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Lecture1-1
... The colors of model SEDs (blue dots) and observed galaxies (black dots). Left panels shows the colors without emission line correction and right panels with emission line correction ...
... The colors of model SEDs (blue dots) and observed galaxies (black dots). Left panels shows the colors without emission line correction and right panels with emission line correction ...
Stellarium – a valuable resource for teaching astronomy in the
... the night sky changes. Each night the stars in the east rise four minutes earlier than the previous night. This can be demonstrated on Stellarium by setting up a view facing the eastern horizon and advancing time one day at a time so that the same time is displayed for each night. Each night, the st ...
... the night sky changes. Each night the stars in the east rise four minutes earlier than the previous night. This can be demonstrated on Stellarium by setting up a view facing the eastern horizon and advancing time one day at a time so that the same time is displayed for each night. Each night, the st ...
Instructor`s Guide for Virtual Astronomy Laboratories
... This material was designed to serve two general functions: on the one hand it represents a set of virtual laboratories that can be used as part or all of an introductory astronomy laboratory sequence, either within a normal laboratory setting or in a distance learning environment. On the other hand, ...
... This material was designed to serve two general functions: on the one hand it represents a set of virtual laboratories that can be used as part or all of an introductory astronomy laboratory sequence, either within a normal laboratory setting or in a distance learning environment. On the other hand, ...
Ancient to Modern Astronomy
... stars in space appear – It is not physical as the ancients believed! 2. Represents only the stars we can see with our eyes. And the are fixed (So no, planets, exoplanets, pulsars, other stars we can’t see, etc…) 3. Earth centered ...
... stars in space appear – It is not physical as the ancients believed! 2. Represents only the stars we can see with our eyes. And the are fixed (So no, planets, exoplanets, pulsars, other stars we can’t see, etc…) 3. Earth centered ...
The evolution of organic matter in space
... of carbon, the basis of organic chemistry. After hydrogen is exhausted, further nuclear reactions start in the core of stars with masses greater than half a solar mass leading to carbon and heavier elements, and up to 56 Fe for the more massive stars. Heavier elements than iron are formed during the ...
... of carbon, the basis of organic chemistry. After hydrogen is exhausted, further nuclear reactions start in the core of stars with masses greater than half a solar mass leading to carbon and heavier elements, and up to 56 Fe for the more massive stars. Heavier elements than iron are formed during the ...
lect3 — 1 Measuring stars: What can be measured?
... Hence by measuring the apparent magnitude m, and somehow knowing the absolute magnitude M (i.e. the true luminosity), one can infer the distance D (in pc). H-R diagram distance: We discussed the H-R diagram last time as a relation between temperature and luminosity. In observational terms, it is act ...
... Hence by measuring the apparent magnitude m, and somehow knowing the absolute magnitude M (i.e. the true luminosity), one can infer the distance D (in pc). H-R diagram distance: We discussed the H-R diagram last time as a relation between temperature and luminosity. In observational terms, it is act ...
Here
... depends on the initial mass of the star. • Although there is a continuous range of masses, there are 4 ranges of masses that capture all of the interesting features. ...
... depends on the initial mass of the star. • Although there is a continuous range of masses, there are 4 ranges of masses that capture all of the interesting features. ...
Radio Spectrum Use by the Radio Astronomy Service in
... The original request of about 1% of the center frequencies for the bandwidths of these continuum bands has proved inadequate. New techniques require larger bandwidths, in order to achieve the necessary sensitivity, and so, in some parts of the spectrum, bandwidth expansions have been suggested. Sinc ...
... The original request of about 1% of the center frequencies for the bandwidths of these continuum bands has proved inadequate. New techniques require larger bandwidths, in order to achieve the necessary sensitivity, and so, in some parts of the spectrum, bandwidth expansions have been suggested. Sinc ...
The Cosmos in Your Pocket: How Cosmological
... The notion that physical principles on the the Earth also apply to the rest of the cosmos is not a new idea. Galileo suggested this as far back as 1592. I’ve often heard the complaint, mostly from various pseudo-scientific groups, that we have no way of knowing, or “proving”, what is really happenin ...
... The notion that physical principles on the the Earth also apply to the rest of the cosmos is not a new idea. Galileo suggested this as far back as 1592. I’ve often heard the complaint, mostly from various pseudo-scientific groups, that we have no way of knowing, or “proving”, what is really happenin ...
Halley`s Comet is arguably the most famous comet. It is a "periodic
... When Halley's Comet came by Earth in 1986, it was the first time we could send spacecraft up to look at it. That was a fortunate occurrence, as the comet ended up being underwhelming in observations from Earth. When the comet made its closest approach to the sun, it was on the opposite side of that ...
... When Halley's Comet came by Earth in 1986, it was the first time we could send spacecraft up to look at it. That was a fortunate occurrence, as the comet ended up being underwhelming in observations from Earth. When the comet made its closest approach to the sun, it was on the opposite side of that ...
View Diary of Astronomical Events - Astronomical Society of Singapore
... G1 Thatcher, which was discovered in 1861. The shower runs annually from April 16-25. It peaks this year on the night of the night of the 22nd and morning of the 23rd. However, the last quarter moon will be blocking the less bright meteors from view. Best viewing will be from a dark location after m ...
... G1 Thatcher, which was discovered in 1861. The shower runs annually from April 16-25. It peaks this year on the night of the night of the 22nd and morning of the 23rd. However, the last quarter moon will be blocking the less bright meteors from view. Best viewing will be from a dark location after m ...
spectral lines as distant measurement tools
... Figure 2: The Hertzsprung-Russell diagram (HRD) plotting intrinsic stellar brightness (vertical) against spectral type (horizontal). The horizontal axis follows Annie Cannon’s Harvard classification which you just rediscovered. Stars to the right have red appearance, to the left they are blue. The ...
... Figure 2: The Hertzsprung-Russell diagram (HRD) plotting intrinsic stellar brightness (vertical) against spectral type (horizontal). The horizontal axis follows Annie Cannon’s Harvard classification which you just rediscovered. Stars to the right have red appearance, to the left they are blue. The ...
1 - University of Mauritius
... Radio Astronomy (related to the Mauritius Radio Telescope), High Energy Physics, Computational Physics and Functional Magnetic Resonance Imaging. ...
... Radio Astronomy (related to the Mauritius Radio Telescope), High Energy Physics, Computational Physics and Functional Magnetic Resonance Imaging. ...
Transcript - Chandra X
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
... Slide 7: More detailed information about the H-R diagram will be presented further along. Since the presentation of the deep sky objects includes their spectral class and luminosity classes, the H-R diagram terminology is given here for those unfamiliar with H-R diagrams. The H-R diagram is a plot ...
NJIT Physics 320: Astronomy and Astrophysics
... Heliocentric planetary model: The Sun is at the center of all planetary motions, except for the Moon which orbits Earth. Under this arrangement the orbital speed of planets decreases steadily outwards, and the outer sphere of fixed stars is truly motionless. In Copernicus' original model the Earth h ...
... Heliocentric planetary model: The Sun is at the center of all planetary motions, except for the Moon which orbits Earth. Under this arrangement the orbital speed of planets decreases steadily outwards, and the outer sphere of fixed stars is truly motionless. In Copernicus' original model the Earth h ...
Astronomy Assignment #1
... This question requires a fairly complete understanding of the celestial coordinate system and the celestial sphere model. According to the last sentence on page 43 “if a star’s declination matches your latitude it will pass over through zenith”. This means that the declination of your zenith is just ...
... This question requires a fairly complete understanding of the celestial coordinate system and the celestial sphere model. According to the last sentence on page 43 “if a star’s declination matches your latitude it will pass over through zenith”. This means that the declination of your zenith is just ...
Earth, Moon, and Sky - Wayne State University
... of its revolution around the Earth with respect to the stars, is 27.3217 days The Moon rotates on its axis in exactly the same time it takes to revolve about the Earth As a consequence, although the Moon does travel around the Earth, the Moon always keeps the same face turned toward the The so-calle ...
... of its revolution around the Earth with respect to the stars, is 27.3217 days The Moon rotates on its axis in exactly the same time it takes to revolve about the Earth As a consequence, although the Moon does travel around the Earth, the Moon always keeps the same face turned toward the The so-calle ...
1 solar and stellar abundances of the elements
... ASTRONOMERS,nuclear physicists, and cosmologists have long sought to determine the "cosmic" abundances of the elements, i.e. the chemical composition of stars and gaseous nebulae in our part of the galaxy. In this contribution we shall be especially concerned with the composition of the sun which pr ...
... ASTRONOMERS,nuclear physicists, and cosmologists have long sought to determine the "cosmic" abundances of the elements, i.e. the chemical composition of stars and gaseous nebulae in our part of the galaxy. In this contribution we shall be especially concerned with the composition of the sun which pr ...
Astrobiological Stoichiometry
... observational spread in [Na/H] within HIP 79672, for example, is *0.1 dex, which greatly exceeds the quoted observational errors for many groups, *0.04 dex. Different groups must be measuring stellar abundances using inconsistent methodologies, since the variation in abundance determinations goes fa ...
... observational spread in [Na/H] within HIP 79672, for example, is *0.1 dex, which greatly exceeds the quoted observational errors for many groups, *0.04 dex. Different groups must be measuring stellar abundances using inconsistent methodologies, since the variation in abundance determinations goes fa ...
Solutions
... by the newly formed OB Association stars that emit most of their energy as high-energy short-wavelength hardUV photons. The photons from the OB Association stars “power up” the HII region and keep it fluorescing. Thus the OB Association forms first and then the HII region is created around the vicin ...
... by the newly formed OB Association stars that emit most of their energy as high-energy short-wavelength hardUV photons. The photons from the OB Association stars “power up” the HII region and keep it fluorescing. Thus the OB Association forms first and then the HII region is created around the vicin ...
Introduction to Astronomy
... Wikimedia Commons http://commons.wikimedia.org/wiki/File:Cosmic_Calendar.png#mediaviewer/File:Cosmic_Calendar.png ...
... Wikimedia Commons http://commons.wikimedia.org/wiki/File:Cosmic_Calendar.png#mediaviewer/File:Cosmic_Calendar.png ...