Featured Research

from universities, journals, and other organizations

e-MERLIN set to give wizard new view of Hubble Deep Field region

Date:
April 19, 2011
Source:
Royal Astronomical Society (RAS)
Summary:
The Hubble Deep Field (HDF), taken by the Hubble Space Telescope in the 1990s, is one of the most iconic images in astronomy. Now, astronomers at Jodrell Bank Observatory have produced a high-resolution mosaic of the HDF region using observations from the MERLIN and VLA radio telescope arrays, as well as the new e-MERLIN array.

Composite image of 19 sets of observations by the MERLIN and VLA radio telescope arrays. The high resolution of the map is illustrated by the inset images of selected galaxies in the field. The most central image is expanded twice (including an e-MERLIN high-resolution image), and depicts a type of galaxy with a bright Active Galactic Nucleus, thought to be caused by matter falling towards a central super-massive black hole. This close-up is the most recent image taken by e-MERLIN and clearly reveals the compact core - less than 0.05 arc-seconds in diameter.
Credit: Nick Wrigley/University of Manchester

The Hubble Deep Field (HDF), taken by the Hubble Space Telescope in the 1990s, is one of the most iconic images in astronomy. Now, astronomers at Jodrell Bank Observatory have produced a high-resolution mosaic of the HDF region using observations from the MERLIN and VLA radio telescope arrays, as well as the new e-MERLIN array.

Related Articles


Nineteen separate images have been stitched together to create the widest high-resolution radio map of the region to date. The area observed measures a quarter of a degree wide, about half the apparent diameter of the full moon, and depicts numerous galaxies billions of light-years away. The map is inset with images showing even sharper views of some of the galaxies observed. The map will be presented at the RAS National Astronomy Meeting in Llandudno by graduate student, Nick Wrigley, on Wednesday 20th April.

The MERLIN array is in the final stages of an upgrade to become the e-MERLIN array of seven radio telescopes, spanning 217km, connected by a new optical fibre network and operated from Jodrell Bank by the University of Manchester. Wrigley, under the supervision of Dr Rob Beswick and Dr Tom Muxlow at the Jodrell Bank Centre for Astrophysics, has created the map as a pilot study for a future e-MERLIN survey, which will focus on ever deeper (more sensitive) studies in the HDF region. The survey will measure massive star formation and Active Galactic Nucleus (AGN) activity in very distant galaxies, tracing the development of the stellar populations and black hole growth in the first massive galaxies.

"This type of high-resolution imagery provided by MERLIN, and soon e-MERLIN, will allow astronomers to distinguish between different types of galaxies mapped, with the wide field of view allowing relative populations to be determined, giving insights into how they change over cosmological time. In the centre of the image is a galaxy with a bright AGN, a feature thought to be caused by matter falling towards a central super-massive black hole. This close-up is the most recent image taken by e-MERLIN and shows the compact core in extraordinary detail," said Wrigley.

"Through e-MERLIN, we will get our first truly reliable view of the distribution of star formation within typical galaxies at the time when the bulk of the stars in the present-day Universe were being formed. e-MERLIN will help us disentangle the mystery of why we see apparently simultaneous growth of the black holes and stellar populations in galaxies," added Muxlow.

"Using the more accurate observations from e-MERLIN, it will be possible to produce more precise models of the physical process of star formation and understand how star clusters affect the growth of stellar populations, providing answers to some key questions in modern cosmology."


Story Source:

The above story is based on materials provided by Royal Astronomical Society (RAS). Note: Materials may be edited for content and length.


Cite This Page:

Royal Astronomical Society (RAS). "e-MERLIN set to give wizard new view of Hubble Deep Field region." ScienceDaily. ScienceDaily, 19 April 2011. <www.sciencedaily.com/releases/2011/04/110419205834.htm>.
Royal Astronomical Society (RAS). (2011, April 19). e-MERLIN set to give wizard new view of Hubble Deep Field region. ScienceDaily. Retrieved March 5, 2015 from www.sciencedaily.com/releases/2011/04/110419205834.htm
Royal Astronomical Society (RAS). "e-MERLIN set to give wizard new view of Hubble Deep Field region." ScienceDaily. www.sciencedaily.com/releases/2011/04/110419205834.htm (accessed March 5, 2015).

Share This


More From ScienceDaily



More Space & Time News

Thursday, March 5, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: SpaceX Launches Rocket, Satellites on Board

Raw: SpaceX Launches Rocket, Satellites on Board

AP (Mar. 2, 2015) — SpaceX launched it&apos;s 16th Falcon 9 rocket from Cape Canaveral, Florida on Sunday night. The rocket was carrying two commercial communications satellites. (March 2) Video provided by AP
Powered by NewsLook.com
NASA EDGE: SMAP Launch

NASA EDGE: SMAP Launch

NASA (Mar. 2, 2015) — Join NASA EDGE as they cover the launch of the Soil Moisture Active Passive (SMAP) spacecraft live from Vandenberg Air Force Base.  Special guests include NASA Administrator Charlie Bolden, SMAP Project System Engineer Shawn Goodman and Lt Col Brande Walton and Joseph Sims from the Air Force.  No word on the Co-Host&apos;s whereabouts. Video provided by NASA
Powered by NewsLook.com
Astronauts Leave Space Station for Third Spacewalk

Astronauts Leave Space Station for Third Spacewalk

Reuters - News Video Online (Mar. 1, 2015) — NASA Commander Barry Wilmore and Flight Engineer Terry Virts perform their third spacewalk in eight days outside the International Space Station. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Spacesuit Water Leaks Not An Issue On Latest ISS Walk

Spacesuit Water Leaks Not An Issue On Latest ISS Walk

Newsy (Mar. 1, 2015) — Astronauts are ahead of schedule with hardware upgrades to the International Space Station, despite last week&apos;s spacesuit water leak scare. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins