News Release Archive:

News Release 712 of 1051

November 9, 1999 01:00 PM (EST)

News Release Number: STScI-1999-42

The Trifid Nebula: Stellar Sibling Rivalry

Technical facts about this news release:

About the Object
Object Name: Trifid Nebula, M20, NGC 6514
Object Description: Emission Nebula; HII Region
Position (J2000): R.A. 18h 02m 23s.00
Dec. -23° 01' 48".0
Constellation: Sagittarius
Distance: Approximately 9,000 light-years (2800 parsecs)
Dimensions: This image is roughly 2.5 arcminutes (6.6 light-years or 2.0 parsecs) wide.
About the Data
Data Description: This image was created from HST data from the following proposal, 6857: J. Trauger (JPL), C. Burrows (STScI), J. Clarke (U. Michigan), D. Crisp (JPL), J. Hoessel and J. Gallagher (U. Wisconsin-Madison), R. Griffiths (JHU), J. Hester (ASU), J. Holtzman (Lowell Obs.), J. Mould (Mt. Stromlo and Siding Spring Obs.), J. Westphal (Caltech).
Instrument: WFPC2
Exposure Date(s): September 8, 1997
Exposure Time: 4.1 hours
Filters: F502N ([O III]), F547M (Strömgren y), F656N (H-alpha), F673N ([S II])
About the Image
Image Credit: NASA and J. Hester (ASU)
Release Date: November 9, 1999
Orientation: The Trifid Nebula: Stellar Nursery Torn Apart By Radiation From Nearby Star