August Skies
... The source of the Perseid meteor shower is actually debris from the comet SwiftTuttle. Every year, the earth passes through the debris stream left by the comet and the earth's atmosphere incinerates the particles into the glowing embers called meteors or “falling stars”. The shower peaks early after ...
... The source of the Perseid meteor shower is actually debris from the comet SwiftTuttle. Every year, the earth passes through the debris stream left by the comet and the earth's atmosphere incinerates the particles into the glowing embers called meteors or “falling stars”. The shower peaks early after ...
Project 4: The HR diagram. Open clusters
... In order to avoid the complication of using absolute photometry and be less weather‐ dependent we will select clusters with secondary standards, that is, constant stars with reliable values of the B and V magnitudes. As these "secondary standards" will be in the same imag ...
... In order to avoid the complication of using absolute photometry and be less weather‐ dependent we will select clusters with secondary standards, that is, constant stars with reliable values of the B and V magnitudes. As these "secondary standards" will be in the same imag ...
Bessel, Henderson, & Struve—3 Oct
... close one? Bright/faint? Fast/slow? (A fast star is one that moves across the sky a few arc per year. Motion across the sky is called “proper motion.”) A. B. C. ...
... close one? Bright/faint? Fast/slow? (A fast star is one that moves across the sky a few arc per year. Motion across the sky is called “proper motion.”) A. B. C. ...
1) The following questions refer to the HR diagram
... 15) As a group, stars known as main sequence stars on an H-R diagram are best described as being: a. hotter. b. brighter. c. stable. d. larger. 16) Which is the same for all stars along a horizontal line on an HR diagram? (a) temperature (b) diameter (c) mass (d) luminosity ...
... 15) As a group, stars known as main sequence stars on an H-R diagram are best described as being: a. hotter. b. brighter. c. stable. d. larger. 16) Which is the same for all stars along a horizontal line on an HR diagram? (a) temperature (b) diameter (c) mass (d) luminosity ...
TRANSIT
... the rest of the World - Indian, Chinese, Islamic, Celtic, Icelandic (problem - can't see the Moon at some times of the year), Greek, all with different compromises to fit an integer number of solar days into a year, which is a fractional number of days. The complications were astonishing!! Dr Steele ...
... the rest of the World - Indian, Chinese, Islamic, Celtic, Icelandic (problem - can't see the Moon at some times of the year), Greek, all with different compromises to fit an integer number of solar days into a year, which is a fractional number of days. The complications were astonishing!! Dr Steele ...
Lectures 14 & 15 powerpoint (neutron stars & black holes)
... If a GRB occurred only 1,600 ly from Earth, we would be showered with the radiation equivalent to a 10,000 Mt nuclear blast! Possibly every few hundred million years one could occur near enough to Earth for us to be affected. Possibly one of these caused one of the mass extinctions that show up in t ...
... If a GRB occurred only 1,600 ly from Earth, we would be showered with the radiation equivalent to a 10,000 Mt nuclear blast! Possibly every few hundred million years one could occur near enough to Earth for us to be affected. Possibly one of these caused one of the mass extinctions that show up in t ...
1 Introduction - Instituto de Astrofísica de Canarias
... Our Solar System contains four terrestrial planets, and three of them posses a thin atmosphere. Only one, the Earth, has an atmosphere with an important amount of oxygen coexisting with methane, a pair that indicates an essential property of our planet: life. Living beings are all based on the carbo ...
... Our Solar System contains four terrestrial planets, and three of them posses a thin atmosphere. Only one, the Earth, has an atmosphere with an important amount of oxygen coexisting with methane, a pair that indicates an essential property of our planet: life. Living beings are all based on the carbo ...
5th Grade – Topic Model - Bundle 4 Stars and the Solar System
... designed world(s). Support an argument with evidence, data, or a model. ...
... designed world(s). Support an argument with evidence, data, or a model. ...
PC3692: Physics of Stellar Structure (and Evolution)
... magnitude in the Hipparcos passband. The I-band is a filter centred around 8000Å. One striking feature is there is a sequence of stars running from the top left to the bottom right. This sequence is called main sequence. You also see a clump of to the right of the main sequence, these stars are cal ...
... magnitude in the Hipparcos passband. The I-band is a filter centred around 8000Å. One striking feature is there is a sequence of stars running from the top left to the bottom right. This sequence is called main sequence. You also see a clump of to the right of the main sequence, these stars are cal ...
Color-Magnitude Diagram Lab Manual
... 1. Once you have finished collecting data for every star in your cluster, you can turn off the telescope by turning off the Telescope Control Panel. To open the Color-Magnitude Diagram analysis select Tools → HR Diagram Analysis from the top menu. This will load a blue CMD plot. To load your observa ...
... 1. Once you have finished collecting data for every star in your cluster, you can turn off the telescope by turning off the Telescope Control Panel. To open the Color-Magnitude Diagram analysis select Tools → HR Diagram Analysis from the top menu. This will load a blue CMD plot. To load your observa ...
Today`s Powerpoint
... 90% of Matter in Milky Way is Dark Matter Gives off no detectable radiation. Evidence is from rotation curve: ...
... 90% of Matter in Milky Way is Dark Matter Gives off no detectable radiation. Evidence is from rotation curve: ...
Can TMT Image Habitable Planets ?
... Habitable planets can be imaged on ELTs (physics and nature are on our side) ELTs can operate at ~1e-5/1e-6 raw contrast and photon-noise limited detection limit → characterization (spectroscopy) of 1e-8 habitable planets accessible around dozens of nearby stars, mainly near-IR/visible Ideal targets ...
... Habitable planets can be imaged on ELTs (physics and nature are on our side) ELTs can operate at ~1e-5/1e-6 raw contrast and photon-noise limited detection limit → characterization (spectroscopy) of 1e-8 habitable planets accessible around dozens of nearby stars, mainly near-IR/visible Ideal targets ...
doc - Pocket Stars
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
... are performed for proper motions and parallax. Planet ephemeris data from Jet Propulsion Laboratory using the DE405 database. DE405 is JPL’s latest planetary ephemeris with correction for both nutations and librations. DE405 uses the J2000 International Celestial Reference Frame (ICRF). The portion ...
Class 1 and 2 lecture slides (Solar System Formation)
... 2:1 resonance; b) scattering of planetesimals into the inner Solar System after the orbital shift of Neptune (dark blue) and Uranus (light blue); c) after ejection of planetesimals by planets. Simulation showing the outer planets and theKuiper belt: a) Before Jupiter–Saturn 2:1 resonance. b) Scatter ...
... 2:1 resonance; b) scattering of planetesimals into the inner Solar System after the orbital shift of Neptune (dark blue) and Uranus (light blue); c) after ejection of planetesimals by planets. Simulation showing the outer planets and theKuiper belt: a) Before Jupiter–Saturn 2:1 resonance. b) Scatter ...
Extreme Optics and the Search for Earth-Like Planets
... • Are there Earth-like planets? • Are they common? • Is there life on some of them? ...
... • Are there Earth-like planets? • Are they common? • Is there life on some of them? ...
Lecture 15 Star Formation and Evolution 3/7
... about 100,000,000 degrees K for He burning Stars like our Sun remain main sequence longer due to this PHYS 162 ...
... about 100,000,000 degrees K for He burning Stars like our Sun remain main sequence longer due to this PHYS 162 ...
Chapter 2 Astronomy Notes
... (2) A "dwarf planet" is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satell ...
... (2) A "dwarf planet" is a celestial body that: (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satell ...
