HOPS 383: An Outbursting Class 0 Protostar in Orion
... There were two day-long series of WISE observations at 3.4 and 4.6 µm between the 2009 and 2010 YSOVAR campaigns, on 2010 March 8–9 and 2010 September 15–16. No significant variability from the WISE fluxes shown in the SED (Fig. 3) was detected. The second (2010) YSOVAR season showed a slight fading ...
... There were two day-long series of WISE observations at 3.4 and 4.6 µm between the 2009 and 2010 YSOVAR campaigns, on 2010 March 8–9 and 2010 September 15–16. No significant variability from the WISE fluxes shown in the SED (Fig. 3) was detected. The second (2010) YSOVAR season showed a slight fading ...
12-1 - Piscataway High School
... In 1989, the European Space Agency launched the satellite Hipparcos to measure stellar parallaxes from orbit above the blurring effects of Earth’s atmosphere. The satellite observed for four years, and the data were reduced by highly sophisticated software programs to produce two parallax catalogs i ...
... In 1989, the European Space Agency launched the satellite Hipparcos to measure stellar parallaxes from orbit above the blurring effects of Earth’s atmosphere. The satellite observed for four years, and the data were reduced by highly sophisticated software programs to produce two parallax catalogs i ...
Ages of young stars
... are combinations of theoretical uncertainties and observational uncertainties associated with estimating the luminosity of the LDB. Contributing to the latter are distance estimates, reddening and bolometric corrections (for stellar luminosity not in the band observed), but these are usually small c ...
... are combinations of theoretical uncertainties and observational uncertainties associated with estimating the luminosity of the LDB. Contributing to the latter are distance estimates, reddening and bolometric corrections (for stellar luminosity not in the band observed), but these are usually small c ...
Ages of Young Stars
... We know the timing of key events in the early history of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible prope ...
... We know the timing of key events in the early history of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible prope ...
Downloaded - Royal Society Open Science
... loss changes markedly when crossing this threshold. After the core helium is exhausted, a heliumburning shell is formed. At this point, the star is said to have begun evolving on the ‘asymptotic giant branch’ (AGB). Another expansion of convection may then cause a ‘second dredge-up’. When, during th ...
... loss changes markedly when crossing this threshold. After the core helium is exhausted, a heliumburning shell is formed. At this point, the star is said to have begun evolving on the ‘asymptotic giant branch’ (AGB). Another expansion of convection may then cause a ‘second dredge-up’. When, during th ...
![arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015](http://s1.studyres.com/store/data/017598977_1-7182fa8223b5ceaded332d6412cd3a07-300x300.png)
arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015
... Aims. We present an inversion method based on Bayesian analysis to constrain the interior structure of terrestrial exoplanets, in the form of chemical composition of the mantle and core size. Specifically, we identify what parts of the interior structure of terrestrial exoplanets can be determined f ...
... Aims. We present an inversion method based on Bayesian analysis to constrain the interior structure of terrestrial exoplanets, in the form of chemical composition of the mantle and core size. Specifically, we identify what parts of the interior structure of terrestrial exoplanets can be determined f ...
LCM Analysis for PLATO 2.0
... Summary: parameters of the system, parameters of the star spot The key to the understanding what happens on the surface of the close binary is hidden in the evolution of its light curve. The typical timescale of surface activity in short-period binaries last from several up to a few hundreds of orbi ...
... Summary: parameters of the system, parameters of the star spot The key to the understanding what happens on the surface of the close binary is hidden in the evolution of its light curve. The typical timescale of surface activity in short-period binaries last from several up to a few hundreds of orbi ...
Estudio de Cúmulos de Galaxias en el Sloan Digital Sky Survey
... Submillimetre galaxies (SMGs) • Star-forming galaxies at high z (z ~2-3) • SMGs discovered using SCUBA instrument on the JCMT telescope (850 µm). ...
... Submillimetre galaxies (SMGs) • Star-forming galaxies at high z (z ~2-3) • SMGs discovered using SCUBA instrument on the JCMT telescope (850 µm). ...
Name: Period: ______ Brahe and Kepler Tycho Brahe Tycho Brahe
... station), Tycho and his cast of assistants observed these bodies throughout their orbits. As a result, a number of orbital anomalies never before noticed were made explicit by Tycho. Without these complete series of observations of unprecedented accuracy, Kepler could not have discovered that planet ...
... station), Tycho and his cast of assistants observed these bodies throughout their orbits. As a result, a number of orbital anomalies never before noticed were made explicit by Tycho. Without these complete series of observations of unprecedented accuracy, Kepler could not have discovered that planet ...
1. INTRODUCTION - Institut für Theoretische Astrophysik
... emission in these lines and the observed basal Ñux emission, which had been suspected to be due to nonmagnetic (i.e., acoustic) heating operating in all late-type stars. The height dependence of the acoustic energy Ñux can be explained by the limiting strength property of the acoustic shocks and is ...
... emission in these lines and the observed basal Ñux emission, which had been suspected to be due to nonmagnetic (i.e., acoustic) heating operating in all late-type stars. The height dependence of the acoustic energy Ñux can be explained by the limiting strength property of the acoustic shocks and is ...
Prospects for asteroseismic inference on the envelope helium
... p modes and gravity (g) modes, and their frequencies may significantly deviate from the p-mode asymptotic pattern. It may be possible to infer the pure p-mode frequencies via a detailed modelling of the observed mixed-modes patterns (see e.g. ChristensenDalsgaard 2012). Whether the inferred acoustic ...
... p modes and gravity (g) modes, and their frequencies may significantly deviate from the p-mode asymptotic pattern. It may be possible to infer the pure p-mode frequencies via a detailed modelling of the observed mixed-modes patterns (see e.g. ChristensenDalsgaard 2012). Whether the inferred acoustic ...
Multiplicity in Early Stellar Evolution
... al., 2009) and the number of brown dwarfs formed (e.g., Bonnell et al., 2008; Bate, 2009a,b; Attwood et al., 2009). 3D HD SPH calculations by Bate (2009a) made predictions of the frequency of single, binary, triple and quadruple star systems formed during the collapse of a highly unstable cloud with ...
... al., 2009) and the number of brown dwarfs formed (e.g., Bonnell et al., 2008; Bate, 2009a,b; Attwood et al., 2009). 3D HD SPH calculations by Bate (2009a) made predictions of the frequency of single, binary, triple and quadruple star systems formed during the collapse of a highly unstable cloud with ...
Stellar Lifetimes
... by striking a balance between the gravity of their enormous mass and the pressure produced by the energy of fusion reactions. A main sequence star is in equilibrium as Hydrogen burning supports it against gravitational collapse. What happens as the hydrogen runs out? © 2007 Pearson Education Inc., p ...
... by striking a balance between the gravity of their enormous mass and the pressure produced by the energy of fusion reactions. A main sequence star is in equilibrium as Hydrogen burning supports it against gravitational collapse. What happens as the hydrogen runs out? © 2007 Pearson Education Inc., p ...
No. 6
... Figure 1. A 9x50 right angle finder with a slide adapter. The advantage of a right angle finder is that you don't have to crouch down to point to stars at high elevation angles. In addition the use of a larger aperture finder permits much easier acquisition of stars. There are cross hairs in this de ...
... Figure 1. A 9x50 right angle finder with a slide adapter. The advantage of a right angle finder is that you don't have to crouch down to point to stars at high elevation angles. In addition the use of a larger aperture finder permits much easier acquisition of stars. There are cross hairs in this de ...
Astrophysical explosions: from solar flares to cosmic gamma
... away and the viscous transport of mass is slow. In this state, the disc cannot transport matter through the disc and onto the white dwarf at the rate mass is added to the disc. The disc thus accumulates mass in its outer regions. Eventually, as the density increases, the disc becomes opaque (optical ...
... away and the viscous transport of mass is slow. In this state, the disc cannot transport matter through the disc and onto the white dwarf at the rate mass is added to the disc. The disc thus accumulates mass in its outer regions. Eventually, as the density increases, the disc becomes opaque (optical ...
Joint Scientific Opportunities with the Giant Magellan Telescope and
... Several of the GMT’s unique capabilities in the study of exoplanets and sub-stellar mass objects are outlined in the GMT science case. These include direct imaging in the near-IR with coronographs and adaptive objects, imaging and spectroscopy in the mid-IR using nulling interferometry, and detailed ...
... Several of the GMT’s unique capabilities in the study of exoplanets and sub-stellar mass objects are outlined in the GMT science case. These include direct imaging in the near-IR with coronographs and adaptive objects, imaging and spectroscopy in the mid-IR using nulling interferometry, and detailed ...
Life Beyond Earth Exhibition
... the vastness of the universe, places in the solar system where life could exist, the search for exoplanets, and questions that remain to be answered. The exhibit includes several iconic elements. A large interactive multitouch table enables visitors to try out five techniques astronomers use to hunt ...
... the vastness of the universe, places in the solar system where life could exist, the search for exoplanets, and questions that remain to be answered. The exhibit includes several iconic elements. A large interactive multitouch table enables visitors to try out five techniques astronomers use to hunt ...
Stellar populations
... ASTR112 The Galaxy Lecture 3 The cluster turn-off point • This is the (B-V) colour index of bluest mainsequence stars, and corresponds to most massive stars still on M-S (core hydrogen-burning stage). ...
... ASTR112 The Galaxy Lecture 3 The cluster turn-off point • This is the (B-V) colour index of bluest mainsequence stars, and corresponds to most massive stars still on M-S (core hydrogen-burning stage). ...
Open clusters and associations in the Gaia era
... members will stay together for about 100 Myr to a few Gyr for the densest ones, before it gets disrupted by the galactic tidal field. On the contrary, an association is unbound and disperses rapidly, over a timescale of 10 to 100 Myr. This means that it is much more difficult to detect associations ...
... members will stay together for about 100 Myr to a few Gyr for the densest ones, before it gets disrupted by the galactic tidal field. On the contrary, an association is unbound and disperses rapidly, over a timescale of 10 to 100 Myr. This means that it is much more difficult to detect associations ...
Dynamics of small bodies in planetary systems
... comets are confined to relatively narrow rings known as the asteroid belt and the Kuiper belt (see chapters by Nakamura and Jewitt). These belts are the source of the majority of the smaller objects seen in the solar system, since such objects are inevitably created in collisions between objects wit ...
... comets are confined to relatively narrow rings known as the asteroid belt and the Kuiper belt (see chapters by Nakamura and Jewitt). These belts are the source of the majority of the smaller objects seen in the solar system, since such objects are inevitably created in collisions between objects wit ...
The Milky Way as a galaxy
... brightest stars. Gaia will thus determine the distances for 2 108 stars with a precision of 10 %, and tangential velocities (see next section) with a precision of better than 3 km=s. ...
... brightest stars. Gaia will thus determine the distances for 2 108 stars with a precision of 10 %, and tangential velocities (see next section) with a precision of better than 3 km=s. ...
The fate of black hole singularities and the parameters of the
... beginning with an initial value p∗ and letting the system evolve through N generations. Let us define a function B(p) on P that is the expected number of future singularities generated during a lifetime of a universe with parameters5 p. We may observe that, for most p, B(p) is one, but there are sma ...
... beginning with an initial value p∗ and letting the system evolve through N generations. Let us define a function B(p) on P that is the expected number of future singularities generated during a lifetime of a universe with parameters5 p. We may observe that, for most p, B(p) is one, but there are sma ...