AR2012 - Vatican Observatory
... from Star Cluster Ecology to Tracers of Galaxy Evolution. In 1985, the late Fr. Martin McCarthy S.J., an astronomer at the Observatory, recognized that there was too little contact between the astronomers at the Observatory and younger researchers. His solution was to open the observatory to student ...
... from Star Cluster Ecology to Tracers of Galaxy Evolution. In 1985, the late Fr. Martin McCarthy S.J., an astronomer at the Observatory, recognized that there was too little contact between the astronomers at the Observatory and younger researchers. His solution was to open the observatory to student ...
TWO NEW LONG-PERIOD GIANT PLANETS FROM THE
... heavily biased toward massive planets in short-period orbits, the majority of these are gas giants in orbits of less than one Earthyear. Only about 25 RV-detected planets can be considered “Jupiter analogs,” which we define as within a factor of a few Jupitermasses and in orbits longer than 8 yr(a ...
... heavily biased toward massive planets in short-period orbits, the majority of these are gas giants in orbits of less than one Earthyear. Only about 25 RV-detected planets can be considered “Jupiter analogs,” which we define as within a factor of a few Jupitermasses and in orbits longer than 8 yr(a ...
cassini, rømer and the velocity of light
... The minutes of the Académie Royale des Sciences are incomplete for the year of the discovery, between 18 July and 14 November 1676. The missing content can however be reconstructed, thanks to indirect sources that cite or copy it. Jean-Baptiste Du Hamel (1624–1706), Secretary of the Academy from its ...
... The minutes of the Académie Royale des Sciences are incomplete for the year of the discovery, between 18 July and 14 November 1676. The missing content can however be reconstructed, thanks to indirect sources that cite or copy it. Jean-Baptiste Du Hamel (1624–1706), Secretary of the Academy from its ...
WAS THE SUN BORN IN A MASSIVE CLUSTER?
... Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA Received 2011 November 4; accepted 2012 May 3; published 2012 July 5 ...
... Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA Received 2011 November 4; accepted 2012 May 3; published 2012 July 5 ...
Planet Hunters Education Guide
... the unusual, unlike computers, which will only identify exactly what they have been asked to. This can lead to unexpected discoveries, like in the case of the Galaxy Zoo ‘Green Peas.’ Volunteers were able to identify an entirely new type of galaxy that astronomers didn’t know existed. This galaxy lo ...
... the unusual, unlike computers, which will only identify exactly what they have been asked to. This can lead to unexpected discoveries, like in the case of the Galaxy Zoo ‘Green Peas.’ Volunteers were able to identify an entirely new type of galaxy that astronomers didn’t know existed. This galaxy lo ...
Spin-driven tidal pumping: Tidally driven changes in planetary spin
... phase lag can drive the pumping. These results were surprising, both because tides are generally expected to damp eccentricities and because of the large magnitude of the computed pumping effect. Here we demonstrate that similar results can be obtained with an analytical solution based on lower-orde ...
... phase lag can drive the pumping. These results were surprising, both because tides are generally expected to damp eccentricities and because of the large magnitude of the computed pumping effect. Here we demonstrate that similar results can be obtained with an analytical solution based on lower-orde ...
Galileo`s telescope - Exhibits on-line
... telescope makers. The little telescope examined by Giovambattista della Porta (c. 1535-1615) in Naples in the summer of 1609 had, for example, a tube made of tin. To build his first telescope, Galileo (1564-1642) used instead a lead tube, while that of the instrument he presented to the Venetian gov ...
... telescope makers. The little telescope examined by Giovambattista della Porta (c. 1535-1615) in Naples in the summer of 1609 had, for example, a tube made of tin. To build his first telescope, Galileo (1564-1642) used instead a lead tube, while that of the instrument he presented to the Venetian gov ...
Beyond Pluto: Exploring the outer limits of the solar - e
... be discovered. He called this distant object ‘Planet X’ and, like Pickering, he tried to calculate where in the sky it might be found. However, Lowell had an advantage over his rival, for he had the means to pursue his search without relying on the whims of others. Lowell owned a private observatory ...
... be discovered. He called this distant object ‘Planet X’ and, like Pickering, he tried to calculate where in the sky it might be found. However, Lowell had an advantage over his rival, for he had the means to pursue his search without relying on the whims of others. Lowell owned a private observatory ...
Search for an exosphere around 51 Pegasi B with ISO
... 1. Introduction The discovery of planets in solar systems other than our own (inferred from periodic radial velocity variations (Mayor & Queloz 1995; Marcy & Butler 1995, 1998)) is certainly one of the major astronomical results of the decade. However, the faint planets have eluded direct detection ...
... 1. Introduction The discovery of planets in solar systems other than our own (inferred from periodic radial velocity variations (Mayor & Queloz 1995; Marcy & Butler 1995, 1998)) is certainly one of the major astronomical results of the decade. However, the faint planets have eluded direct detection ...
A new algorithm for fitting orbits of multiple
... J K 2 M 2 Astrometric signature (in uas) and inclination (in radians) are then estimated as ...
... J K 2 M 2 Astrometric signature (in uas) and inclination (in radians) are then estimated as ...
November, 2015 - The Baton Rouge Astronomical Society
... 847 and counting: that’s the number of planets confirmed as existing around 642 stars within several hundred light-years of our Sun. And more than 2,000 additional detections are awaiting confirmation by follow-up observations. By far, the most potential exoplanets have been found by the NASA spacec ...
... 847 and counting: that’s the number of planets confirmed as existing around 642 stars within several hundred light-years of our Sun. And more than 2,000 additional detections are awaiting confirmation by follow-up observations. By far, the most potential exoplanets have been found by the NASA spacec ...
A Detailed Derivation of the Radial Velocity Equation
... I would like to thank my adviser, Debra Fischer, for suggesting this derivation as one of my first introductions to extrasolar planet research. The entire process has helped me immensely to not only understand the delicate intricacies of the radial velocity method, but also to be able to see the b ...
... I would like to thank my adviser, Debra Fischer, for suggesting this derivation as one of my first introductions to extrasolar planet research. The entire process has helped me immensely to not only understand the delicate intricacies of the radial velocity method, but also to be able to see the b ...
Three newly discovered sub-Jupiter-mass planets: WASP
... The WASP data were processed and searched for transit signals as described in Collier Cameron et al. (2006), and the candidate selection process was performed as described in Collier Cameron et al. (2007). We perform a search for transits on each season of data from each camera separately and we per ...
... The WASP data were processed and searched for transit signals as described in Collier Cameron et al. (2006), and the candidate selection process was performed as described in Collier Cameron et al. (2007). We perform a search for transits on each season of data from each camera separately and we per ...
Howard 2013 Observed properties of exoplanets
... uncertain at the 50% level near 1 Earth blocked fraction of the stellar disk. The stellar obliquity can be mea- systems provide additional dynamical inmass. The size distribution is character- sured during transit by anomalous Doppler shifts (the Rossiter- formation. These ratios are largely random ...
... uncertain at the 50% level near 1 Earth blocked fraction of the stellar disk. The stellar obliquity can be mea- systems provide additional dynamical inmass. The size distribution is character- sured during transit by anomalous Doppler shifts (the Rossiter- formation. These ratios are largely random ...
Constraining tidal dissipation in F-type main
... some of these systems. According to the dynamical tide theory by Ogilvie & Lin (2007), the stars experiencing the strongest tidal interaction are those with n/Ω = Prot /Porb ≤ 2 because they have |ω̂|/Ω ≤ 2 when the l = m = 2 component of the tidal potential is considered (Barker & Ogilvie 2009). Fo ...
... some of these systems. According to the dynamical tide theory by Ogilvie & Lin (2007), the stars experiencing the strongest tidal interaction are those with n/Ω = Prot /Porb ≤ 2 because they have |ω̂|/Ω ≤ 2 when the l = m = 2 component of the tidal potential is considered (Barker & Ogilvie 2009). Fo ...
PLUTO - science1d
... Although Charon is small, about 1,172 km (728 miles) in diameter, it about half of the size of Pluto itself. Charon orbits about 19,640 km from Pluto on average. It may be covered by water ice and probably has no atmosphere. Charon is in a synchronous orbit around Pluto. That is, Charon is always ov ...
... Although Charon is small, about 1,172 km (728 miles) in diameter, it about half of the size of Pluto itself. Charon orbits about 19,640 km from Pluto on average. It may be covered by water ice and probably has no atmosphere. Charon is in a synchronous orbit around Pluto. That is, Charon is always ov ...
Mean-Motion Resonances as a Source for Infalling Comets toward
... observed events in many of their characteristic details (Beust et al. 1990; Beust et al. 1995, and Refs. therein). Moreover, some very specific features related to the observed events, such as unusual line ratios or the unexpected presence of overionized species like Al III or C IV, appear to be a n ...
... observed events in many of their characteristic details (Beust et al. 1990; Beust et al. 1995, and Refs. therein). Moreover, some very specific features related to the observed events, such as unusual line ratios or the unexpected presence of overionized species like Al III or C IV, appear to be a n ...
JRASC, June 2014 Issue (PDF, low resolution)
... 1 million to 10 million times fainter than their host stars. The first observations in November 2013 targeted previously known planetary systems—the four-planet HR8799 system (co-discovered by an LLNL-led team at the Gemini and Keck Observatory in 2008) and the Beta Pictoris system, among others. GP ...
... 1 million to 10 million times fainter than their host stars. The first observations in November 2013 targeted previously known planetary systems—the four-planet HR8799 system (co-discovered by an LLNL-led team at the Gemini and Keck Observatory in 2008) and the Beta Pictoris system, among others. GP ...
A Starscape in Red and Blue - Royal Astronomical Society of Canada
... 1 million to 10 million times fainter than their host stars. The first observations in November 2013 targeted previously known planetary systems—the four-planet HR8799 system (co-discovered by an LLNL-led team at the Gemini and Keck Observatory in 2008) and the Beta Pictoris system, among others. GP ...
... 1 million to 10 million times fainter than their host stars. The first observations in November 2013 targeted previously known planetary systems—the four-planet HR8799 system (co-discovered by an LLNL-led team at the Gemini and Keck Observatory in 2008) and the Beta Pictoris system, among others. GP ...
2. Galileo Magnifico
... (just as the Moon does), and four star-like points (now known as the Galilean moons) were obviously in orbit around the planet Jupiter. None of these facts could be explained using the old geocentric Ptolemaic system. It’s worth taking a more detailed look at Galileo’s telescopic observations and di ...
... (just as the Moon does), and four star-like points (now known as the Galilean moons) were obviously in orbit around the planet Jupiter. None of these facts could be explained using the old geocentric Ptolemaic system. It’s worth taking a more detailed look at Galileo’s telescopic observations and di ...
DIO 15 - DIO, The International Journal of Scientific History
... surveys, although few people actually used it for that purpose. I recovered lost asteroids and comets, and found new ones. In 1974 I discovered the 13th satellite of Jupiter, (Leda), and another one the following year. Encouraged by these successes, I started a full-scale survey of the ecliptic regi ...
... surveys, although few people actually used it for that purpose. I recovered lost asteroids and comets, and found new ones. In 1974 I discovered the 13th satellite of Jupiter, (Leda), and another one the following year. Encouraged by these successes, I started a full-scale survey of the ecliptic regi ...
DIO vol. 15 - DIO, The International Journal of Scientific History
... Summaries of around 440 letters concerning the discovery of the planet Neptune in 1846 are going into a database on the DIO website. These come mainly from the British libraries in Cambridge and London, and also Paris and a few from Washington. The discovery of Neptune was a huge international drama ...
... Summaries of around 440 letters concerning the discovery of the planet Neptune in 1846 are going into a database on the DIO website. These come mainly from the British libraries in Cambridge and London, and also Paris and a few from Washington. The discovery of Neptune was a huge international drama ...
10. Atmospheres of Planets and of Exoplanets - ETH E
... gases, namely Sulfurdioxide (H2SO4): 150 ppm), Argon (Ar: 70 ppm), Water (H2O: 20 pp), Carbonmonoxide (CO: 17 ppm); Helium (He: 12 ppm), and Neon (Ne: 7 ppm) (s. right-hand Figure). Because of the large total amount of mass, it contains about five times as much Nitroge as in the Earth’s Atmosphere a ...
... gases, namely Sulfurdioxide (H2SO4): 150 ppm), Argon (Ar: 70 ppm), Water (H2O: 20 pp), Carbonmonoxide (CO: 17 ppm); Helium (He: 12 ppm), and Neon (Ne: 7 ppm) (s. right-hand Figure). Because of the large total amount of mass, it contains about five times as much Nitroge as in the Earth’s Atmosphere a ...
How we think the planets were born
... The Geminids can be annually observed in the first half of December, with its peak activity being around December 14. The shower owes its name to the constellation Gemini from where the meteors appear to emerge from in the sky (the so-called “radiant”). Unlike most other meteor showers, the Geminids ...
... The Geminids can be annually observed in the first half of December, with its peak activity being around December 14. The shower owes its name to the constellation Gemini from where the meteors appear to emerge from in the sky (the so-called “radiant”). Unlike most other meteor showers, the Geminids ...
Article PDF - IOPscience
... planets, although these scenarios have never been quantitatively simulated. In this section we investigate the effects that an eccentric Neptune would have on the formation of the scattered disk. Our numerical experiment is very simple. We have performed a series of 1 Gyr integrations of the evoluti ...
... planets, although these scenarios have never been quantitatively simulated. In this section we investigate the effects that an eccentric Neptune would have on the formation of the scattered disk. Our numerical experiment is very simple. We have performed a series of 1 Gyr integrations of the evoluti ...
Discovery of Neptune
The planet Neptune was mathematically predicted before it was directly observed. With a prediction by Urbain Le Verrier, telescopic observations confirming the existence of a major planet were made on the night of September 23–24, 1846, at the Berlin Observatory, by astronomer Johann Gottfried Galle (assisted by Heinrich Louis d'Arrest), working from Le Verrier's calculations. It was a sensational moment of 19th century science and dramatic confirmation of Newtonian gravitational theory. In François Arago's apt phrase, Le Verrier had discovered a planet ""with the point of his pen"".In retrospect, after it was discovered it turned out it had been observed many times before but not recognized, and there were others who made various calculations about its location, which did not lead to its observation. By 1847 the planet Uranus had completed nearly one full orbit since its discovery by William Herschel in 1781, and astronomers had detected a series of irregularities in its path that could not be entirely explained by Newton's law of gravitation. These irregularities could, however, be resolved if the gravity of a farther, unknown planet were disturbing its path around the Sun. In 1845 astronomers Urbain Le Verrier in Paris and John Couch Adams in Cambridge separately began calculations to determine the nature and position of such a planet. Le Verrier's success also led to a tense international dispute over priority, because shortly after the discovery George Airy, at the time British Astronomer Royal, announced that Adams had also predicted the discovery of the planet. Nevertheless, the Royal Society awarded Le Verrier the Copley medal in 1846 for his achievement, without mention of Adams.The discovery of Neptune led to the discovery of its moon Triton by William Lassell just seventeen days later.