Optical interferometry in astronomy
... the seeing size, seeing (λ) ∝ λ/r0 (λ) ∝ λ−1/5 , is only weakly dependent on the wavelength (Fried 1965). An example of the phase delays associated with a snapshot of Kolmogorov turbulence can be seen in figure 4 for 12 m square, corresponding roughly to the size of the largest telescopes today (e.g ...
... the seeing size, seeing (λ) ∝ λ/r0 (λ) ∝ λ−1/5 , is only weakly dependent on the wavelength (Fried 1965). An example of the phase delays associated with a snapshot of Kolmogorov turbulence can be seen in figure 4 for 12 m square, corresponding roughly to the size of the largest telescopes today (e.g ...
Catch an Asteroid - Odysseus Contest
... were received and now are part of the database for the 4844 Matsuyama asteroid. This was very important for us – knowing that our work, our research was useful and will be used by the astronomers for survey of the asteroid movement. The second most important part of the project was to make photometr ...
... were received and now are part of the database for the 4844 Matsuyama asteroid. This was very important for us – knowing that our work, our research was useful and will be used by the astronomers for survey of the asteroid movement. The second most important part of the project was to make photometr ...
AstroMaster Series Telescopes
... Attaching the Equatorial Mount.................................................................................................. 7 Installing the Counterweight Bar & Counterweights.................................................................. 7 Attaching the Slow Motion Cables .................. ...
... Attaching the Equatorial Mount.................................................................................................. 7 Installing the Counterweight Bar & Counterweights.................................................................. 7 Attaching the Slow Motion Cables .................. ...
Stars, Galaxies, and Beyond
... Ivezić for allowing me this opportunity to explore these many important topics in astrophysics. Sources: The materials in this summary derive from the lecture notes, the assigned textbook, and many Web and published scientific articles and other sources as noted. I do not consider Wikipedia to be a ...
... Ivezić for allowing me this opportunity to explore these many important topics in astrophysics. Sources: The materials in this summary derive from the lecture notes, the assigned textbook, and many Web and published scientific articles and other sources as noted. I do not consider Wikipedia to be a ...
Maximizing the ExoEarth Candidate Yield from a Future Direct
... relatively small, and in the case of single-visit studies, as discussed below, the yield scales weakly with mission lifetime. Therefore, spectral characterization time should not greatly impact the single-visit yield estimates from this study. Finally, we observe each star only once and ignore revis ...
... relatively small, and in the case of single-visit studies, as discussed below, the yield scales weakly with mission lifetime. Therefore, spectral characterization time should not greatly impact the single-visit yield estimates from this study. Finally, we observe each star only once and ignore revis ...
the Local Group - Simon P Driver
... – e.g. for the LMC, the range found for (m – M) is 18.1 to 18.8 – from -5 log d formula, this makes a 40% difference in the distance! • for dSph, distances could be uncertain by factor of ~2 Galaxies – AS 3011 ...
... – e.g. for the LMC, the range found for (m – M) is 18.1 to 18.8 – from -5 log d formula, this makes a 40% difference in the distance! • for dSph, distances could be uncertain by factor of ~2 Galaxies – AS 3011 ...
CHaracterising ExOPlanets Satellite arXiv:1310.7800v1 [astro
... Space Agency. It will carry out follow-up measurements on transiting planets. This requires exquisite data that can be acquired only by a space-borne observatory and by well understood and mitigated sources of noise. Earth stray light is one of them which becomes the most prominent noise for faint s ...
... Space Agency. It will carry out follow-up measurements on transiting planets. This requires exquisite data that can be acquired only by a space-borne observatory and by well understood and mitigated sources of noise. Earth stray light is one of them which becomes the most prominent noise for faint s ...
RTICC Rapid Terrestrial Imaging CubeSat Constellation
... deployed on its orbital plane, or about 9 months total. Based on the lower total delta-V and potentially much lower deployment time, the precession method with multiple launches was the chosen carrier deployment method. Once the carriers are place on their respective orbits, the cubesats must be ev ...
... deployed on its orbital plane, or about 9 months total. Based on the lower total delta-V and potentially much lower deployment time, the precession method with multiple launches was the chosen carrier deployment method. Once the carriers are place on their respective orbits, the cubesats must be ev ...
AstroMaster Series Telescopes
... Attaching the Equatorial Mount ...............................................................................................................7 Installing the Counterweight Bar & Counterweights ...............................................................................7 Attaching the Slow Motion ...
... Attaching the Equatorial Mount ...............................................................................................................7 Installing the Counterweight Bar & Counterweights ...............................................................................7 Attaching the Slow Motion ...
ABSTRACT Exoplanet Habitability and an Analysis of Gliese 436 b
... down.10 Greenhouse gases also allow for stability if they are in equilibrium with volcanic activity on the exoplanet.12 This is an effect of the carbon-silicate cycle which regulates the amount of carbon dioxide present in the atmosphere.12 At higher temperatures, the amount of carbon dioxide decrea ...
... down.10 Greenhouse gases also allow for stability if they are in equilibrium with volcanic activity on the exoplanet.12 This is an effect of the carbon-silicate cycle which regulates the amount of carbon dioxide present in the atmosphere.12 At higher temperatures, the amount of carbon dioxide decrea ...
Chapter 19
... absorption spectrum. It can be used to identify some of the elements in a star’s atmosphere. ...
... absorption spectrum. It can be used to identify some of the elements in a star’s atmosphere. ...
T3-Cosmic Star Formation History
... formation of cosmic structure, and observations in this field have accumulated at an astonishing pace. Multiwavelength imaging surveys with the Hubble (HST) and Spitzer space telescopes and ground-based facilities, together with spectroscopic follow-up with 8-m-class telescopes, have led to the disco ...
... formation of cosmic structure, and observations in this field have accumulated at an astonishing pace. Multiwavelength imaging surveys with the Hubble (HST) and Spitzer space telescopes and ground-based facilities, together with spectroscopic follow-up with 8-m-class telescopes, have led to the disco ...
Astronomy Astrophysics
... 2. Cluster search and methods of analysis The VIRCAM (VISTA Infrared CAMera; Dalton et al. 2006) is a 16 detector-array infrared camera that samples 1.65 deg2 . Each 2048 × 2048 detector is sensitive over λ = 0.8–2.5 μm and delivers images with an average pixel scale of 0.34 arcsec px−1 . A single e ...
... 2. Cluster search and methods of analysis The VIRCAM (VISTA Infrared CAMera; Dalton et al. 2006) is a 16 detector-array infrared camera that samples 1.65 deg2 . Each 2048 × 2048 detector is sensitive over λ = 0.8–2.5 μm and delivers images with an average pixel scale of 0.34 arcsec px−1 . A single e ...
Galaxies - WordPress.com
... A galaxies occasionally collide with one another, particularly within cluster of galaxies B galaxies are so closely packed in the universe that they are always interacting with one another C galaxies are so widely separated that they never interact or collide D the universe is composed of one giant ...
... A galaxies occasionally collide with one another, particularly within cluster of galaxies B galaxies are so closely packed in the universe that they are always interacting with one another C galaxies are so widely separated that they never interact or collide D the universe is composed of one giant ...
PPT presentation
... M31; NGC 185, NGC 205 and NGC 221, via filter imaging in [OIII] and Halpha. Ford & Jenner (1975) followed up with deeper observations of NGC 221 (=M32), detecting 21 PNe in its field. 3 of the 14 PNe with observed radial velocities belonged to M31, the rest to NGC 221 (200 km/s difference between th ...
... M31; NGC 185, NGC 205 and NGC 221, via filter imaging in [OIII] and Halpha. Ford & Jenner (1975) followed up with deeper observations of NGC 221 (=M32), detecting 21 PNe in its field. 3 of the 14 PNe with observed radial velocities belonged to M31, the rest to NGC 221 (200 km/s difference between th ...
Astronomy and Astrophysics (ASTRO) Iowa State University – 2013-2014 1
... asteroids. Extensive use of the planetarium is included. Students who take Astro 120 may count credit in only one of Astro 102 or 103 toward graduation. ASTRO 125L. The Sky and the Solar System Laboratory. (0-2) Cr. 1. F.S. Prereq: Concurrent or previous enrollment in ASTRO 120 Laboratory course to ...
... asteroids. Extensive use of the planetarium is included. Students who take Astro 120 may count credit in only one of Astro 102 or 103 toward graduation. ASTRO 125L. The Sky and the Solar System Laboratory. (0-2) Cr. 1. F.S. Prereq: Concurrent or previous enrollment in ASTRO 120 Laboratory course to ...
Chapter J2
... • Apparent Magnitude The brightness of a light or star is called apparent magnitude. • Absolute Magnitude Absolute magnitude is the actual brightness of a star. ...
... • Apparent Magnitude The brightness of a light or star is called apparent magnitude. • Absolute Magnitude Absolute magnitude is the actual brightness of a star. ...
talk
... Baryonic fraction for NGC 3741 (within the extent of the gas disk) ~ 0.18 ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rot ...
... Baryonic fraction for NGC 3741 (within the extent of the gas disk) ~ 0.18 ► comparable to other galaxies with less extended HI disk No evidence for baryon loss (measured within the extent of gas disk) in faint dwarf galaxies (contradiction to simulations of galaxy formation !) To reconcile rot ...
497 Autostar Manual for DS-2090AT-TC and DS-2102AT-TC
... GLOSSARY What is an elliptical galaxy? How far away is the Sun? Expand your knowledge of astronomy by displaying terms and definitions, and other information. ...
... GLOSSARY What is an elliptical galaxy? How far away is the Sun? Expand your knowledge of astronomy by displaying terms and definitions, and other information. ...
About the Hubble Space Telescope
... galaxies, and early and distant galaxies beyond Hubble’s current reach. An attempt will also be made to repair the STIS. Installed in 1997, it stopped working in 2004. When repaired, the instrument will be used for high-resolution studies in visible and ultraviolet light of both nearby star systems ...
... galaxies, and early and distant galaxies beyond Hubble’s current reach. An attempt will also be made to repair the STIS. Installed in 1997, it stopped working in 2004. When repaired, the instrument will be used for high-resolution studies in visible and ultraviolet light of both nearby star systems ...
New brown dwarfs and giant planets
... Stellar kinematics are usually modelled as Gaussian distributions (s(U), s(V), s(W) ) But disk kinematics are more complex: use probability plots Composite in V 2 Gaussian components in (U, W) local number ratio high:low ~ 1:10 thick disk and old disk? ...
... Stellar kinematics are usually modelled as Gaussian distributions (s(U), s(V), s(W) ) But disk kinematics are more complex: use probability plots Composite in V 2 Gaussian components in (U, W) local number ratio high:low ~ 1:10 thick disk and old disk? ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.