PHY216_lect1_2014 - Astrophysics Research Institute
... set in the west. The hour angle tells you how long it will be before the star transits (or how much time has passed since it transited!) • Hour Angle - angle between a star's current position and the meridian (measured WESTWARD in hours, where 1 hour is equivalent to 15 degrees – because 24 hours = ...
... set in the west. The hour angle tells you how long it will be before the star transits (or how much time has passed since it transited!) • Hour Angle - angle between a star's current position and the meridian (measured WESTWARD in hours, where 1 hour is equivalent to 15 degrees – because 24 hours = ...
AY1 Homework for Quiz 2: Spring 2017
... 8. The Solar luminosity at the Earth is 3.9 × 1033 ergs/sec. What is it at the distance of Jupiter (5 AU or 5 times the distance from the Sun compared to Earth)? ...
... 8. The Solar luminosity at the Earth is 3.9 × 1033 ergs/sec. What is it at the distance of Jupiter (5 AU or 5 times the distance from the Sun compared to Earth)? ...
Chapter 09 - The Independent School
... Star appears slightly shifted from different positions of the Earth on its orbit The farther away the star is (larger d), the smaller the parallax angle p. ...
... Star appears slightly shifted from different positions of the Earth on its orbit The farther away the star is (larger d), the smaller the parallax angle p. ...
Compa ring between Spectroscopic and Photometric Method for
... This is the most popular and accessible method in astronomy. Photometry is the measurement of the intensity of electromagnetic radiation usually expressed in apparent magnitude. Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the ...
... This is the most popular and accessible method in astronomy. Photometry is the measurement of the intensity of electromagnetic radiation usually expressed in apparent magnitude. Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the ...
MAUI STARGAZING MAY OBSERVING LIST DEEP SPACE
... night sky from Planet Earth. Hipparchos, introduced the magnitude scale in the 1st century B.C.. ASTERISMS - An asterism is an informal pattern of stars recognized in the Earth's night sky. It may be part of an official constellation or it may be composed of stars from more than one constellation. C ...
... night sky from Planet Earth. Hipparchos, introduced the magnitude scale in the 1st century B.C.. ASTERISMS - An asterism is an informal pattern of stars recognized in the Earth's night sky. It may be part of an official constellation or it may be composed of stars from more than one constellation. C ...
H. Other Methods of Determining Stellar Distances
... light-years and in parsecs? • Easy Solution: 1 / 0.385 = 2.60 parsecs; ...
... light-years and in parsecs? • Easy Solution: 1 / 0.385 = 2.60 parsecs; ...
HISTORY OF ASTRONOMY Largely on the basis of
... moved eastward about one degree a day against the background of the stars, until in the course of a year it had completely traversed the 360 degree path of constellations that came to be known as the ZODIAC. The planets generally also moved eastward along the zodiac, with 8 degrees of the Sun's appa ...
... moved eastward about one degree a day against the background of the stars, until in the course of a year it had completely traversed the 360 degree path of constellations that came to be known as the ZODIAC. The planets generally also moved eastward along the zodiac, with 8 degrees of the Sun's appa ...
Lecture 2 - University of Chicago, Astronomy
... all, he wrote it in his native language, Italian, rather in the scholar language of the day, Latin. Had he done otherwise, me may have been using a Latin textbook for this class! However, his most important contribution was perhaps not in Astronomy, but in Mechanics. If the sky contradicted the Ptol ...
... all, he wrote it in his native language, Italian, rather in the scholar language of the day, Latin. Had he done otherwise, me may have been using a Latin textbook for this class! However, his most important contribution was perhaps not in Astronomy, but in Mechanics. If the sky contradicted the Ptol ...
Electromagnetic Radiation from the Sun
... 6. Why is information about many stars contained in absorption rather than emission spectra? If there is a cloud of gas at a cooler temperature directly between a denser source producing a continuous spectrum (i.e. a star) and a telescope, the gas will absorb light at specific wavelengths that are ...
... 6. Why is information about many stars contained in absorption rather than emission spectra? If there is a cloud of gas at a cooler temperature directly between a denser source producing a continuous spectrum (i.e. a star) and a telescope, the gas will absorb light at specific wavelengths that are ...
Fingerprints in Starlight: Spectroscopy of Stars Inquiry Questions
... atoms in cool stars only have electrons in the ground state. Very hot stars contain hydrogen that that is either ionized or with electrons excited to higher energy levels. In both cases the stars will have weak Balmer absorption lines. 6. Why is information about many stars contained in absorption ...
... atoms in cool stars only have electrons in the ground state. Very hot stars contain hydrogen that that is either ionized or with electrons excited to higher energy levels. In both cases the stars will have weak Balmer absorption lines. 6. Why is information about many stars contained in absorption ...
1) Data from a Doppler analysis of the sun show a red shift on the
... 2) Scientists use spectrographs to determine the composition of distant stars and galaxies. The spacing of dark lines on the spectrum is unique to each element. Relative motion of these stars and galaxies can be studied by observing the location of the dark lines. Below are examples of hydrogen spec ...
... 2) Scientists use spectrographs to determine the composition of distant stars and galaxies. The spacing of dark lines on the spectrum is unique to each element. Relative motion of these stars and galaxies can be studied by observing the location of the dark lines. Below are examples of hydrogen spec ...
William Borucki
... their host star to temperatures to those as cold as -70C. One object appears to be so hot that it is leaving a tail of evaporated material stretching half way around its orbit. Dozens of planetary candidates in the habitable zone have been found. Eight have been confirmed; one is in the HZ of a bina ...
... their host star to temperatures to those as cold as -70C. One object appears to be so hot that it is leaving a tail of evaporated material stretching half way around its orbit. Dozens of planetary candidates in the habitable zone have been found. Eight have been confirmed; one is in the HZ of a bina ...
Sample multiple choice questions for Exam 2
... b) wrong: Most are intrinsically bright and lie far from the Sun. c) wrong: Close means closer than 1 parsec. d) wrong: This is true only for green stars. e) wrong: Both changes c) and d) are needed. 2. Stars with the mass of our Sun produce energy primarily by the ________while they are on the main ...
... b) wrong: Most are intrinsically bright and lie far from the Sun. c) wrong: Close means closer than 1 parsec. d) wrong: This is true only for green stars. e) wrong: Both changes c) and d) are needed. 2. Stars with the mass of our Sun produce energy primarily by the ________while they are on the main ...
Galaxies - C. Levesque
... • Our star is now in what is called the main sequence where it is stable and consistent. • A cooler smaller star like our sun can last for about 8 billion years • Fast burning blue stars only last for a million years ...
... • Our star is now in what is called the main sequence where it is stable and consistent. • A cooler smaller star like our sun can last for about 8 billion years • Fast burning blue stars only last for a million years ...
Document
... ALL of the stars create Helium from fusing together two Hydrogen nuclei. Low Mass Stars ...
... ALL of the stars create Helium from fusing together two Hydrogen nuclei. Low Mass Stars ...
Lecture103002
... there is an extra credit assignment available on the course website due Fri. Nov. 1 at 5pm scores from the first exam and first 7 quizzes are available through Blackboard do not pay any attention to “Total Score” ...
... there is an extra credit assignment available on the course website due Fri. Nov. 1 at 5pm scores from the first exam and first 7 quizzes are available through Blackboard do not pay any attention to “Total Score” ...
Slide 1
... --Electrons squeezed into protons make neutrons. --Gravity sufficient to make neutrons 'touch'. --10's of km in diameter with some surface electrons. ...
... --Electrons squeezed into protons make neutrons. --Gravity sufficient to make neutrons 'touch'. --10's of km in diameter with some surface electrons. ...
Name: Period : _____ Bulldog Review #9 1. The Milky Wa
... state of technology, what would be the best equipment for these scientists to use to obtain the most detailed data about Saturn’s atmosphere? A. Space probe B. Manned spaceflight C. Telescope from Earth D. Satellite orbiting Earth Use the chart below to answer questions 15 – 17. Stage 1: Gravity pul ...
... state of technology, what would be the best equipment for these scientists to use to obtain the most detailed data about Saturn’s atmosphere? A. Space probe B. Manned spaceflight C. Telescope from Earth D. Satellite orbiting Earth Use the chart below to answer questions 15 – 17. Stage 1: Gravity pul ...
Gaia talk
... • One must have a physical model and understanding of every contribution to the error budget at an appropriate level • Einstein light bending at the Sun’s edge is 1,750,000 microarcsec • One mu-as is the limit to which we have tested GR… • For Gaia the spin rate is controlled to 15 ppm • The spacecr ...
... • One must have a physical model and understanding of every contribution to the error budget at an appropriate level • Einstein light bending at the Sun’s edge is 1,750,000 microarcsec • One mu-as is the limit to which we have tested GR… • For Gaia the spin rate is controlled to 15 ppm • The spacecr ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.