Herbig Ae/Be Stars
... • Why are there so few of these objects? • Perhaps stars evolve quickly through this region? ...
... • Why are there so few of these objects? • Perhaps stars evolve quickly through this region? ...
Lab Writeup
... eyepiece of our refractor telescopes. At least two eyepieces will be used. The first will have a fairly large field of view. The second will have higher magnification, and has a scale which allows you to fairly accurately measure small angles. The focal length of the Orion 80 “short tube” refractor ...
... eyepiece of our refractor telescopes. At least two eyepieces will be used. The first will have a fairly large field of view. The second will have higher magnification, and has a scale which allows you to fairly accurately measure small angles. The focal length of the Orion 80 “short tube” refractor ...
Lecture 3
... spiral galaxy composed of about 100 billion stars. • There are only about 6000 stars that you can see with the unaided eye -- not even the tip of the iceberg. • At a dark site, you can see a diffuse glow tracing and arc across the sky. This is the Milky Way and our galaxy is sometimes referred to as ...
... spiral galaxy composed of about 100 billion stars. • There are only about 6000 stars that you can see with the unaided eye -- not even the tip of the iceberg. • At a dark site, you can see a diffuse glow tracing and arc across the sky. This is the Milky Way and our galaxy is sometimes referred to as ...
Unit 13―The “Fixed” Stars
... called telescopic and those that can be visible to the unaided eye are called lucid. (Have you ever heard someone state, “Now let me make this lucidly clear?”) As soon as telescopes started making more and more stars visible it became clear that 5,000 stars per hemisphere wasn’t even close to “the t ...
... called telescopic and those that can be visible to the unaided eye are called lucid. (Have you ever heard someone state, “Now let me make this lucidly clear?”) As soon as telescopes started making more and more stars visible it became clear that 5,000 stars per hemisphere wasn’t even close to “the t ...
harrold_kajubi_astro1
... Very large uncertainty incurred through by-hand photometry (note B-V scales do not match) Spread resembles asymptotic (red) giant branches No evidence of main sequence Better photometry is needed to: Verify distance modulus from main sequence shift Verify cluster age from turn-off point ...
... Very large uncertainty incurred through by-hand photometry (note B-V scales do not match) Spread resembles asymptotic (red) giant branches No evidence of main sequence Better photometry is needed to: Verify distance modulus from main sequence shift Verify cluster age from turn-off point ...
A-level Physics (Specification A) Teacher guide Teacher guide
... In the first chapter, students see how some of the optics topics they have studied earlier in the specification are applied to the design of telescopes. The relative merits of the two basic methods – reflecting and refracting – are discussed as well as the influence the design of the telescopes has ...
... In the first chapter, students see how some of the optics topics they have studied earlier in the specification are applied to the design of telescopes. The relative merits of the two basic methods – reflecting and refracting – are discussed as well as the influence the design of the telescopes has ...
Lecture19
... Black holes are invisible, but the material around them isn’t! As material is sucked down onto a black hole (from a mass losing binary companion, for instance), it emits strong X-rays. Objects can happily orbit a black hole; only when they get close are they in trouble. It does not “suck everything ...
... Black holes are invisible, but the material around them isn’t! As material is sucked down onto a black hole (from a mass losing binary companion, for instance), it emits strong X-rays. Objects can happily orbit a black hole; only when they get close are they in trouble. It does not “suck everything ...
Part I: Shining a Light on Visual Magnitude
... We don’t have to use Vega or another incredibly bright well calibrated celestial target. In cases where we may not have an ideal calibration reference near our intended target object we can repeat the steps with another star that does happens to be within our field of view or at least nearby our obj ...
... We don’t have to use Vega or another incredibly bright well calibrated celestial target. In cases where we may not have an ideal calibration reference near our intended target object we can repeat the steps with another star that does happens to be within our field of view or at least nearby our obj ...
Main Types of Galaxies
... • Our galaxy, Milky Way, is a spiral galaxy. • Our solar system is located in one of the spiral arms. ...
... • Our galaxy, Milky Way, is a spiral galaxy. • Our solar system is located in one of the spiral arms. ...
ISP205L, Week 13 Computer Lab Activity The Distance to the Pleiades
... where m = the apparent magnitude, M = the absolute magnitude, and d = the distance in parsecs. At long last, equation (8) is the one that we need for this lab exercise. 4. Back to the Pleiades For the lab exercise we are going to give you an H-R diagram that plots the absolute magnitudes (M) of stan ...
... where m = the apparent magnitude, M = the absolute magnitude, and d = the distance in parsecs. At long last, equation (8) is the one that we need for this lab exercise. 4. Back to the Pleiades For the lab exercise we are going to give you an H-R diagram that plots the absolute magnitudes (M) of stan ...
Structure of the solar system
... Earth (A), its lines will be blue-shifted. As they two stars are moving horizontally with respect to the Earth, the spectral lines are normal. Then B moves towards Earth and A moves away. The spectral lines move apart then come together twice per revolution. See the simplified animation ...
... Earth (A), its lines will be blue-shifted. As they two stars are moving horizontally with respect to the Earth, the spectral lines are normal. Then B moves towards Earth and A moves away. The spectral lines move apart then come together twice per revolution. See the simplified animation ...
iaf2001_paper (doc - 1.8 MB)
... the observation sequences and the pre-processing of the scientific data will be done by the COROT Mission Center, located in Toulouse and having interfaces with the laboratories. A dedicated automatic S band ground station will be used for communication with the satellite. Located at Villafranca (Sp ...
... the observation sequences and the pre-processing of the scientific data will be done by the COROT Mission Center, located in Toulouse and having interfaces with the laboratories. A dedicated automatic S band ground station will be used for communication with the satellite. Located at Villafranca (Sp ...
Star_Clusters
... Stellar densities in GCs can me much higher than in the Solar vicinity – normally 1000 stars per cubic pc in the cores of most GCs, but 106 stars per cubic pc in clusters with collapsed cores ...
... Stellar densities in GCs can me much higher than in the Solar vicinity – normally 1000 stars per cubic pc in the cores of most GCs, but 106 stars per cubic pc in clusters with collapsed cores ...
Modified True/False - Indicate whether the statement is true or false
... ____ 21. HS-ESS1-1 Which of the following stages is the earliest in the development of a star? a. Nebula c. Neutron star b. Protostar d. Giant ____ 22. HS-ESS1-1 All stars, including the Sun, have the following identical composition: a. 73 percent hydrogen; 25 percent helium; and 2 percent oxygen b. ...
... ____ 21. HS-ESS1-1 Which of the following stages is the earliest in the development of a star? a. Nebula c. Neutron star b. Protostar d. Giant ____ 22. HS-ESS1-1 All stars, including the Sun, have the following identical composition: a. 73 percent hydrogen; 25 percent helium; and 2 percent oxygen b. ...
Document
... • Bright (V ~ 21 at 110 kpc) • Variable stars (P ~ 0.6 day) with distinct light curves ( ~1 mag amplitude) → easily identifiable ...
... • Bright (V ~ 21 at 110 kpc) • Variable stars (P ~ 0.6 day) with distinct light curves ( ~1 mag amplitude) → easily identifiable ...
September 2011 - Newbury Astronomical Society
... The first thing to consider is getting comfortable for observing. All the usual advice given to beginners to astronomy applies. That is: dress to keep warm, make yourself comfortable and avoid lights that shine directly into your face. Little needs to be said about dressing to keep warm except to st ...
... The first thing to consider is getting comfortable for observing. All the usual advice given to beginners to astronomy applies. That is: dress to keep warm, make yourself comfortable and avoid lights that shine directly into your face. Little needs to be said about dressing to keep warm except to st ...
Why Star Positions?
... from someone, and focus on the end of one hair on their head. Hair grows at about one centimeter a One thousandth of a second month, so that in one second when viewed from this of arc, viewed from Europe distance, their hair has lengthened by an angle of one thousandth of a second of arc. Building a ...
... from someone, and focus on the end of one hair on their head. Hair grows at about one centimeter a One thousandth of a second month, so that in one second when viewed from this of arc, viewed from Europe distance, their hair has lengthened by an angle of one thousandth of a second of arc. Building a ...
Oscillating White Dwarf Stars Background on White Dwarfs
... Example: DBAQ4 = Star showing He I, H, and C features (in order of decreasing strength) near Teff=12.600 K ...
... Example: DBAQ4 = Star showing He I, H, and C features (in order of decreasing strength) near Teff=12.600 K ...
Geoscience Astronomy Formative on Stellar Evolution and
... 22. What will be the final stage in the sun’s life cycle? a. white dwarf c. planetary nebula b. red giant d. black dwarf 23. Our galaxy is called the ____. a. Local Group c. Andromeda b. Orion d. Milky Way 24. Which of the following is NOT a type of galaxy? a. nebular c. spiral b. irregular d. ellip ...
... 22. What will be the final stage in the sun’s life cycle? a. white dwarf c. planetary nebula b. red giant d. black dwarf 23. Our galaxy is called the ____. a. Local Group c. Andromeda b. Orion d. Milky Way 24. Which of the following is NOT a type of galaxy? a. nebular c. spiral b. irregular d. ellip ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.