SPIE Astronomical Telescopes and Instrumentation Technical
... Salvignol, P. Strada, European Space Research and Technology Ctr. (Netherlands); M. Kolm, X. Gnata, K. Honnen, J. Köhler, R. Lemke, M. Maschmann, M. Melf, EADS Astrium GmbH (Germany); P. Ferruit, B. Dorner, Observatoire de Lyon (France) The Near Infrared Spectrograph (NIRSpec) is one of four science ...
... Salvignol, P. Strada, European Space Research and Technology Ctr. (Netherlands); M. Kolm, X. Gnata, K. Honnen, J. Köhler, R. Lemke, M. Maschmann, M. Melf, EADS Astrium GmbH (Germany); P. Ferruit, B. Dorner, Observatoire de Lyon (France) The Near Infrared Spectrograph (NIRSpec) is one of four science ...
Molecular Gas in the Large Magellanic Cloud
... We present a catalogue of giant molecular clouds (GMCs) in the LMC using the MAGMA CO data, and investigate whether the catalogued clouds are similar to GMCs in the Milky Way and other nearby galaxies. We find that GMCs in the LMC roughly follow the scaling relations between radius, velocity dispersi ...
... We present a catalogue of giant molecular clouds (GMCs) in the LMC using the MAGMA CO data, and investigate whether the catalogued clouds are similar to GMCs in the Milky Way and other nearby galaxies. We find that GMCs in the LMC roughly follow the scaling relations between radius, velocity dispersi ...
FY12 - National Optical Astronomy Observatory
... The background image is DECam mounted on the Blanco telescope. The composite color DECam image (smaller, right side) seen here is a three-filter composite (g, i, z) of the Orion Nebula. The larger DECam image, to illustrate the full field with two DECam dithers, is a two-filter composite (i, z). For ...
... The background image is DECam mounted on the Blanco telescope. The composite color DECam image (smaller, right side) seen here is a three-filter composite (g, i, z) of the Orion Nebula. The larger DECam image, to illustrate the full field with two DECam dithers, is a two-filter composite (i, z). For ...
STARLAB
... *O45"3-"# VTJOHUIF(SFFL.ZUIPMPHZ$ZMJOEFS SFWJFXUIFDPOTUFMMBUJPOT introduced in Grade One section but add the stories of Leo the Lion, Auriga the Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers a ...
... *O45"3-"# VTJOHUIF(SFFL.ZUIPMPHZ$ZMJOEFS SFWJFXUIFDPOTUFMMBUJPOT introduced in Grade One section but add the stories of Leo the Lion, Auriga the Charioteer, Lepus the Hare, Draco, and the Pleiades. Look at these constellations using the Constellation Cylinder. Hand out arrow pointers a ...
SOFA Astrometry Tools
... The “current” coordinates are the intermediary stage between a star’s catalog entry and the direction seen by the observer. The SOFA astrometry routines use the Celestial Intermediate Reference System (CIRS) for this purpose. The pole is the celestial intermediate pole (CIP), and the α zero-point th ...
... The “current” coordinates are the intermediary stage between a star’s catalog entry and the direction seen by the observer. The SOFA astrometry routines use the Celestial Intermediate Reference System (CIRS) for this purpose. The pole is the celestial intermediate pole (CIP), and the α zero-point th ...
PhD thesis
... Empezaré agradeciendo el apoyo a mis directores de tesis. Gràcies Robert, moltes gràcies per haver-me introduı̈t en el món de la radioastronomia, de la formació estel·lar, i molt més important, en el món de la investigació. Grácies per l’ajuda, el suport i la confiança durant aquests (una ...
... Empezaré agradeciendo el apoyo a mis directores de tesis. Gràcies Robert, moltes gràcies per haver-me introduı̈t en el món de la radioastronomia, de la formació estel·lar, i molt més important, en el món de la investigació. Grácies per l’ajuda, el suport i la confiança durant aquests (una ...
Document
... binaries and higher order multiples – 8 YSO binaries have significant deviations from coplanarity (though orientations differ by <30o) – 5 o 5 YSO triples or higher order multiples show disk alignment that deviates at a higher level from coplanarity - disks are misaligned to >120deg between some com ...
... binaries and higher order multiples – 8 YSO binaries have significant deviations from coplanarity (though orientations differ by <30o) – 5 o 5 YSO triples or higher order multiples show disk alignment that deviates at a higher level from coplanarity - disks are misaligned to >120deg between some com ...
IOTA Observer`s Manual
... discoverer of Uranus, William Herschel, as he noticed faint stars dim as the planet passed close by. Occultation observations are fun to observe. There is perhaps nothing more exciting than watching a star vanish and return from behind a lunar mountain, or to see the star disappear for several secon ...
... discoverer of Uranus, William Herschel, as he noticed faint stars dim as the planet passed close by. Occultation observations are fun to observe. There is perhaps nothing more exciting than watching a star vanish and return from behind a lunar mountain, or to see the star disappear for several secon ...
La Sapienza – 2015
... • So far no planets detected • Gaia space mission will measure stellar parallaxes with unprecedented precision • Gaia space mission will feature accuracy of ~30micro arc-sec • Gaia is predicted to discover 10,000 planets using astrometry in our local surrounding alone ...
... • So far no planets detected • Gaia space mission will measure stellar parallaxes with unprecedented precision • Gaia space mission will feature accuracy of ~30micro arc-sec • Gaia is predicted to discover 10,000 planets using astrometry in our local surrounding alone ...
environmental effects on galaxy evolution in nearby clusters
... The environmental effects on galaxy evolution in nearby clusters are investigated using a multiwavelength dataset. The present analysis is focused on the properties of three (Abell 1367, Virgo and Coma) among the best studied clusters in the local Universe. Due to the variety of their environmental ...
... The environmental effects on galaxy evolution in nearby clusters are investigated using a multiwavelength dataset. The present analysis is focused on the properties of three (Abell 1367, Virgo and Coma) among the best studied clusters in the local Universe. Due to the variety of their environmental ...
Characterization of the physical properties of the ROSETTA target
... at large heliocentric distance. The aim of this study is to provide a good characterization of the nucleus of the ROSETTA target comet and its dust environment far away from the Sun. This information is of high importance for a good planning of the rendezvous of the ROSETTA spacecraft with 67P/C-G. ...
... at large heliocentric distance. The aim of this study is to provide a good characterization of the nucleus of the ROSETTA target comet and its dust environment far away from the Sun. This information is of high importance for a good planning of the rendezvous of the ROSETTA spacecraft with 67P/C-G. ...
The Day We Found the Universe
... home was suddenly humbled, becoming just one of a multitude of galaxies residing in the vast gulfs of space. In one fell swoop, the visible universe was enlarged by an inconceivable factor, eventually trillions of times over. In more familiar terms, it's as if we had been con ned to one square yard ...
... home was suddenly humbled, becoming just one of a multitude of galaxies residing in the vast gulfs of space. In one fell swoop, the visible universe was enlarged by an inconceivable factor, eventually trillions of times over. In more familiar terms, it's as if we had been con ned to one square yard ...
The most metal-poor galaxies
... Dwarf irregulars have sub-solar abundances, ranging down to 1/40 Z⊙ . In addition there are many blue compact galaxies (BCGs) in the range 1/10 to 1/50 Z⊙ , with, as we shall show later, IZw18 at the extreme. A more workable definition could use the minimum enrichment one predicts for a single burst ...
... Dwarf irregulars have sub-solar abundances, ranging down to 1/40 Z⊙ . In addition there are many blue compact galaxies (BCGs) in the range 1/10 to 1/50 Z⊙ , with, as we shall show later, IZw18 at the extreme. A more workable definition could use the minimum enrichment one predicts for a single burst ...
the MPO Canopus manual - Bdw Publishing
... Credit to the individual orbit computers is implicit by the inclusion of the name of the orbit computer on each orbit record. Information on how to obtain updated copies of the data file must be provided. New versions of this file, updated on a daily basis, will be available at http://www.minorplane ...
... Credit to the individual orbit computers is implicit by the inclusion of the name of the orbit computer on each orbit record. Information on how to obtain updated copies of the data file must be provided. New versions of this file, updated on a daily basis, will be available at http://www.minorplane ...
Development of a Software Package for the Reduction and Analysis
... for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) was also reached for the uncertainties in the astrometric transformation. Different modul ...
... for the reduction and analysis of meteor videos. The uncertainty in determining the position of a meteor was computed to be 0.2−3.0 pixels, with a median value of 0.3 pixels. Sub-pixel accuracy (0.2−0.5 pixels) was also reached for the uncertainties in the astrometric transformation. Different modul ...
kdtalk_jun2005 - The HST Treasury Program on Eta Carinae
... · WFPC2 1994-2000: Proper motion studies of the Homunculus. Dominant ejection date was 1843, during the Great Eruption. · STIS 2000: Spectra seen from various latitudes via reflection by dust. Result: The stellar wind is essentially polar -- a fairly revolutionary result for wind theory in general. ...
... · WFPC2 1994-2000: Proper motion studies of the Homunculus. Dominant ejection date was 1843, during the Great Eruption. · STIS 2000: Spectra seen from various latitudes via reflection by dust. Result: The stellar wind is essentially polar -- a fairly revolutionary result for wind theory in general. ...
Report from the Subaru Telescope for External
... have been made on distant galaxies, the large-scale structure, galaxy cluster formation, AGNs, spatial distribution of dark matter, evidence of pair instability supernova in the early universe, dwarf galaxies in the local group, direct imaging of proto-planetary systems, exoplanetary atmospheres, a ...
... have been made on distant galaxies, the large-scale structure, galaxy cluster formation, AGNs, spatial distribution of dark matter, evidence of pair instability supernova in the early universe, dwarf galaxies in the local group, direct imaging of proto-planetary systems, exoplanetary atmospheres, a ...
Abstract The Star Formation History of Low Surface Brightness Galaxies
... poorly constrained. These objects tend to be rather blue, contradicting the initial impression that they may simply be faded remnants of higher surface brightness galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps ...
... poorly constrained. These objects tend to be rather blue, contradicting the initial impression that they may simply be faded remnants of higher surface brightness galaxies whose star formation has finished. Other scenarios span a broad range: a young mean age, less dust, a lower metallicity, perhaps ...
8. Adaptive Optics
... simulated and demonstrated the feasibility of the proposed concepts. The performance presented for the AO systems is based on advances from today's technology in areas where we feel confident that such advances will occur (e.g. the sizes of the deformable mirrors). Even better performance could be a ...
... simulated and demonstrated the feasibility of the proposed concepts. The performance presented for the AO systems is based on advances from today's technology in areas where we feel confident that such advances will occur (e.g. the sizes of the deformable mirrors). Even better performance could be a ...
Landsat program
... Be scan mirror. This engineering solution allowed the US to develop LANDSAT at least five years ahead of French SPOT which first used CCD arrays to stare without need for a scanner. The MSS FPA, or Focal Plane Array consisted of 24 square optical fibers extruded down to .0002"square fiber tips in a ...
... Be scan mirror. This engineering solution allowed the US to develop LANDSAT at least five years ahead of French SPOT which first used CCD arrays to stare without need for a scanner. The MSS FPA, or Focal Plane Array consisted of 24 square optical fibers extruded down to .0002"square fiber tips in a ...
365 days of SKYWATCHING
... Unlike a star chart, Moon feature instructions are based on lunar topography and not our Earthly cardinal directions. While these pages outline what features should be visible on any given night, the position of the terminator may be slightly different for viewers in various time zones. Let’s start ...
... Unlike a star chart, Moon feature instructions are based on lunar topography and not our Earthly cardinal directions. While these pages outline what features should be visible on any given night, the position of the terminator may be slightly different for viewers in various time zones. Let’s start ...
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.