Relativistic deflection of background starlight measures the mass of a nearby white dwarf star

Kailash C. Sahu, Jay Anderson, Stefano Casertano, Howard E. Bond, Pierre Bergeron, Edmund P. Nelan, Laurent Pueyo, Thomas M. Brown, Andrea Bellini, Zoltan G. Levay, Joshua Sokol, Martin Dominik, Annalisa Calamida, Noé Kains, Mario Livio

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27 Citations (Scopus)

Abstract

Gravitational deflection of starlight around the Sun during the 1919 total solar eclipse provided measurements that confirmed Einstein's general theory of relativity. We have used the Hubble Space Telescope to measure the analogous process of astrometric microlensing caused by a nearby star, the white dwarf Stein 2051 B. As Stein 2051 B passed closely in front of a background star, the background star's position was deflected. Measurement of this deflection at multiple epochs allowed us to determine the mass of Stein 2051 B-the sixth-nearest white dwarf to the Sun-as 0.675 ± 0.051 solar masses. This mass determination provides confirmation of the physics of degenerate matter and lends support to white dwarf evolutionary theory.

Original languageEnglish (US)
Pages (from-to)1046-1050
Number of pages5
JournalScience
Volume356
Issue number6342
DOIs
StatePublished - Jun 9 2017

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Solar System
Telescopes
Process Assessment (Health Care)
Physics

All Science Journal Classification (ASJC) codes

  • General

Cite this

Sahu, K. C., Anderson, J., Casertano, S., Bond, H. E., Bergeron, P., Nelan, E. P., ... Livio, M. (2017). Relativistic deflection of background starlight measures the mass of a nearby white dwarf star. Science, 356(6342), 1046-1050. https://doi.org/10.1126/science.aal2879
Sahu, Kailash C. ; Anderson, Jay ; Casertano, Stefano ; Bond, Howard E. ; Bergeron, Pierre ; Nelan, Edmund P. ; Pueyo, Laurent ; Brown, Thomas M. ; Bellini, Andrea ; Levay, Zoltan G. ; Sokol, Joshua ; Dominik, Martin ; Calamida, Annalisa ; Kains, Noé ; Livio, Mario. / Relativistic deflection of background starlight measures the mass of a nearby white dwarf star. In: Science. 2017 ; Vol. 356, No. 6342. pp. 1046-1050.
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abstract = "Gravitational deflection of starlight around the Sun during the 1919 total solar eclipse provided measurements that confirmed Einstein's general theory of relativity. We have used the Hubble Space Telescope to measure the analogous process of astrometric microlensing caused by a nearby star, the white dwarf Stein 2051 B. As Stein 2051 B passed closely in front of a background star, the background star's position was deflected. Measurement of this deflection at multiple epochs allowed us to determine the mass of Stein 2051 B-the sixth-nearest white dwarf to the Sun-as 0.675 ± 0.051 solar masses. This mass determination provides confirmation of the physics of degenerate matter and lends support to white dwarf evolutionary theory.",
author = "Sahu, {Kailash C.} and Jay Anderson and Stefano Casertano and Bond, {Howard E.} and Pierre Bergeron and Nelan, {Edmund P.} and Laurent Pueyo and Brown, {Thomas M.} and Andrea Bellini and Levay, {Zoltan G.} and Joshua Sokol and Martin Dominik and Annalisa Calamida and No{\'e} Kains and Mario Livio",
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Sahu, KC, Anderson, J, Casertano, S, Bond, HE, Bergeron, P, Nelan, EP, Pueyo, L, Brown, TM, Bellini, A, Levay, ZG, Sokol, J, Dominik, M, Calamida, A, Kains, N & Livio, M 2017, 'Relativistic deflection of background starlight measures the mass of a nearby white dwarf star', Science, vol. 356, no. 6342, pp. 1046-1050. https://doi.org/10.1126/science.aal2879

Relativistic deflection of background starlight measures the mass of a nearby white dwarf star. / Sahu, Kailash C.; Anderson, Jay; Casertano, Stefano; Bond, Howard E.; Bergeron, Pierre; Nelan, Edmund P.; Pueyo, Laurent; Brown, Thomas M.; Bellini, Andrea; Levay, Zoltan G.; Sokol, Joshua; Dominik, Martin; Calamida, Annalisa; Kains, Noé; Livio, Mario.

In: Science, Vol. 356, No. 6342, 09.06.2017, p. 1046-1050.

Research output: Contribution to journalArticle

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AU - Bergeron, Pierre

AU - Nelan, Edmund P.

AU - Pueyo, Laurent

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AU - Livio, Mario

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