May 2017 - Bays Mountain Park
... Imaging Conference) and the astronomy convention was called NEAF (Northeast Astronomy Forum). Some of you may have heard of them or may have even been to one or both. If you have not, I highly recommend taking the time to go one year. The events are held in Suffern, NY, just outside of New York City. ...
... Imaging Conference) and the astronomy convention was called NEAF (Northeast Astronomy Forum). Some of you may have heard of them or may have even been to one or both. If you have not, I highly recommend taking the time to go one year. The events are held in Suffern, NY, just outside of New York City. ...
Project Descriptions - UCI Physics and Astronomy
... motions of the four satellites of Saturn. Investigate their positions for the dates that you are schedule to observe at the UCI Observatory. See the observatory schedule on the web at http://wwww.physics.uci.edu/˜observat/cosmos schedule.html and assume you’ll be working from about 9 pm to midnight ...
... motions of the four satellites of Saturn. Investigate their positions for the dates that you are schedule to observe at the UCI Observatory. See the observatory schedule on the web at http://wwww.physics.uci.edu/˜observat/cosmos schedule.html and assume you’ll be working from about 9 pm to midnight ...
Binaries
... Gravitational Force = Centripetal Force Me = v2Rm/G Similarly we can calculate the Sun’s mass using Earth’s orbit. We need at least two object rotating around each other to calculate the mass of them. ...
... Gravitational Force = Centripetal Force Me = v2Rm/G Similarly we can calculate the Sun’s mass using Earth’s orbit. We need at least two object rotating around each other to calculate the mass of them. ...
Overview of Technologies for Direct Optical Imaging of Exoplanets
... Task Force [3], and the findings of the Exoplanet Community Report on Direct Optical Imaging [4]. The execution of a mission as ambitious and challenging as finding life on planets around other stars requires careful evaluation of potential technological approaches. Following the strong endorsement ...
... Task Force [3], and the findings of the Exoplanet Community Report on Direct Optical Imaging [4]. The execution of a mission as ambitious and challenging as finding life on planets around other stars requires careful evaluation of potential technological approaches. Following the strong endorsement ...
GG_CERN_0707
... Among the first systems to collapse, form stars Star formation history and chemical enrichment are sensitive probes of stellar ‘feedback’, galactic winds, ...
... Among the first systems to collapse, form stars Star formation history and chemical enrichment are sensitive probes of stellar ‘feedback’, galactic winds, ...
1 Marsbugs: The Electronic Astrobiology Newsletter, Volume 12
... criteria. As more are discovered, Spitzer will be able to collect their light—a bonus for the observatory, considering it was not originally designed to see extrasolar planets. NASA's future Terrestrial Planet Finder coronagraph, set to launch in 2016, will be able to directly image extrasolar plane ...
... criteria. As more are discovered, Spitzer will be able to collect their light—a bonus for the observatory, considering it was not originally designed to see extrasolar planets. NASA's future Terrestrial Planet Finder coronagraph, set to launch in 2016, will be able to directly image extrasolar plane ...
Ground-based observations of Kepler asteroseismic targets
... stars that are candidates for Kepler asteroseismic targets to determine their atmospheric parameters: Teff, logg, and [Fe/H], and to measure their radial velocity, vr ,and projected rotational velocity, v sin i ...
... stars that are candidates for Kepler asteroseismic targets to determine their atmospheric parameters: Teff, logg, and [Fe/H], and to measure their radial velocity, vr ,and projected rotational velocity, v sin i ...
Measuring Stars
... Globular cluster 47 Tucana, MS turnoff has reached Sun like stars well developed radiant and white dwarf branches. So it has to be more than 10 billion years old. ...
... Globular cluster 47 Tucana, MS turnoff has reached Sun like stars well developed radiant and white dwarf branches. So it has to be more than 10 billion years old. ...
Chapter 17
... 17. The "orbits" of the stars in our galaxy do not follow the laws of Kepler. We understand this to be due to: A. proportionally more mass distributed away from the galactic center. B. angular momentum is not being conserved as the Galaxy rotates. C. his laws are supplanted by Einstein's relativity. ...
... 17. The "orbits" of the stars in our galaxy do not follow the laws of Kepler. We understand this to be due to: A. proportionally more mass distributed away from the galactic center. B. angular momentum is not being conserved as the Galaxy rotates. C. his laws are supplanted by Einstein's relativity. ...
Alpha Centauri 3
... disrupt the orbit of the planet. Recent numerical integrations, however, suggest that stable planetary orbits exist: within three AUs (four AUs for retrograde orbits) of either Alpha Centauri A or B in the plane of the binary's orbit; only as far as 0.23 AU for 90-degree inclined orbits; and beyond ...
... disrupt the orbit of the planet. Recent numerical integrations, however, suggest that stable planetary orbits exist: within three AUs (four AUs for retrograde orbits) of either Alpha Centauri A or B in the plane of the binary's orbit; only as far as 0.23 AU for 90-degree inclined orbits; and beyond ...
Planets orbiting stars more massive than the Sun
... surveys for planets of these types of stars are not efficient (Desort 2009a; Desort 2009b; Guenther et al. 2009; Galland et al. 2006; Galland et al. 2010; Borgniet et al. 2014). Transit surveys are more suitable, because they do not suffer from these difficulties. The only challenges of transit surv ...
... surveys for planets of these types of stars are not efficient (Desort 2009a; Desort 2009b; Guenther et al. 2009; Galland et al. 2006; Galland et al. 2010; Borgniet et al. 2014). Transit surveys are more suitable, because they do not suffer from these difficulties. The only challenges of transit surv ...
Seeing dark matter in the Andromeda galaxy
... zling that stars far from the center traveled as fast as those much closer to the center. However, we chose not to extend the curve beyond the final measurement by using a decreasing Newtonian inverse square velocity, the common practice at that time. Instead, we wrote “extrapolation beyond that poi ...
... zling that stars far from the center traveled as fast as those much closer to the center. However, we chose not to extend the curve beyond the final measurement by using a decreasing Newtonian inverse square velocity, the common practice at that time. Instead, we wrote “extrapolation beyond that poi ...
Review Sheet and Study Hints - Tufts Institute of Cosmology
... draw evolutionary tracks in the HRD for stars of different masses comment on relative evolutionary time-scales globular cluster HRD’s main sequence turnoff and ages distance determinations use the HRD to determine star-formation histories in galaxies ...
... draw evolutionary tracks in the HRD for stars of different masses comment on relative evolutionary time-scales globular cluster HRD’s main sequence turnoff and ages distance determinations use the HRD to determine star-formation histories in galaxies ...
at A-stars?
... distance (apparent brightness tracks luminosity well) • All formed about the same time (i.e. all are same age) • Range of different mass stars! ...
... distance (apparent brightness tracks luminosity well) • All formed about the same time (i.e. all are same age) • Range of different mass stars! ...
Supermassive Black Holes in Inactive Galaxies Encyclopedia of Astronomy & Astrophysics eaa.iop.org
... small as –1 each. In fact, they can largely cancel the first two terms, because the second term cannot be larger than +1, and the first is ≃1 in many galaxies. This explains why ad hoc anisotropic models have been so successful in explaining the kinematics of giant ellipticals without BHs. However, ...
... small as –1 each. In fact, they can largely cancel the first two terms, because the second term cannot be larger than +1, and the first is ≃1 in many galaxies. This explains why ad hoc anisotropic models have been so successful in explaining the kinematics of giant ellipticals without BHs. However, ...
Planets - Cardinal Hayes High School
... Planets. Jupiter, Saturn, Uranus, • Large size – Giants and Neptune are the farthest planets to the sun. • Farthest from the sun (long period of revolution) These four planets are giants and composed of • Fast Rotation gas. These planets are less dense. ...
... Planets. Jupiter, Saturn, Uranus, • Large size – Giants and Neptune are the farthest planets to the sun. • Farthest from the sun (long period of revolution) These four planets are giants and composed of • Fast Rotation gas. These planets are less dense. ...
Birth of Stars - High Energy Physics at Wayne State
... Low mass stars are more common. For main sequence stars, mass and luminosity are related such that high mass stars have high luminosity and low mass stars have low luminosity. Galaxies, like the Milky Way, contain enough gas and dust to create billions of new stars. February 14, 2006 ...
... Low mass stars are more common. For main sequence stars, mass and luminosity are related such that high mass stars have high luminosity and low mass stars have low luminosity. Galaxies, like the Milky Way, contain enough gas and dust to create billions of new stars. February 14, 2006 ...
Interacting Galaxies
... While galaxies collide, with very rare exceptions, the stars within them do not. This is because so much of a galaxy is simply empty space, with distances between stars about 100 million times larger than their stellar diameters. What collides is the gas and dust between the stars, which produces a ...
... While galaxies collide, with very rare exceptions, the stars within them do not. This is because so much of a galaxy is simply empty space, with distances between stars about 100 million times larger than their stellar diameters. What collides is the gas and dust between the stars, which produces a ...
Age Aspects of Habitability
... A habitable zone of a star is defined as a range of orbits within which a rocky planet can support liquid water on its surface. The most intriguing question driving the search for habitable planets is whether they host life. But is the age of the planet important for its habitability? If we define h ...
... A habitable zone of a star is defined as a range of orbits within which a rocky planet can support liquid water on its surface. The most intriguing question driving the search for habitable planets is whether they host life. But is the age of the planet important for its habitability? If we define h ...
Document
... Discovered by Halley who noticed that Sirius, Arcturus, and Aldebaran were over ½ degree away from the positions Hipparcos measured 1850 years earlier ...
... Discovered by Halley who noticed that Sirius, Arcturus, and Aldebaran were over ½ degree away from the positions Hipparcos measured 1850 years earlier ...
the life cycles of stars (5) - U3A Bendigo Courses / Activities
... Ceti is an LPV (Long Period Variable) with a pulsation period of about 11 months. When bright (for about 2 months) it is about 3rd or 4th magnitude. When dim (most of the time) it is invisible. There would be some years when it was not seen at all, hence its name. This photograph in UV was taken i ...
... Ceti is an LPV (Long Period Variable) with a pulsation period of about 11 months. When bright (for about 2 months) it is about 3rd or 4th magnitude. When dim (most of the time) it is invisible. There would be some years when it was not seen at all, hence its name. This photograph in UV was taken i ...
The Search for Extrasolar Planets
... This orbital motion of the host star can nevertheless be detected through the method of radial velocities. In this method, the observers exploit the Doppler effect in order to measure the radial component of the star’s motion (i.e. its lineof-sight component). A periodic variation in the radial velo ...
... This orbital motion of the host star can nevertheless be detected through the method of radial velocities. In this method, the observers exploit the Doppler effect in order to measure the radial component of the star’s motion (i.e. its lineof-sight component). A periodic variation in the radial velo ...
Slides from the talk
... cluster's two clouds of hot x-ray emitting gas shown in red. Representing even more mass than the optical galaxies and xray gas combined, the blue hues show the distribution of dark matter in the cluster. Otherwise invisible to telescopic views, the dark matter was mapped by observations of gravitat ...
... cluster's two clouds of hot x-ray emitting gas shown in red. Representing even more mass than the optical galaxies and xray gas combined, the blue hues show the distribution of dark matter in the cluster. Otherwise invisible to telescopic views, the dark matter was mapped by observations of gravitat ...
Space Interferometry Mission
The Space Interferometry Mission, or SIM, also known as SIM Lite (formerly known as SIM PlanetQuest), was a planned space telescope developed by the U.S. National Aeronautics and Space Administration (NASA), in conjunction with contractor Northrop Grumman. One of the main goals of the mission was the hunt for Earth-sized planets orbiting in the habitable zones of nearby stars other than the Sun. SIM was postponed several times and finally cancelled in 2010.In addition to hunting for extrasolar planets, SIM would have helped astronomers construct a map of the Milky Way galaxy. Other important tasks would have included collecting data to help pinpoint stellar masses for specific types of stars, assisting in the determination of the spatial distribution of dark matter in the Milky Way and in the Local Group of galaxies and using the gravitational microlensing effect to measure the mass of stars.The spacecraft would have used optical interferometry to accomplish these and other scientific goals. This technique collects light with multiple mirrors (in SIM's case, two) which is combined to make an interference pattern which can be very precisely measured.The initial contracts for SIM Lite were awarded in 1998, totaling US$200 million. Work on the SIM project required scientists and engineers to move through eight specific new technology milestones, and by November 2006, all eight had been completed.SIM Lite was originally scheduled for a 2005 launch, aboard an Evolved Expendable Launch Vehicle (EELV). As a result of continued budget cuts, the launch date has been pushed back at least five times. NASA has set a preliminary launch date for 2015 and U.S. federal budget documents confirm that a launch date is expected ""no earlier"" than 2015. The budget cuts to SIM Lite are expected to continue through FY 2010. As of February 2007, many of the engineers working on the SIM program had moved on to other areas and projects, and NASA directed the project to allocate its resources toward engineering risk reduction. However, the preliminary budget for NASA for 2008 included zero dollars for SIM.In December 2007, the Congress restored funding for fiscal year 2008 as part of an omnibus appropriations bill which the President later signed. At the same time the Congress directed NASA to move the mission forward to the development phase. In 2009 the project continued its risk reduction work while waiting for the findings and recommendations of the Astronomy and Astrophysics Decadal Survey, Astro2010, performed by the National Academy of Sciences, which would determine the project's future.On 13 August 2010, the Astro2010 Decadal Report was released and did not recommend that NASA continue the development of the SIM Lite Astrometric Observatory. This prompted NASA Astronomy and Physics Director, Jon Morse, to issue a letter on 24 September 2010 to the SIM Lite project manager, informing him that NASA was discontinuing its sponsorship of the SIM Lite mission and directing the project to discontinue Phase B activities immediately or as soon as practical. Accordingly, all SIM Lite activities were closed down by the end of calendar year 2010.