lack of outgassing would eliminate reaction with reduced volcanic gases (primarily H2 ) as an oxygen sink. The martian atmosphere contains 0.1% O2 and would likely have even more if the planet were slightly larger so tha ...
... would inhibit the loss of oxygen by reaction with reduced minerals, whereas the lack of outgassing would eliminate reaction with reduced volcanic gases (primarily H2 ) as an oxygen sink. The martian atmosphere contains 0.1% O2 and would likely have even more if the planet were slightly larger so tha ...
The scattered disk population as a source of Oort cloud comets
... where they can be discovered, so they should represent more objects. The numerical integration was performed with our numerical code EVORB that consists of a mixed-variable leapfrog integrator, inspired by the Wisdom and Holman (1991) symplectic map. Our code is not a fully symplectic integrator bec ...
... where they can be discovered, so they should represent more objects. The numerical integration was performed with our numerical code EVORB that consists of a mixed-variable leapfrog integrator, inspired by the Wisdom and Holman (1991) symplectic map. Our code is not a fully symplectic integrator bec ...
A Perspective from Extinct Radionuclides on a Young
... in one or several nearby stars and were mixed with solar system material shortly before formation of planetary bodies (Cameron & Truran 1977, Meyer & Clayton 2000, Takigawa et al. 2008, Wasserburg et al. 2006). A few, such as 10 Be (t1/2 = 1.39 Myr; Chmeleff et al. 2010), were produced by intense pa ...
... in one or several nearby stars and were mixed with solar system material shortly before formation of planetary bodies (Cameron & Truran 1977, Meyer & Clayton 2000, Takigawa et al. 2008, Wasserburg et al. 2006). A few, such as 10 Be (t1/2 = 1.39 Myr; Chmeleff et al. 2010), were produced by intense pa ...
Ultra Deep Survey for Irregular Satellites of Uranus: Limits to
... By virtue of its proximity, Jupiter has the best-studied irregular satellite system (Figure 2), with 55 irregular satellites currently known (Sheppard & Jewitt 2003). In this paper we ask the question “does the ice-giant Uranus have a population of irregular satellites similar to that of gas-giant J ...
... By virtue of its proximity, Jupiter has the best-studied irregular satellite system (Figure 2), with 55 irregular satellites currently known (Sheppard & Jewitt 2003). In this paper we ask the question “does the ice-giant Uranus have a population of irregular satellites similar to that of gas-giant J ...
The Dynamical Structure of the Kuiper Belt and Its Primordial Origin
... eccentricity of the classical belt is ~0.07. It should be noted, however, that the upper eccentricity boundary of this population is set by the long-term orbital stability of the Kuiper belt (see Plate 7), and thus this semimajor axis region could have contained at some time in the past objects with ...
... eccentricity of the classical belt is ~0.07. It should be noted, however, that the upper eccentricity boundary of this population is set by the long-term orbital stability of the Kuiper belt (see Plate 7), and thus this semimajor axis region could have contained at some time in the past objects with ...
Photometry`s bright future: Detecting Solar System analogues with
... 2.0 in detecting solar system analogues. We use real-world solar data and end-to-end simulations to explore the stellar and instrumental noise properties. By injecting and retrieving planets, rings and moons of our own solar system, we show that the discovery of Venus- and Earth-analogues transiting ...
... 2.0 in detecting solar system analogues. We use real-world solar data and end-to-end simulations to explore the stellar and instrumental noise properties. By injecting and retrieving planets, rings and moons of our own solar system, we show that the discovery of Venus- and Earth-analogues transiting ...
Eight billion asteroids in the Oort cloud
... To transform the odds of a single small body ever becoming a member of the Oort cloud to the fraction of the Oort cloud, we need to know the initial populations at all distances from the Sun. The scaling usually assumed is that the surface density of the protoSolar nebula followed ∝ r−1.5 , based o ...
... To transform the odds of a single small body ever becoming a member of the Oort cloud to the fraction of the Oort cloud, we need to know the initial populations at all distances from the Sun. The scaling usually assumed is that the surface density of the protoSolar nebula followed ∝ r−1.5 , based o ...
exemplars and commentary
... Barnard’s star. An ancient Red Dwarf. Barnard's Star is a very low-mass red dwarf star about six light-years away from Earth in the constellation of Ophiuchus. Barnard's Star is the fourth-closest known individual star to the Sun, after the three components of the Alpha Centauri system. Despite its ...
... Barnard’s star. An ancient Red Dwarf. Barnard's Star is a very low-mass red dwarf star about six light-years away from Earth in the constellation of Ophiuchus. Barnard's Star is the fourth-closest known individual star to the Sun, after the three components of the Alpha Centauri system. Despite its ...
The Habitability of Proxima Centauri b I: Evolutionary Scenarios
... and NLTE effects, which make it extraordinarily difficult to identify elemental abundances; hence its composition is far more difficult to measure than for G and K dwarfs like α Cen A and B (Johnson & Apps 2009). Recently, Hinkel & Kane (2013) completed a reanalysis of published compositional studie ...
... and NLTE effects, which make it extraordinarily difficult to identify elemental abundances; hence its composition is far more difficult to measure than for G and K dwarfs like α Cen A and B (Johnson & Apps 2009). Recently, Hinkel & Kane (2013) completed a reanalysis of published compositional studie ...
A Thick Cloud of Neptune Trojans and Their Colors
... the solar system after any marked planetary migration (4, 12). These simulations also demonstrate that Saturn and Uranus are not expected to have any substantial primordial Trojan populations. Recent numerical simulations of small bodies temporarily passing through the giant planet region, such as C ...
... the solar system after any marked planetary migration (4, 12). These simulations also demonstrate that Saturn and Uranus are not expected to have any substantial primordial Trojan populations. Recent numerical simulations of small bodies temporarily passing through the giant planet region, such as C ...
May 2017 Astronomy Calendar by Dave Mitsky
... Boötids are the slowest of all meteors, travelling at 18 kilometers (11 miles) per second. Browse http://www.popastro.com/meteor/activity/activity.php?id_pag=485 for additional information. Information on Iridium flares and passes of the ISS, the Tiangong-1, the USAF’s X-37B, the HST, and other sate ...
... Boötids are the slowest of all meteors, travelling at 18 kilometers (11 miles) per second. Browse http://www.popastro.com/meteor/activity/activity.php?id_pag=485 for additional information. Information on Iridium flares and passes of the ISS, the Tiangong-1, the USAF’s X-37B, the HST, and other sate ...
Circumstellar Disks: IRAS to ALMA (by way of HST) Dr. Karl Stapelfeldt
... Planet e wasfound in the gap between inner belt and planet d Suggestion that belt edges may be located at major resonances Planet orbits still being defined ...
... Planet e wasfound in the gap between inner belt and planet d Suggestion that belt edges may be located at major resonances Planet orbits still being defined ...
equato equator - Universal Workshop
... of the ecliptic. It keeps occulting a certain star at intervals of a sidereal month, a longer series of such occultations if the star is closer to the ecliptic; the series ends, and then takes place again 18.6 years ...
... of the ecliptic. It keeps occulting a certain star at intervals of a sidereal month, a longer series of such occultations if the star is closer to the ecliptic; the series ends, and then takes place again 18.6 years ...
Full Program with Abstracts - CIERA
... Various investigations of exoplanet occurrence indicate that shortperiod planets are common around M dwarf stars. However, not all M dwarfs are equal, with mid-to-late type M dwarfs being significantly smaller, fully convective, and showing different activity phenomena when compared to early-type M ...
... Various investigations of exoplanet occurrence indicate that shortperiod planets are common around M dwarf stars. However, not all M dwarfs are equal, with mid-to-late type M dwarfs being significantly smaller, fully convective, and showing different activity phenomena when compared to early-type M ...
Jupiter`s Outer Satellites and Trojans
... their descendants survive today in the Kuiper Belt . The Kuiper Belt in turn feeds the giant-planet crossing Centaurs , which are then converted by planetary (largely Jovian) perturbations into Jupiter Family Comets (JFCs; short-period comets which are strongly interacting with Jupiter, formally tho ...
... their descendants survive today in the Kuiper Belt . The Kuiper Belt in turn feeds the giant-planet crossing Centaurs , which are then converted by planetary (largely Jovian) perturbations into Jupiter Family Comets (JFCs; short-period comets which are strongly interacting with Jupiter, formally tho ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.