Former PARI students shine at AAS PARI Calendar
... However, some comets don’t’ return; their orbits are extremely elongated to indicate they originated far beyond the outer planets in a region of space postulated by the late Dutch astronomer Jan Oort to be roughly 1000 times farther away than even the former planet Pluto. These comets have probably ...
... However, some comets don’t’ return; their orbits are extremely elongated to indicate they originated far beyond the outer planets in a region of space postulated by the late Dutch astronomer Jan Oort to be roughly 1000 times farther away than even the former planet Pluto. These comets have probably ...
Gamma Ray Bursts
... • >100 bursts of this object found in old data in 1979-84 • most of them in 1983.11, some in groups, some single Soon, more SGR discovered • all in our Galaxy • all at SN remnants ~10 000 years old • X-ray oscillations found with ~8s period Puzzle solved in 1998 • in 3 years, the period of SGR 1806- ...
... • >100 bursts of this object found in old data in 1979-84 • most of them in 1983.11, some in groups, some single Soon, more SGR discovered • all in our Galaxy • all at SN remnants ~10 000 years old • X-ray oscillations found with ~8s period Puzzle solved in 1998 • in 3 years, the period of SGR 1806- ...
Bonnell_2015_MNRAS_Early - St Andrews Research Repository
... fraction, typically a few per cent, of their gas reservoir to stars before dispersing on time-scales of ∼10 Myr. Most stellar groupings dissolve into the field on a similar time-scale, but several classes of identifiable objects, such as open clusters, OB associations, scaled OB associations and glo ...
... fraction, typically a few per cent, of their gas reservoir to stars before dispersing on time-scales of ∼10 Myr. Most stellar groupings dissolve into the field on a similar time-scale, but several classes of identifiable objects, such as open clusters, OB associations, scaled OB associations and glo ...
Spot sizes on Sun-like stars
... Table 2 indicates that Doppler imaging and photometric lightcurve modelling tend to result in a smaller spot covering fraction than TiO modelling.2 Both photometric light-curve modelling and Doppler imaging are prone to underestimating spot areas. This is mainly because they are not very sensitive t ...
... Table 2 indicates that Doppler imaging and photometric lightcurve modelling tend to result in a smaller spot covering fraction than TiO modelling.2 Both photometric light-curve modelling and Doppler imaging are prone to underestimating spot areas. This is mainly because they are not very sensitive t ...
MPhil Thesis - Final - Suzanne Knight
... tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would prove that it could survive the final stages of stellar evolution and place constraints on the frequency of planetary systems around their progenitors.! Ultra cool brown dw ...
... tracks, but larger mass objects and those further out will survive.! A substellar companion detected around a white dwarf would prove that it could survive the final stages of stellar evolution and place constraints on the frequency of planetary systems around their progenitors.! Ultra cool brown dw ...
MANU-CHAO: A Ground-Layer Adaptive Optics Experiment for the
... ~ linear with Strehl-ratio 0.0 LINC-NIRVANA • overall performance is product of individual high-spatial frequency information ...
... ~ linear with Strehl-ratio 0.0 LINC-NIRVANA • overall performance is product of individual high-spatial frequency information ...
JRASC, June 2014 Issue (PDF, low resolution)
... The Journal is a bi-monthly publication of The Royal Astronomical Society of Canada and is devoted to the advancement of astronomy and allied sciences. It contains articles on Canadian astronomers and current activities of the RASC and its Centres, research and review papers by professional and ama ...
... The Journal is a bi-monthly publication of The Royal Astronomical Society of Canada and is devoted to the advancement of astronomy and allied sciences. It contains articles on Canadian astronomers and current activities of the RASC and its Centres, research and review papers by professional and ama ...
A Starscape in Red and Blue - Royal Astronomical Society of Canada
... The Journal is a bi-monthly publication of The Royal Astronomical Society of Canada and is devoted to the advancement of astronomy and allied sciences. It contains articles on Canadian astronomers and current activities of the RASC and its Centres, research and review papers by professional and ama ...
... The Journal is a bi-monthly publication of The Royal Astronomical Society of Canada and is devoted to the advancement of astronomy and allied sciences. It contains articles on Canadian astronomers and current activities of the RASC and its Centres, research and review papers by professional and ama ...
EROs and submm galaxies: Expectations for FMOS in the
... One night (11 June 2001), hampered by poor seeing and the telescope oscillation problem. ...
... One night (11 June 2001), hampered by poor seeing and the telescope oscillation problem. ...
Discovery of a Dusty Ring in the Coalsack - Harvard
... tions to thousands of stars behind the cloud. These measurements enable an examination of the structure of the globule to be made in a degree of detail considerably greater than that obtained by previous studies and comparable to that acheived earlier for B 68. The high angular resolution achieved b ...
... tions to thousands of stars behind the cloud. These measurements enable an examination of the structure of the globule to be made in a degree of detail considerably greater than that obtained by previous studies and comparable to that acheived earlier for B 68. The high angular resolution achieved b ...
SPIRou Science Case
... SPIRou plans to concentrate on two main scientific goals. The first one is to search for & characterize habitable exo-Earths orbiting low-mass & very-low mass stars (LMSs & vLMSs) using high-precision radial velocity (RV) measurements. This search will expand the initial, exploratory studies carried ...
... SPIRou plans to concentrate on two main scientific goals. The first one is to search for & characterize habitable exo-Earths orbiting low-mass & very-low mass stars (LMSs & vLMSs) using high-precision radial velocity (RV) measurements. This search will expand the initial, exploratory studies carried ...
Event Booklet - Exoplanets I Conference
... K2’s lifetime (~18 campaigns or ~4 years), K2 will discover a significant number of transiting exoplanets, extending the legacy of the Kepler mission. Indeed, K2 has already discovered ~50 exoplanets with a couple hundred more candidates awaiting confirmation, just from the first few campaigns alone ...
... K2’s lifetime (~18 campaigns or ~4 years), K2 will discover a significant number of transiting exoplanets, extending the legacy of the Kepler mission. Indeed, K2 has already discovered ~50 exoplanets with a couple hundred more candidates awaiting confirmation, just from the first few campaigns alone ...
Slide 1
... So let’s pause here for a second. Neutron stars are very weird because they’re essentially a super-giant atomic nucleus. First, a teaspoon of material from one can weigh up to a billion tons. (A large mountain) Second, an entire neutron star would be smaller than the Denver metro area. (3 times the ...
... So let’s pause here for a second. Neutron stars are very weird because they’re essentially a super-giant atomic nucleus. First, a teaspoon of material from one can weigh up to a billion tons. (A large mountain) Second, an entire neutron star would be smaller than the Denver metro area. (3 times the ...
1 The Hubble Story (10:56)
... Hubble’s extremely high resolution and sensitivity have made unique observations of objects within the Solar System possible, obtaining amazing images and rich streams of data about the nature of these bodies. Hubble has seen unprecedented detail in Jupiter’s aurorae, which are similar to those seen ...
... Hubble’s extremely high resolution and sensitivity have made unique observations of objects within the Solar System possible, obtaining amazing images and rich streams of data about the nature of these bodies. Hubble has seen unprecedented detail in Jupiter’s aurorae, which are similar to those seen ...
JENAM-2011 Book of abstracts
... ESA’s Hipparcos astrometry mission was a particularly innovative project in space astronomy. The satellite was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in term ...
... ESA’s Hipparcos astrometry mission was a particularly innovative project in space astronomy. The satellite was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in term ...
Astronomy 113 Laboratory Manual - UW
... genitive form of its constellation name. The brightest one gets Alpha, the next brightest gets Beta, then Gamma, Delta, Epsilon, and so on. For example, Polaris is Alpha Ursae Minoris. The brightest star in the sky is Sirius, the Dog Star, which is also known as Alpha Canis Majoris. (The constellati ...
... genitive form of its constellation name. The brightest one gets Alpha, the next brightest gets Beta, then Gamma, Delta, Epsilon, and so on. For example, Polaris is Alpha Ursae Minoris. The brightest star in the sky is Sirius, the Dog Star, which is also known as Alpha Canis Majoris. (The constellati ...
Gravitational Bending of Light and Its Measurement with
... Sun. The line of sight of the two astrometric instruments are separated by the 'basic angle', which is 106.5 degrees. During its operational lifetime, Gaia will continuously scan the sky, roughly along great circles, according to a carefully selected pre-defined scanning law. The characteristics of ...
... Sun. The line of sight of the two astrometric instruments are separated by the 'basic angle', which is 106.5 degrees. During its operational lifetime, Gaia will continuously scan the sky, roughly along great circles, according to a carefully selected pre-defined scanning law. The characteristics of ...
The Extragalactic Group of MPE and USM
... • Advantage of photo z: no color selection bias, fainter luminosities, larger sample (~10000 galaxies in FDF and GOODS S sub-sample) • FORS Deep Field (IAB=26.8): 98% of all galaxies with dz/(1+z)<0.03; GOODS S (KAB=25.4): dz/(1+z)<0.055 • Deep I-selection misses only a small fraction of deep K sele ...
... • Advantage of photo z: no color selection bias, fainter luminosities, larger sample (~10000 galaxies in FDF and GOODS S sub-sample) • FORS Deep Field (IAB=26.8): 98% of all galaxies with dz/(1+z)<0.03; GOODS S (KAB=25.4): dz/(1+z)<0.055 • Deep I-selection misses only a small fraction of deep K sele ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.