Targeted and All-Sky Search for Nanosecond Optical Pulses at
... Our target list is composed of objects being surveyed both for SETI and for other astrophysical interests. Dave Latham and colleagues have recently begun characterizing 11,000 F, G, and K dwarfs (2000 completed thus far) for possible observations by next generation targeted SETI searches. Specificall ...
... Our target list is composed of objects being surveyed both for SETI and for other astrophysical interests. Dave Latham and colleagues have recently begun characterizing 11,000 F, G, and K dwarfs (2000 completed thus far) for possible observations by next generation targeted SETI searches. Specificall ...
Poster - Astronomical Institute WWW Homepage
... of Jupiter are located approximately in one plane. This plane is inclined to the plane of an orbit of a planet, but remains parallel to itself in the course of the planet rotation around the Sun. Therefore two times a cycle time the plane of orbits of satellites crosses the directions from a planet ...
... of Jupiter are located approximately in one plane. This plane is inclined to the plane of an orbit of a planet, but remains parallel to itself in the course of the planet rotation around the Sun. Therefore two times a cycle time the plane of orbits of satellites crosses the directions from a planet ...
A Tidal Disruption Event Candidate from the 2XMM Catalog
... our 2013 Chandra observation, with peak luminosity near 1044 erg/s and lying toward the center of an inactive galaxy, thus probably a tidal disruption event. From its two ultrasoft Xray observations near the peak of unprecedented quality, we gain more insights into such event ...
... our 2013 Chandra observation, with peak luminosity near 1044 erg/s and lying toward the center of an inactive galaxy, thus probably a tidal disruption event. From its two ultrasoft Xray observations near the peak of unprecedented quality, we gain more insights into such event ...
a to z of astronomy
... together in the sky, but may be physically very distant from each other. BLACK BODY An imaginary object which absorbs with 100% efficiency at all wavelengths. It is quite well approximated by a hole in box. The energy emitted by a black body has a characteristic shape (the black body spectrum), whic ...
... together in the sky, but may be physically very distant from each other. BLACK BODY An imaginary object which absorbs with 100% efficiency at all wavelengths. It is quite well approximated by a hole in box. The energy emitted by a black body has a characteristic shape (the black body spectrum), whic ...
Inexpensive mount for a large millimeter
... California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA ([email protected]) Received 3 April 2014; revised 27 May 2014; accepted 30 May 2014; posted 2 June 2014 (Doc. ID 209561); published 4 July 2014 ...
... California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, USA ([email protected]) Received 3 April 2014; revised 27 May 2014; accepted 30 May 2014; posted 2 June 2014 (Doc. ID 209561); published 4 July 2014 ...
Deriving the detailed structure of EBs using the narrowband
... using the horizontal spectrograph of DST. From the obtained data we derived the light curve and the Doppler shift of core and wing components. As the result, it is conformed that the sporadic brightenings are associated with upward motion and EBs occur in the lower chromosphere. In this observation, ...
... using the horizontal spectrograph of DST. From the obtained data we derived the light curve and the Doppler shift of core and wing components. As the result, it is conformed that the sporadic brightenings are associated with upward motion and EBs occur in the lower chromosphere. In this observation, ...
On the nature of early-type emission line objects in NGC6611
... For certain of non ELS in the sample, the SED show an infrared excess, as well as for 5 of the ELS. The origin of this more or less strong infrared excess is a possible disk or cocoon around the central star. The presence of the infrared excess is compatible with Herbig Ae/Be stars or with PMS. This ...
... For certain of non ELS in the sample, the SED show an infrared excess, as well as for 5 of the ELS. The origin of this more or less strong infrared excess is a possible disk or cocoon around the central star. The presence of the infrared excess is compatible with Herbig Ae/Be stars or with PMS. This ...
My power point presentation on spectroscopy of stars (ppt file)
... • This star shows strong Zeeman splitting in almost every spectral line, due to a magnetic field of 14.5 kG (1.45 Tesla) • The trace elements in the atmosphere are stratified vertically and horizontally patchy. I have not included enough of these effects in my model to reproduce the observed spectru ...
... • This star shows strong Zeeman splitting in almost every spectral line, due to a magnetic field of 14.5 kG (1.45 Tesla) • The trace elements in the atmosphere are stratified vertically and horizontally patchy. I have not included enough of these effects in my model to reproduce the observed spectru ...
Prominences in H alpha and He II Spectrum of the Sun
... There are a lot of solar space telescopes. Even though the Sun is the closest star to our planet, it is still a big mystery. These telescopes help us very much and are crucial part of studying the Sun as a whole. From OSO (Orbiting Solar Observatories), Skylab and SMM (Solar Maximum Mission) to the ...
... There are a lot of solar space telescopes. Even though the Sun is the closest star to our planet, it is still a big mystery. These telescopes help us very much and are crucial part of studying the Sun as a whole. From OSO (Orbiting Solar Observatories), Skylab and SMM (Solar Maximum Mission) to the ...
HESS-II, an observatory for very high energies, proves its worth
... "The main challenge was to lower as much as possible the energy threshold, while keeping the signal above the enormous background noise" explains Mathieu de Naurois, from the Leprince Ringuet laboratory, co-director of the HESS collaboration. In the case of the most intense sources, the telescope ca ...
... "The main challenge was to lower as much as possible the energy threshold, while keeping the signal above the enormous background noise" explains Mathieu de Naurois, from the Leprince Ringuet laboratory, co-director of the HESS collaboration. In the case of the most intense sources, the telescope ca ...
Nebulae - Innovative Teachers BG
... medium by burned material. When the concentration of mass in certain parts of the gas-dust complexes is large enough, these regions begin to collapse under the force of Where stars are born gravity, leading to the formation of new stars inside. Many stars can be born in a cloud simultaneously - it d ...
... medium by burned material. When the concentration of mass in certain parts of the gas-dust complexes is large enough, these regions begin to collapse under the force of Where stars are born gravity, leading to the formation of new stars inside. Many stars can be born in a cloud simultaneously - it d ...
Chapter 23 The Milky Way Galaxy
... Observation of such events suggests that low-mass white dwarfs could account for as much as 20% of the mass needed. The rest is still a mystery. ...
... Observation of such events suggests that low-mass white dwarfs could account for as much as 20% of the mass needed. The rest is still a mystery. ...
4. Top level requirements
... In diffraction-limited observations and for fields of view larger than several arc seconds, the differential position displacement at different locations due to refraction may prevent long exposures. Unless the readout noise of detectors is extremely low (so that short exposure can be co-added after ...
... In diffraction-limited observations and for fields of view larger than several arc seconds, the differential position displacement at different locations due to refraction may prevent long exposures. Unless the readout noise of detectors is extremely low (so that short exposure can be co-added after ...
4242 MR304SC Spec.indd
... Specifications subject to change without notice. Pictures, schematics and other graphics contained herein are published for illustration purposes only and do not represent product configurations or functionality. User documentation accompanying the product is the exclusive source for functionality des ...
... Specifications subject to change without notice. Pictures, schematics and other graphics contained herein are published for illustration purposes only and do not represent product configurations or functionality. User documentation accompanying the product is the exclusive source for functionality des ...
Capturing Heaven - Communicating Astronomy with the Public Journal
... Simply put, how does one draw space? To answer this question, it is necessary to move beyond the details of “How do I do such and such in Photoshop?” I’ll say this right up front: this article is not going anywhere near the raw techniques needed to create celestial art. I’ve discussed this with a nu ...
... Simply put, how does one draw space? To answer this question, it is necessary to move beyond the details of “How do I do such and such in Photoshop?” I’ll say this right up front: this article is not going anywhere near the raw techniques needed to create celestial art. I’ve discussed this with a nu ...
SEPTEMBER LECTURE James W. Christy, discoverer of Charon
... Christy then checked all of the available plates taken of Pluto with the astrometric reflector... about 50- and found that the normal seeing disks on most were larger than the elongation. Only those taken under the very best seeing conditions were usable. Of these, he found two taken in 1965 which h ...
... Christy then checked all of the available plates taken of Pluto with the astrometric reflector... about 50- and found that the normal seeing disks on most were larger than the elongation. Only those taken under the very best seeing conditions were usable. Of these, he found two taken in 1965 which h ...
october 2008 - Mahoning Valley Astronomical Society
... luminous explosions in the universe. Most occur when a massive star runs out of nuclear fuel and their core collapses into a black hole or neutron star. Gas jets, punch through the star and blast into space where they strike gas previously shed by the star. It heats up generating a bright afterglow. ...
... luminous explosions in the universe. Most occur when a massive star runs out of nuclear fuel and their core collapses into a black hole or neutron star. Gas jets, punch through the star and blast into space where they strike gas previously shed by the star. It heats up generating a bright afterglow. ...
Powerpoint
... when part of a dust cloud begins to contract under its own gravitational force (remember, stars are ~1020 x denser than a molecular cloud). As it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. Probably new molecular clouds form continually out of less dense ...
... when part of a dust cloud begins to contract under its own gravitational force (remember, stars are ~1020 x denser than a molecular cloud). As it collapses, the center becomes hotter and hotter until nuclear fusion begins in the core. Probably new molecular clouds form continually out of less dense ...
doc - IRAM
... 2. What are the responsibilities of the different groups? 3. What is the procedure for testing the arrays and choosing one for the run? 4. Are we going to have regular telecons? IRAM Demonstration run: end of August. If we are not ready then we will jump by 1 month - i.e. end of September. 3 year ti ...
... 2. What are the responsibilities of the different groups? 3. What is the procedure for testing the arrays and choosing one for the run? 4. Are we going to have regular telecons? IRAM Demonstration run: end of August. If we are not ready then we will jump by 1 month - i.e. end of September. 3 year ti ...
Astronomical Techniques Course
... Given the VBT prime focus, find out the angular separation of the two stars in the sky? 13) Two images of a cluster taken 10 years apart showed that the cluster moved 10.5‟(arc-minute) right angles to the line of sight. Given the wavelength shift of 0.5A of H line, find the distance to the cluster? ...
... Given the VBT prime focus, find out the angular separation of the two stars in the sky? 13) Two images of a cluster taken 10 years apart showed that the cluster moved 10.5‟(arc-minute) right angles to the line of sight. Given the wavelength shift of 0.5A of H line, find the distance to the cluster? ...
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.