30 Doradus - HubbleSOURCE
... Why should we care? Because most of the stars in the Universe were formed in those dots between 8 and 12 billion years ago (roughly between redshift 1.5 and 3). ...
... Why should we care? Because most of the stars in the Universe were formed in those dots between 8 and 12 billion years ago (roughly between redshift 1.5 and 3). ...
Candidate star clusters toward the inner Milky Way discovered on
... The final list of identified cluster candidates contains nine objects. Their locations on the sky are shown in Fig. 4 and there appears to be some clustering: VVV CC 169 and VVV CC 170 have projected on-sky separation of ∼2 arcmin, but these objects have different extinctions and distances (Table 1) ...
... The final list of identified cluster candidates contains nine objects. Their locations on the sky are shown in Fig. 4 and there appears to be some clustering: VVV CC 169 and VVV CC 170 have projected on-sky separation of ∼2 arcmin, but these objects have different extinctions and distances (Table 1) ...
RASC Bulletin June 1996 - Royal Astronomical Society of Canada
... always a bad speller! The more important in sight was that one can do amazing things with ...
... always a bad speller! The more important in sight was that one can do amazing things with ...
The Milky Way and Its Neighbors
... in spiral arms is very bright in UV Young stars emit towards UV Several types shown below ...
... in spiral arms is very bright in UV Young stars emit towards UV Several types shown below ...
Moitinho et al. - Wiley Online Library
... overdensity would be the remaining core of the disrupted galaxy and the ring would be the tidal debris left behind. However, unlike the Sagittarius dwarf, which is well below the Galactic plane and whose orbit, and thus tidal tail, is nearly perpendicular to the plane of the Milky Way, the putative ...
... overdensity would be the remaining core of the disrupted galaxy and the ring would be the tidal debris left behind. However, unlike the Sagittarius dwarf, which is well below the Galactic plane and whose orbit, and thus tidal tail, is nearly perpendicular to the plane of the Milky Way, the putative ...
Scorpius: The Scorpion Σκορπιος Amber Perrine Physics 1040 MWF
... visual magnitude of 4.2 and its angular diameter is 25 arc-minutes. Messier 6 lies approximately 1,600 light years away. The brightest star in the cluster is BM Scorpii that is located on the edge of the butterfly’s left wing. It is an orange supergiant, while most of the other bright members are ho ...
... visual magnitude of 4.2 and its angular diameter is 25 arc-minutes. Messier 6 lies approximately 1,600 light years away. The brightest star in the cluster is BM Scorpii that is located on the edge of the butterfly’s left wing. It is an orange supergiant, while most of the other bright members are ho ...
PPT 15MB - HubbleSOURCE
... Amazing network of long, straight filaments seen in great detail for first time in ionized gas; some of them follow magnetic field lines; New compact nebulae discovered with young massive stars, ranging from early to late stages of star formation Many candidate massive stars identified by brig ...
... Amazing network of long, straight filaments seen in great detail for first time in ionized gas; some of them follow magnetic field lines; New compact nebulae discovered with young massive stars, ranging from early to late stages of star formation Many candidate massive stars identified by brig ...
UNIVERSITY OF BRISTOL
... SECTION A contains 5 questions and carries 50% of the marks for the paper. SECTION B contains 3 questions and carries 50% of the marks for the paper. Answer ALL questions from SECTION A and TWO questions from SECTION B. There are 8 questions on this paper. PLEASE NOTE that, where a candidate has att ...
... SECTION A contains 5 questions and carries 50% of the marks for the paper. SECTION B contains 3 questions and carries 50% of the marks for the paper. Answer ALL questions from SECTION A and TWO questions from SECTION B. There are 8 questions on this paper. PLEASE NOTE that, where a candidate has att ...
Stars, Galaxies, and the Universe Section 3 Stars, Galaxies, and the
... Stars, Galaxies, and the Universe ...
... Stars, Galaxies, and the Universe ...
Evolved Stellar Populations
... stars allows to estimate variations in meanage and metallicity across stellar populations. Modest but complete samples produce ...
... stars allows to estimate variations in meanage and metallicity across stellar populations. Modest but complete samples produce ...
Our Galaxy -- The Milky Way PowerPoint
... – Constructive interference prone to extensive star formation – Destructive interference prone to minimal star formation ...
... – Constructive interference prone to extensive star formation – Destructive interference prone to minimal star formation ...
PowerPoint
... a) Clouds fragment into smaller objects, forming many stars at one time. b) One star forms; other matter goes into planets, moons, asteroids, & comets. c) Clouds rotate & throw off mass until only enough is left to form one star. ...
... a) Clouds fragment into smaller objects, forming many stars at one time. b) One star forms; other matter goes into planets, moons, asteroids, & comets. c) Clouds rotate & throw off mass until only enough is left to form one star. ...
81 KB - CSIRO Publishing
... Milky Way ‘dwarf spheroidal galaxies’ and ‘dwarf elliptical galaxies’ are not galaxies. Hosts a Satellite Stellar System Evidence that a galaxy dominates its environment could come from the presence of smaller satellite stellar systems, such as dwarf galaxies (for large galaxies) or globular clust ...
... Milky Way ‘dwarf spheroidal galaxies’ and ‘dwarf elliptical galaxies’ are not galaxies. Hosts a Satellite Stellar System Evidence that a galaxy dominates its environment could come from the presence of smaller satellite stellar systems, such as dwarf galaxies (for large galaxies) or globular clust ...
Stellar Nebulae
... galaxies, reaching up to 300 light years in diameter. They contain enough dense gas and dust to form hundreds of thousands of Sun-like stars. These stars are formed in the densest parts of the clouds. Molecular clouds are very cold, having temperatures ranging from about -440 to -370 degrees Fahrenh ...
... galaxies, reaching up to 300 light years in diameter. They contain enough dense gas and dust to form hundreds of thousands of Sun-like stars. These stars are formed in the densest parts of the clouds. Molecular clouds are very cold, having temperatures ranging from about -440 to -370 degrees Fahrenh ...
Homework #7 (Ch. 19)
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
... 9. Chaisson Review and Discussion 19.17 What do star clusters and associations have to do with star formation? 10. Chaisson Review and Discussion 19.18 Compare and contrast the observed properties of open star clusters and globular star clusters. 11. Chaisson Review and Discussion 19.19 How can we ...
Measuring the Milky Way
... These objects are very close to the Galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 million solar masses. ...
... These objects are very close to the Galactic center. The orbit on the right is the best fit; it assumes a central black hole of 3.7 million solar masses. ...
Stellar Evolution
... Star clusters come in 2 types: Globular clusters Can contain a million stars in a region ~100 light years across In our galaxy, globular clusters are all old, whereas new open clusters are being formed now ...
... Star clusters come in 2 types: Globular clusters Can contain a million stars in a region ~100 light years across In our galaxy, globular clusters are all old, whereas new open clusters are being formed now ...
Society News - Bristol Astronomical Society
... lies at the base of the asterism known as ‘the Sickle’ (a backwards ?) which forms the head and mane and chest of the celestial lion. The other stars that form the ‘Sickle’ are eta (η), gamma (γ), zeta (ζ), mu (μ) and epsilon (ε). Gamma Leonis is a very nice double star which is suitable for observe ...
... lies at the base of the asterism known as ‘the Sickle’ (a backwards ?) which forms the head and mane and chest of the celestial lion. The other stars that form the ‘Sickle’ are eta (η), gamma (γ), zeta (ζ), mu (μ) and epsilon (ε). Gamma Leonis is a very nice double star which is suitable for observe ...
Today`s Powerpoint
... of the Milky Way Galaxy? A: hydrogen gas B: stars C: dead stars (white dwarfs, neutron stars, and black ...
... of the Milky Way Galaxy? A: hydrogen gas B: stars C: dead stars (white dwarfs, neutron stars, and black ...
Our galaxy, the Milky Way, has about 3 billion solar masses of HI
... with the very luminous new O, B and A stars that define the spiral arms. Molecular hydrogen H2 does not produce radio emission. Fortunately, there is evidence of a correlation between the amount of CO and H2, so the easily detected CO radio emission lines (at 2.6 and 1.3 mm) are used to infer the am ...
... with the very luminous new O, B and A stars that define the spiral arms. Molecular hydrogen H2 does not produce radio emission. Fortunately, there is evidence of a correlation between the amount of CO and H2, so the easily detected CO radio emission lines (at 2.6 and 1.3 mm) are used to infer the am ...
Spiral structure of the Third Galactic Quadrant and the solution to the
... to be younger than 100 million years. These are listed in Table 1 and plotted in Fig. 2 which represents the third quadrant of the Galactic plane seen from above. Also plotted, are the BPs detected in the backgrounds of several clusters. A strip about 1.5 kpc wide, extending from l=210o to l=260o , ...
... to be younger than 100 million years. These are listed in Table 1 and plotted in Fig. 2 which represents the third quadrant of the Galactic plane seen from above. Also plotted, are the BPs detected in the backgrounds of several clusters. A strip about 1.5 kpc wide, extending from l=210o to l=260o , ...
New light on our Sun`s fate - Space Telescope Science Institute
... star’s mass and luminosity are correlated. Astronomers also began to wonder how stars evolve and thought that perhaps they “move” across the H-R diagram. Over decades, we’ve learned that a star’s mass controls its life; along the way, that property also determines its brightness and temperature. We ...
... star’s mass and luminosity are correlated. Astronomers also began to wonder how stars evolve and thought that perhaps they “move” across the H-R diagram. Over decades, we’ve learned that a star’s mass controls its life; along the way, that property also determines its brightness and temperature. We ...
Chapter 23 The Milky Way Galaxy
... The persistence of the spiral arms as density waves, rather than as structures made up of particular stars, may be understood using a traffic jam as an analogy. The jam persists even though particular cars move in and out of it, and it can persist long after the event that triggered it is over. ...
... The persistence of the spiral arms as density waves, rather than as structures made up of particular stars, may be understood using a traffic jam as an analogy. The jam persists even though particular cars move in and out of it, and it can persist long after the event that triggered it is over. ...
Slide 1
... Making of a spiral galaxy • Start with a fairly uniform cloud of hydrogen • Gravitational collapse forms protogalactic clouds • First stars are born in this spheroid (such stars are billions of years old “fossil record”) ...
... Making of a spiral galaxy • Start with a fairly uniform cloud of hydrogen • Gravitational collapse forms protogalactic clouds • First stars are born in this spheroid (such stars are billions of years old “fossil record”) ...
Chapter 15
... burst at galaxy’s birth during its initial collapse – Pop I formed much later and are still forming today ...
... burst at galaxy’s birth during its initial collapse – Pop I formed much later and are still forming today ...
Open cluster
An open cluster, also known as galactic cluster, is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age. More than 1,100 open clusters have been discovered within the Milky Way Galaxy, and many more are thought to exist. They are loosely bound by mutual gravitational attraction and become disrupted by close encounters with other clusters and clouds of gas as they orbit the galactic center, resulting in a migration to the main body of the galaxy as well as a loss of cluster members through internal close encounters. Open clusters generally survive for a few hundred million years, with the most massive ones surviving for a few billion years. In contrast, the more massive globular clusters of stars exert a stronger gravitational attraction on their members, and can survive for longer. Open clusters have been found only in spiral and irregular galaxies, in which active star formation is occurring.Young open clusters may still be contained within the molecular cloud from which they formed, illuminating it to create an H II region. Over time, radiation pressure from the cluster will disperse the molecular cloud. Typically, about 10% of the mass of a gas cloud will coalesce into stars before radiation pressure drives the rest of the gas away.Open clusters are key objects in the study of stellar evolution. Because the cluster members are of similar age and chemical composition, their properties (such as distance, age, metallicity and extinction) are more easily determined than they are for isolated stars. A number of open clusters, such as the Pleiades, Hyades or the Alpha Persei Cluster are visible with the naked eye. Some others, such as the Double Cluster, are barely perceptible without instruments, while many more can be seen using binoculars or telescopes. The Wild Duck Cluster, M11, is an example.