Conference Abstract Booklet here.
... We aim to construct an exceptionally deep catalog of variable objects in selected Galactic and extragalactic fields visited multiple times by the Hubble Space Telescope with the same instrument/filter combination. While some of these fields were searched for specific types of variables before (most ...
... We aim to construct an exceptionally deep catalog of variable objects in selected Galactic and extragalactic fields visited multiple times by the Hubble Space Telescope with the same instrument/filter combination. While some of these fields were searched for specific types of variables before (most ...
A New Science Strategy for Space Astronomy and Astrophysics
... In 1991 the National Research Council issued a detailed strategy for astronomy and astrophysics for the next decade,1 prepared by a committee under the leadership of John Bahcall. Like previous decadal studies in this field, the report identified in priority order the most important scientific progr ...
... In 1991 the National Research Council issued a detailed strategy for astronomy and astrophysics for the next decade,1 prepared by a committee under the leadership of John Bahcall. Like previous decadal studies in this field, the report identified in priority order the most important scientific progr ...
on the pms star hbc 498 and its associated nebulous stars1
... calibrations. Two exposures of the comparison lamp, one with a 1-second integration time and the other with a 3-second integration time were taken after observing a program star. An exposure time of 1200 seconds was used for HBC 498, DL Ori/G2 and HBC 495, and of 2400 seconds for HBC 496. A total of ...
... calibrations. Two exposures of the comparison lamp, one with a 1-second integration time and the other with a 3-second integration time were taken after observing a program star. An exposure time of 1200 seconds was used for HBC 498, DL Ori/G2 and HBC 495, and of 2400 seconds for HBC 496. A total of ...
Five-Hundred Meter Aperture Spherical Radio
... parabolic mirror anywhere within the spherical cap. Also in Figure 4, the virtual focus surface partial sphere radius is RV 160 m. The FAST system parabolic mirror is the size of the entire Arecibo reflector, 305 m (Arecibo can only use 221 m of its 305 m dish at one time). Like Arecibo, the FAST ...
... parabolic mirror anywhere within the spherical cap. Also in Figure 4, the virtual focus surface partial sphere radius is RV 160 m. The FAST system parabolic mirror is the size of the entire Arecibo reflector, 305 m (Arecibo can only use 221 m of its 305 m dish at one time). Like Arecibo, the FAST ...
MPhil Thesis - Final - Suzanne Knight
... low mass planets as it ascends the red giant and asymptotic giant branch evolutionary tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would prove that it could survive the final stages of stellar evolution and place constraint ...
... low mass planets as it ascends the red giant and asymptotic giant branch evolutionary tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would prove that it could survive the final stages of stellar evolution and place constraint ...
solon irving bailey - National Academy of Sciences
... elevated station might be maintained. Thus the problem was solved by the construction of a mule-path to the summit. A vivid description of this project is given in Harvard Annals 39, the first volume of the Peruvian Meteorology. After Professor Bailey and his party had passed eight consecutive days ...
... elevated station might be maintained. Thus the problem was solved by the construction of a mule-path to the summit. A vivid description of this project is given in Harvard Annals 39, the first volume of the Peruvian Meteorology. After Professor Bailey and his party had passed eight consecutive days ...
CHaracterising ExOPlanets Satellite arXiv:1310.7800v1 [astro
... (HARPS) instrument or the space-borne Kepler satellite are finding planets and cataloguing them with instrument: the contamination of the detector – a the available data (? and ?). The amount and the charged couple device (CCD) – by stray light. Stray quality of data that can be retrieved are limite ...
... (HARPS) instrument or the space-borne Kepler satellite are finding planets and cataloguing them with instrument: the contamination of the detector – a the available data (? and ?). The amount and the charged couple device (CCD) – by stray light. Stray quality of data that can be retrieved are limite ...
W.M. Keck Observatory Annual Report 2009
... studying planets orbiting nearby stars is now one of the most exciting and dynamic areas of astronomy. “Exoplanet” research, a relatively new field of study, has developed beyond its initial emphasis on proving whether or not planets exist beyond our own Solar System. With over 400 of these worlds i ...
... studying planets orbiting nearby stars is now one of the most exciting and dynamic areas of astronomy. “Exoplanet” research, a relatively new field of study, has developed beyond its initial emphasis on proving whether or not planets exist beyond our own Solar System. With over 400 of these worlds i ...
Astrophotography
Astrophotography is a specialized type of photography for recording images of astronomical objects and large areas of the night sky. The first photograph of an astronomical object (the Moon) was taken in 1840, but it was not until the late 19th century that advances in technology allowed for detailed stellar photography. Besides being able to record the details of extended objects such as the Moon, Sun, and planets, astrophotography has the ability to image objects invisible to the human eye such as dim stars, nebulae, and galaxies. This is done by long time exposure since both film and digital cameras can accumulate and sum light photons over these long periods of time. Photography revolutionized the field of professional astronomical research, with long time exposures recording hundreds of thousands of new stars and nebulae that were invisible to the human eye, leading to specialized and ever larger optical telescopes that were essentially big cameras designed to collect light to be recorded on film. Direct astrophotography had an early role in sky surveys and star classification but over time it has given way to more sophisticated equipment and techniques designed for specific fields of scientific research, with film (and later astronomical CCD cameras) becoming just one of many forms of sensor.Astrophotography is a large sub-discipline in amateur astronomy where it is usually used to record aesthetically pleasing images, rather than for scientific research, with a whole range of equipment and techniques dedicated to the activity.