Compa ring between Spectroscopic and Photometric Method for
... velocities as function of time or phase. Fiigure 3 shows velocity curve as a function of time, according to position of the stars. When the star moves away from us, the velocity is defined as positive asnd when stars move in our direction the velocity is negative. In some way this curve is similar t ...
... velocities as function of time or phase. Fiigure 3 shows velocity curve as a function of time, according to position of the stars. When the star moves away from us, the velocity is defined as positive asnd when stars move in our direction the velocity is negative. In some way this curve is similar t ...
Math 111: Logarithm Scales
... where M0 is a very rough estimate of the seismic energy of an earthquake (in dynes-cm). (a) The Kern County earthquake of 1952 released about 2 × 1027 dyne-cm of seismic energy. What was the moment magnitude of the Kern County earthquake? (b) The El Centro earthquake of 1940 had a moment magnitude o ...
... where M0 is a very rough estimate of the seismic energy of an earthquake (in dynes-cm). (a) The Kern County earthquake of 1952 released about 2 × 1027 dyne-cm of seismic energy. What was the moment magnitude of the Kern County earthquake? (b) The El Centro earthquake of 1940 had a moment magnitude o ...
Document
... Movement of the stars • Long-exposure photographs show the stars to be moving in circles around the Pole Star. • They are not actually moving, we are simply observing from a spinning Earth. • After 23h 56m (SIDE REAL DAY) they will appear to be back in the same place. ...
... Movement of the stars • Long-exposure photographs show the stars to be moving in circles around the Pole Star. • They are not actually moving, we are simply observing from a spinning Earth. • After 23h 56m (SIDE REAL DAY) they will appear to be back in the same place. ...
GRB Progenitors and their environments
... star models require high rotation with minimal angular momentum loss in winds (perhaps rotationally-induced mixing can help?). Binary systems are used to i) remove the hydrogen envelope without losing angular momentum, ii) spinning up the stellar core (through a merger or orbital coupling) • Helium- ...
... star models require high rotation with minimal angular momentum loss in winds (perhaps rotationally-induced mixing can help?). Binary systems are used to i) remove the hydrogen envelope without losing angular momentum, ii) spinning up the stellar core (through a merger or orbital coupling) • Helium- ...
Determining the Sizes of Stars Using the HR Diagram
... the left and colder stars to the right. More luminous (intrinsically bright) stars lie at the top of the diagram and lower luminosity (intrinsically faint) stars lie at the bottom of the diagram. 5. Explain that stars are grouped into four different categories: ● Main Sequence Stars: The characteris ...
... the left and colder stars to the right. More luminous (intrinsically bright) stars lie at the top of the diagram and lower luminosity (intrinsically faint) stars lie at the bottom of the diagram. 5. Explain that stars are grouped into four different categories: ● Main Sequence Stars: The characteris ...
November News Letter - Boise Astronomical Society
... stars located in the middle of the rectangle of Orion’s body; this is Orion’s Belt. If you have a pair of binoculars handy, then scan downward from the middle star in Orion’s Belt. These stars represent his sword and the second star in the sword should look a little fuzzy. That fuzzy spot is located ...
... stars located in the middle of the rectangle of Orion’s body; this is Orion’s Belt. If you have a pair of binoculars handy, then scan downward from the middle star in Orion’s Belt. These stars represent his sword and the second star in the sword should look a little fuzzy. That fuzzy spot is located ...
Stars - CBSD.org
... night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • So, a star’s apparent magnitude is essentially its brightness. – The ...
... night sky were “first order magnitude” stars. • As they got dimmer, he classified them as “second magnitude,” “third magnitude,” and so on… • He got up to magnitude 6, after which stars are too dim to be seen without a telescope. • So, a star’s apparent magnitude is essentially its brightness. – The ...
The classification of stellar spectra
... Blackbody continuum spectrum by the star’s interior (hot dense gas) + a set of absorption lines given by the stellar atmosphere (cooler, low density gas). Balmer lines Ca II ...
... Blackbody continuum spectrum by the star’s interior (hot dense gas) + a set of absorption lines given by the stellar atmosphere (cooler, low density gas). Balmer lines Ca II ...
Stellarium01 Starter Part A B Doc - ASTR101
... Start Stellarium. Use “Current Location” listed above by going to the Icon Bar at the left-hand side of the screen and find the Location window icon (shortcut key= “F6”, in some linux it is fn-f6) and click on it. Scroll through the list of locations in the window until you find the current location ...
... Start Stellarium. Use “Current Location” listed above by going to the Icon Bar at the left-hand side of the screen and find the Location window icon (shortcut key= “F6”, in some linux it is fn-f6) and click on it. Scroll through the list of locations in the window until you find the current location ...
Name: Astronomy Lab: The Hertzsprung-Russell (H
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
... Sometimes the student of astronomy starts to become overwhelmed trying to understand the many measurements and observations astronomers make. Data concerning distance, brightness, color, spectral class, mass, temperature, motion, etc. all seem to be gathered in an attempt to impress the student with ...
Stars III - Indiana University Astronomy
... • Sun-like stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than carbon but end as white dwarfs ...
... • Sun-like stars with <2MSun have long lives, never become hot enough to fuse carbon nuclei, and end as white dwarfs • Intermediate mass stars can make elements heavier than carbon but end as white dwarfs ...
3-color photometry of stellar cluster - Kiepenheuer
... One way to organise stars is to plot the luminosity against their spectral type or effective temperature. This kind of diagrams are the so called Hertzsprung-Russell diagrams (HRD). If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the cente ...
... One way to organise stars is to plot the luminosity against their spectral type or effective temperature. This kind of diagrams are the so called Hertzsprung-Russell diagrams (HRD). If many stars are plotted it is immediately clear that stars appear in specific ranges of these diagrams. In the cente ...
Photometry of star clusters with SalsaJ - Eu-Hou
... Photometry is generally used to generate light curves of objects such as variable stars and supernovae, where the interest is the variation of total light energy output by the system over time. It can also be used to discover exoplanets, by measuring the intensity of a stars light over a period of t ...
... Photometry is generally used to generate light curves of objects such as variable stars and supernovae, where the interest is the variation of total light energy output by the system over time. It can also be used to discover exoplanets, by measuring the intensity of a stars light over a period of t ...
Star
... • When a star explosively brightens, it is called a nova (new star). Excessively large explosions are called supernovas. • During the outburst, the outer layer of the star is ejected at high speed. • After reaching maximum brightness in a few days, the nova slowly returns in a year or so to its orig ...
... • When a star explosively brightens, it is called a nova (new star). Excessively large explosions are called supernovas. • During the outburst, the outer layer of the star is ejected at high speed. • After reaching maximum brightness in a few days, the nova slowly returns in a year or so to its orig ...
20 pm - Starmap
... HOW TO USE THE MAP The map shows what you see looking at the zenith. The apparent inversion of East and West compared to road maps is normal. Hold the map face down above your head, and the cardinal points will be oriented as usual. As a starting point, face North, holding the map in your eyesight d ...
... HOW TO USE THE MAP The map shows what you see looking at the zenith. The apparent inversion of East and West compared to road maps is normal. Hold the map face down above your head, and the cardinal points will be oriented as usual. As a starting point, face North, holding the map in your eyesight d ...
Cassiopeia (constellation)
Cassiopeia is a constellation in the northern sky, named after the vain queen Cassiopeia in Greek mythology, who boasted about her unrivalled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer Ptolemy, and it remains one of the 88 modern constellations today. It is easily recognizable due to its distinctive 'M' shape when in upper culmination but in higher northern locations when near lower culminations in spring and summer it has a 'W' shape, formed by five bright stars. It is bordered by Andromeda to the south, Perseus to the southeast, and Cepheus to the north. It is opposite the Big Dipper.In northern locations above 34ºN latitude it is visible year-round and in the (sub)tropics it can be seen at its clearest from September to early November in its characteristic 'M' shape. Even in low southern latitudes below 25ºS is can be seen low in the North.