WORD - Astrophysics
... A European ELT as envisaged is a critical component of a multi-faceted approach to understanding our Universe. GAIA will provide an astrometric capability that is impossible from the ground, supplying proper motions and distances. An ELT complements and thus strengthens the capabilities of ALMA, whi ...
... A European ELT as envisaged is a critical component of a multi-faceted approach to understanding our Universe. GAIA will provide an astrometric capability that is impossible from the ground, supplying proper motions and distances. An ELT complements and thus strengthens the capabilities of ALMA, whi ...
HWWS 2010 - Monash University
... • Latter two are both likely classes of magnetars, (possibly young) systems with extremely high magnetic fields 1014– 1015 G • Compact central objects (CCOs) about which very little is known, associated with supernova remnants Galloway, “Accreting Neutron Stars – tiny Galactic Powerhouses” ...
... • Latter two are both likely classes of magnetars, (possibly young) systems with extremely high magnetic fields 1014– 1015 G • Compact central objects (CCOs) about which very little is known, associated with supernova remnants Galloway, “Accreting Neutron Stars – tiny Galactic Powerhouses” ...
Observations of V838 Mon light echo
... Nevertheless, they are cluster members, and associated with a dust cloud. The exploded star was located 0.97 mag below, and its companion B3V engulfed in 2008 by the explosion remnant was 1.32 mag below in the V band. With the generally accepted distance and reddening, the exploded star is located p ...
... Nevertheless, they are cluster members, and associated with a dust cloud. The exploded star was located 0.97 mag below, and its companion B3V engulfed in 2008 by the explosion remnant was 1.32 mag below in the V band. With the generally accepted distance and reddening, the exploded star is located p ...
Stars 3
... Nebula. These include wisp-like structures that move outward away from the pulsar at half the speed of light, as well as a mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the p ...
... Nebula. These include wisp-like structures that move outward away from the pulsar at half the speed of light, as well as a mysterious “halo” which remains stationary, but grows brighter then fainter over time. Also seen are the effects of two polar jets that move out along the rotation axis of the p ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
... shown in Figs 3, 7 and 8. While overall, the innards of Crater appear resolved in the ACAM images, the resulting photometry does suffer from blending problems to some extent. Therefore, in the following analysis we use two versions of the WHT stellar catalogues. First, the most stringent sample (sam ...
Title: Binary interaction dominates the evolution of massive stars
... pairs (π = -0.55 ± 0.2) and a uniform distribution of the mass ratio (κ = -0.1 ± 0.6) for binaries with periods up to about nine years. Comparison of the intrinsic, simulated and observed cumulative distributions of the orbital parameters shows that observational biases are mostly restricted to the ...
... pairs (π = -0.55 ± 0.2) and a uniform distribution of the mass ratio (κ = -0.1 ± 0.6) for binaries with periods up to about nine years. Comparison of the intrinsic, simulated and observed cumulative distributions of the orbital parameters shows that observational biases are mostly restricted to the ...
SGHS Faulkes ASISTM Star Cluster Photometry
... Note: It is very important that you match the B and V values for each star in each image. The B value you measured for star 1 must be recorded with the V value for that same star. The spreadsheet I have made you makes this a bit easier but using the images in this document to write down which star i ...
... Note: It is very important that you match the B and V values for each star in each image. The B value you measured for star 1 must be recorded with the V value for that same star. The spreadsheet I have made you makes this a bit easier but using the images in this document to write down which star i ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... The big mystery long puzzling astrophysicists is: how did supermassive black holes form? The ones that exist at the centers of some very ancient galaxies that shine brightly as quasars formed when the universe was less than 800 million years old. But no ordinary-sized stellar-mass black holes could ...
... The big mystery long puzzling astrophysicists is: how did supermassive black holes form? The ones that exist at the centers of some very ancient galaxies that shine brightly as quasars formed when the universe was less than 800 million years old. But no ordinary-sized stellar-mass black holes could ...
Powerpoint Presentation (large file)
... neutron stars produce novae and bursters • Material from an ordinary star in a close binary can fall onto the surface of the companion white dwarf or neutron star to produce a surface layer in which thermonuclear reactions can explosively ignite • Explosive hydrogen fusion may occur in the surface l ...
... neutron stars produce novae and bursters • Material from an ordinary star in a close binary can fall onto the surface of the companion white dwarf or neutron star to produce a surface layer in which thermonuclear reactions can explosively ignite • Explosive hydrogen fusion may occur in the surface l ...
Next Generation Sunshine State Standards Chapter 24
... The major tool introduces and builds science concepts as a coherent whole. It provides opportunities to students to explore why a scientific idea is important and in which contexts that a science idea can be useful. In other words, the major tool helps students learn the science concepts in depth. A ...
... The major tool introduces and builds science concepts as a coherent whole. It provides opportunities to students to explore why a scientific idea is important and in which contexts that a science idea can be useful. In other words, the major tool helps students learn the science concepts in depth. A ...
Astronomy Astrophysics
... that of WD 1845+019 (see Fig. 2 of Maxted & Marsh 1999). In this case the emission is due to a cool companion star in a long orbit around the white dwarf. This scenario could also be valid for WD 0518+333 and might explain why different methods of analysis give such disparate results. The low gravity ...
... that of WD 1845+019 (see Fig. 2 of Maxted & Marsh 1999). In this case the emission is due to a cool companion star in a long orbit around the white dwarf. This scenario could also be valid for WD 0518+333 and might explain why different methods of analysis give such disparate results. The low gravity ...
Notes for Class 7, March 2
... of all of the topics and activities (“laundry list”), and does not ask for an evaluation of me or the course (that’s for SET) or you. • The topic asks for “a” core concept and suggests a starting point for your analysis • Due 4/20. Note that we have not covered all of the core topics yet. • Review S ...
... of all of the topics and activities (“laundry list”), and does not ask for an evaluation of me or the course (that’s for SET) or you. • The topic asks for “a” core concept and suggests a starting point for your analysis • Due 4/20. Note that we have not covered all of the core topics yet. • Review S ...
Lesson 3: Calculating distances to stars
... from a given parallax angle or vice versa. The distances to stars can’t always be calculated from the parallax method. If the star is very far away, then the brightness of the star can be used to estimate the distance to the star. It is a rather simple principle; if a star is close by then it will a ...
... from a given parallax angle or vice versa. The distances to stars can’t always be calculated from the parallax method. If the star is very far away, then the brightness of the star can be used to estimate the distance to the star. It is a rather simple principle; if a star is close by then it will a ...
A Universe of Galaxies - Pennsylvania State University
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
... What can outshine ~1000 supernovae for millions of years, and be just slightly larger than our Solar System? Theoretically, not much – only a very, very big black hole. • Start with a black hole with a mass of 10,000,000,000 Mʘ • Have a star come close enough to be tidally disrupted • Have the mater ...
Star Clusters in Mergers
... which is ~ 30 % closer than our previous estimate (we believe unlikely since peculiar velocity would have to be ~ 500 km/s). ...
... which is ~ 30 % closer than our previous estimate (we believe unlikely since peculiar velocity would have to be ~ 500 km/s). ...
Nuclear Synthesis
... • Very small radius with mass >3x Mass(Sun) (and can be much, much more massive) • So much gravitational force that not even light can escape --- escape velocity is greater than the speed of light • Escape velocity = sqrt(2gR) =sqrt(2GM)/R ...
... • Very small radius with mass >3x Mass(Sun) (and can be much, much more massive) • So much gravitational force that not even light can escape --- escape velocity is greater than the speed of light • Escape velocity = sqrt(2gR) =sqrt(2GM)/R ...
Absolute Magnitudes of Supernovae
... Summary Using the Hubble Law, determine the absolute magnitudes of Type Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear sudde ...
... Summary Using the Hubble Law, determine the absolute magnitudes of Type Ia supernovae occurring in distant galaxies. Background - During a three-week period in 1997, the Hubble Space Telescope was used to observe a supernova - an exploding star in a distant galaxy. These exploding stars appear sudde ...
September 2011 - Newbury Astronomical Society
... M15 shown at the bottom centre of the chart is a very nice Globular Cluster. This stunning ball of about 100,000 stars is visible in a pair of 10 x 50 binoculars as a small fuzzy patch of light. A small telescope will show it as a ball of stars but a larger telescope will reveal its true glory and e ...
... M15 shown at the bottom centre of the chart is a very nice Globular Cluster. This stunning ball of about 100,000 stars is visible in a pair of 10 x 50 binoculars as a small fuzzy patch of light. A small telescope will show it as a ball of stars but a larger telescope will reveal its true glory and e ...
White Dwarfs - University of Maryland Astronomy
... very small space. As a white dwarf’s mass approaches 1.4 MSun, its ...
... very small space. As a white dwarf’s mass approaches 1.4 MSun, its ...
Stellar Continua
... • Slope is negative (blue is brighter) for hot stars and positive (visual is brighter) for cooler stars • B-V works as a temperature indicator from 3500K to 9000K (but depends on metallicity) • For hotter stars, neutral H and H- opacities diminish, continuum slope dominated by Planck function, and t ...
... • Slope is negative (blue is brighter) for hot stars and positive (visual is brighter) for cooler stars • B-V works as a temperature indicator from 3500K to 9000K (but depends on metallicity) • For hotter stars, neutral H and H- opacities diminish, continuum slope dominated by Planck function, and t ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.