Such a galaxy is unexpected in a survey of our size 9, suggesting that the early Universe may harbour a larger number of intense sites of star formation than expected. We calculate a surprisingly high star-formation rate of about 330 solar masses per year, which is more than a factor of 100 greater than that seen in the Milky Way. This galaxy’s colours are consistent with significant metal content, implying that galaxies become enriched rapidly. The detected emission line at a wavelength of 1.0343 micrometres is likely to be Lyman α emission, placing this galaxy at a redshift z = 7.51, an epoch 700 million years after the Big Bang. We detect a near-infrared emission line from only a single galaxy, confirming that some process is making Lyman α difficult to detect. Here we report a deep near-infrared spectroscopic survey of 43 photometrically-selected galaxies with z > 6.5. The small samples and limited depth of previous observations, however, makes these conclusions tentative. The small fraction of confirmed galaxies may indicate that the neutral fraction in the intergalactic medium rises quickly at z > 6.5, given that Lyman α is resonantly scattered by neutral gas 3, 5, 6, 7, 8.
Online interaction to different Digital Sky Survey (DSS).Exhaustive Object Information for every object in the database.Color Milky Way at different wavelenght.Revised high resolution maps of planets obtained from the latest space missions.Improved Sky Diary - the calendar includes additional celestial events in the monthly overview and a new planet/eclipses observation mode (special guided tours animating the events).Exact numerical integration of orbits of comets and asteroids.Add you own images of deep sky objects on the sky.Calculate and print maps of solar eclipses on Earth map (both in the past and future).Calculates the position and simulates the movement of some 100,000,000 stars, more than 1,000,000 deep space objects including nebulae, galaxies and quasars, over 150,000 asteroids, 100+ planetary moons and some 2,000 comets.
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