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Images: Celestial Composition

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Celestial Composition

*Description*:> Here we see a "movie" of 12 consecutive epochs of a long period (~50 days) Cepheid variable. The Cepheid is in the center of a crowded region of stars. The resolution of HST is required to pick out the variable star from its neighbors. The star was caught initially fading before suddenly doubling in brightness, then declining again to its faintest point over 4-5 weeks. Technical facts about this news release: About the Object Object Name: NGC 3370 Object Description: Spiral Galaxy Position (J2000): R.A. 10h 47m 04s.18 Dec. +17° 16' 22".8 Constellation: Leo Distance: 98 million light-years (30 megaparsecs) Dimensions: This image is roughly 3.4 arcminutes (95,000 light-years or 29,000 parsecs) wide. About the Data Data Description: This image was created from HST data from the following proposals: 9351: A. Riess (STScI), P. Stetson (NRC), A. Filippenko (UC Berkeley); and 9696: K. Noll (STScI), A. Riess (STScI), L. Frattare, H. Bond, C. Christian, F. Hamilton, Z. Levay, and T. Royle (STScI). Instrument: ACS/WFC Exposure Date(s): April/May 2003 Exposure Time: 25 hours Filters: F435W("B"), F555W("V"), F814W("I") About the Image Image Credit: NASA, The Hubble Heritage Team and A. Riess (STScI) Release Date: September 4, 2003 Orientation: Spiral Galaxy NGC 3370, Home to Supernova Seen in 1994 [ http://imgsrc.hubblesite.org/hu/db/2003/24/images/a/formats/compass_large_web.jpg ] What is Hubble Heritage? A monthly showcase of new and archival Hubble images. Go to the Heritage site. Back to top [ #top ] *News Release Number:*: STScI-2003-24b

NASA Identifier: SPD-HUBBLE-STScI-2003-24b



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Date Taken:09.21.2009

Date Posted:10.10.2012 11:29

Photo ID:686614

Resolution:1536x1536

Size:320.94 KB

Location:WASHINGTON, DC, USGlobe

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