CaltechAUTHORS
Published April 3, 2001 | Version Published + Submitted
Journal Article Open

CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes

Creators

  • 1. ROR icon Universidade de Vigo
  • 2. ROR icon Instituto de Astrofísica de Canarias
  • 3. ROR icon California Institute of Technology
  • 4. ROR icon University of La Laguna
  • 5. ROR icon University of Delaware

Abstract

BVRI CCD-based and near-IR (J) imaging, together with unfiltered photometry of the hot subdwarf B star PG 0856+121, are reported. Two close, faint, red, point-like sources are resolved. They account for the previously reported IR excess observed in this hot subdwarf. In addition, the new unfiltered differential photometry of PG 0856+121 confirms its previously reported pulsational nature. A comparison with the oscillation modes of stellar models suggests the presence of g modes.

Additional Information

© 2001 ESO. Received: 5 July 2000. Accepted: 29 January 2001 The authors are grateful to V.J.S. Béjar for his assistance in obtaining the J images at the CST on November 25, 2000. Ana Ulla acknowledges support from the Spanish MEC DGESIC under contract PB97-1435-C02-02 and from the Spanish MCT DGI under contract AYA2000-1691. This research made use of the SIMBAD database, operated at CDS, Strasbourg, France and of the NASA Astrophysics Data System (ADS).

Attached Files

Published - aa10085.pdf

Submitted - 0102142.pdf

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0102142.pdf

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Additional details

Identifiers

Eprint ID
85151
Resolver ID
CaltechAUTHORS:20180307-064844266

Related works

Describes
http://adsabs.harvard.edu/abs/2001A%26A...369..986U (URL)
https://arxiv.org/abs/astro-ph/0102142 (URL)

Funding

Departmento Governmental de Investigaciónes Cientificas y Técnológicas (DGICYT)
PB97-1435-C02-02
Departmento Governmental de Investigaciónes Cientificas y Técnológicas (DGICYT)
AYA2000-1691

Dates

Created
2018-03-07
Created from EPrint's datestamp field
Updated
2021-11-15
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