An infrared spectral match between GEMS and interstellar grains

John P. Bradley; Lindsay P. Keller; Theodore P. Snow; Martha S. Hanner; George J. Flynn; Joseph C. Gezo; Simon J. Clemett; Donald E. Brownlee; Janet E. Bowey

doi:10.1126/science.285.5434.1716

An infrared spectral match between GEMS and interstellar grains

John P. Bradley
, Lindsay P. Keller
, Theodore P. Snow
, Martha S. Hanner
, George J. Flynn
, Joseph C. Gezo
, Simon J. Clemett
, Donald E. Brownlee
, Janet E. Bowey

Mathematics

SUNY Plattsburgh

MVA Scientific Consultants
Georgia Institute of Technology
University of Colorado Boulder
Jet Propulsion Laboratory, California Institute of Technology
SUNY Plattsburgh
Queen Mary University of London

Research output: Contribution to journal › Article › peer-review

183 Scopus citations

Abstract

Infrared spectral properties of silicate grains in interplanetary dust particles (IDPs) were compared with those of astronomical silicates. The ~10-micrometer silicon-oxygen stretch bands of IDPs containing enstatite (MgSi0₃), forsterite (Mg₂SiO₄), and glass with embedded metal and sulfides (GEMS) exhibit fine structure and bandwidths similar to those of solar system comets and some pre-main sequence Herbig Ae/Be stars. Some GEMS exhibit a broad, featureless silicon-oxygen stretch band similar to those observed in interstellar molecular clouds and young stellar objects. These GEMS provide a spectral match to astronomical 'amorphous' silicates, one of the fundamental building blocks from which the solar system is presumed to have formed.

Original language	English
Pages (from-to)	1716-1718
Number of pages	3
Journal	Science
Volume	285
Issue number	5434
DOIs	https://doi.org/10.1126/science.285.5434.1716
State	Published - Sep 10 1999

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title = "An infrared spectral match between GEMS and interstellar grains",

abstract = "Infrared spectral properties of silicate grains in interplanetary dust particles (IDPs) were compared with those of astronomical silicates. The \textasciitilde{}10-micrometer silicon-oxygen stretch bands of IDPs containing enstatite (MgSi03), forsterite (Mg2SiO4), and glass with embedded metal and sulfides (GEMS) exhibit fine structure and bandwidths similar to those of solar system comets and some pre-main sequence Herbig Ae/Be stars. Some GEMS exhibit a broad, featureless silicon-oxygen stretch band similar to those observed in interstellar molecular clouds and young stellar objects. These GEMS provide a spectral match to astronomical 'amorphous' silicates, one of the fundamental building blocks from which the solar system is presumed to have formed.",

author = "Bradley, \{John P.\} and Keller, \{Lindsay P.\} and Snow, \{Theodore P.\} and Hanner, \{Martha S.\} and Flynn, \{George J.\} and Gezo, \{Joseph C.\} and Clemett, \{Simon J.\} and Brownlee, \{Donald E.\} and Bowey, \{Janet E.\}",

year = "1999",

month = sep,

day = "10",

doi = "10.1126/science.285.5434.1716",

language = "English",

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TY - JOUR

T1 - An infrared spectral match between GEMS and interstellar grains

AU - Bradley, John P.

AU - Keller, Lindsay P.

AU - Snow, Theodore P.

AU - Hanner, Martha S.

AU - Flynn, George J.

AU - Gezo, Joseph C.

AU - Clemett, Simon J.

AU - Brownlee, Donald E.

AU - Bowey, Janet E.

PY - 1999/9/10

Y1 - 1999/9/10

N2 - Infrared spectral properties of silicate grains in interplanetary dust particles (IDPs) were compared with those of astronomical silicates. The ~10-micrometer silicon-oxygen stretch bands of IDPs containing enstatite (MgSi03), forsterite (Mg2SiO4), and glass with embedded metal and sulfides (GEMS) exhibit fine structure and bandwidths similar to those of solar system comets and some pre-main sequence Herbig Ae/Be stars. Some GEMS exhibit a broad, featureless silicon-oxygen stretch band similar to those observed in interstellar molecular clouds and young stellar objects. These GEMS provide a spectral match to astronomical 'amorphous' silicates, one of the fundamental building blocks from which the solar system is presumed to have formed.

AB - Infrared spectral properties of silicate grains in interplanetary dust particles (IDPs) were compared with those of astronomical silicates. The ~10-micrometer silicon-oxygen stretch bands of IDPs containing enstatite (MgSi03), forsterite (Mg2SiO4), and glass with embedded metal and sulfides (GEMS) exhibit fine structure and bandwidths similar to those of solar system comets and some pre-main sequence Herbig Ae/Be stars. Some GEMS exhibit a broad, featureless silicon-oxygen stretch band similar to those observed in interstellar molecular clouds and young stellar objects. These GEMS provide a spectral match to astronomical 'amorphous' silicates, one of the fundamental building blocks from which the solar system is presumed to have formed.

UR - https://www.scopus.com/pages/publications/0033543633

U2 - 10.1126/science.285.5434.1716

DO - 10.1126/science.285.5434.1716

M3 - Article

C2 - 10481004

SN - 0036-8075

VL - 285

SP - 1716

EP - 1718

JO - Science

JF - Science

IS - 5434

ER -

An infrared spectral match between GEMS and interstellar grains

Abstract

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