Differential measurement of atmospheric
... the performance of the two cases above is more prominent. One of the important issues of ground-based astrometry is how to establish more reasonable atmospheric refraction models and how to improve the correction accuracy of atmospheric refraction. With the continuous release of high-precision star ...
... the performance of the two cases above is more prominent. One of the important issues of ground-based astrometry is how to establish more reasonable atmospheric refraction models and how to improve the correction accuracy of atmospheric refraction. With the continuous release of high-precision star ...
SpeX Observing Manual - NASA Infrared Telescope Facility
... AR coats (see Figure 2-1). (The AR coats were applied in 1999 when the potential problem was not recognized.) These features were also present at the same frequency in the original Aladdin 3 data but the smaller pixels and better sampling of the new H2RG makes the features appear star-like rather th ...
... AR coats (see Figure 2-1). (The AR coats were applied in 1999 when the potential problem was not recognized.) These features were also present at the same frequency in the original Aladdin 3 data but the smaller pixels and better sampling of the new H2RG makes the features appear star-like rather th ...
The Search for Directed Intelligence
... In all of these cases the fact that the laser linewidth (bandwidth) is extremely narrow (from kHz to GHz depending on the laser design) and the field of view is extremely narrow, mitigates these effects which would otherwise be overwhelming for a broadband photometric band survey. Heterodyning is al ...
... In all of these cases the fact that the laser linewidth (bandwidth) is extremely narrow (from kHz to GHz depending on the laser design) and the field of view is extremely narrow, mitigates these effects which would otherwise be overwhelming for a broadband photometric band survey. Heterodyning is al ...
Unit 1 test review and answer key 16
... 47. A natural object observed in space such as a planet or a star is called a ____________________. 48. After Aristotle observed that the star patterns in the night sky did not change, he concluded that Earth was ____________________. 49. Celestial bodies include the Sun, Moon, stars, asteroids, com ...
... 47. A natural object observed in space such as a planet or a star is called a ____________________. 48. After Aristotle observed that the star patterns in the night sky did not change, he concluded that Earth was ____________________. 49. Celestial bodies include the Sun, Moon, stars, asteroids, com ...
Venus project - La Favre home page
... Venus in the telescope with one eye, look at the ruler with the other. If you concentrate, you should be able to see Venus on top of the ruler. Then you can measure the diameter of Venus. I have included a page at the end of this paper that can be used as the ruler. It is a set of heavy bars of blac ...
... Venus in the telescope with one eye, look at the ruler with the other. If you concentrate, you should be able to see Venus on top of the ruler. Then you can measure the diameter of Venus. I have included a page at the end of this paper that can be used as the ruler. It is a set of heavy bars of blac ...
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 ...
Chapter 1 The Discovery of Open Clusters - Willmann-Bell
... was obtained by Dr. William Watson, who sent it to his friend William Herschel (1738–1822). Herschel is one of the most remarkable figures in the history of astronomy. Born in Hanover Germany, he moved to England in November 1757; eventually settling in Bath, where he was joined by his sister Caroli ...
... was obtained by Dr. William Watson, who sent it to his friend William Herschel (1738–1822). Herschel is one of the most remarkable figures in the history of astronomy. Born in Hanover Germany, he moved to England in November 1757; eventually settling in Bath, where he was joined by his sister Caroli ...
Modeling the Spectral Energy Distributions and Variability
... Very faint (~ 18 – 20 mag.); decaying within a few days. ...
... Very faint (~ 18 – 20 mag.); decaying within a few days. ...
IRAM Annual Report 2012
... degraded, and IRAM is forced to adapt with very tight budget constraints. It is remarkable that IRAM can pursue in such difficult times ambitious projects like NOEMA, a further proof of the outstanding support from the partner organizations CNRS, MPG and IGN. Although numerous investments on new ins ...
... degraded, and IRAM is forced to adapt with very tight budget constraints. It is remarkable that IRAM can pursue in such difficult times ambitious projects like NOEMA, a further proof of the outstanding support from the partner organizations CNRS, MPG and IGN. Although numerous investments on new ins ...
george ellery hale - National Academy of Sciences
... ture of the past. His fondness for poetry began with the Iliad and Odyssey and developed more and more strongly throughout the years; and to his wide reading during his early life must be ascribed the development of his creative imagination, a characteristic which aided and enriched so greatly his l ...
... ture of the past. His fondness for poetry began with the Iliad and Odyssey and developed more and more strongly throughout the years; and to his wide reading during his early life must be ascribed the development of his creative imagination, a characteristic which aided and enriched so greatly his l ...
Radio Emission Toward Regions of Massive Star Formation
... stars with accretion disks and bipolar outflows have been directly observed (Kraus et al. 2010). Therefore, there must be some other important physics simple models do not take into account. The review by Zinnecker & Yorke (2007) discusses three prevailing theories: monolithic collapse in cores with ...
... stars with accretion disks and bipolar outflows have been directly observed (Kraus et al. 2010). Therefore, there must be some other important physics simple models do not take into account. The review by Zinnecker & Yorke (2007) discusses three prevailing theories: monolithic collapse in cores with ...
Astronomers` Observing Guides
... This is actually two books in one. The first part surveys the current state of knowledge about double stars – how they are born, evolve and interact, their significance in the cosmic scheme of things, and the valuable insights they provide into such fundamental matters as stellar masses and the ultima ...
... This is actually two books in one. The first part surveys the current state of knowledge about double stars – how they are born, evolve and interact, their significance in the cosmic scheme of things, and the valuable insights they provide into such fundamental matters as stellar masses and the ultima ...
SUB-KILOPARSEC IMAGING OF COOL MOLECULAR GAS IN
... particular, Weiß et al. (2013) used the Atacama Large Millimeter/submillimeter Array (ALMA) to conduct a redshift survey of 26 DSFGs discovered by the SPT, finding a median redshift hzi = 3.5. Additionally, Aravena et al. (2013) and Aravena et al., in prep. surveyed 18 of these galaxies in low-J CO ...
... particular, Weiß et al. (2013) used the Atacama Large Millimeter/submillimeter Array (ALMA) to conduct a redshift survey of 26 DSFGs discovered by the SPT, finding a median redshift hzi = 3.5. Additionally, Aravena et al. (2013) and Aravena et al., in prep. surveyed 18 of these galaxies in low-J CO ...
Project_Description2
... e) explore the use of fluorides (notably MgF2, CaF2, YF3, AlF3) in both protected-Ag and sol-gel based coatings. (Thermal deposition alone does not produce robust fluorides, but IAD can. Fluorides may be the only choice for low-index materials in protected-Ag coatings in the 8-12m window, where bot ...
... e) explore the use of fluorides (notably MgF2, CaF2, YF3, AlF3) in both protected-Ag and sol-gel based coatings. (Thermal deposition alone does not produce robust fluorides, but IAD can. Fluorides may be the only choice for low-index materials in protected-Ag coatings in the 8-12m window, where bot ...
Star formation rates from young-star counts and the structure of the
... Evans et al. (2009) and Lada et al. (2010) present the total SFRs based on young stellar object (YSO) candidates, identified from their mid-IR excess using Spitzer and compare those to molecular cloud masses derived using extinction maps for ∼10 nearby molecular clouds. These studies show that there ...
... Evans et al. (2009) and Lada et al. (2010) present the total SFRs based on young stellar object (YSO) candidates, identified from their mid-IR excess using Spitzer and compare those to molecular cloud masses derived using extinction maps for ∼10 nearby molecular clouds. These studies show that there ...
Worlds Beyond: A Strategy for the Detection and Characterization of
... stars like our Sun with new capabilities whose technologies are under development today (Fig. 5). The first of these uses optical and near-infrared doppler spectroscopic (radial velocity) and transit surveys from the ground, possibly supplemented by a space-based transit survey if needed, to find M- ...
... stars like our Sun with new capabilities whose technologies are under development today (Fig. 5). The first of these uses optical and near-infrared doppler spectroscopic (radial velocity) and transit surveys from the ground, possibly supplemented by a space-based transit survey if needed, to find M- ...
asteroid wise - Lawrence Hall of Science
... Asteroids that are made of rock and/or metal are not the only menace. Comets are bodies of ice that can go crashing into planets as dramatically seen in 1994 when the large comet ShoemakerLevy 9 fragmented and created huge explosions when it struck the planet Jupiter at more than 20 different sites. ...
... Asteroids that are made of rock and/or metal are not the only menace. Comets are bodies of ice that can go crashing into planets as dramatically seen in 1994 when the large comet ShoemakerLevy 9 fragmented and created huge explosions when it struck the planet Jupiter at more than 20 different sites. ...
The 2008 RBSE Journal - National Optical Astronomy Observatory
... ultra-luminous clusters. They are about 10-20 light-years across and can have luminosities up to 100 million times that of the Sun. These clusters are the densest starforming environments known. The thing that sets starburst galaxies apart from the rest is their high, intense emission lines in the f ...
... ultra-luminous clusters. They are about 10-20 light-years across and can have luminosities up to 100 million times that of the Sun. These clusters are the densest starforming environments known. The thing that sets starburst galaxies apart from the rest is their high, intense emission lines in the f ...
Conference Abstract Booklet here.
... remains a mystery. This phenomenon has not been extensively studied in firstovertone (RRc) RR Lyrae stars yet. The Optical Gravitational Lensing Experiment (OGLE) is a source of excellent quality photometry for more than 10 000 RRc stars in the Galactic bulge. These stars were monitored regularly fr ...
... remains a mystery. This phenomenon has not been extensively studied in firstovertone (RRc) RR Lyrae stars yet. The Optical Gravitational Lensing Experiment (OGLE) is a source of excellent quality photometry for more than 10 000 RRc stars in the Galactic bulge. These stars were monitored regularly fr ...
Seeing the infinitely small - Musées de la Ville de Genève
... has it that the telescope has its origins in Holland where children had apparently discovered that they could see into the distance while looking through two lenses placed one in front of the other. At the beginning of the 17th century Lippershey, a Dutch craftsman, sold an instrument “for seeing th ...
... has it that the telescope has its origins in Holland where children had apparently discovered that they could see into the distance while looking through two lenses placed one in front of the other. At the beginning of the 17th century Lippershey, a Dutch craftsman, sold an instrument “for seeing th ...
Live from McDonald Observatory: Observing Venus: explore how it
... an important discovery because as the videoconference facilitator will demonstrate, for us to see an entire cycle of phases, Venus must orbit the Sun. Your students have begun to make the same gr ...
... an important discovery because as the videoconference facilitator will demonstrate, for us to see an entire cycle of phases, Venus must orbit the Sun. Your students have begun to make the same gr ...
Name: Period: ______ Brahe and Kepler Tycho Brahe Tycho Brahe
... in Europe. He occupied this post until, in 1612, Emperor Rudolph II was deposed. In Prague Kepler published a number of important books. In 1604 Astronomia pars Optica ("The Optical Part of Astronomy") appeared, in which he treated atmospheric refraction but also treated lenses and gave the modern e ...
... in Europe. He occupied this post until, in 1612, Emperor Rudolph II was deposed. In Prague Kepler published a number of important books. In 1604 Astronomia pars Optica ("The Optical Part of Astronomy") appeared, in which he treated atmospheric refraction but also treated lenses and gave the modern e ...
Star formation in a galactic outflow
... shock excitation or with AGN photoionization. The outflow line ratios are consistent with those observed in star-forming galaxies. As illustrated in Fig.1b, the spectrum of IRAS23128-5919 does not show evidence for coronal lines, which are generally associated with powerful AGNs. This further suppor ...
... shock excitation or with AGN photoionization. The outflow line ratios are consistent with those observed in star-forming galaxies. As illustrated in Fig.1b, the spectrum of IRAS23128-5919 does not show evidence for coronal lines, which are generally associated with powerful AGNs. This further suppor ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.