'Rr lyrae' diaporamas de présentation

Constraining the Helium Abundance in Globular Clusters

888 views • 78 slides

ASTR 1102-002 2008 Fall Semester

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KIAA Lectures Beijing, July 2010 Ken Freeman, RSAA, ANU

KIAA Lectures Beijing, July 2010 Ken Freeman, RSAA, ANU. Lecture 4: stellar data - sources and techniques. Stellar data : the data needed for galactic archaeology and fossil recovery. What are we trying to do:

590 views • 44 slides

National Science Olympiad

National Science Olympiad. Astronomy 2019 (Division C) Stellar Evolution in Normal & Starburst Galaxies. NASA Universe of Learning/CXC/NSO. https://www.universe-of-learning.org/ http://chandra.harvard.edu/index.html. Chandra X-Ray Observatory. http://chandra.harvard.edu/edu/olympiad.html.

573 views • 37 slides

The Milky Way Galaxy

The Milky Way Galaxy. Our Parent Galaxy. From Earth, we see few stars when looking out of galaxy (red arrows), many when looking in (blue and white arrows). Milky Way is how our Galaxy appears in the night sky (b).

555 views • 35 slides

Gaia Unravelling the chemical and dynamical history of our galaxy

Gaia Unravelling the chemical and dynamical history of our galaxy. C. Cacciari - SAIt 2008, Teramo. GAIA = all-sky astrometric survey ? follow up of Hipparcos (+ photometry + radial velocities) A brief history of astrometric accuracy.

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ka (

Ga. la. xy pr. & ov. Lo ed. ca b. l y. Un HS. iv C. er. se. Yu. ta. ka (. NA. Ko OJ. mi ). ya. ma. I. nt. ro. du. ct. io. n. Hyper Suprime-Cam. Hyper Suprime-Cam (HSC) Next generation wide-field CCD Camera

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ka (

Ga. la. xy pr. & ov. Lo ed. ca b. l y. Un HS. iv C. er. se. Yu. ta. ka (. NA. Ko OJ. mi ). ya. ma. I. nt. ro. du. ct. io. n. Hyper Suprime-Cam. Hyper Suprime-Cam (HSC) Next generation wide-field CCD Camera

561 views • 35 slides

Gaia Unravelling the chemical and dynamical history of our galaxy

Gaia Unravelling the chemical and dynamical history of our galaxy. C. Cacciari - SAIt 2008, Teramo. GAIA = all-sky astrometric survey ? follow up of Hipparcos (+ photometry + radial velocities) A brief history of astrometric accuracy.

473 views • 35 slides

Department of Astronomy Beijing Normal University

Frequency analysis of RR Lyrae stars in the LMC. Bingqiu Chen & Biwei Jiang Beijing Normal University 2010.4. Department of Astronomy Beijing Normal University. Overview. Introduction The data & the method of analysis Variable classification Conclusion Discussion. RR Lyrae stars:

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Review: The life of Stars

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THE EXTRAGALACTIC DISTANCE SCALE

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Reddening and Extinction

Reddening and Extinction. The discovery of the dust is relatively recent. In 1930 R.J. Trumpler (lived 1886--1956) plotted the angular diameter of star clusters vs. the distance to the clusters. Discovery of Dust by Trumpler.

502 views • 23 slides

How to really describe the variable sky

Hotwiring III, Santa Fe. How to really describe the variable sky. Matthew J. Graham, CACR, Caltech. Nov 15, 2013. The Variable Sky: CRTS DR2. Covers 33000 sq. deg. (0 < RA < 360, -75 < Dec < 70). Calibrated photometry for 500 million objects (> 90 billion data points)

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The H-R Diagram

The H-R Diagram. In 1913, the American astronomer Henry Russel plotted the luminosities of stars versus their spectra class (related to the temperature). Similar to work done in 1911 by Danish astronomer Ejnar Hertzsprung They found that the luminosities and temperatures of star are related

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Special Stars

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Special Stars

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Variable Stars of Globular Clusters in the Large Magellanic Cloud

Variable Stars of Globular Clusters in the Large Magellanic Cloud. Evan McClellan (FSU) Horace Smith (advisor) (MSU) Charles Kuehn (MSU) August 6 th , 2008. Outline. Background- RR Lyrae Variables The Hertzsprung-Russell diagram Globular Clusters Satellite Galaxies Galaxy Formation

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Review: The life of Stars

267 views • 15 slides

KV Cnc : an RR Lyrae with Irregular Blazhko Effect

274 views • 11 slides