Photo-ionization induced rapid grain growth in novae

S. N. Shore; R. D. Gehrz

doi:10.1051/0004-6361:20034243

Photo-ionization induced rapid grain growth in novae

S. N. Shore, R. D. Gehrz

Physics and Astronomy (Twin Cities)

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

27 Scopus citations

Abstract

An elementary model is developed for grain growth during the expansion stage of nova ejecta. Rather than suppressing grain formation, we argue that agglomeration of atoms by dust nuclei proceeds kinetically through induced dipole reactions in a partially ionized medium. Ionization of a cluster increases once the ejecta become transparent in the ultraviolet which triggers runaway grain growth. This mechanism may also be important in other dust-forming hot stars such as Luminous Blue Variables and Wolf-Rayet systems.

Original language	English (US)
Pages (from-to)	695-699
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	417
Issue number	2
DOIs	https://doi.org/10.1051/0004-6361:20034243
State	Published - Apr 2004

Keywords

ISM: dust, extinction
Stars: mass-loss
Stars: novae, cataclysmic variables

Publisher link

10.1051/0004-6361:20034243

Find It

Find It at U of M Libraries

Cite this

@article{7af429febc0a4dc0b776a76c2ab3091b,

title = "Photo-ionization induced rapid grain growth in novae",

abstract = "An elementary model is developed for grain growth during the expansion stage of nova ejecta. Rather than suppressing grain formation, we argue that agglomeration of atoms by dust nuclei proceeds kinetically through induced dipole reactions in a partially ionized medium. Ionization of a cluster increases once the ejecta become transparent in the ultraviolet which triggers runaway grain growth. This mechanism may also be important in other dust-forming hot stars such as Luminous Blue Variables and Wolf-Rayet systems.",

keywords = "ISM: dust, extinction, Stars: mass-loss, Stars: novae, cataclysmic variables",

author = "Shore, {S. N.} and Gehrz, {R. D.}",

year = "2004",

month = apr,

doi = "10.1051/0004-6361:20034243",

language = "English (US)",

volume = "417",

pages = "695--699",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "2",

}

TY - JOUR

T1 - Photo-ionization induced rapid grain growth in novae

AU - Shore, S. N.

AU - Gehrz, R. D.

PY - 2004/4

Y1 - 2004/4

N2 - An elementary model is developed for grain growth during the expansion stage of nova ejecta. Rather than suppressing grain formation, we argue that agglomeration of atoms by dust nuclei proceeds kinetically through induced dipole reactions in a partially ionized medium. Ionization of a cluster increases once the ejecta become transparent in the ultraviolet which triggers runaway grain growth. This mechanism may also be important in other dust-forming hot stars such as Luminous Blue Variables and Wolf-Rayet systems.

AB - An elementary model is developed for grain growth during the expansion stage of nova ejecta. Rather than suppressing grain formation, we argue that agglomeration of atoms by dust nuclei proceeds kinetically through induced dipole reactions in a partially ionized medium. Ionization of a cluster increases once the ejecta become transparent in the ultraviolet which triggers runaway grain growth. This mechanism may also be important in other dust-forming hot stars such as Luminous Blue Variables and Wolf-Rayet systems.

KW - ISM: dust, extinction

KW - Stars: mass-loss

KW - Stars: novae, cataclysmic variables

UR - http://www.scopus.com/inward/record.url?scp=1842638169&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1842638169&partnerID=8YFLogxK

U2 - 10.1051/0004-6361:20034243

DO - 10.1051/0004-6361:20034243

M3 - Article

AN - SCOPUS:1842638169

SN - 0004-6361

VL - 417

SP - 695

EP - 699

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 2

ER -

Photo-ionization induced rapid grain growth in novae

Abstract

Keywords

Publisher link

Find It

Other files and links

Fingerprint

Cite this