The HIRES science case
... HIRES will also be an extremely efficient machine to trace the metal enrichment pattern and dynamics of extragalactic star clusters, hence tracing the star formation history in other galaxies, if enabled with some multiplexing capability (~5-10 objects over a FoV of a few arcmin) with intermediate s ...
... HIRES will also be an extremely efficient machine to trace the metal enrichment pattern and dynamics of extragalactic star clusters, hence tracing the star formation history in other galaxies, if enabled with some multiplexing capability (~5-10 objects over a FoV of a few arcmin) with intermediate s ...
File 11 - School of Astronomy, IPM
... Galaxy Morphology Discovering Galaxies • In late 1700, Messier made a catalog of 109 nebulae so that comet hunters wouldn’t mistake them for comets! ~40 of these were galaxies • NGC New General Catalogue (Dreyer 1888) had 7840 objects, of which ~50% were galaxies • In the 20th century, many catalog ...
... Galaxy Morphology Discovering Galaxies • In late 1700, Messier made a catalog of 109 nebulae so that comet hunters wouldn’t mistake them for comets! ~40 of these were galaxies • NGC New General Catalogue (Dreyer 1888) had 7840 objects, of which ~50% were galaxies • In the 20th century, many catalog ...
UvA-DARE (Digital Academic Repository)
... The intermediate regime: Growth of dust grains is most difficult to understand in the regime where grains are too large to grow by coagulation (Blum & Wurm 2008), but too small to grow by gravitational interaction. In addition, should particles reach one meter in size, they would feel a strong headw ...
... The intermediate regime: Growth of dust grains is most difficult to understand in the regime where grains are too large to grow by coagulation (Blum & Wurm 2008), but too small to grow by gravitational interaction. In addition, should particles reach one meter in size, they would feel a strong headw ...
The ALMA Universe - ALMA Observatory
... Above: ALMA reached a halfway point in May 2012, when its thirty-third antenna was brought up to the Chajnantor Plateau at 5,000 meters altitude. Credit: ALMA (ESO/NAOJ/NRAO), J. Guarda (ALMA). Front Page: View of the Antennae galaxies combining ALMA observations — shown here in pink, red, and yello ...
... Above: ALMA reached a halfway point in May 2012, when its thirty-third antenna was brought up to the Chajnantor Plateau at 5,000 meters altitude. Credit: ALMA (ESO/NAOJ/NRAO), J. Guarda (ALMA). Front Page: View of the Antennae galaxies combining ALMA observations — shown here in pink, red, and yello ...
Towards the Intensity Interferometry Stellar Imaging System
... to image hot stars (typical diameters < 1 mas) SAI would need considerably longer baselines, and would need to operate in the visible (difficult) or blue (very difficult). Intensity interferometry is well matched to blue/visible operation, and scales to long baselines with ease (the atmospheric stab ...
... to image hot stars (typical diameters < 1 mas) SAI would need considerably longer baselines, and would need to operate in the visible (difficult) or blue (very difficult). Intensity interferometry is well matched to blue/visible operation, and scales to long baselines with ease (the atmospheric stab ...
Direct Detection of Galactic Halo Dark Matter
... the observed rotational characteristics of the galaxy’s spiral disk. A substantial portion of this unseen matter may be old, very cool white dwarfs (1–4). A white dwarf is the extremely dense end-state in the evolution of stars with masses less than about eight times the mass of the sun (MJ). Once a ...
... the observed rotational characteristics of the galaxy’s spiral disk. A substantial portion of this unseen matter may be old, very cool white dwarfs (1–4). A white dwarf is the extremely dense end-state in the evolution of stars with masses less than about eight times the mass of the sun (MJ). Once a ...
Sec 30.1 - Highland High School
... Astronomers discovered that globular clusters are far from our solar system, and that their distribution in space is centered on a distance point 28,000 light-years (ly) away. The galactic center is a region of high star density, much of which is obscured by interstellar gas and dust. ...
... Astronomers discovered that globular clusters are far from our solar system, and that their distribution in space is centered on a distance point 28,000 light-years (ly) away. The galactic center is a region of high star density, much of which is obscured by interstellar gas and dust. ...
our knowledge of high-mass star formation at the dawn of - CEA-Irfu
... high-mass star formation have been called massive starless or pre-stellar cores, massive cold molecular cores, or even infrared-dark clouds. In the subsequent phase, they have been named massive protostars, high-mass protostellar objects, or hot molecular cores. The better-known final phase would co ...
... high-mass star formation have been called massive starless or pre-stellar cores, massive cold molecular cores, or even infrared-dark clouds. In the subsequent phase, they have been named massive protostars, high-mass protostellar objects, or hot molecular cores. The better-known final phase would co ...
Lecture21 - Michigan State University
... towards us • These measurements were announced in 1914, years before Hubble found that these spiral nebula were galaxies and before anyone knew how far away they were ISP 205 - Astronomy Gary D. Westfall ...
... towards us • These measurements were announced in 1914, years before Hubble found that these spiral nebula were galaxies and before anyone knew how far away they were ISP 205 - Astronomy Gary D. Westfall ...
3. The MONS Telescope requirements
... calibrated relative to a reference source that is supposed to represent a stable light source or a light source that contain the same drift as the target source. This leads to the first requirement for the MONS payload: The main data from MONS should be differential photometry There are three ways o ...
... calibrated relative to a reference source that is supposed to represent a stable light source or a light source that contain the same drift as the target source. This leads to the first requirement for the MONS payload: The main data from MONS should be differential photometry There are three ways o ...
Chandra Mission Scheduling On-Orbit Experience
... Since not all vehicle constraints impact mission scheduling and since the CARD was designed for engineers, not schedulers, a second constraint document, the Mission Planning Guidelines, was created several years into the mission. This document provides the schedulers with a prioritized list of the r ...
... Since not all vehicle constraints impact mission scheduling and since the CARD was designed for engineers, not schedulers, a second constraint document, the Mission Planning Guidelines, was created several years into the mission. This document provides the schedulers with a prioritized list of the r ...
Discovery of two new satellites of Pluto
... F606W (‘Broad V’) filter, which has a centre wavelength of 591.8 nm and a width of 67.2 nm, was used for all images. At the time of the observations, Pluto was 31.0 astronomical units (AU ) from the Sun, 30.1 AU from the Earth, and had a solar phase angle of 0.968 on 15 May and 0.888 on 18 May. Iden ...
... F606W (‘Broad V’) filter, which has a centre wavelength of 591.8 nm and a width of 67.2 nm, was used for all images. At the time of the observations, Pluto was 31.0 astronomical units (AU ) from the Sun, 30.1 AU from the Earth, and had a solar phase angle of 0.968 on 15 May and 0.888 on 18 May. Iden ...
271–274
... Though large ground-based optical telescopes have large light collecting capacity, the Earth's turbulent atmosphere degrades their resolution (smallest detectable angular separation) to a value far poorer than the Rayleigh limit corresponding to their diameter. Random density fluctuations associated ...
... Though large ground-based optical telescopes have large light collecting capacity, the Earth's turbulent atmosphere degrades their resolution (smallest detectable angular separation) to a value far poorer than the Rayleigh limit corresponding to their diameter. Random density fluctuations associated ...
script
... Background: Very few people have a comprehensive view of our place in the universe. They think about astronomical objects as disconnected elements, rather than an integrated system. This demonstration takes visitors from our Solar System, the part of the universe with which they are most familiar, o ...
... Background: Very few people have a comprehensive view of our place in the universe. They think about astronomical objects as disconnected elements, rather than an integrated system. This demonstration takes visitors from our Solar System, the part of the universe with which they are most familiar, o ...
Astronomy 16: Introduction
... - condensation in winds of cool giants & of AGBs - expanding/cooling ejecta of novae & supernovae • Critical role in astrochemistry : site of molecule formation - e.g. H2 molecule can never form by 2 H atoms colliding: tcollision 10-13 sec, tbond formation 10-9 sec → so atoms will usually just reb ...
... - condensation in winds of cool giants & of AGBs - expanding/cooling ejecta of novae & supernovae • Critical role in astrochemistry : site of molecule formation - e.g. H2 molecule can never form by 2 H atoms colliding: tcollision 10-13 sec, tbond formation 10-9 sec → so atoms will usually just reb ...
Lokal fulltext - Chalmers Publication Library
... in 1984 at Vega (α Lyrae, spectral class A0 V) by Aumann et al. (1984) with IRAS (Infrared Astronomical Satellite). However, as they saw the dust emission only in the spectral energy distribution (SED) they could not infer any shape. The excess is beyond 12 µm and peaks close to 60 µm. They interpre ...
... in 1984 at Vega (α Lyrae, spectral class A0 V) by Aumann et al. (1984) with IRAS (Infrared Astronomical Satellite). However, as they saw the dust emission only in the spectral energy distribution (SED) they could not infer any shape. The excess is beyond 12 µm and peaks close to 60 µm. They interpre ...
CFA - 5th Unit 2 Saturn
... d. Saturn rotates too quickly 3. What is one reason humans cannot live on Saturn? a. Saturn has more rings than other planets. b. Saturn rotates quicker than Earth. c. Saturn is so light; it could float. d. Saturn is made up mostly of hydrogen and helium which are deadly gases. 4. How did the telesc ...
... d. Saturn rotates too quickly 3. What is one reason humans cannot live on Saturn? a. Saturn has more rings than other planets. b. Saturn rotates quicker than Earth. c. Saturn is so light; it could float. d. Saturn is made up mostly of hydrogen and helium which are deadly gases. 4. How did the telesc ...
acc
... Worst case, where everything interacts: – As many choice variables as there are readings – Packing blows up, and becomes exponential ...
... Worst case, where everything interacts: – As many choice variables as there are readings – Packing blows up, and becomes exponential ...
Giuseppe Piazzi and the Discovery of Ceres
... accurate enough to mount an effective search. In fact, the problem with which astronomers and mathematicians were confronted was “to determine the orbit of a celestial body, without making any hypothesis, from observations covering a space neither too large nor such as to allow the special methods t ...
... accurate enough to mount an effective search. In fact, the problem with which astronomers and mathematicians were confronted was “to determine the orbit of a celestial body, without making any hypothesis, from observations covering a space neither too large nor such as to allow the special methods t ...
Galaxy Structure
... stars in the inner Galaxy are based on the NIR data from the DIRBE experiment on COBE. The gravitational potential of the stars can then be connected with the available gas and stellar kinematic observations in order to study the large-scale structure and dynamics of the Milky Way Galaxy. Since even ...
... stars in the inner Galaxy are based on the NIR data from the DIRBE experiment on COBE. The gravitational potential of the stars can then be connected with the available gas and stellar kinematic observations in order to study the large-scale structure and dynamics of the Milky Way Galaxy. Since even ...
Swanson User Manual - Von Braun Astronomical Society
... sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telescope is large and massive, it does not require brute strength to operate. If the scope resi ...
... sprays, and smoking. Both will damage optics. Do not attempt to clean the optics. The only person authorized to clean the optics is the observatory director. • Leave The Gorillas At Home. -- Although the telescope is large and massive, it does not require brute strength to operate. If the scope resi ...
Galaxies
... protogalactic clouds that were able to cool and form stars before gas settled into a disk ...
... protogalactic clouds that were able to cool and form stars before gas settled into a disk ...
NexStar GT - Celestron
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
... location entered. Press INFO to read information about the object displayed. Press the DOWN scroll key to display the next object. Press ENTER to slew to (go to) the displayed object. ...
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.