File:UGC 4459.jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file(1,000 × 712 pixels, file size: 410 KB, MIME type: image/jpeg)

Summary

Description
English: UGC 4459 (2014)

This one was a little harder. It’s fainter and more diffuse than the previous couple of dwarf galaxies I’ve processed. It is difficult for me to imagine all of these dwarf galaxies evolving over the eons. This one looks pretty jumbled. A lot of them are disorganized like this. What happened here, recently? Will it smooth out into an ellipsoid if left largely unperturbed by outside forces? I’m also surprised by the amount of star formation that goes on in dwarf galaxies. They’re so unassuming. It is easy to trace the outlines of a couple of Strömgren spheres. Maybe not so easy for the more complex cloud of H-alpha on the right.

No chip gap, this time. The LEGUS data still did not totally overlap with the F814W and F555W this time so in places where blue is missing, green is pseudo, red is F814W, and blue is F555W. I had some old WFPC2 H-alpha data to use this time. Nice!

This image is possible thanks to the individuals responsible for Proposal 10605, Proposal 11987, and the LEGUS Survey.

Red: HST_10605_05_ACS_WFC_F814W_sci + hst_11987_01_wfpc2_f656n_wf_sci Green: HST_10605_05_ACS_WFC_F555W_sci Blue: WFC3 / UVIS F275W + F336W + F438W (All three from LEGUS)

North is NOT up. It is 32° clockwise from up.
Date
Source http://www.geckzilla.com/art/v/430; see also http://www.spacetelescope.org/images/potw1613a/
Author Hubble Space Telescope/Judy Schmidt

Licensing

w:en:Creative Commons
attribution
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

16 August 2014

image/jpeg

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current09:21, 20 December 2015Thumbnail for version as of 09:21, 20 December 20151,000 × 712 (410 KB)MylkomedaUser created page with UploadWizard
The following pages on the English Wikipedia use this file (pages on other projects are not listed):

Global file usage

Metadata