July 2005 - Western Nevada Astronomical Society
... Star gazing like a lot of other activities sometimes is more fun if enjoyed with a group of people. Members of the Western Nevada Astronomical Society hold star parties every Saturday night at the Jack C. Davis Observatory. These Saturday night events are for the general membership and the public is ...
... Star gazing like a lot of other activities sometimes is more fun if enjoyed with a group of people. Members of the Western Nevada Astronomical Society hold star parties every Saturday night at the Jack C. Davis Observatory. These Saturday night events are for the general membership and the public is ...
Seeing Gravitational Waves - Carnegie Observatories User Webpages
... Gravity is responsible for the long-range order of the universe. Using Einstein's general relativity, we now think of gravity as the geometrical curvature of the four-dimensional fabric of space-time (1). Extreme cosmological events such as the merging of neutron stars or black holes induce ripples ...
... Gravity is responsible for the long-range order of the universe. Using Einstein's general relativity, we now think of gravity as the geometrical curvature of the four-dimensional fabric of space-time (1). Extreme cosmological events such as the merging of neutron stars or black holes induce ripples ...
PPV_hd169142
... registered PSF template star observations (spectral types A0-A8; J-H ± 0.3 of HD 169142A), non-instrumentally scattered circumstellar light is seen in all PSF subtracted images where the underlying PSF structure is well matched to the HD 169142A observations. Fig. 2: 2MASS 18242929-2946559 is reveal ...
... registered PSF template star observations (spectral types A0-A8; J-H ± 0.3 of HD 169142A), non-instrumentally scattered circumstellar light is seen in all PSF subtracted images where the underlying PSF structure is well matched to the HD 169142A observations. Fig. 2: 2MASS 18242929-2946559 is reveal ...
Observations of V838 Mon light echo
... were performed with the 60 cm telescope of the SAI Crimean Station of and CCD PI VersArray and with the SAO 100 cm Zeiss with CCD EEV 42-40. Both CCDs are liquid-nitrogen cooled to the temperature of about -130 C. Johnson or Cousins R band filters were used. Field of CCD EEV 42-40 in the R band was ...
... were performed with the 60 cm telescope of the SAI Crimean Station of and CCD PI VersArray and with the SAO 100 cm Zeiss with CCD EEV 42-40. Both CCDs are liquid-nitrogen cooled to the temperature of about -130 C. Johnson or Cousins R band filters were used. Field of CCD EEV 42-40 in the R band was ...
Electromagnetic Waves
... 1. How can light teach us information about the stars? Since we are not able to travel to a star or take samples from a galaxy, we must depend on electromagnetic radiation to carry information to us from distant objects in space. The human eye is sensitive to a very small range of wavelengths ca ...
... 1. How can light teach us information about the stars? Since we are not able to travel to a star or take samples from a galaxy, we must depend on electromagnetic radiation to carry information to us from distant objects in space. The human eye is sensitive to a very small range of wavelengths ca ...
Announcements Evolution of High-Mass Stars: Red Supergiants
... The Halo has very little gas, and no new stars are forming there. The halo of the galaxy is populated by old stars. (Population II stars) ...
... The Halo has very little gas, and no new stars are forming there. The halo of the galaxy is populated by old stars. (Population II stars) ...
A-level Physics A Question paper Unit 5/W - Astrophysics
... (3) star Y, which is the same size as the Sun, but significantly cooler, (4) star Z, which is much smaller than the Sun, and has molecular bands as an important feature in its spectrum. (7 marks) ____ ...
... (3) star Y, which is the same size as the Sun, but significantly cooler, (4) star Z, which is much smaller than the Sun, and has molecular bands as an important feature in its spectrum. (7 marks) ____ ...
The correct answers are written in bold, italic and underlined. The
... • preferential scattering of blue starlight by fine dust grains. • scattering of this light from rapidly moving material, this light being Dopplershifted toward the red end of the spectrum. Fine particles of dust scatter blue light preferentially in a process similar to that which operates in our ow ...
... • preferential scattering of blue starlight by fine dust grains. • scattering of this light from rapidly moving material, this light being Dopplershifted toward the red end of the spectrum. Fine particles of dust scatter blue light preferentially in a process similar to that which operates in our ow ...
OUTSIDE THE SOLAR SYSTEM
... warmth fading out, we might have to be concerned with the Sun growing enormously and consuming Earth in its fiery gases. It may become a red giant long before it cools and becomes a nebula and finally a dwarf. However, and fortunately for us, these changes happen over millions or billions of years. ...
... warmth fading out, we might have to be concerned with the Sun growing enormously and consuming Earth in its fiery gases. It may become a red giant long before it cools and becomes a nebula and finally a dwarf. However, and fortunately for us, these changes happen over millions or billions of years. ...
Direct Imaging Detection of Planets
... contrast in an image of a star, allowing faint objects to be detected near the star. SEEDS (Strategic Exploration of Exoplanets and Disks with Subaru) used adaptive optics instrumentation on the Subaru telescope to carry out the first strategic, multi-year program on Subaru. Recently completed, it i ...
... contrast in an image of a star, allowing faint objects to be detected near the star. SEEDS (Strategic Exploration of Exoplanets and Disks with Subaru) used adaptive optics instrumentation on the Subaru telescope to carry out the first strategic, multi-year program on Subaru. Recently completed, it i ...
Celebrating the centennial of a celestial yardstick
... assume that it has smatterings of other heavy metals, including gold, silver, and platinum. The planet has also had abundant volcanic activity (and may have some ongoing activity today), which is involved in concentrating such elements. Yet the amounts of these elements, their distribution, and many ...
... assume that it has smatterings of other heavy metals, including gold, silver, and platinum. The planet has also had abundant volcanic activity (and may have some ongoing activity today), which is involved in concentrating such elements. Yet the amounts of these elements, their distribution, and many ...
STAR FORMATION (Ch. 19)
... of the view is a so-called starburst cluster dominated by young, hot Wolf-Rayet stars and early O-type stars. A torrent of ionizing radiation and fast stellar winds from these massive stars has blown a large cavity around the cluster (like the Local Superbubble you read about in ch. 18). The most sp ...
... of the view is a so-called starburst cluster dominated by young, hot Wolf-Rayet stars and early O-type stars. A torrent of ionizing radiation and fast stellar winds from these massive stars has blown a large cavity around the cluster (like the Local Superbubble you read about in ch. 18). The most sp ...
Document
... that extends away from the center to several 100 AU. The astronomical unit (1 AU = 1 5 1013 cm) is the mean distance between the Earth and the Sun. The collapsing cloud continues to deposit matter onto the accretion disk, and from there feeds the protostar. Like the planets, the accretion disk rot ...
... that extends away from the center to several 100 AU. The astronomical unit (1 AU = 1 5 1013 cm) is the mean distance between the Earth and the Sun. The collapsing cloud continues to deposit matter onto the accretion disk, and from there feeds the protostar. Like the planets, the accretion disk rot ...
NAME ASTRONOMY STAR PARTY
... 47. Before you leave the Star Party, point out the following astronomical objects to Murry: Ursa Major, Polaris, Ursa Minor, Sagittarius, the Milky Way, the Summer Triangle, Pegasus, Andromeda, Perseus, Cassiopeia and Saturn. Murry will initial question # 47 as soon as you are able to do this. ...
... 47. Before you leave the Star Party, point out the following astronomical objects to Murry: Ursa Major, Polaris, Ursa Minor, Sagittarius, the Milky Way, the Summer Triangle, Pegasus, Andromeda, Perseus, Cassiopeia and Saturn. Murry will initial question # 47 as soon as you are able to do this. ...
PH607lec12
... formation in a massive star cluster offset from the Galactic Centre that would have migrated to its current location once formed, or star formation within a massive, compact gas accretion disk around the central black-hole. It is interesting to note that most of these 100 young, massive stars seem t ...
... formation in a massive star cluster offset from the Galactic Centre that would have migrated to its current location once formed, or star formation within a massive, compact gas accretion disk around the central black-hole. It is interesting to note that most of these 100 young, massive stars seem t ...
Other Solar Systems Around Other Stars
... been detected in the atmospheres of various exoplanets in this way.[80][81] The technique might conceivably discover atmospheric characteristics that suggest the presence of life on an exoplanet, but no such discovery has yet been made. • Another line of information about exoplanetary atmospheres co ...
... been detected in the atmospheres of various exoplanets in this way.[80][81] The technique might conceivably discover atmospheric characteristics that suggest the presence of life on an exoplanet, but no such discovery has yet been made. • Another line of information about exoplanetary atmospheres co ...
Cherenkov Telescope Arrays Michael Daniel University of Durham
... ➢gives better angular resolution ➢gives better energy resolution ...
... ➢gives better angular resolution ➢gives better energy resolution ...
Telescopes: Windows to the Universe
... Photometry is the measurement of light intensity from a source, either the total intensity or the intensity at each of various wavelengths. Early photometers were like a camera’s light meter; modern photometers use a CCD for greater speed and accuracy. Timing: one can measure the time it takes for a ...
... Photometry is the measurement of light intensity from a source, either the total intensity or the intensity at each of various wavelengths. Early photometers were like a camera’s light meter; modern photometers use a CCD for greater speed and accuracy. Timing: one can measure the time it takes for a ...
The Milky Way as a Spiral galaxy
... •A composite of 77 photographs showing details of the star clouds in the Milky Way. By the early 1900’s the dark areas were understood to be obscuring clouds of dust and gas. This source of interstellar absorption invalidated the star counts Herschel (and later astronomers) used to estimate the siz ...
... •A composite of 77 photographs showing details of the star clouds in the Milky Way. By the early 1900’s the dark areas were understood to be obscuring clouds of dust and gas. This source of interstellar absorption invalidated the star counts Herschel (and later astronomers) used to estimate the siz ...
Gravity`s Influence on the Development of the Solar System
... Jovian planet. Due to the low temperature, hydrogen and helium gases moved relatively slowly and were easily captured by the gravitational force of the newly formed core of rock and ice. As the Jovian core accreted more and more hydrogen, it became more massive. Helium atoms were also present, but i ...
... Jovian planet. Due to the low temperature, hydrogen and helium gases moved relatively slowly and were easily captured by the gravitational force of the newly formed core of rock and ice. As the Jovian core accreted more and more hydrogen, it became more massive. Helium atoms were also present, but i ...
Midterm 1 Completion What is the official name of the special star
... a) Retrograde motion is when a planet appears to change direction in the sky from the Earth’s point of view. It is the apparent backwards and forward motion of a planet. In actuality, the planet is not changing directions, it just appears to do so. b) Ptolemy said that we live in a geo-centric Unive ...
... a) Retrograde motion is when a planet appears to change direction in the sky from the Earth’s point of view. It is the apparent backwards and forward motion of a planet. In actuality, the planet is not changing directions, it just appears to do so. b) Ptolemy said that we live in a geo-centric Unive ...
The Cosmic Microwave Background Radiation Temperature
... detached from the re ector suggest the stray contribution from building walls may be a few degrees K, depending on pointing direction. (By itself, the feed acts as an antenna with a much broader beam, but with minimal sidelobes.) Signi cant contamination from the Sun and the inner Milky Way, near ea ...
... detached from the re ector suggest the stray contribution from building walls may be a few degrees K, depending on pointing direction. (By itself, the feed acts as an antenna with a much broader beam, but with minimal sidelobes.) Signi cant contamination from the Sun and the inner Milky Way, near ea ...
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.