CaltechAUTHORS
  A Caltech Library Service

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

Ulla, A. and Zapatero Osorio, M. R. and Pérez Hernández, F. and MacDonald, J. (2001) CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes. Astronomy & Astrophysics, 369 (3). pp. 986-992. ISSN 0004-6361. https://resolver.caltech.edu/CaltechAUTHORS:20180307-064844266

[img] PDF - Published Version
See Usage Policy.

171Kb
[img] PDF - Submitted Version
See Usage Policy.

199Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20180307-064844266

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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1051/0004-6361:20010181DOIArticle
https://www.aanda.org/articles/aa/abs/2001/15/aa10085/aa10085.htmlPublisherArticle
http://adsabs.harvard.edu/abs/2001A%26A...369..986UADSArticle
https://arxiv.org/abs/astro-ph/0102142arXivDiscussion Paper
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).
Funders:
Funding AgencyGrant Number
Departmento Governmental de Investigaciónes Cientificas y Técnológicas (DGICYT)PB97-1435-C02-02
Departmento Governmental de Investigaciónes Cientificas y Técnológicas (DGICYT)AYA2000-1691
Subject Keywords:binaries: close - stars: individual: PG 0856+121 - stars: scillations - subdwarfs
Issue or Number:3
Record Number:CaltechAUTHORS:20180307-064844266
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180307-064844266
Official Citation:CCD-based observations of PG 0856+121 and a theoretical analysis of its oscillation modes A. Ulla, M. R. Zapatero Osorio, F. Pérez Hernández and J. MacDonald A&A, 369 3 (2001) 986-992 DOI: https://doi.org/10.1051/0004-6361:20010181
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85151
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:07 Mar 2018 17:43
Last Modified:03 Oct 2019 19:27

Repository Staff Only: item control page