The Hvar survey for roAp stars (Research Note) I. The survey
observations

J 2012

The Hvar survey for roAp stars (Research Note) I. The survey observations

PAUNZEN, Ernst; Martin NETOPIL; M. RODE-PAUNZEN; Gerald HANDLER; Hrvoje BOZIC et. al.

Basic information

Original name

The Hvar survey for roAp stars (Research Note) I. The survey observations

Authors

PAUNZEN, Ernst (40 Austria, guarantor, belonging to the institution); Martin NETOPIL (40 Austria); M. RODE-PAUNZEN (40 Austria); Gerald HANDLER (40 Austria); Hrvoje BOZIC (191 Croatia); D. RUZDJAK (191 Croatia) and D. SUDAR (191 Croatia)

Edition

Astronomy and Astrophysics, Paris, EDP Sciences, 2012, 0004-6361

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

France

Confidentiality degree

is not subject to a state or trade secret

Impact factor

Impact factor: 5.084

RIV identification code

RIV/00216224:14310/12:00058301

Organization unit

Faculty of Science

DOI

https://doi.org/10.1051/0004-6361/201118752

UT WoS

000305803300076

Keywords in English

stars: chemically peculiar; stars: variables: general; stars: early-type; stars: oscillations

Abstract

In the original language

Context. The rapidly oscillating Ap (roAp) stars exhibit short time scale photometric and/or radial velocity variations, which are most important to test current pulsation models as well as our assumptions of the atmospheric structure characteristics. In addition, their chemical peculiarity makes them very interesting for probing stellar formation and evolution in the presence of a global magnetic field. To date, only a limited number of about 45 roAp stars are known. Aims. In order to increase the sample, we obtained photometric time series of 20 good roAp candidates to search for pulsations. Methods. We present the time series analysis of about 60 h of CCD photometry taken at the 1 m Austrian-Croatian Telescope (Hvar Observatory) and derive effective temperatures for the programme objects. Results. The upper amplitude limits of the Fourier spectra are typically below 2 mmag in Bessell B with one good candidate for follow-up observations to find possible pulsation. In addition, we present a list of further roAp candidates, worth to be (re) investigated.

Links

GAP209/12/0217, research and development project

Name: Multispektrální proměnnost horkých hvězd a její příčiny

Investor: Czech Science Foundation

Cite

PAUNZEN, Ernst; Martin NETOPIL; M. RODE-PAUNZEN; Gerald HANDLER; Hrvoje BOZIC; D. RUZDJAK and D. SUDAR. The Hvar survey for roAp stars (Research Note) I. The survey observations. Astronomy and Astrophysics. Paris: EDP Sciences, 2012, vol. 542, June, p. "A89"-"A94", 6 pp. ISSN 0004-6361. Available from: https://doi.org/10.1051/0004-6361/201118752.

@article{1083554,
   author = {Paunzen, Ernst and Netopil, Martin and RodeandPaunzen, M. and Handler, Gerald and Bozic, Hrvoje and Ruzdjak, D. and Sudar, D.},
   article_location = {Paris},
   article_number = {June},
   doi = {https://doi.org/10.1051/0004-6361/201118752},
   keywords = {stars: chemically peculiar; stars: variables: general; stars: early-type; stars: oscillations},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {The Hvar survey for roAp stars (Research Note) I. The survey observations},
   volume = {542},
   year = {2012}
}

TY  - JOUR
ID  - 1083554
AU  - Paunzen, Ernst - Netopil, Martin - Rode-Paunzen, M. - Handler, Gerald - Bozic, Hrvoje - Ruzdjak, D. - Sudar, D.
PY  - 2012
TI  - The Hvar survey for roAp stars (Research Note) I. The survey observations
JF  - Astronomy and Astrophysics
VL  - 542
IS  - June
SP  - "A89"-"A94"
EP  - "A89"-"A94"
PB  - EDP Sciences
SN  - 00046361
KW  - stars: chemically peculiar
KW  - stars: variables: general
KW  - stars: early-type
KW  - stars: oscillations
N2  - Context. The rapidly oscillating Ap (roAp) stars exhibit short time scale photometric and/or radial velocity variations, which are most important to test current pulsation models as well as our assumptions of the atmospheric structure characteristics. In addition, their chemical peculiarity makes them very interesting for probing stellar formation and evolution in the presence of a global magnetic field. To date, only a limited number of about 45 roAp stars are known. Aims. In order to increase the sample, we obtained photometric time series of 20 good roAp candidates to search for pulsations. Methods. We present the time series analysis of about 60 h of CCD photometry taken at the 1 m Austrian-Croatian Telescope (Hvar Observatory) and derive effective temperatures for the programme objects. Results. The upper amplitude limits of the Fourier spectra are typically below 2 mmag in Bessell B with one good candidate for follow-up observations to find possible pulsation. In addition, we present a list of further roAp candidates, worth to be (re) investigated.
ER  -

PAUNZEN, Ernst; Martin NETOPIL; M. RODE-PAUNZEN; Gerald HANDLER; Hrvoje BOZIC; D. RUZDJAK and D. SUDAR. The Hvar survey for roAp stars (Research Note) I. The survey observations. \textit{Astronomy and Astrophysics}. Paris: EDP Sciences, 2012, vol.~542, June, p.~''A89''-''A94'', 6 pp. ISSN~0004-6361. Available from: https://doi.org/10.1051/0004-6361/201118752.

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