Export To Word
... Collect all of the completed work and other materials from each group (H-R Diagram, Response Letter, Guiding Questions, Data Chart 1). These will be graded by the teacher at a later time (note: do not grade the H-R Diagram until the students have completed the full MEA parts 1 and 2). Using the ...
... Collect all of the completed work and other materials from each group (H-R Diagram, Response Letter, Guiding Questions, Data Chart 1). These will be graded by the teacher at a later time (note: do not grade the H-R Diagram until the students have completed the full MEA parts 1 and 2). Using the ...
Continuous Spectrum—Kirchoff`s First Law
... Many stars that appear single to the eye are actually multiple star systems. That is, there are two (or sometimes more) stars, bound together by gravity, orbiting each other in elliptical orbits. Visual binaries, which can be seen in the telescope as two separate stars, are especially useful to astr ...
... Many stars that appear single to the eye are actually multiple star systems. That is, there are two (or sometimes more) stars, bound together by gravity, orbiting each other in elliptical orbits. Visual binaries, which can be seen in the telescope as two separate stars, are especially useful to astr ...
Annual report 2004 - Département d`Astrophysique, Géophysique et
... challenge for current evolution scenarios in close binaries and it is also a puzzle how a massive binary with such a large eccentricity could have formed in the first place. Both the primary and the secondary exhibit line-profile variations. A period analysis performed on the radial velocity variati ...
... challenge for current evolution scenarios in close binaries and it is also a puzzle how a massive binary with such a large eccentricity could have formed in the first place. Both the primary and the secondary exhibit line-profile variations. A period analysis performed on the radial velocity variati ...
Star Map - Science Centre
... The Big Dipper is one of the most famous asterisms (star patterns) throughout history. In some places of the Northern Hemisphere, its seven brightest stars can be seen all year round. Further South near the equator, it is only visible for a few months. Merak and Dubhe are known as The Pointers, poin ...
... The Big Dipper is one of the most famous asterisms (star patterns) throughout history. In some places of the Northern Hemisphere, its seven brightest stars can be seen all year round. Further South near the equator, it is only visible for a few months. Merak and Dubhe are known as The Pointers, poin ...
Part I: Shining a Light on Visual Magnitude
... We need to first understand visual magnitude (vMag). When a telescope or sensor looks up at the sky, the brightness of the objects it’s looking at is called apparent magnitude. If we’re only considering what the human eye can see, then we’re measuring visual magnitude. This is a relative measurement ...
... We need to first understand visual magnitude (vMag). When a telescope or sensor looks up at the sky, the brightness of the objects it’s looking at is called apparent magnitude. If we’re only considering what the human eye can see, then we’re measuring visual magnitude. This is a relative measurement ...
Stellar Masses
... In 2001, a very low mass star (lower than a tenth of a solar mass), located at a distance of only 13 light years, designated as DENIS-P J104814.7-395606.1, was found on the infrared survey DENIS images. On the night of 30 May 2000, the 10 m Keck I telescope was used to obtain a high-resolution spect ...
... In 2001, a very low mass star (lower than a tenth of a solar mass), located at a distance of only 13 light years, designated as DENIS-P J104814.7-395606.1, was found on the infrared survey DENIS images. On the night of 30 May 2000, the 10 m Keck I telescope was used to obtain a high-resolution spect ...
Ch 11a (Measuring Stars 10-28-10)
... Distance: If you know the parallax “p” (in arcseconds) you can calculate the distance “d” (in parsecs) d=1/p (1parsec= 3.26 lightyears) Apparent brightness: how bright a star looks in the sky The inverse-square Law: light from stars gets fainter as the inverse square of the distance (apparent bri ...
... Distance: If you know the parallax “p” (in arcseconds) you can calculate the distance “d” (in parsecs) d=1/p (1parsec= 3.26 lightyears) Apparent brightness: how bright a star looks in the sky The inverse-square Law: light from stars gets fainter as the inverse square of the distance (apparent bri ...
chapter 24 instructor notes
... In 1837 Argelander, of the Bonn Observatory and orginator of the BD catalogue, was able to derive an apex for the solar motion from studying stellar proper motions. His result is very similar to that recognized today. Also in 1837, Frederick Struve found evidence for interstellar extinction in star ...
... In 1837 Argelander, of the Bonn Observatory and orginator of the BD catalogue, was able to derive an apex for the solar motion from studying stellar proper motions. His result is very similar to that recognized today. Also in 1837, Frederick Struve found evidence for interstellar extinction in star ...
Introduction: The History and Technique of Stellar Classification
... von Fraunhofer early in the 1800’s, but it was not until late in that century that astronomers were able to routinely examine the spectra of stars in large numbers. Astronomers Angelo Secchi and E.C. Pickering were among the first to note that stellar spectra could be divided into groups by their ge ...
... von Fraunhofer early in the 1800’s, but it was not until late in that century that astronomers were able to routinely examine the spectra of stars in large numbers. Astronomers Angelo Secchi and E.C. Pickering were among the first to note that stellar spectra could be divided into groups by their ge ...
PowerPoint Presentation - 16. Properties of Stars
... • What are Cepheid variable stars and why are they important to astronomers? • A Cepheid variable is a type of very luminous pulsating variable star that follows a period–luminosity relation, which means we can calculate its luminosity by measuring its pulsation period. Once we know a Cepheid’s lumi ...
... • What are Cepheid variable stars and why are they important to astronomers? • A Cepheid variable is a type of very luminous pulsating variable star that follows a period–luminosity relation, which means we can calculate its luminosity by measuring its pulsation period. Once we know a Cepheid’s lumi ...
Flatfielding chapter for Calibration Volumes
... advantages to the RoF. First, high frequency flat fielding can be done routinely and quickly. Second, the RoF incorporates lamp sources with well-calibrated irradiance that are monitored by NIST-calibrated photodiodes. The RoF thus provides an accurate absolute flux scale for the SNAP photometry. Th ...
... advantages to the RoF. First, high frequency flat fielding can be done routinely and quickly. Second, the RoF incorporates lamp sources with well-calibrated irradiance that are monitored by NIST-calibrated photodiodes. The RoF thus provides an accurate absolute flux scale for the SNAP photometry. Th ...
Rotation Periods of Wide Binaries in the Kepler Field
... There are at least 6 proper motion catalogs covering stars in the Kepler field that might be of help to identify CPM stars in this region: The USNO-B catalog (Monet, et al. 2003), the UCAC-4 catalog (Zacharias, et al. 2013), the URAT-1 catalog (Zacharias, et al. 2015), the Hipparcos/Tycho catalogs ( ...
... There are at least 6 proper motion catalogs covering stars in the Kepler field that might be of help to identify CPM stars in this region: The USNO-B catalog (Monet, et al. 2003), the UCAC-4 catalog (Zacharias, et al. 2013), the URAT-1 catalog (Zacharias, et al. 2015), the Hipparcos/Tycho catalogs ( ...
Seeds of a Tychonic Revolution: Telescopic Observations of the
... immense beyond reason – even infinite if the universe is infinite. The Earth, not the stars, must be what rotates daily. Mareo's systematic observations of the stars seem to be backing a Copernican (or Diggesian) world system – until he makes another discovery: A star that appears to be a single sta ...
... immense beyond reason – even infinite if the universe is infinite. The Earth, not the stars, must be what rotates daily. Mareo's systematic observations of the stars seem to be backing a Copernican (or Diggesian) world system – until he makes another discovery: A star that appears to be a single sta ...
B LOG - Science Centre
... although it had a variety of meanings in many cultures. Most common is that of a bear or a ladle/dipper used for scooping water. Other representations include a plough, an ox or horse pulling a plough and three mourners standing beside a funeral pyre. The names of the stars come from Arabic phrases ...
... although it had a variety of meanings in many cultures. Most common is that of a bear or a ladle/dipper used for scooping water. Other representations include a plough, an ox or horse pulling a plough and three mourners standing beside a funeral pyre. The names of the stars come from Arabic phrases ...
The Pleiades in the Salle des Taureaux", Grotte de Lascaux
... The six stars and the Aurochs: markers of the start of spring 17300 years ago. It is highly probable that the Pleiades, Hyades and the Bull must have marked a special point at the ecliptic at the time when the cave paintings of Lascaux came into being. Such points could be the equinoxes and solstice ...
... The six stars and the Aurochs: markers of the start of spring 17300 years ago. It is highly probable that the Pleiades, Hyades and the Bull must have marked a special point at the ecliptic at the time when the cave paintings of Lascaux came into being. Such points could be the equinoxes and solstice ...
Coordinate Systems - AST 114, Astronomy Lab II for Spring 2017!
... Historically various countries established their own zero point of longitude, which is given the name: zero meridian. National observatories were established in Paris, London, Berlin, Leningrad, Madrid, and other major capitols with the purpose of determining longitude. By 1889, through internationa ...
... Historically various countries established their own zero point of longitude, which is given the name: zero meridian. National observatories were established in Paris, London, Berlin, Leningrad, Madrid, and other major capitols with the purpose of determining longitude. By 1889, through internationa ...
LET THE STARS GET IN YOUR EYES SKY MOTIONS
... Stars come in all sizes and colors. Betelgeuse in Orion is one of the largest stars known. It is over 800 times larger than our Sun. The smallest visible stars are white dwarfs which are about the size of the Earth. Neutron stars are about the size of a city but are only detected by radio waves. Our ...
... Stars come in all sizes and colors. Betelgeuse in Orion is one of the largest stars known. It is over 800 times larger than our Sun. The smallest visible stars are white dwarfs which are about the size of the Earth. Neutron stars are about the size of a city but are only detected by radio waves. Our ...
Standards
... Wavelength activity – students will become familiar with properties of waves, such as wavelength, frequency, and amplitude. Spectroscope activity - facilitates developing the relationship between temperature and color of stars. Star Characteristic Card Match and discussion of characteristics This ac ...
... Wavelength activity – students will become familiar with properties of waves, such as wavelength, frequency, and amplitude. Spectroscope activity - facilitates developing the relationship between temperature and color of stars. Star Characteristic Card Match and discussion of characteristics This ac ...
Searching for RR Lyrae Stars in M15
... source was located 10 parsecs away from us. The distance modulus helps in determining distances and magnitudes to various objects. This very convenient for us since RR Lyrae stars have an average absolute magnitude of ∼0.5. The reason for this shared absolute magnitude is that RR Lyrae stars, in any ...
... source was located 10 parsecs away from us. The distance modulus helps in determining distances and magnitudes to various objects. This very convenient for us since RR Lyrae stars have an average absolute magnitude of ∼0.5. The reason for this shared absolute magnitude is that RR Lyrae stars, in any ...
Astronomy 112: The Physics of Stars Class 19 Notes: The Stellar
... would just have properties given by the sum of the two bursts. From there, however, it is clear that we can generalize even further and consider an arbitrary star formation history, i.e. we consider an object within which the star formation rate is a specified function Ṁ (t), where t is a negative ...
... would just have properties given by the sum of the two bursts. From there, however, it is clear that we can generalize even further and consider an arbitrary star formation history, i.e. we consider an object within which the star formation rate is a specified function Ṁ (t), where t is a negative ...
Lab PDF - NMSU Astronomy
... regardless of their luminosity or surface temperature, will lie along this line. In which corner of the diagram (upper right, upper left, lower right, or lower left) would stars with radii 1000 times larger than that of the Sun be plotted? In which corner would stars with radii 1000 times smaller th ...
... regardless of their luminosity or surface temperature, will lie along this line. In which corner of the diagram (upper right, upper left, lower right, or lower left) would stars with radii 1000 times larger than that of the Sun be plotted? In which corner would stars with radii 1000 times smaller th ...
Lecture 14
... • Parallax precision p ~ 10-5 arcsec for 1 billion stars – 100x better parallaxes – 10,000x more stars – Stars that are ~100 times fainter than Hipparcos ...
... • Parallax precision p ~ 10-5 arcsec for 1 billion stars – 100x better parallaxes – 10,000x more stars – Stars that are ~100 times fainter than Hipparcos ...
Eclipsing Binary Stars as Astrophysical Laboratories
... you some of the research that students and I are doing here at Juniata College on eclipsing binary star systems. My research interests lie in observational astronomy. Students and I work at telescopes taking images and observing the stars themselves. When we look at the night sky, I think most peopl ...
... you some of the research that students and I are doing here at Juniata College on eclipsing binary star systems. My research interests lie in observational astronomy. Students and I work at telescopes taking images and observing the stars themselves. When we look at the night sky, I think most peopl ...
Discovery of extremely lead-rich subdwarfs: does heavy metal signal
... Hot subdwarfs represent a group of low-mass helium-burning stars formed through binarystar interactions and include some of the most chemically peculiar stars in the Galaxy. Stellar evolution theory suggests that they should have helium-rich atmospheres but, because radiation causes hydrogen to diff ...
... Hot subdwarfs represent a group of low-mass helium-burning stars formed through binarystar interactions and include some of the most chemically peculiar stars in the Galaxy. Stellar evolution theory suggests that they should have helium-rich atmospheres but, because radiation causes hydrogen to diff ...
Star catalogue
A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.Completeness and accuracy is described by the weakest apparent magnitude V (largest number) and the accuracy of the positions.