The formation and destruction of molecular clouds and galactic star
... We first model the growth of molecular clouds. Inoue & Inutsuka (2012) showed that we need multiple episodes of compression of HI clouds to create molecular clouds. According to the standard picture of supernova-regulated ISM dynamics (e.g., McKee & Ostriker 1977), the typical timescale between cons ...
... We first model the growth of molecular clouds. Inoue & Inutsuka (2012) showed that we need multiple episodes of compression of HI clouds to create molecular clouds. According to the standard picture of supernova-regulated ISM dynamics (e.g., McKee & Ostriker 1977), the typical timescale between cons ...
The Search for New “r-process-Enhanced” Metal
... Nature’s Gift to Nuclear Astrophysics • There now exists a small number of very metal-poor stars ([Fe/H] < -2.0) which have been discovered recently that exhibit strong enhancements in their ratios of r-process elements, compared with the Sun • r-I: 0.3 < [r-process/Fe] < 1.0 (~ 10 known) • r-II: 1 ...
... Nature’s Gift to Nuclear Astrophysics • There now exists a small number of very metal-poor stars ([Fe/H] < -2.0) which have been discovered recently that exhibit strong enhancements in their ratios of r-process elements, compared with the Sun • r-I: 0.3 < [r-process/Fe] < 1.0 (~ 10 known) • r-II: 1 ...
The Warrumbungle Observer The Warrumbungle Observer
... Jupiter is the brightest object excluding the moon in the evening sky this month. It can be found in the constellation Capricorn which looks like the letter ‘D’ in the eastern evening sky. Careful observations of Jupiter’s position each night will show Jupiter moving compared to the other stars in C ...
... Jupiter is the brightest object excluding the moon in the evening sky this month. It can be found in the constellation Capricorn which looks like the letter ‘D’ in the eastern evening sky. Careful observations of Jupiter’s position each night will show Jupiter moving compared to the other stars in C ...
Color and Temperature of Stars
... which comes from the fact that a heated surface does not emit the same amount of energy at all possible electromagnetic wavelengths. In fact, the light follows a unique curve deduced by physicist Maxwell Planck. We call it the 'Planck Blackbody Curve' because all bodies, from iron bars, to the dista ...
... which comes from the fact that a heated surface does not emit the same amount of energy at all possible electromagnetic wavelengths. In fact, the light follows a unique curve deduced by physicist Maxwell Planck. We call it the 'Planck Blackbody Curve' because all bodies, from iron bars, to the dista ...
Photometric analysis of the globular cluster NGC5466
... open clusters and globular clusters. Open clusters do not have a regular shape and have from few tens to 103 stars, losely bound to each others, which are spread in a very large space; therefore, their density is low. The population of open clusters is quite young and some bright blue stars are iden ...
... open clusters and globular clusters. Open clusters do not have a regular shape and have from few tens to 103 stars, losely bound to each others, which are spread in a very large space; therefore, their density is low. The population of open clusters is quite young and some bright blue stars are iden ...
Distant Stars - How far away is it
... the Milky Way between six and nine billion years ago. [One planet has been discovered in the orbit around the star.] T Lyrae – 2064 light years T Lyrae is a Carbon Star. It has used up most of their Hydrogen fuel and is now fusing Helium into Carbon. [Currents in the star's structure bring some of t ...
... the Milky Way between six and nine billion years ago. [One planet has been discovered in the orbit around the star.] T Lyrae – 2064 light years T Lyrae is a Carbon Star. It has used up most of their Hydrogen fuel and is now fusing Helium into Carbon. [Currents in the star's structure bring some of t ...
ASTRONOMY 0089: EXAM 1 Class Meets M,W,F, 1:00 PM Feb 12
... b. the name given to a spectrum showing both emission and absorption lines. c. the name given to the physical process which enables a solid to produce a continuous spectrum. d. the change in wavelength caused by a light source moving towards or away from an observer. e. the name given to those atmos ...
... b. the name given to a spectrum showing both emission and absorption lines. c. the name given to the physical process which enables a solid to produce a continuous spectrum. d. the change in wavelength caused by a light source moving towards or away from an observer. e. the name given to those atmos ...
Science Framework for California Public Schools
... nebula. As Earth accreted, it was heated by the compressing of its material by grav ity and by the kinetic energy released when moving bits of debris and even plan etoids struck and joined. Eventually, the interior of the planet heated sufficiently for iron, an abundant element in the earth, to me ...
... nebula. As Earth accreted, it was heated by the compressing of its material by grav ity and by the kinetic energy released when moving bits of debris and even plan etoids struck and joined. Eventually, the interior of the planet heated sufficiently for iron, an abundant element in the earth, to me ...
Document
... resolved stellar population studies surroundings of the Milky Way and beyond Giuseppina Battaglia ...
... resolved stellar population studies surroundings of the Milky Way and beyond Giuseppina Battaglia ...
Descriptions For Posters
... "birds-eye view" of the spiral structure. The galaxy is similar to our Milky Way, but our favorable view provides a better picture of the typical architecture of spiral galaxies. The spiral arms, which wind all the way down into the nucleus, are made up of young, bluish, hot stars formed in the past ...
... "birds-eye view" of the spiral structure. The galaxy is similar to our Milky Way, but our favorable view provides a better picture of the typical architecture of spiral galaxies. The spiral arms, which wind all the way down into the nucleus, are made up of young, bluish, hot stars formed in the past ...
More about the game plan:
... • Evidence showing density waves do occur. • Old, red stars show spiral density perturbation. • Molecular clouds form on inner edges of spiral arms. • HI gas flow shows discontinuity due to shocks at inner edges of spiral arms. • Bright young stars also in narrow arms. ...
... • Evidence showing density waves do occur. • Old, red stars show spiral density perturbation. • Molecular clouds form on inner edges of spiral arms. • HI gas flow shows discontinuity due to shocks at inner edges of spiral arms. • Bright young stars also in narrow arms. ...
Nature paper - University of Southampton
... of spin period, a result that had not been predicted and which still remains to be explained. Be/X-ray binaries (BeXs) are strong X-ray sources because their neutron stars accrete material at a relatively high rate. Their masslosing Be-type companions are fast-rotating 8M8 {18M8 mainsequence stars t ...
... of spin period, a result that had not been predicted and which still remains to be explained. Be/X-ray binaries (BeXs) are strong X-ray sources because their neutron stars accrete material at a relatively high rate. Their masslosing Be-type companions are fast-rotating 8M8 {18M8 mainsequence stars t ...
1/20/09 301 Physics Chapter 12 The Family of Stars Triangulation
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
... – Superimposed on this orbital motion are small random motions of about 20 km/sec – In addition to their motion through space, stars spin on their axes and this spin can be measured using the Doppler shift technique – young stars are found to rotate faster than old stars ...
Nova
... around Nova Cygni 1992 The ring is the edge of a bubble of hot gas blasted into space by the nova (after Hubble corrections made). Another Hubble picture taken 467 days after the explosion [left] provided the first glimpse of the ring and a mysterious bar-like structure. But the ...
... around Nova Cygni 1992 The ring is the edge of a bubble of hot gas blasted into space by the nova (after Hubble corrections made). Another Hubble picture taken 467 days after the explosion [left] provided the first glimpse of the ring and a mysterious bar-like structure. But the ...
Monster Black Holes - Indiana University Astronomy
... • What happens if a star’s gravity is so strong that its escape velocity is faster than the speed of light? • From the speed of light, Michell calculated that light could not escape from a star 500 x the Sun’s radius and the same density (125,000,000 solar masses!) • The star would be dark! ...
... • What happens if a star’s gravity is so strong that its escape velocity is faster than the speed of light? • From the speed of light, Michell calculated that light could not escape from a star 500 x the Sun’s radius and the same density (125,000,000 solar masses!) • The star would be dark! ...
The Butterfly Nebula (NGC 6302)
... A butterfly emerges from a dying star Ordinary stars like our Sun live undistinguished lives. They steadily churn out heat and light for billions of years. Oddly enough, their lives become more exciting when they run out of hydrogen fuel and reach retirement age. This is when these stars begin to st ...
... A butterfly emerges from a dying star Ordinary stars like our Sun live undistinguished lives. They steadily churn out heat and light for billions of years. Oddly enough, their lives become more exciting when they run out of hydrogen fuel and reach retirement age. This is when these stars begin to st ...
Where to begin the adventure with variable stars?
... In this way we have found the stars and we can begin photometric observations. Their result will probably impress not only us, but also other students and our friends. Also the acquired skills of navigating in the sky will be a source of satisfaction! ...
... In this way we have found the stars and we can begin photometric observations. Their result will probably impress not only us, but also other students and our friends. Also the acquired skills of navigating in the sky will be a source of satisfaction! ...
... together. Astronomers with their impressive new telescopes are making fascinating observations of stars in the process of forming, but cannot see inside the disks surrounding the stars nor can they observe all the chemical processes at work. Meteoriticists have the products of only one star's nebula ...
PowerPoint 프레젠테이션
... Observations of NS-MS(main sequence) binary requires different evolution process ...
... Observations of NS-MS(main sequence) binary requires different evolution process ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.