eprintid: 10096040
rev_number: 17
eprint_status: archive
userid: 608
dir: disk0/10/09/60/40
datestamp: 2020-11-30 08:48:10
lastmod: 2021-12-13 01:37:32
status_changed: 2021-02-23 14:52:27
type: article
metadata_visibility: show
creators_name: Sylvester, RJ
creators_name: Dunkin, SK
creators_name: Barlow, MJ
title: SCUBA photometry of candidate Vega-like sources
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F60
keywords: circumstellar matter, infrared: stars
note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: New SCUBA measurements at millimetre wavelengths are presented for a sample of Vega-like stars. Six stars were detected, while sensitive upper limits were obtained for a further 11 sources. Most of the sample selected from a recent catalogue of Vega-like stars have infrared excesses similar to those of the prototype Vega-like stars α Lyr and α PsA. Their IR–submm spectral indices are steep, indicating that the submm emission from the discs is dominated by grains which are smaller than the wavelength of observation and that only small grains exist in those dusty discs. HD 98800 has an IR–submillimetre spectral index of less than two, which suggests that grains have grown to more than 0.3 mm in size. Hipparcos parallax data for HD 42137 and HD 123160 suggest that these two stars are giants rather than dwarfs, similar to the situation previously found for HD 233517. Dust masses, or upper limits, were derived for the sample; these indicate that most of the sources do not have as much dust as Herbig Ae/Be or T Tauri stars, but are likely to have dust masses comparable to those of the prototype Vega-like stars.
date: 2001-10
date_type: published
publisher: WILEY-BLACKWELL
official_url: https://doi.org/10.1046/j.1365-8711.2001.04672.x
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 21233
doi: 10.1046/j.1365-8711.2001.04672.x
lyricists_name: Barlow, Michael
lyricists_id: MJBAR75
actors_name: Barlow, Michael
actors_id: MJBAR75
actors_role: owner
full_text_status: public
publication: Monthly Notices of the Royal Astronomical Society
volume: 327
number: 1
pagerange: 133-140
pages: 8
issn: 0035-8711
citation:        Sylvester, RJ;    Dunkin, SK;    Barlow, MJ;      (2001)    SCUBA photometry of candidate Vega-like sources.                   Monthly Notices of the Royal Astronomical Society , 327  (1)   pp. 133-140.    10.1046/j.1365-8711.2001.04672.x <https://doi.org/10.1046/j.1365-8711.2001.04672.x>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10096040/1/sylvester01_scubavegaMNRAS327_133.pdf