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Measuring the Hubble Constant

Measuring the Hubble Constant

Measuring the Hubble Constant. The Scale of the Universe I: The Solar System. Pluto is 5.913 billion km (39.53 AU) from the Sun. The Oort cloud extends much further than this: out to around 100,000 AU or about 2 ly . The next closest star, Alpha Centauri, is 4.2ly away. 1ly=9.46 x 10 12 km.

By Albert_Lan
(228 views)

ASTR 1102-002 2008 Fall Semester

ASTR 1102-002 2008 Fall Semester

ASTR 1102-002 2008 Fall Semester. Joel E. Tohline, Alumni Professor Office: 247 Nicholson Hall [Slides from Lecture21]. Chapter 24 : Galaxies and Chapter 26: Cosmology. Individual Galaxies. Location in Space Coordinate (angular) position on the sky Distance from Earth

By alta
(294 views)

The Calán / Tololo Supernova Survey

The Calán / Tololo Supernova Survey

The Calán / Tololo Supernova Survey. Mark M. Phillips Carnegie Observatories. Type Ia Supernovae ( SNe Ia ) as Cosmological Standard Candles. Since the 1960s, the light curves of SNe were known to be remarkably homogenous.

By erica
(170 views)

The astro -ph “Reader’s Digest”

The astro -ph “Reader’s Digest”

Astrobites. The astro -ph “Reader’s Digest”. astrobites.org. Christopher M. Faesi (Harvard Univ.) on behalf of the Astrobites collaboration AAS 222 nd Meeting Indianapolis, IN June 4, 2013.

By lam
(132 views)

Chapter 26 Cosmology

Chapter 26 Cosmology

Chapter 26 Cosmology. Units of Chapter 26. 26.1 The Universe on the Largest Scales 26.2 The Expanding Universe 26.3 The Fate of the Cosmos 26.4 The Geometry of Space Curved Space 26.5 Will the Universe Expand Forever? Einstein and the Cosmological Constant.

By corin
(106 views)

Physics 133: Extragalactic Astronomy and Cosmology

Physics 133: Extragalactic Astronomy and Cosmology

Physics 133: Extragalactic Astronomy and Cosmology. Lecture 9; February 10 2014. Previously:. Measuring kinematics of the universe determines cosmological parameters. Proper distance depends on redshift via the Hubble constant, to first order

By ziarre
(125 views)

03/000

03/000

Australian Government Geoscience Australia. Cosmologic astrometry. Yonsei University, Seoul 1 8 October 2010. 03/000. Geoscience Australia. 18 October 2010. The concept. . . B. B = 10000 km ,  = 0.03 cos sec. Geoscience Australia. 18 October 2010.

By moswen
(171 views)

Cosmology

Cosmology

Cosmology. Cosmology- the study of the origin, present, and future of the universe. http://www.damtp.cam.ac.uk/user/gr/public/bb_cosmo.html. Einstein and Gravity.

By baxter
(179 views)

Dark Energy and the Hubble Constant

Dark Energy and the Hubble Constant

Dark Energy and the Hubble Constant. Jim Condon. What is dark energy (DE)? How does an accurate (  < 3%) local measurement of the Hubble constant H 0 plus CMB data constrain DE? How can astrometry determine H 0 ? Bonus: accurate SMBH masses The Megamaser Cosmology Project

By ovid
(75 views)

ABSTRACT:

ABSTRACT:

Infrared Studies of Type Ia Supernovae. M. Verdugo O. (PUC), K. Krisciunas (CTIO/OCIW), N. B. Suntzeff (CTIO), M. M. Phillips (OCIW), P. Candia (CTIO). ABSTRACT:

By junior
(101 views)

How Do You Make a Universe?

How Do You Make a Universe?

How Do You Make a Universe?. Geary Albright Saturday Morning Physics March 3, 2012. The history of the Universe can be summed up like this: Hydrogen is a light, odorless, colorless gas, that if given enough time, turns into people.

By etenia
(192 views)

Chapter 18 Our Expanding Universe

Chapter 18 Our Expanding Universe

Chapter 18 Our Expanding Universe. Chapter 18 makes the “grand leap” to the universe as a whole, and introduces ideas about other galaxies that are less than a century old. The existence of other galaxies of stars was debated without resolution in 1920, but is now common fact.

By lilika
(215 views)

The Accelerating Universe

The Accelerating Universe

The Accelerating Universe. Megan Donahue Michigan State University. The Accelerating Universe. What is the evidence that the Universe is not only expanding, but accelerating? What is dark energy? What does an accelerating Universe imply?. Edwin Hubble (1889-1953).

By fawzi
(191 views)

Expansion of the Universe, Ch. 26, 52

Expansion of the Universe, Ch. 26, 52

Expansion of the Universe, Ch. 26, 52. Probably the most profound discovery of all! But first we need to consider how we could tell if the Spiral Nebulae (now let’s call them galaxies) are moving.

By timothy-terry
(105 views)

ASTR 1102-002 2008 Fall Semester

ASTR 1102-002 2008 Fall Semester

ASTR 1102-002 2008 Fall Semester. Joel E. Tohline, Alumni Professor Office: 247 Nicholson Hall [Slides from Lecture21]. Chapter 24 : Galaxies and Chapter 26: Cosmology. Individual Galaxies. Location in Space Coordinate (angular) position on the sky Distance from Earth

By teegan-ayala
(68 views)

The Curvature of Space

The Curvature of Space

The Curvature of Space. The Isotropic and Homogeneous Universe. What does curved space look like?. The Expansion of the Universe. The Doppler Effect. Galaxy Spectra are Redshifted. Edwin Hubble (1889-1953). Hubble Diagram (1929). V = H r H ~ 500 km/s / Mpc (first measurement!).

By lana-hoover
(87 views)

P 7 20 Questions

P 7 20 Questions

P 7 20 Questions. Traffic Light Quiz. Rules. Everyone should reveal their answer at the same time Count down: 3, 2, 1, show!. 1. The parallax angle of a star is. twice the angle moved against the background of distant stars in 6 months

By guy-shaw
(50 views)

Optical Spectrum of a Galaxy

Optical Spectrum of a Galaxy

Optical Spectrum of a Galaxy. H a. Recession velocity = 14387 km / s z = 0.0479. Flux. H b. [O III]. Vesto Slipher. Redshifted Spectra. Edwin Hubble. The Original Hubble Law. Modern-Day Hubble Law. Today our best value for the Hubble constant is 70 +/- 5 km / s / Mpc.

By emma-chambers
(75 views)

Expansion of the Universe

Expansion of the Universe

Expansion of the Universe. Alexandra Higareda DeMaris Wilson. Introduction. Albert Einstein's General Theory of Relativity "the greatest blunder of my life" Enter Hubble. Expansion of the Universe

By victor-moody
(116 views)

Tools We Will Need on our Journey through the Universe

Tools We Will Need on our Journey through the Universe

Tools We Will Need on our Journey through the Universe. Don’t Panic… but it IS physics and math. Quick Review of Scientific Notation. Powers of Ten. Scientific Notation 10 n means 10 x 10 x 10 x 10 … [n times] 10 -n means 1/(10 x 10 x 10 ….) [n times]

By rae-bolton
(90 views)

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