ScholarLens Back to search
1992•Unpublished venueRequires access

A cloudy circumstellar dust shell around SV Cephei

C. Friedemann, H. G. Reimann, J. Gürtler

Open publisher page 4 citations

Abstract

SV Cephei (≡+72°1031) is an evolutionarily young and irregularily variable star coinciding with the infrared point source IRAS 22205+7325. An analysis of the photometric data revealed four components of different time scales and amplitudes in the lightcurve.We explain this composite variability by a circumstellar dust envelope which consists of a large number of individual clouds. A detailed analysis of selected fadings of the star convincingly points to at least three different grain populations in these clouds. The observed infrared excess supports the circumstellar origin of the optical variability

About this research paper

What this paper is about

SV Cephei (≡+72°1031) is an evolutionarily young and irregularily variable star coinciding with the infrared point source IRAS 22205+7325. An analysis of the photometric data revealed four components of different time scales and amplitudes in the lightcurve.We explain this composite variability by a circumstellar dust envelope which consists of a large number of individual clouds. A detailed analysis of selected fadings of the star convincingly points to at least three different grain populations in these clouds. The observed infrared excess supports the circumstellar origin of the optical variability

Why it matters

OpenAlex reports 4 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

SV Cephei (≡+72°1031) is an evolutionarily young and irregularily variable star coinciding with the infrared point source IRAS 22205+7325. An analysis of the photometric data revealed four components of different time scales and amplitudes in the lightcurve.We explain this composite variability by a circumstellar dust envelope which consists of a large number of individual clouds. A detailed analysis of selected fadings of the star convincingly points to at least three different grain populations in these clouds. The observed infrared excess supports the circumstellar origin of the optical variability

Key concepts: Physics, Astrophysics, Circumstellar envelope, Circumstellar dust, Infrared excess, Variable star, Astronomy, Infrared

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
A cloudy circumstellar dust shell around SV Cephei — Research Paper | ScholarLens