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News and Views
Nature 433, 207-208 (20 January 2005) | doi:10.1038/433207a; Published online 19 January 2005
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PhD Programs
- Georg-August-Universitat Gottingen
- Göttingen, Germany
Manager (Department : Patents)
- Piramal HealthCare
- Mumbai 400080 India
Astronomy: Weighing the baby
I. Neill Reid1
Abstract
Mass is the fundamental parameter in stellar astrophysics, but measuring mass is difficult, especially for young stars. A study of a youthful neighbour of the Sun provides insight into the accuracy of widely used calibrations.
Size matters for stars. Individually, a star's mass determines which fusion reactions are possible in the core, and hence its luminosity, surface temperature and the length of its life.
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I. Neill Reid is at the Space Telescope Science Institute, Science Policies Division, 3700 San Martin Drive, Baltimore, Maryland
21218, USA.
e-mail: Email: inr@stsci.edu
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