22 October: The Formation of Stars
... • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
... • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
Groups of Stars
... • Many stars exist in groups of two or more stars that are held close together because of gravity • More than half of all stars are members of star systems • Is our Sun part of a star system? ...
... • Many stars exist in groups of two or more stars that are held close together because of gravity • More than half of all stars are members of star systems • Is our Sun part of a star system? ...
Physical properties of stars
... that are 1,000 times larger than our sun. pg. 450 Temperature: Surface temperatures range from 3000K to 30,000K Color is an indication of temperature. Blue hottest White Yellow Orange Red coolest Mass While the size of stars varies widely the mass does not. 15 times our Sun’s mass to .2 times our Su ...
... that are 1,000 times larger than our sun. pg. 450 Temperature: Surface temperatures range from 3000K to 30,000K Color is an indication of temperature. Blue hottest White Yellow Orange Red coolest Mass While the size of stars varies widely the mass does not. 15 times our Sun’s mass to .2 times our Su ...
STARS - AN INTRODUCTION
... Different types of gases make the star burn. They give off light and heat. The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
... Different types of gases make the star burn. They give off light and heat. The Sun is a medium sized star. It is bigger than all eight planets combined! However, there are stars a lot bigger than the Sun! The largest stars are called ...
PH142 - Mohawk Valley Community College
... 11. Describe and contrast galactic clusters, globular clusters, X-ray bursters. 12. Relate the various types of variable stars to stellar evolution. 13. Provide examples of the atoms and molecules existing in the interstellar medium. 14. Sketch the life cycle of several stars. ...
... 11. Describe and contrast galactic clusters, globular clusters, X-ray bursters. 12. Relate the various types of variable stars to stellar evolution. 13. Provide examples of the atoms and molecules existing in the interstellar medium. 14. Sketch the life cycle of several stars. ...
New Directions in Star Cluster Research
... Astrophysics (physics of stars) Is not an experimental science - we cannot devise and conduct experiments in order to test theories Theory is validated by observations Evidence often derived from past events Information we can gather is very restricted - apparent brightness (depends on distance), l ...
... Astrophysics (physics of stars) Is not an experimental science - we cannot devise and conduct experiments in order to test theories Theory is validated by observations Evidence often derived from past events Information we can gather is very restricted - apparent brightness (depends on distance), l ...
Milky Way
... cataloged over 1000 nebulae. – Many star clusters – Open clusters matched the Milky Way – Globular clusters more uniform in space ...
... cataloged over 1000 nebulae. – Many star clusters – Open clusters matched the Milky Way – Globular clusters more uniform in space ...
ASTR2050 Spring 2005 • In this class we will ...
... Sirius A: A1 Main Sequence star SiriusB: White dwarf Visual ...
... Sirius A: A1 Main Sequence star SiriusB: White dwarf Visual ...
Astronomy
... inward force of gravity is balanced by the outward pressure from fusion and radiation inside a star ...
... inward force of gravity is balanced by the outward pressure from fusion and radiation inside a star ...
Stellar Properties and Stellar Evolution Study Guide Name Why
... 7. Planets shine by reflected star light. How can planets be brighter than stars? ...
... 7. Planets shine by reflected star light. How can planets be brighter than stars? ...
Study Guide
... What are the differences between the 3 types of galaxies? Spiral: Elliptical: Irregular: ...
... What are the differences between the 3 types of galaxies? Spiral: Elliptical: Irregular: ...
Ch. 27.3 Star Groups
... 2,000 light-years thick in the center. One complete rotation in 200 million years. Our sun is about 30,000 light-years from the center. ...
... 2,000 light-years thick in the center. One complete rotation in 200 million years. Our sun is about 30,000 light-years from the center. ...
22.2 Stars Change Over Their Life Cycles
... Nebula: cloud of gas and dust in which stars may form ...
... Nebula: cloud of gas and dust in which stars may form ...
PHYSICS DEPARTMENT Syllabus: Phys 200 (3 cr
... Stellar Evolution and the Death of Stars Birth of stars. Evolution from the main-sequence to Red Giants. Testing stellar evolution using observed star clusters. Evolution to white Dwarfs, Neutron Stars or Black Holes. ...
... Stellar Evolution and the Death of Stars Birth of stars. Evolution from the main-sequence to Red Giants. Testing stellar evolution using observed star clusters. Evolution to white Dwarfs, Neutron Stars or Black Holes. ...
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.