The size of meteoroid constituent grains: Implications for interstellar meteoroids

R. L. Hawkes; M. D. Campbell; A. G. LeBlanc; L. Parker; P. Brown; J. Jones; S. P. Worden; R. R. Correll; S. C. Woodworth; A. A. Fisher; P. Gural; I. S. Murray; M. Connors; T. Montague; D. Jewell; D. D. Babcock

doi:10.1016/S0964-2749(02)80318-3

The size of meteoroid constituent grains: Implications for interstellar meteoroids

R. L. Hawkes, M. D. Campbell, A. G. LeBlanc, L. Parker, P. Brown, J. Jones, S. P. Worden, R. R. Correll, S. C. Woodworth, A. A. Fisher, P. Gural, I. S. Murray, M. Connors, T. Montague, D. Jewell, D. D. Babcock

Centre for Science

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

Abstract

The most widely accepted model for the structure of cometary meteoroids is a dustaball with grains bound together by a more volatile substance [1]. In this paper we estimate the size distribution of dustball grains from meteor flare duration, using image intensified CCD or 1998 Leonid meteors. Upon the assumption of simultaneous release of dustball grains at the beginning of the flare, numerical atmospheric ablation models suggest that the dustball grains in these Leonids are of the order of 10^-5 to 10^-4 kg, which is somewhat larger than estimates obtained by other methods. If the dustball grain sizes determined here are representative of cometary meteoroid structure in general, only the most massive (O and BO) type stars could eject these grains into interstellar space by radiation pressure forces.

Original language	English
Pages (from-to)	23-26
Number of pages	4
Journal	COSPAR Colloquia Series
Volume	15
Issue number	C
DOIs	https://doi.org/10.1016/S0964-2749(02)80318-3
Publication status	Published - 2002

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Hawkes, R. L., Campbell, M. D., LeBlanc, A. G., Parker, L., Brown, P., Jones, J., Worden, S. P., Correll, R. R., Woodworth, S. C., Fisher, A. A., Gural, P., Murray, I. S., Connors, M., Montague, T., Jewell, D., & Babcock, D. D. (2002). The size of meteoroid constituent grains: Implications for interstellar meteoroids. COSPAR Colloquia Series, 15(C), 23-26. https://doi.org/10.1016/S0964-2749(02)80318-3

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title = "The size of meteoroid constituent grains: Implications for interstellar meteoroids",

abstract = "The most widely accepted model for the structure of cometary meteoroids is a dustaball with grains bound together by a more volatile substance [1]. In this paper we estimate the size distribution of dustball grains from meteor flare duration, using image intensified CCD or 1998 Leonid meteors. Upon the assumption of simultaneous release of dustball grains at the beginning of the flare, numerical atmospheric ablation models suggest that the dustball grains in these Leonids are of the order of 10-5 to 10-4 kg, which is somewhat larger than estimates obtained by other methods. If the dustball grain sizes determined here are representative of cometary meteoroid structure in general, only the most massive (O and BO) type stars could eject these grains into interstellar space by radiation pressure forces.",

author = "Hawkes, {R. L.} and Campbell, {M. D.} and LeBlanc, {A. G.} and L. Parker and P. Brown and J. Jones and Worden, {S. P.} and Correll, {R. R.} and Woodworth, {S. C.} and Fisher, {A. A.} and P. Gural and Murray, {I. S.} and M. Connors and T. Montague and D. Jewell and Babcock, {D. D.}",

year = "2002",

doi = "10.1016/S0964-2749(02)80318-3",

language = "English",

volume = "15",

pages = "23--26",

number = "C",

}

Hawkes, RL, Campbell, MD, LeBlanc, AG, Parker, L, Brown, P, Jones, J, Worden, SP, Correll, RR, Woodworth, SC, Fisher, AA, Gural, P, Murray, IS, Connors, M, Montague, T, Jewell, D & Babcock, DD 2002, 'The size of meteoroid constituent grains: Implications for interstellar meteoroids', COSPAR Colloquia Series, vol. 15, no. C, pp. 23-26. https://doi.org/10.1016/S0964-2749(02)80318-3

TY - JOUR

T1 - The size of meteoroid constituent grains

T2 - Implications for interstellar meteoroids

AU - Hawkes, R. L.

AU - Campbell, M. D.

AU - LeBlanc, A. G.

AU - Parker, L.

AU - Brown, P.

AU - Jones, J.

AU - Worden, S. P.

AU - Correll, R. R.

AU - Woodworth, S. C.

AU - Fisher, A. A.

AU - Gural, P.

AU - Murray, I. S.

AU - Connors, M.

AU - Montague, T.

AU - Jewell, D.

AU - Babcock, D. D.

PY - 2002

Y1 - 2002

N2 - The most widely accepted model for the structure of cometary meteoroids is a dustaball with grains bound together by a more volatile substance [1]. In this paper we estimate the size distribution of dustball grains from meteor flare duration, using image intensified CCD or 1998 Leonid meteors. Upon the assumption of simultaneous release of dustball grains at the beginning of the flare, numerical atmospheric ablation models suggest that the dustball grains in these Leonids are of the order of 10-5 to 10-4 kg, which is somewhat larger than estimates obtained by other methods. If the dustball grain sizes determined here are representative of cometary meteoroid structure in general, only the most massive (O and BO) type stars could eject these grains into interstellar space by radiation pressure forces.

AB - The most widely accepted model for the structure of cometary meteoroids is a dustaball with grains bound together by a more volatile substance [1]. In this paper we estimate the size distribution of dustball grains from meteor flare duration, using image intensified CCD or 1998 Leonid meteors. Upon the assumption of simultaneous release of dustball grains at the beginning of the flare, numerical atmospheric ablation models suggest that the dustball grains in these Leonids are of the order of 10-5 to 10-4 kg, which is somewhat larger than estimates obtained by other methods. If the dustball grain sizes determined here are representative of cometary meteoroid structure in general, only the most massive (O and BO) type stars could eject these grains into interstellar space by radiation pressure forces.

UR - http://www.scopus.com/inward/record.url?scp=77957089002&partnerID=8YFLogxK

U2 - 10.1016/S0964-2749(02)80318-3

DO - 10.1016/S0964-2749(02)80318-3

M3 - Journal Article

AN - SCOPUS:77957089002

SN - 0964-2749

VL - 15

SP - 23

EP - 26

JO - COSPAR Colloquia Series

JF - COSPAR Colloquia Series

IS - C

ER -

The size of meteoroid constituent grains: Implications for interstellar meteoroids

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