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Spectra of Galaxies within the Hubble Ultra Deep Field

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A portion of the Hubble Ultra Deep Field containing hundreds of galaxies of different colors, shapes, and sizes with dark space in between. Four spiral galaxies, labeled 1 through 4, are called out with white boxes. Galaxy 1 is located in the upper left portion of the image. Galaxies 2, 3, and 4 are close to each other in the lower left portion of the image. On top of the right side of the image are four large rectangular boxes, labeled with numbers 1 to 4 to correspond to the galaxies. Within each box, a magnified image of the galaxy is shown on the left side. The galaxies are labeled: 1. GS3-40891, 2. GS4-30760, 3. GS4-29845, 4. GS4-29048. All four galaxies have bright cores and distinct spiral arms. The first galaxy is round and relatively compact, and seen face-on. The second galaxy is slightly oblong due to our observation angle. The third galaxy is face-on and has longer spiral structures that reach out from the core. The fourth galaxy is very compact.

About This Image

Release Date

June 27, 2022 10:00AM (EDT)

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Release ID: 2022-018

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Caption

This Hubble image features four of the thousands of galaxies found within the Hubble Ultra Deep Field. All of the highlighted galaxies show evidence of vigorous star formation (blue regions filled with hot, young stars). In the insets at right, the near-infrared spectrum of each galaxy is displayed. By examining a galaxy’s spectrum, you can learn about the ages of its stars, its star-formation history, how many heavy chemical elements it contains, and more.

Upon entering operations in 2027, the Nancy Grace Roman Space Telescope will be able to collect spectra for every object in its field of view, which is 200 times larger than Hubble’s in infrared light. As a result, it will enable studies of rare galaxies from a period known as “cosmic noon,” when many galaxies went through growth spurts.

Credits

Science

NASA, ESA, STScI, Casey Papovich (TAMU)

Image Processing

Alyssa Pagan (STScI)

Keywords

About The Object

Object Name
HLF; GS3-40891; GS4-30760; GS4-29845; GS4-29048
Object Description
Deep field with spectra of starburst galaxies
R.A. Position
3:32:29
Dec. Position
-27:49:12
Constellation
Fornax

About The Data

Data Description
Image: The HLF image was created from public archive Hubble data from the following proposals:  9352 , 10189 , 10340 , 12099 , and 12461 : A. Riess (STScI/JHU);  9425: M. Giavalsco (University of Massachusetts);  9480, and 9984 : J. Rhodes (JPL); 9488 : K. Ratnatunga (Carnegie Mellon University);  9500 : H. Rix (MPE) 9575 : W. Sparks (STScI);  9793 , 10530 , and 13779 : S. Malhotra (Arizona State University);  9803 : R. Thompson (University of Arizona) 9978 and 10086 : S. Beckwith (STScI);  10258 : C. Kretchmer (JHU);  10632 : M. Stiavelli (STScI); 11144 R. Bouwens (Universiteit Leiden); 11359 : R. O'Connell (University of Virginia);  11563 , and 12007: G. Illingworth (University of California, Santa Cruz);  12060 , 12061 , and 12062 : S. Faber (University of California, Santa Cruz);  12177 : P. van Dokkum (Yale University). 12498 : R. Ellis (University College London) 12534 : H. Teplitz (California Institute of Technology) 12866 : M. Swinbank (Durham University) 12990 : A. Muzzin (York University) 13872 : P. Oesch (Observatoire de Geneve) 14088: E. Vanzella (INAF) The HLF team members include: G. Illingworth and D. Magee (University of California, Santa Cruz), K. Whitaker (University of Connecticut), R. Bouwens (Leiden University), P. Oesch (University of Geneva), P. van Dokkum (Yale University), I. Labbe (Swinburne University), B. Holden (University of California, Santa Cruz), M. Franx (Leiden University), and V. Gonzalez (Universidad de Chile). Spectra: The Hubble image(spectra) was created from HST data from proposal: 14227 (C. Papovich). 
Instrument
ACS/WFC, WFC3/IR, WFC3/UVIS
Filters
WFC3/UV (F225W, F275W, and F336W); ACS (F435W, F606W, F775W, F814W, and F850LP); WFC3/IR (G102, F098M, F105W, F125W, F140W, and F160W)

About The Image

Color Info
IMAGE: These images are composites of separate exposures acquired by the ACS and WFC3 instruments on the Hubble Space Telescope. Several filters were used to sample broad and narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Blue: F606W (Wide V)  Green: F606W (Wide V) and F850LP (SDSS z')  Red: F850LP (SDSS z') SPECTRA: The spectra is created from exposures from the WFC3/IR instrument using a grism. A color map from yellow to red is applied to the spectra which corresponds to increasing wavelength. 

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