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Massive Galaxies in the Early Universe

Pieter van Dokkum, , , Gabriel Brammer

Using very deep near-infrared surveys from the ground and from space we have recently identified a large population of red galaxies in the early Universe. These objects emit most of their radiation in the rest-frame optical, which is redshifted to the near-infrared for redshifts z>2, and are very faint in the rest-frame ultraviolet. The image shows an example of this type of object in the Hubble Ultra Deep Field, the deepest image of the sky ever taken. This distant galaxy looks remarkably similar to the large nearby spiral galaxy M31, which is shown at the same physical scale and rest-frame wavelengths. In the context of the Yale/Chile survey we have measured the luminosity function, clustering, and spectra of these newly discovered galaxies.

 

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Image Credits: (header) Image of prominence, SOHO (ESA & NASA)

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02.02.2009 The International Year of Astronomy at Yale
The Astronomy Department is excited to participate in this global effort to help the citizens of the world rediscover their place in the Universe through the day- and night-time sky...
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01.08.2010 Second smallest exoplanet found to date discovered at Keck
The new discovery will aid in solving the puzzle of how planets and planetary systems form and evolve.
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This graphic shows the data confirming the existence of extrasolar planet HD 156668b as discovered using Keck/HIRES. The planet
01.05.2010 Deepest Image of Universe Yet Reveals Most Distant Galaxies Ever Found
An international team of astronomers has used the Hubble Space Telescope to take the deepest image of the universe ever, revealing the farthest and youngest known galaxies. The results, which could offer insights into how the first galaxies formed and evolved after the Big Bang, are being presented Jan. 5 at the American Astronomical Society meeting in Washington, D.C.
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YCAA Seminars02.09.2010, 2pm JWG 263
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Caltech
"The Rise and Fall of Passive Disk Galaxies"

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Harvard University
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YCAA Seminars02.16.2010, 2pm JWG 263
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02.09.2010 Planetarium Show

The Leitner Family Observatory and Planetarium is open every Tuesday night for a planetarium show. Weather permitting there will also be public viewing of planets, nebulae, star clusters and whatever happens to be interesting in the sky. Seats are available on a first come first serve basis. No reservations necessary. Time: 7pm and 8pm April - October and 6pm and 7pm November - March

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02.15.2010 Planetarium Show

Mon, February 15, 3pm – 4pm Where: Leitner Family Observatory and Planetarium, 355 Prospect. St., New Haven 06511 Description: Show consists of a 10 minute live show about the night sky followed by "Oasis in Space", a trip through our solar system. Suitable for all ages. There are 50 seats in the planetarium theater, which are available on a "first-come, first-served" basis. All shows are free.

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© 2010 Yale University. All Rights Reserved.