W.M. Keck Observatory Annual Report 2009
... to astronomical research 365 days/nights per year. Observing time on the Keck telescopes is highly prized and is divided each year among its partner institutions: the California Institute of Technology, the University of California and NASA, as well as the University of Hawai’i. The broader astronom ...
... to astronomical research 365 days/nights per year. Observing time on the Keck telescopes is highly prized and is divided each year among its partner institutions: the California Institute of Technology, the University of California and NASA, as well as the University of Hawai’i. The broader astronom ...
Multiwavelength observations of XTE J1118+480`s outburst
... 30% of sources detected by INTEGRAL/IBIS were not known. 80% of Norma sources are X-ray pulsars, high spin periods Spectra typical of neutron stars No radio emission 85% of sources are highly absorbed (X-ray observations): column density NH>1023 cm-2 X-ray absorption >> IR => absorbing matter local ...
... 30% of sources detected by INTEGRAL/IBIS were not known. 80% of Norma sources are X-ray pulsars, high spin periods Spectra typical of neutron stars No radio emission 85% of sources are highly absorbed (X-ray observations): column density NH>1023 cm-2 X-ray absorption >> IR => absorbing matter local ...
My Constellation
... Õ M65 (NGC 3623) and M66 (NGC 3627) make a splendid pair of spiral galaxies in the same field. Both galaxies are elongated north-south; M65 has a tighter spiral and is perhaps the more noticeable. Õ NGC 3628, a galaxy seen edge-on. Actually, this is larger than either Messier object, but much dimmer ...
... Õ M65 (NGC 3623) and M66 (NGC 3627) make a splendid pair of spiral galaxies in the same field. Both galaxies are elongated north-south; M65 has a tighter spiral and is perhaps the more noticeable. Õ NGC 3628, a galaxy seen edge-on. Actually, this is larger than either Messier object, but much dimmer ...
PPT - University of Waterloo
... facility-class far-infrared/submm space observatory – 1/3 Guaranteed Time, 2/3 Open Time with annual calls for proposals ...
... facility-class far-infrared/submm space observatory – 1/3 Guaranteed Time, 2/3 Open Time with annual calls for proposals ...
What CAN You See With a Telescope?
... travel to reach the Earth. Furthermore, most asteroids have very irregular shapes. Their brightness also depends upon which part of their surface faces the sun and how much light is reflected from that particular surface. Scientists use the term albedo to describe how much light is reflected. ...
... travel to reach the Earth. Furthermore, most asteroids have very irregular shapes. Their brightness also depends upon which part of their surface faces the sun and how much light is reflected from that particular surface. Scientists use the term albedo to describe how much light is reflected. ...
LOCALIZATION AND OBSERVATIONS OF GRB010921 BY THE …
... 18 have light curve bumps photometric evidence for SNe 4 cases have spectroscopic evidence for a SN ...
... 18 have light curve bumps photometric evidence for SNe 4 cases have spectroscopic evidence for a SN ...
Planetary Nebulae: Observational Properties, Mimics, and Diagnostics
... Abstract: The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago. The new discoveries are a legacy of the recent availability of wide field, narrowband imaging surveys, primarily in the light of H-alpha. In ...
... Abstract: The total number of true, likely and possible planetary nebulae (PN) now known in the Milky Way is nearly 3000, double the number known a decade ago. The new discoveries are a legacy of the recent availability of wide field, narrowband imaging surveys, primarily in the light of H-alpha. In ...
The Day We Found the Universe
... from its side). Known since ancient times as the Milky Way because of its ghostly white visage, our galaxy a century ago was not just the sole inhabitant of the cosmos. It was the cosmos—a lone, star- lled oasis surrounded by a darkness of unknown depth. ...
... from its side). Known since ancient times as the Milky Way because of its ghostly white visage, our galaxy a century ago was not just the sole inhabitant of the cosmos. It was the cosmos—a lone, star- lled oasis surrounded by a darkness of unknown depth. ...
Save the Sky: Adventures in Sky Monitoring
... Most complete light curves for hundreds of bright variable stars starting from May 2000, when the first CONCAM was deployed on Kitt Peak. First devices to give real-time optical ground truth for the whole sky in support of major astronomical telescopes, including Gemini North, Keck, Subaru, IRTF, Sp ...
... Most complete light curves for hundreds of bright variable stars starting from May 2000, when the first CONCAM was deployed on Kitt Peak. First devices to give real-time optical ground truth for the whole sky in support of major astronomical telescopes, including Gemini North, Keck, Subaru, IRTF, Sp ...
Rich
... • The GALEX LAEs are a heterogeneous assortment of star forming galaxies. The distributions of IR-luminosities and optical luminosities span 2 orders of magnitude. The optical distribution is bimodal in part due to AGN contamination as 11/22 LAEs with 0.0Mr< -22.5 are AGN. • Dust extinction is likel ...
... • The GALEX LAEs are a heterogeneous assortment of star forming galaxies. The distributions of IR-luminosities and optical luminosities span 2 orders of magnitude. The optical distribution is bimodal in part due to AGN contamination as 11/22 LAEs with 0.0Mr< -22.5 are AGN. • Dust extinction is likel ...
the spectral irradiance of the moon
... USGS field center in Flagstaff, Arizona (lat. N32 120 52B9, long. W111 380 5B0, alt. 2148 m). Although the site is on the edge of the city, sky brightness has not been a problem because observations are of relatively bright objects (the Moon, and stars of magnitude lower than 6), and the use of im ...
... USGS field center in Flagstaff, Arizona (lat. N32 120 52B9, long. W111 380 5B0, alt. 2148 m). Although the site is on the edge of the city, sky brightness has not been a problem because observations are of relatively bright objects (the Moon, and stars of magnitude lower than 6), and the use of im ...
19_Testbank - Lick Observatory
... 1) Suppose you discovered a star made purely of hydrogen and helium. How old do you think it would be? Explain. Answer: A star made of only helium and hydrogen would have to be among the first generation of stars ever born, arising out of the primordial mix of elements that came from the Big Bang. T ...
... 1) Suppose you discovered a star made purely of hydrogen and helium. How old do you think it would be? Explain. Answer: A star made of only helium and hydrogen would have to be among the first generation of stars ever born, arising out of the primordial mix of elements that came from the Big Bang. T ...
Correcting Systematic Poalrization Effects in Keck LRISp
... (Tran et al. 1995; Tran 1995b,c,a). LRISp has been used to search these targets achieving roughly 1% polarimetric sensitivites (Tran et al. 2011). To achieve these high SNRs, not only are many photons required, but a thorough calibration and correction of many instrumental artifacts must be performe ...
... (Tran et al. 1995; Tran 1995b,c,a). LRISp has been used to search these targets achieving roughly 1% polarimetric sensitivites (Tran et al. 2011). To achieve these high SNRs, not only are many photons required, but a thorough calibration and correction of many instrumental artifacts must be performe ...
X-ray sources in the starburst spiral galaxy M 83
... region, which was not resolved in ROSAT HRI and PSPC images. It has also resolved two off-centre close pairs: the ROSAT HRI sources H12 and H27. The ROSAT HRI sources H11, H18 and H28 were undetected at a 2.5-σ level. If we assume an absorbing column density nH = 4 × 1020 cm−2 (the Galactic foregrou ...
... region, which was not resolved in ROSAT HRI and PSPC images. It has also resolved two off-centre close pairs: the ROSAT HRI sources H12 and H27. The ROSAT HRI sources H11, H18 and H28 were undetected at a 2.5-σ level. If we assume an absorbing column density nH = 4 × 1020 cm−2 (the Galactic foregrou ...
5 Report of the Panel on Stars and Stellar Evolution
... the rotation of stars with their magnetic fields and areas of nearly total ignorance about phenomena that have been imagined, but not yet been observed, such as accretion-induced collapse. Because astronomers understand stars well, they have the confidence to use them as cosmic probes to trace the h ...
... the rotation of stars with their magnetic fields and areas of nearly total ignorance about phenomena that have been imagined, but not yet been observed, such as accretion-induced collapse. Because astronomers understand stars well, they have the confidence to use them as cosmic probes to trace the h ...
orion® StarBlast 6 astro telescope
... lights will greatly impair your dark-adapted night vision. Avoid viewing over rooftops and chimneys, as they often have warm air currents rising from them. Similarly, avoid observing from indoors through an open (or closed) window, because the temperature difference between the indoor and outdoor ai ...
... lights will greatly impair your dark-adapted night vision. Avoid viewing over rooftops and chimneys, as they often have warm air currents rising from them. Similarly, avoid observing from indoors through an open (or closed) window, because the temperature difference between the indoor and outdoor ai ...
Llama_2015_AJ_Transiting - St Andrews Research Repository
... Transits of hot Jupiters in X-rays and the ultraviolet have been shown to be both deeper and more variable than the corresponding optical transits. This variability has been attributed to hot Jupiters having extended atmospheres at these wavelengths. Using resolved images of the Sun from NASA’s Sola ...
... Transits of hot Jupiters in X-rays and the ultraviolet have been shown to be both deeper and more variable than the corresponding optical transits. This variability has been attributed to hot Jupiters having extended atmospheres at these wavelengths. Using resolved images of the Sun from NASA’s Sola ...
status report on polarimetric high contrast results
... Therefore SPHERE-ZIMPOL will be capable to investigate only the very nearest stars for the polarization signal from extra-solar planets. There are half a dozen of good candidate systems for which giant planets should be detectable, even if their properties are not ideal (low albedo, not highly polar ...
... Therefore SPHERE-ZIMPOL will be capable to investigate only the very nearest stars for the polarization signal from extra-solar planets. There are half a dozen of good candidate systems for which giant planets should be detectable, even if their properties are not ideal (low albedo, not highly polar ...
CameraFilters
... 2. The log, base 10, of 2 is approximately 0.3, which is the nominal density value. The benefit of using density values is that they can be added when combined. Thus two ND .3 filters have a density value of 0.6. However, their combined transmittance would be found by multiplying 0.5 x 0.5 = 0.25, o ...
... 2. The log, base 10, of 2 is approximately 0.3, which is the nominal density value. The benefit of using density values is that they can be added when combined. Thus two ND .3 filters have a density value of 0.6. However, their combined transmittance would be found by multiplying 0.5 x 0.5 = 0.25, o ...
Hubble Deep Field
The Hubble Deep Field (HDF) is an image of a small region in the constellation Ursa Major, constructed from a series of observations by the Hubble Space Telescope. It covers an area 2.5 arcminutes across, about one 24-millionth of the whole sky, which is equivalent in angular size to a 65 mm tennis ball at a distance of 100 metres. The image was assembled from 342 separate exposures taken with the Space Telescope's Wide Field and Planetary Camera 2 over ten consecutive days between December 18 and December 28, 1995.The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known. By revealing such large numbers of very young galaxies, the HDF has become a landmark image in the study of the early universe, with the associated scientific paper having received over 900 citations by the end of 2014.Three years after the HDF observations were taken, a region in the south celestial hemisphere was imaged in a similar way and named the Hubble Deep Field South. The similarities between the two regions strengthened the belief that the universe is uniform over large scales and that the Earth occupies a typical region in the Universe (the cosmological principle). A wider but shallower survey was also made as part of the Great Observatories Origins Deep Survey. In 2004 a deeper image, known as the Hubble Ultra-Deep Field (HUDF), was constructed from a few months of light exposure. The HUDF image was at the time the most sensitive astronomical image ever made at visible wavelengths, and it remained so until the Hubble Extreme Deep Field (XDF) was released in 2012.