News Release Archive:

News Release 135 of 250

July 15, 2004 10:00 AM (EDT)

News Release Number: STScI-2004-24

Astronomers Measure Mass of a Single Star — First Since the Sun

Technical facts about this news release:

About the Object
Object Name: MACHO-LMC-5, STAR-0516-7029
Object Description: Stellar Binary System/Microlensing Object
Position (J2000): R.A. 5h 16m 41s
Dec. -70° 29' 18"
Constellation: Dorado
Distance: The distance to the lensing object is 1,800 light-years (550pc). The distance to the object being lensed is that of the LMC: 160,000 light-years (50 kiloparsecs).
About the Data
Data Description: This image was created from HST observations from the following proposal: 9394: K. Cook, A. Drake, and S. Keller (Lawrence Livermore National Lab), and C. Nelson (UC Berkeley). The science team for this image release includes A. Gould (OSU), D. Bennett (U. Notre Dame) and D. Alves (Columbia U).
Instrument: ACS/WFC
Exposure Date(s): July 10/11, 2002; January 5, 2003
Exposure Time: 2 days
Filters: F606W (V) and F814W (I)
About the Image
Image Credit: NASA, ESA and D. Bennett (University of Notre Dame)
Release Date: July 15, 2004
Orientation: Astronomers Use Image to Measure Star's Mass