Open access - ORBi
... disk. The photospheric model is fixed using the estimated limb-darkened diameter from surface-brightness relationships and the linear limb-darkening coefficients of Claret.16 Furthermore, we account for a possible oblateness of the photosphere, based on the measured v sin i, as described in a previous ...
... disk. The photospheric model is fixed using the estimated limb-darkened diameter from surface-brightness relationships and the linear limb-darkening coefficients of Claret.16 Furthermore, we account for a possible oblateness of the photosphere, based on the measured v sin i, as described in a previous ...
Observations of gravitational microlensing events with OSIRIS
... structure of the Milky Way. Moreover, the nature of its parent star would be clarified by determining its mass to the same uncertainty. To our best knowledge only one microlensing event has been observed from two different vantage points already: OGLE-2005-SMC-001. This was done from Earth and Spitz ...
... structure of the Milky Way. Moreover, the nature of its parent star would be clarified by determining its mass to the same uncertainty. To our best knowledge only one microlensing event has been observed from two different vantage points already: OGLE-2005-SMC-001. This was done from Earth and Spitz ...
Document
... Fate of planetary nebulae • Release the envelope into the ISM, on a timescale of ~10000 years. • There are probably about 15,000 in the Milky Way today ISM is being enriched at a rate of about 1 Msun/year. ...
... Fate of planetary nebulae • Release the envelope into the ISM, on a timescale of ~10000 years. • There are probably about 15,000 in the Milky Way today ISM is being enriched at a rate of about 1 Msun/year. ...
Classification and structure of galaxies
... How do we know what our Galaxy looks like? We can see: • Stars and star clusters – microwaves generated by water from H II regions (called the MASER technique) traces the Milky Way’s spiral arms • Nebulae – infrared light (detected by the Spitzer Space Telescope) shows the outline of the heat genera ...
... How do we know what our Galaxy looks like? We can see: • Stars and star clusters – microwaves generated by water from H II regions (called the MASER technique) traces the Milky Way’s spiral arms • Nebulae – infrared light (detected by the Spitzer Space Telescope) shows the outline of the heat genera ...
Reading Quiz 05 - Chapter 10 Quiz Instructions
... A Hertzsprung-Russell (HR) Diagram tells us a lot about stars. One of the answers given below, however, is NOT something that can be inferred either directly or indirectly about the stars placed on an H-R diagram. Which answer is wrong? ...
... A Hertzsprung-Russell (HR) Diagram tells us a lot about stars. One of the answers given below, however, is NOT something that can be inferred either directly or indirectly about the stars placed on an H-R diagram. Which answer is wrong? ...
Document
... the universe with unprecedented clarity and sensitivity. • The picture clearly shows faint structure as small as 30 light-years across in a galaxy tens of millions of light-years away. The Earth and Beyond… GCSE Physics Notes LOJ ...
... the universe with unprecedented clarity and sensitivity. • The picture clearly shows faint structure as small as 30 light-years across in a galaxy tens of millions of light-years away. The Earth and Beyond… GCSE Physics Notes LOJ ...
The Hubble Space Telescope - the first 10 years
... The Universe Today • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new persp ...
... The Universe Today • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new persp ...
Stellar Physics
... introduction of the Properties of stars and the Stellar evolution topics as specified in the Rotational Motion and Astrophysics unit of the new Advanced Higher arrangements for physics. To see where each section corresponds to the Arrangements document, the headings and sub-headings correspond to th ...
... introduction of the Properties of stars and the Stellar evolution topics as specified in the Rotational Motion and Astrophysics unit of the new Advanced Higher arrangements for physics. To see where each section corresponds to the Arrangements document, the headings and sub-headings correspond to th ...
poster
... The YSOVAR project (Morales-Calderon et al. 2011) monitored about a dozen star forming regions in 3.6 m and 4.5m using the warm mission capabilities of Spitzer. The sampling varies with the region, but most star forming regions were observed 50-100 times, on scales of hours to months. Here, we pre ...
... The YSOVAR project (Morales-Calderon et al. 2011) monitored about a dozen star forming regions in 3.6 m and 4.5m using the warm mission capabilities of Spitzer. The sampling varies with the region, but most star forming regions were observed 50-100 times, on scales of hours to months. Here, we pre ...
hubble_refurb
... decision, and would consider sending a shuttle to repair Hubble.[Zimmerman 2] As an engineer, Griffin had previously worked on Hubble's construction, and respected the discoveries the telescope brought to the science community.[Zimmerman 2] He agreed with the National Academy of Sciences that a robo ...
... decision, and would consider sending a shuttle to repair Hubble.[Zimmerman 2] As an engineer, Griffin had previously worked on Hubble's construction, and respected the discoveries the telescope brought to the science community.[Zimmerman 2] He agreed with the National Academy of Sciences that a robo ...
Stellar Physics - Craigie High School
... Observed values for “g”: at poles = 9.832 m s-2 and at equator = 9.780 m s-2 difference is 0.052 m s-2 Most of the difference has been accounted for. The remaining 0.018 m s-2 is due to the nonspherical shape of the Earth. The equatorial radius exceeds the polar radius by 21 km. This flattening at t ...
... Observed values for “g”: at poles = 9.832 m s-2 and at equator = 9.780 m s-2 difference is 0.052 m s-2 Most of the difference has been accounted for. The remaining 0.018 m s-2 is due to the nonspherical shape of the Earth. The equatorial radius exceeds the polar radius by 21 km. This flattening at t ...
Slide 1 - Indiana University Astronomy
... When a neutron star and a black hole orbit each other, the gases sucked off of the neutron star cause what kind of disk around the black hole before disappearing into it? A. Chandrasekhar Disk B. Double Disk C. Funnel Disk D. Accretion Disk ...
... When a neutron star and a black hole orbit each other, the gases sucked off of the neutron star cause what kind of disk around the black hole before disappearing into it? A. Chandrasekhar Disk B. Double Disk C. Funnel Disk D. Accretion Disk ...
Astronomy Part 1 - Malvern Troop 7
... a) Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b) Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c) Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
... a) Identify in the sky at least 10 constellations, at least four of which are in the zodiac. b) Identify at least eight conspicuous stars, five of which are of magnitude 1 or brighter. c) Make two sketches of the Big Dipper. In one sketch, show the Big Dipper's orientation in the early evening sky. ...
The Galaxy–Dark Matter Connection
... Relation between morphology and environment revisited Environment quantified to first order by distinguishing satellite and central galaxies in the group catalogue. Morphological indicator: Concentration (=R90/R50) ...
... Relation between morphology and environment revisited Environment quantified to first order by distinguishing satellite and central galaxies in the group catalogue. Morphological indicator: Concentration (=R90/R50) ...
Anatomy of a Supernova - hrsbstaff.ednet.ns.ca
... These include the vacuum energy from Einstein's original cosmological constant, a new kind of energy called quintessence, and parallel universes called branes. In principle, the history of our universe should tell us which model is right. For now, though, astronomers' best measurements of that histo ...
... These include the vacuum energy from Einstein's original cosmological constant, a new kind of energy called quintessence, and parallel universes called branes. In principle, the history of our universe should tell us which model is right. For now, though, astronomers' best measurements of that histo ...
Exploring The Universe
... because the gravitational pull of nearby galaxies distorts their spiral arms. • Contain mostly YOUNG STARS ...
... because the gravitational pull of nearby galaxies distorts their spiral arms. • Contain mostly YOUNG STARS ...
Introduction
... Despite the enormous release of energy and matter immediately following the Big Bang, there would have been no accompanying blinding flash of light. TRUE It is estimated that it took about 1 million years after the initial Big Bang before the first and simplest conventional atoms (hydrogen and heliu ...
... Despite the enormous release of energy and matter immediately following the Big Bang, there would have been no accompanying blinding flash of light. TRUE It is estimated that it took about 1 million years after the initial Big Bang before the first and simplest conventional atoms (hydrogen and heliu ...
Chapter 26
... 100,000 light-years from one side to the other. The Sun lies about 26,000 lightyears from the galactic center on the edge of one of the spiral arms. The Milky Way’s disk is about 1,000 lightyears thick. ...
... 100,000 light-years from one side to the other. The Sun lies about 26,000 lightyears from the galactic center on the edge of one of the spiral arms. The Milky Way’s disk is about 1,000 lightyears thick. ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.