Powerpoint of lecture 1
... • Some giant stars, in variable numbers If all main sequences are the same (i.e. have the same absolute magnitude at a given temperature), then can create a composite HR diagram (Handout 3) – plausible if all stars formed at same time out of same gas cloud same age and composition Then find distan ...
... • Some giant stars, in variable numbers If all main sequences are the same (i.e. have the same absolute magnitude at a given temperature), then can create a composite HR diagram (Handout 3) – plausible if all stars formed at same time out of same gas cloud same age and composition Then find distan ...
CHARACTERISTICS OF STARS
... The brightness of a star depends on both its size and its temperature. How bright a star looks from Earth depends on both its distance and how bright the star actually is. The brightness of a star can be described in 2 different ways: apparent brightness and absolute brightness. A star’s apparent br ...
... The brightness of a star depends on both its size and its temperature. How bright a star looks from Earth depends on both its distance and how bright the star actually is. The brightness of a star can be described in 2 different ways: apparent brightness and absolute brightness. A star’s apparent br ...
Micro_lect20
... Orionis, one of the brightest stars in the familiar constellation of Orion, the Hunter. 4. The name Betelgeuse is Arabic in origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright hotspot is revealed on the star's surf ...
... Orionis, one of the brightest stars in the familiar constellation of Orion, the Hunter. 4. The name Betelgeuse is Arabic in origin. As a massive red supergiant, it is nearing the end of its life and will soon become a supernova. In this historic image, a bright hotspot is revealed on the star's surf ...
Lab 5 Takehome
... Figure 1 on the attached page shows the HR diagram that you were given in class. Figure 2 shows the same stars, but here what’s plotted is the apparent brightness of the star as seen from ...
... Figure 1 on the attached page shows the HR diagram that you were given in class. Figure 2 shows the same stars, but here what’s plotted is the apparent brightness of the star as seen from ...
General Astronomy - Stockton University
... – Astronomers must reconstruct the workings and evolution of the Universe from this short snapshot. • This is similar to reconstructing the politics of the Earth from a one-second glimpse of events. • Fortunately the ‘astronomical time machine’ allows us to look back and see varying stages of evolut ...
... – Astronomers must reconstruct the workings and evolution of the Universe from this short snapshot. • This is similar to reconstructing the politics of the Earth from a one-second glimpse of events. • Fortunately the ‘astronomical time machine’ allows us to look back and see varying stages of evolut ...
17 The Deaths of Stars
... In February 1987, SN1987A occurred in the Large Magellanic Cloud, a neighboring galaxy. Its light curve indicates a somewhat atypical type II supernova. ...
... In February 1987, SN1987A occurred in the Large Magellanic Cloud, a neighboring galaxy. Its light curve indicates a somewhat atypical type II supernova. ...
the magellanic clouds newsletter - Keele University Astrophysics
... size of the age bins, we account for the fact that a cluster could actually reside in one of a few adjacent age bins. We confirm that there exist some variations of the LMC CFs in terms of their spatial distributions, although some caveats should be pointed out. 30 Doradus resulted to be the region ...
... size of the age bins, we account for the fact that a cluster could actually reside in one of a few adjacent age bins. We confirm that there exist some variations of the LMC CFs in terms of their spatial distributions, although some caveats should be pointed out. 30 Doradus resulted to be the region ...
RELATION BETWEEN LONGITUDE AND TIME
... infinite radius of which the earth is the center Celestial poles – are the points where the earth’s axis prolonged pierces the celestial sphere Zenith – the point where a vertical line pierces the celestial sphere above the head of the observer Nadir – the corresponding point in the opposite h ...
... infinite radius of which the earth is the center Celestial poles – are the points where the earth’s axis prolonged pierces the celestial sphere Zenith – the point where a vertical line pierces the celestial sphere above the head of the observer Nadir – the corresponding point in the opposite h ...
What is a Star - Optics Institute of Southern California
... Main sequence stars have zones (in radius) which are convective, and zones which are radiative, and the location of these zones depends on the behavior of the opacity, in addition to the other properties of the star. Massive stars (i.e., greater than several solar masses) are convective deep in the ...
... Main sequence stars have zones (in radius) which are convective, and zones which are radiative, and the location of these zones depends on the behavior of the opacity, in addition to the other properties of the star. Massive stars (i.e., greater than several solar masses) are convective deep in the ...
The Science of Life in the Universe (Chap 2
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
9J Gravity and Space
... Astronomy vs. Astrology Astronomy and Astrology are not the same! Astronomy is the scientific study of stars, planets, and other objects in outer space Astrology is the study of how the positions of the stars have a supposed influence on events and on the lives of people. What most people know abou ...
... Astronomy vs. Astrology Astronomy and Astrology are not the same! Astronomy is the scientific study of stars, planets, and other objects in outer space Astrology is the study of how the positions of the stars have a supposed influence on events and on the lives of people. What most people know abou ...
The Science of Life in the Universe (Chap 2
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
Chapter 3 Notes
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
... Why are some elements (like gold) quite rare, while others (like carbon) are more common? Are there other solar systems? What evidence is there for other solar systems? (to be discussed later in semester) ...
Spectral Variations of Several RV Tauri Type Stars Patrick Durant
... National Observatory (KPNO). The set of spectra were examined to determine their effective temperature and other physical properties as a function of time. We present our results which include the run of temperature and luminosity variations vs. the star’s photometric behavior. Changes in other phys ...
... National Observatory (KPNO). The set of spectra were examined to determine their effective temperature and other physical properties as a function of time. We present our results which include the run of temperature and luminosity variations vs. the star’s photometric behavior. Changes in other phys ...
Earth Science, 10th edition Chapter 23: Beyond Our Solar System I
... a. Over 3 solar masses b. Short life span c. Terminates in a brilliant explosion called a supernova d. Interior condenses e. May produce a hot, dense object that is either a 1. Neutron star (from a massive star) or a 2. Black hole (from a very massive star) D. H-R diagrams are used to study stellar ...
... a. Over 3 solar masses b. Short life span c. Terminates in a brilliant explosion called a supernova d. Interior condenses e. May produce a hot, dense object that is either a 1. Neutron star (from a massive star) or a 2. Black hole (from a very massive star) D. H-R diagrams are used to study stellar ...
Lecture 22 - Seattle Central
... The iron core gets crushed so that it’s no longer iron, the electrons and protons combine into neutrons, the volume of the core reduces by a factor of 1018 Outer core falls in at about 25% of the speed of light, the core temp rises to ...
... The iron core gets crushed so that it’s no longer iron, the electrons and protons combine into neutrons, the volume of the core reduces by a factor of 1018 Outer core falls in at about 25% of the speed of light, the core temp rises to ...
previous lectures - Gwynedd Astronomy Society
... Adaptive optics Tides Motor drives for telescopes James Nasmyth Aids to observation X-ray binaries Black hole in M87 Comet Shoemaker-Levy NASA bulletins on the Internet SOS for the Earth / Missing mass Deep sky objects Titan Dark matter Shareware - Our Cosmohood / Skyglobe History of astronomy Optic ...
... Adaptive optics Tides Motor drives for telescopes James Nasmyth Aids to observation X-ray binaries Black hole in M87 Comet Shoemaker-Levy NASA bulletins on the Internet SOS for the Earth / Missing mass Deep sky objects Titan Dark matter Shareware - Our Cosmohood / Skyglobe History of astronomy Optic ...
Volume 1 (Issue 6), June 2012
... direction, but being close to horizon, observers may have some difficulties in spotting the objects. Very close to horizon a reddish color star called Aldebran in constellation Taurus and a bluish white star Capella can also be observed in the same direction. ...
... direction, but being close to horizon, observers may have some difficulties in spotting the objects. Very close to horizon a reddish color star called Aldebran in constellation Taurus and a bluish white star Capella can also be observed in the same direction. ...
Nebulae
... • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas cloud, compressing the gas and triggering the formation of more protostars nearby ...
... • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas cloud, compressing the gas and triggering the formation of more protostars nearby ...