Updated
... Celestron Sky Maps (for the Northern Hemisphere)* Celestron Sky Maps (for the Northern Hemisphere) Astronomy Today Astronomy Today vol. 1 The Solar System* Introduction to the Study of Stellar Structure^ The Comet Book: A Guide for the Return of Halley's Comet National Audubon Society Field Guide to ...
... Celestron Sky Maps (for the Northern Hemisphere)* Celestron Sky Maps (for the Northern Hemisphere) Astronomy Today Astronomy Today vol. 1 The Solar System* Introduction to the Study of Stellar Structure^ The Comet Book: A Guide for the Return of Halley's Comet National Audubon Society Field Guide to ...
The effect of stellar limb darkening values on the accuracy of the
... where we abbreviated δ = 1−µ, and ∆x means the uncertainty of quantity x. The variation in the relative error in the radius ratio of the star and the planet from Eq. (1) is shown in Figure 2. First we consider the temperature region 5000K < T < 7500 K. Here the different limb darkening theories agre ...
... where we abbreviated δ = 1−µ, and ∆x means the uncertainty of quantity x. The variation in the relative error in the radius ratio of the star and the planet from Eq. (1) is shown in Figure 2. First we consider the temperature region 5000K < T < 7500 K. Here the different limb darkening theories agre ...
Full Text
... N.1 Inleiding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.1 Sterpopulaties . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.2 AGB sterren . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.2.1 Pre-AGB evolutie . . . . . . . . . . . . . . . . . . . N.1.2.2 ...
... N.1 Inleiding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.1 Sterpopulaties . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.2 AGB sterren . . . . . . . . . . . . . . . . . . . . . . . . . . . N.1.2.1 Pre-AGB evolutie . . . . . . . . . . . . . . . . . . . N.1.2.2 ...
HUBBLE SPACE TELESCOPE AND GROUND-BASED
... expansion of the universe is currently accelerating, probably ...
... expansion of the universe is currently accelerating, probably ...
Constraints on the physical properties and chemical evolution of star
... The emission from interstellar gas heated by young stars in galaxies contains valuable clues about both the nature of these stars and the physical conditions in the interstellar medium. In particular, prominent emission lines produced by H ii regions, diffuse ionized gas and a potential active galac ...
... The emission from interstellar gas heated by young stars in galaxies contains valuable clues about both the nature of these stars and the physical conditions in the interstellar medium. In particular, prominent emission lines produced by H ii regions, diffuse ionized gas and a potential active galac ...
On the nature of Type IIn/Ia–CSM supernovae
... Downloaded from http://mnras.oxfordjournals.org/ at California Institute of Technology on April 2, 2015 ...
... Downloaded from http://mnras.oxfordjournals.org/ at California Institute of Technology on April 2, 2015 ...
Advanced LIGO: Context and Overview
... direction and vice versa, with the frequency of the gravitational wave. A Michelson interferometer operating between freely suspended masses is ideally suited to detect these antisymmetric distortions of space induced by the gravitational waves; the strains are converted into changes in light intens ...
... direction and vice versa, with the frequency of the gravitational wave. A Michelson interferometer operating between freely suspended masses is ideally suited to detect these antisymmetric distortions of space induced by the gravitational waves; the strains are converted into changes in light intens ...
Infrared identification of high-mass X
... Aims. We present here new infrared observations from which to reveal or constrain the nature of 15 INTEGRAL sources, which allow us to update and discuss the Galactic HMXB population statistics. Methods. After previous photometric and spectroscopic observing campaigns in the optical and near-infrare ...
... Aims. We present here new infrared observations from which to reveal or constrain the nature of 15 INTEGRAL sources, which allow us to update and discuss the Galactic HMXB population statistics. Methods. After previous photometric and spectroscopic observing campaigns in the optical and near-infrare ...
initial LIGO construction,
... star will be unstable to convective overturn, and that gravitational radiation produced in the first second or so of its life may be detectable anywhere throughout our Galaxy and its orbiting companions (i.e., the Magellanic Clouds). Nascent neutron stars: the narrowband tunability of Advanced LIGO ...
... star will be unstable to convective overturn, and that gravitational radiation produced in the first second or so of its life may be detectable anywhere throughout our Galaxy and its orbiting companions (i.e., the Magellanic Clouds). Nascent neutron stars: the narrowband tunability of Advanced LIGO ...
doctoral thesis (Dissertation)
... and UV spectroscopy and through detailed physical simulations. Spectroscopic X-ray data is reduced and presented for two targets: The CTTS V4046 Sgr was observed with Chandra for 100 ks, using a high-resolution grating spectrometer. The lightcurve contains one flare and the He-like triplets of Si xi ...
... and UV spectroscopy and through detailed physical simulations. Spectroscopic X-ray data is reduced and presented for two targets: The CTTS V4046 Sgr was observed with Chandra for 100 ks, using a high-resolution grating spectrometer. The lightcurve contains one flare and the He-like triplets of Si xi ...
Pluto: improved astrometry from 19 years of observations ⋆⋆⋆⋆⋆⋆
... observations. In particular, astrometric observations from the ground are affected by our atmosphere and the derived positions may present, for example, offsets caused by the difference in color of the light that comes from Pluto and from the background stars (chromatic refraction). Since it depends ...
... observations. In particular, astrometric observations from the ground are affected by our atmosphere and the derived positions may present, for example, offsets caused by the difference in color of the light that comes from Pluto and from the background stars (chromatic refraction). Since it depends ...
A Technical Comparison of the TMT and the E-ELT
... Adaptive optics will play a central role in all ELT projects. For diffraction limited imaging of point-like sources, the sensitivity grows with aperture as D4, so enormous gains can be realized by ELTs only with the use of AO. Equally important, ELTs can achieve resolution far greater than that of s ...
... Adaptive optics will play a central role in all ELT projects. For diffraction limited imaging of point-like sources, the sensitivity grows with aperture as D4, so enormous gains can be realized by ELTs only with the use of AO. Equally important, ELTs can achieve resolution far greater than that of s ...
BLANCO CARDENAS
... antigua casera Sharo. A aquellos que se fueron de Granada hace un tiempo, estoy feliz de que sean piezas de este rompecabezas con la Alhambra de fondo: gracias Juliane Serres, Ana Victoria Cuesta, Sebastian “Chingue” Meier, Lucı́a Piñeiro Freire, Lizette Duque, Ana Marı́a Salazar; sigo recordándol ...
... antigua casera Sharo. A aquellos que se fueron de Granada hace un tiempo, estoy feliz de que sean piezas de este rompecabezas con la Alhambra de fondo: gracias Juliane Serres, Ana Victoria Cuesta, Sebastian “Chingue” Meier, Lucı́a Piñeiro Freire, Lizette Duque, Ana Marı́a Salazar; sigo recordándol ...
Annual Report 2012
... of the Technical University of Delft, received his grant to develop DESHIMA, a revolutionary new sub-millimetre spectrograph. The heart of the instrument is based on developments in nanotechnology that allow ultra-sensitive detectors to be created. In addition, the ‘technologiestichting’ STW approve ...
... of the Technical University of Delft, received his grant to develop DESHIMA, a revolutionary new sub-millimetre spectrograph. The heart of the instrument is based on developments in nanotechnology that allow ultra-sensitive detectors to be created. In addition, the ‘technologiestichting’ STW approve ...
Liverpool Telescope 2: a new robotic facility for rapid transient follow
... science. The next decade will see upgrades to existing surveys as well as construction of the next generation of facilities. The most ambitious is the Large Synoptic Survey Telescope (LSST: Ivezic et al 2008), which is expected to see scientific first-light in 2021. LSST will image the entire Southe ...
... science. The next decade will see upgrades to existing surveys as well as construction of the next generation of facilities. The most ambitious is the Large Synoptic Survey Telescope (LSST: Ivezic et al 2008), which is expected to see scientific first-light in 2021. LSST will image the entire Southe ...
Slides - AO4ELT3
... Simulation of a protoplanetary system with a tidal gap created by a Jupiter-like planet at 7 AU from its central star as observed by ALMA TMT’s Planet Formation Instrument (PFI) will allow detection of the planets themselves that are responsible for the gaps and thus enable measurements of mass, acc ...
... Simulation of a protoplanetary system with a tidal gap created by a Jupiter-like planet at 7 AU from its central star as observed by ALMA TMT’s Planet Formation Instrument (PFI) will allow detection of the planets themselves that are responsible for the gaps and thus enable measurements of mass, acc ...
Presolar History Recorded in Extraterrestrial Materials
... comets. As direct samples of stars, these grains are sensitive their faint specks of light. The introduction of spectroscopy probes of the chemical evolution of the Galaxy, stellar evoluin the 1850s enabled the composition of stars to be tion and nucleosynthesis, and dust condensation processes. mea ...
... comets. As direct samples of stars, these grains are sensitive their faint specks of light. The introduction of spectroscopy probes of the chemical evolution of the Galaxy, stellar evoluin the 1850s enabled the composition of stars to be tion and nucleosynthesis, and dust condensation processes. mea ...
The X-shooter Spectral Library (XSL): I. DR1. Near
... Mouhcine (2002) (LW2000, LM2002); Mármol-Queraltó et al. (2008); and Rayner et al. (2009, IRTF-SpeX). However, spectral libraries with extended wavelength coverage at moderate resolution are still largely missing. With the high-efficiency, broad-wavelength coverage and high/moderate resolution of th ...
... Mouhcine (2002) (LW2000, LM2002); Mármol-Queraltó et al. (2008); and Rayner et al. (2009, IRTF-SpeX). However, spectral libraries with extended wavelength coverage at moderate resolution are still largely missing. With the high-efficiency, broad-wavelength coverage and high/moderate resolution of th ...
A SPECTROSCOPIC STUDY OF A LARGE SAMPLE OF WOLF-RAYET GALAXIES
... detected in 30 galaxies. Additionally, weaker WR emission lines are identified, most often the N III λ4512 and Si III λ4565 lines, which have very rarely or never been seen and discussed before in WR galaxies. These emission features are characteristic of WN7 – WN8 and WN9 – WN11 stars respectively. ...
... detected in 30 galaxies. Additionally, weaker WR emission lines are identified, most often the N III λ4512 and Si III λ4565 lines, which have very rarely or never been seen and discussed before in WR galaxies. These emission features are characteristic of WN7 – WN8 and WN9 – WN11 stars respectively. ...
ONE HUNDRED AND FIFTEEN YEARS OF METEOR
... blue-violet neutral and ionized calcium and neutral magnesium (Blajko 1907). There seems to have been no further effort to photograph meteor spectra until the early thirties, though a few were obtained by chance on programs of stellar spectrography (Millman 1932). In 1931 the writer conducted a brie ...
... blue-violet neutral and ionized calcium and neutral magnesium (Blajko 1907). There seems to have been no further effort to photograph meteor spectra until the early thirties, though a few were obtained by chance on programs of stellar spectrography (Millman 1932). In 1931 the writer conducted a brie ...
Manual for Visual Observing of Variable Stars
... the information needed in order to start a variable star observing program. Long-time and experienced observers, and those returning to variable star observing, on the other hand, may find it useful as a ready-reference, quick-resource, or refresher text to help explore new aspects of variable star ...
... the information needed in order to start a variable star observing program. Long-time and experienced observers, and those returning to variable star observing, on the other hand, may find it useful as a ready-reference, quick-resource, or refresher text to help explore new aspects of variable star ...
Classical Oe Stars in the Field of the Small Magellanic Cloud
... suggesting that Be stars may rotate closer to vcrit than observations find. Determining how Be stars form with subcritical rotation rates led to the viscous decretion disk model (VDD; Lee et al. 1991). This model proposes that processes such as non-radial pulsation (NRP) spin up the stellar atmosphe ...
... suggesting that Be stars may rotate closer to vcrit than observations find. Determining how Be stars form with subcritical rotation rates led to the viscous decretion disk model (VDD; Lee et al. 1991). This model proposes that processes such as non-radial pulsation (NRP) spin up the stellar atmosphe ...
γ Doradus pulsation in two pre-main sequence stars discovered by
... hours and a few days. It is therefore hard to unambiguously distinguish between the influence of rotation and pulsation in such stars (see, e.g., Uytterhoeven et al. 2010). Because of their periods, they are also not easy to observe from the ground. Only with dedicated multi-site campaigns it is pos ...
... hours and a few days. It is therefore hard to unambiguously distinguish between the influence of rotation and pulsation in such stars (see, e.g., Uytterhoeven et al. 2010). Because of their periods, they are also not easy to observe from the ground. Only with dedicated multi-site campaigns it is pos ...
THE CHEMICAL COMPOSITION AND AGE OF THE METAL
... We have combined new high-resolution spectra obtained with the Hubble Space Telescope (HST) and ground-based facilities to make a comprehensive new abundance analysis of the metal-poor, halo star BD +17 3248. We have detected the third r-process peak elements osmium, platinum, and (for the first tim ...
... We have combined new high-resolution spectra obtained with the Hubble Space Telescope (HST) and ground-based facilities to make a comprehensive new abundance analysis of the metal-poor, halo star BD +17 3248. We have detected the third r-process peak elements osmium, platinum, and (for the first tim ...
A SUB-SATURN MASS PLANET ORBITING HD 36511 Debra A
... HD 3651 was 8.5 m s1 . Since the upgrade, the mean (binned) velocity error has dropped to 3.4 m s1 . The Lick velocities are plotted in Figure 2a and show peak-to-peak variations of about 50 m s1 , with an rms of 11.4 m s1 . These velocity variations are well above the uncertainty of the individ ...
... HD 3651 was 8.5 m s1 . Since the upgrade, the mean (binned) velocity error has dropped to 3.4 m s1 . The Lick velocities are plotted in Figure 2a and show peak-to-peak variations of about 50 m s1 , with an rms of 11.4 m s1 . These velocity variations are well above the uncertainty of the individ ...
Indian Institute of Astrophysics
The Indian Institute of Astrophysics (IIA), with its headquarters in Bangalore (Karnataka state), India, is a premier national institute of India for the study of and research into topics pertaining to astronomy, astrophysics and related subjects.The Institute has a network of laboratories and observatories located in various places in India, including Kodaikanal (the Kodaikanal Solar Observatory), Kavalur (the Vainu Bappu Observatory), Gauribidanur, Hanle (the Indian Astronomical Observatory) and Hosakote.