Rotationally modulated variations and the mean longitudinal magnetic field of the Herbig Ae star HD 101412

HUBRIG, Swetlana, Zdeněk MIKULÁŠEK, J. M. GONZÁLES, Marcus SCHÖLLER, I. ILYIN, M. CURÉ, Miloslav ZEJDA, Charles R. COWLEY, V. G. ELKIN, M. A. POGODIN and R. V. YUDIN. Rotationally modulated variations and the mean longitudinal magnetic field of the Herbig Ae star HD 101412. Astronomy and Astrophysics. Les Ulis Cedex, France: EDP Sciences, 2011, vol. 525, L4, p. 1-6. ISSN 0004-6361. Available from: https://dx.doi.org/10.1051/0004-6361/201015806.

Basic information

• Original name: Rotationally modulated variations and the mean longitudinal magnetic field of the Herbig Ae star HD 101412
• Name in Czech: Rotačně modulované variace a střední podélné magnetické pole Herbigovy Ae hvězdy HD 101412
• Authors: HUBRIG, Swetlana (276 Germany), Zdeněk MIKULÁŠEK (203 Czech Republic, guarantor, belonging to the institution), J. M. GONZÁLES (32 Argentina), Marcus SCHÖLLER (276 Germany), I. ILYIN (643 Russian Federation), M. CURÉ (32 Argentina), Miloslav ZEJDA (203 Czech Republic, belonging to the institution), Charles R. COWLEY (840 United States of America), V. G. ELKIN (643 Russian Federation), M. A. POGODIN (643 Russian Federation) and R. V. YUDIN (643 Russian Federation).
• Edition: Astronomy and Astrophysics, Les Ulis Cedex, France, EDP Sciences, 2011, 0004-6361.

Other information

• Original 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: 4.587
• RIV identification code: RIV/00216224:14310/11:00049659
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1051/0004-6361/201015806
• UT WoS: 000285193700162
• Keywords (in Czech): hvězdy: atmosféry - hvězdy: individuální: HD 101412 - hvězdy: proměnné: obecně - hvězdy: rotace
• Keywords in English: stars: magnetic field - stars: pre-main sequence - stars: atmospheres - stars: individual: HD 101412 - stars: variables: general - stars: rotation
• Tags: AKR, rivok
• Tags: International impact, Reviewed

Abstract

Despite the importance of magnetic fields to a full understanding of the properties of accreting Herbig Ae/Be stars, these fields have scarcely been studied until now over the rotation cycle. One reason for the paucity of these observations is the lack of knowledge of their rotation periods. The sharp-lined young Herbig Ae star HD 101412 with a strong surface magnetic field has become in the past few years one of the most well-studied targets among the Herbig Ae/Be stars. We present our multi-epoch polarimetric spectra of this star acquired with FORS 2 to search for a rotation period and constrain the geometry of the magnetic field. Methods: We measured longitudinal magnetic fields for 13 different epochs distributed over 62 days. These new measurements and our previous measurements of the magnetic field in this star were combined with available photometric observations to determine the rotation period. Results: We find the rotation period to be P = 42.076+/-0.017 d.

Links

• GA205/08/0003, research and development project: Name: Předpovědi rychlosti ztráty hmoty horkých hvězd

Investor: Czech Science Foundation, Mass-loss rate predictions for hot stars

• MEB0810095, research and development project: Name: Nové trendy ve výzkumu geometricky proměnných hvězd

Investor: Ministry of Education, Youth and Sports of the CR, Programme KONTAKT - mobilities (MEB)