A size distribution of silicate grains in Eta Carinae

Carty, T.; Perkins, H. G.; Warren-Smith, R. F.; Scarrott, S. M.

doi:10.1093/mnras/189.2.299

Cited by 3 publications

(1 citation statement)

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“…In the present model the maximum polarization observed in the northwest lobe is reduced below this value primarily because of scattering from the northwest cap, which dilutes the light scattered from the wall. plest explanation is that the dust in the Homunculus is generally smaller than we assumed, a result consistent with that found by Carty et al (1979) in their earlier analysis. Since most grain distributions produce the peak polariza- FIG.…”

Section: Model Resultssupporting

confidence: 92%

[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of η Carinae

Schulte-Ladbeck

Pasquali

Clampin

et al. 1999

The Astronomical Journal

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Linear polarization measurements have been a key to our understanding of the massive star system g Carinae and its surrounding Homunculus nebula. We here present the results of (linear) polarimetric imaging of g Carinae in the V band (F555W) with the Hubble Space T elescopeÏs Wide Field Planetary Camera 2 (HST /WFPC2). The data agree well with previous ground-based measurements of the largescale polarization across the Homunculus, allowing us to conÐrm that it is primarily a reÑection nebula. The HST observations add information on the variation of the polarization across the lobes on small spatial scales. We provide measurements of the polarization in a variety of structures such as the jet, the skirt, the paddle, the southern ridge, and the spot, and discuss the properties of the polarization of the Homunculus on large and small spatial scales. Using a simple Mie-scattering model, we argue that of three previously proposed geometries for the three-dimensional structure of the Homunculus only the double-Ñask geometry represents a dust distribution which is consistent with our polarization map.

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Section: Model Resultssupporting

confidence: 92%

[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of η Carinae

Schulte-Ladbeck

Pasquali

Clampin

et al. 1999

The Astronomical Journal

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AHubble Space TelescopePolarization Study of Dust in the η Carinae Homunculus

King

Nota

Walsh

et al. 2002

ApJ

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Eta Carinae and Its Environment

Davidson

Humphreys

1997

Annu. Rev. Astron. Astrophys.

376

195

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▪ Abstract Eta Carinae (Eta) is one of the most remarkable of all well-studied stars and perhaps the most poorly understood. Observations with the Hubble Space Telescope and other modern instruments have solved a few of the mysteries concerning this object while opening a comparable number of new ones. In this review we first recount some essential background information concerning Eta, then we sketch most of the observational developments of the past few years, related to the star itself and to its ejecta. Throughout, we propose a series of specific unsolved observational and theoretical problems that seem especially interesting or important at this time.

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A size distribution of silicate grains in Eta Carinae

Cited by 3 publications

References 0 publications

[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of η Carinae

[ITAL]HUBBLE SPACE TELESCOPE[/ITAL][ITAL]Hubble Space Telescope[/ITAL] Imaging Polarimetry of η Carinae

AHubble Space TelescopePolarization Study of Dust in the η Carinae Homunculus

Eta Carinae and Its Environment

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