Celebrating the centennial of a celestial yardstick
... graduate — even if she suffered the economic disadvantage of being female — a wage of 30 cents an hour was not large. After Leavitt returned to Harvard in August 1902, her new project involved looking at photographic plates to find variable stars (stars that change brightness) in the Small and Large ...
... graduate — even if she suffered the economic disadvantage of being female — a wage of 30 cents an hour was not large. After Leavitt returned to Harvard in August 1902, her new project involved looking at photographic plates to find variable stars (stars that change brightness) in the Small and Large ...
Hubble Space Telescope Image
... The Universe is filled with these star systems which themselves cluster together into larger systems. Earth & Space Science March 2015 ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. Earth & Space Science March 2015 ...
Part A
... • A spectroscope spreads light into different wavelengths. • Using spectroscopes, astronomers can study stars’ characteristics, including temperatures, compositions, and energies. ...
... • A spectroscope spreads light into different wavelengths. • Using spectroscopes, astronomers can study stars’ characteristics, including temperatures, compositions, and energies. ...
Planet Discoverer Interferometer I: PD!, a potential precursor to
... The major event since the release of the Ex-NPS report is the dramatic development of low-cost lightweight optics for NGST. Steward Observatory Mirror Lab has modified technology that was being developed to make adaptive optics secondaries for the MMT conversion and for the Large Binocular Telescope ...
... The major event since the release of the Ex-NPS report is the dramatic development of low-cost lightweight optics for NGST. Steward Observatory Mirror Lab has modified technology that was being developed to make adaptive optics secondaries for the MMT conversion and for the Large Binocular Telescope ...
PDF of story and photos
... Why study the Orion Nebula? Astronomers study star-forming regions to learn how stars are born and how they change over time. Each star in Orion tells a story and adds to a fuller picture of star formation. In stellar nurseries, many stars often form in the same cloud of gas and dust. The biggest st ...
... Why study the Orion Nebula? Astronomers study star-forming regions to learn how stars are born and how they change over time. Each star in Orion tells a story and adds to a fuller picture of star formation. In stellar nurseries, many stars often form in the same cloud of gas and dust. The biggest st ...
No Slide Title
... What is the rare astronomical event involving the explosion of the majority of the material in a star, which results in an extremely bright, short-lived object that gives off vast quantities of energy? ...
... What is the rare astronomical event involving the explosion of the majority of the material in a star, which results in an extremely bright, short-lived object that gives off vast quantities of energy? ...
Stars and Galaxies - La Salle Elementary Public Schools No 122
... • The sky is divided into 88 constellations. • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as ...
... • The sky is divided into 88 constellations. • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as ...
File
... range from age of galaxy to new • spiral arms form as sustained density waves; where majority of star formation occurs ...
... range from age of galaxy to new • spiral arms form as sustained density waves; where majority of star formation occurs ...
an all-sky extrasolar planet survey with multiple object, dispersed
... The All-Sky Extrasolar Planet Survey (ASEPS) is to use wide-field telescopes (initially the Sloan telescope, later with larger aperture wide-field telescopes) and new generation high-throughput multiple object Doppler instruments to monitor millions of nearby bright stars for detecting tens of thous ...
... The All-Sky Extrasolar Planet Survey (ASEPS) is to use wide-field telescopes (initially the Sloan telescope, later with larger aperture wide-field telescopes) and new generation high-throughput multiple object Doppler instruments to monitor millions of nearby bright stars for detecting tens of thous ...
2.3 Peculiar galaxies
... Black hole accretion discs. If the available gas simply fell radially downwards towards the black hole, the energy it would gain would be kinetic energy, and it wouldn’t give much radiation; it would just disappear down the black hole. However, if, as is very likely, the gas is rotating around the b ...
... Black hole accretion discs. If the available gas simply fell radially downwards towards the black hole, the energy it would gain would be kinetic energy, and it wouldn’t give much radiation; it would just disappear down the black hole. However, if, as is very likely, the gas is rotating around the b ...
Slide 1
... LMC is falling in for the first time. And it only took a couple of years between epochs. In passing, what we gain is the superb precision. The good measurement is only different from the ground-based by 1.5x the error in the ground-based (errors in ground-based are large, ...
... LMC is falling in for the first time. And it only took a couple of years between epochs. In passing, what we gain is the superb precision. The good measurement is only different from the ground-based by 1.5x the error in the ground-based (errors in ground-based are large, ...
Death of Stars notes
... explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, but couldn’t be sure that the dust wasn’t destroyed in the “rebound” shock wave when the expanding supernova remnant collided with the interstellar medium of thinly scattered m ...
... explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, but couldn’t be sure that the dust wasn’t destroyed in the “rebound” shock wave when the expanding supernova remnant collided with the interstellar medium of thinly scattered m ...
Distances farther out
... Eg of eclipsing binary pairs: Mira variables, Algol (β Persei) Eclipse analysis give us several spectral parameters: - time taken by one star to cover another: diameter. - drop in observed intensity during eclipse: relative surface brightness of 2 stars, hence temperature. - mass of stars: if spectr ...
... Eg of eclipsing binary pairs: Mira variables, Algol (β Persei) Eclipse analysis give us several spectral parameters: - time taken by one star to cover another: diameter. - drop in observed intensity during eclipse: relative surface brightness of 2 stars, hence temperature. - mass of stars: if spectr ...
View slides as PowerPoint
... • Inner belt at 2-3 AU is close to RV planet ε Eri b (a= 3.4 AU) • Eccentricity of the RV planet is unlikely to be 0.7 (Benedict et al. 2006), as this would disrupt the inner belt. • e= 0.3 +/- 0.23 is current value on exoplanets.org ; much more consistent with Spitzer results. • This picture only a ...
... • Inner belt at 2-3 AU is close to RV planet ε Eri b (a= 3.4 AU) • Eccentricity of the RV planet is unlikely to be 0.7 (Benedict et al. 2006), as this would disrupt the inner belt. • e= 0.3 +/- 0.23 is current value on exoplanets.org ; much more consistent with Spitzer results. • This picture only a ...
TMSP Stellar Evolution & Life
... laboratories with elements heated to gaseous states, we now have a catalog of elemental spectra. •Using this catalog, we now look at stars through a spectroscope and see what they’re made of… ...
... laboratories with elements heated to gaseous states, we now have a catalog of elemental spectra. •Using this catalog, we now look at stars through a spectroscope and see what they’re made of… ...
Planets and Moons - Fraser Heights Chess Club
... and billions of stars held together by gravity. One galaxy can have hundreds of billions of stars and be as large as 200,000 light years across. • Galaxy is derived from the Greek galaxias meaning "milky", a reference to the Milky Way. • Many galaxies are believed to have black holes at their active ...
... and billions of stars held together by gravity. One galaxy can have hundreds of billions of stars and be as large as 200,000 light years across. • Galaxy is derived from the Greek galaxias meaning "milky", a reference to the Milky Way. • Many galaxies are believed to have black holes at their active ...
ph709-08-3b - Centre for Astrophysics and Planetary Science
... between 582 and 638 nm yields a photometric time series with 80 s time sampling and relative precision of about 1.1 × 10-4 per sample. The folded light curve can be fitted within observational errors using a model consisting of an opaque circular planet transiting a limb-darkened stellar disk. In th ...
... between 582 and 638 nm yields a photometric time series with 80 s time sampling and relative precision of about 1.1 × 10-4 per sample. The folded light curve can be fitted within observational errors using a model consisting of an opaque circular planet transiting a limb-darkened stellar disk. In th ...
Darwin – A Mission to Detect, and Search for Life on, Extrasolar
... are initialized with a seed of 0.6 M⊕), they demonstrate that if planetary embryos can form, only a small fraction of them will grow fast enough and big enough to eventually become giant planets. Given that we detect gas giants orbiting about 7% of the stars surveyed, Darwin’s harvest of terrestrial ...
... are initialized with a seed of 0.6 M⊕), they demonstrate that if planetary embryos can form, only a small fraction of them will grow fast enough and big enough to eventually become giant planets. Given that we detect gas giants orbiting about 7% of the stars surveyed, Darwin’s harvest of terrestrial ...
Eyles, Bunker, Ellis et al. astro-ph/0607306 Eyles, Bunker, Ellis et al
... After era probed by WMAP the Universe enters the so-called “dark ages” prior to formation of first stars ...
... After era probed by WMAP the Universe enters the so-called “dark ages” prior to formation of first stars ...
The resolved stellar populations of M32 Monachesi, Antonela
... center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of evolutionary models of stars at a fixed age and chemical composition for different ranges of masses, we can qualitatively analyze the CMD. We find from this analysis t ...
... center. We find that this CMD has a wealth of features that reveal the different stellar populations present in M32. With the aid of evolutionary models of stars at a fixed age and chemical composition for different ranges of masses, we can qualitatively analyze the CMD. We find from this analysis t ...
March 2010 - Pomona Valley Amateur Astronomers
... term Club members recalled Bob’s years with our Club and were glad to see him again and of course to learn more about his topic – E.E (Edward Emerson) Barnard. My own knowledge of this man was rudimentary and I was only familiar with an object called Barnard’s Star. After hearing about the rags to r ...
... term Club members recalled Bob’s years with our Club and were glad to see him again and of course to learn more about his topic – E.E (Edward Emerson) Barnard. My own knowledge of this man was rudimentary and I was only familiar with an object called Barnard’s Star. After hearing about the rags to r ...
An introduce of the spectrograph of the GALEX
... The DEEP2 and COMBO-17 surveys are compared to study luminosity functions of red and blue galaxies to z~1. (...) After z~1, M*B has dimmed by 1.2-1.3 mag for all colors of galaxies, φ* for blue galaxies has hardly changed, and φ* for red galaxies has at least doubled (our formal value is ~0.5 dex). ...
... The DEEP2 and COMBO-17 surveys are compared to study luminosity functions of red and blue galaxies to z~1. (...) After z~1, M*B has dimmed by 1.2-1.3 mag for all colors of galaxies, φ* for blue galaxies has hardly changed, and φ* for red galaxies has at least doubled (our formal value is ~0.5 dex). ...
1.2.43The stellar populations of the Milky Way
... stars, which is consistent with star formation in the spheroid ceasing long ago. Because this population is so old, only low-mass stars (which have long lifetimes) still shine as main sequence stars burning hydrogen in their cores. The more massive stars that formed at the same time as the surviving ...
... stars, which is consistent with star formation in the spheroid ceasing long ago. Because this population is so old, only low-mass stars (which have long lifetimes) still shine as main sequence stars burning hydrogen in their cores. The more massive stars that formed at the same time as the surviving ...
AST 111 – Introduction to Astronomy
... phenomena such as eclipses and seasons. 3. Identify the historical contributions of Ptolemy, Copernicus, Tycho, Kepler, Galileo, and Newton, and discuss how astronomy developed from the ancient conceptions of the Greeks to a modern understanding of gravity, tides, and orbital motion. 4. Explain the ...
... phenomena such as eclipses and seasons. 3. Identify the historical contributions of Ptolemy, Copernicus, Tycho, Kepler, Galileo, and Newton, and discuss how astronomy developed from the ancient conceptions of the Greeks to a modern understanding of gravity, tides, and orbital motion. 4. Explain the ...
CS3_Ch 3 - Leon County Schools
... • The sky is divided into 88 constellations. • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as ...
... • The sky is divided into 88 constellations. • Astronomers learn about the energy, distance, temperature, and composition of stars by studying their light. • Astronomers measure distances in space in astrological units and in light-years. They measure star brightness as apparent magnitude and as ...
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.