The AB Doradus system revisited: The dynamical mass of AB Dor A

J. C. Guirado, I. Martí-Vidal, J. M. Marcaide, Laird M Close, J. F. Lestrade, D. L. Jauncey, S. Jiménez-Monferrer, D. L. Jones, R. A. Preston, J. E. Reynolds

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We report new radio interferometric observations of the quadruple pre-main-sequence (PMS) system AB Doradus. From these observations, combined with existing VLT near-infrared relative astrometry, we have refined the estimates of the dynamical masses of the system. In particular, we find component masses of 0:86 ± 0:09M and 0:090 ± 0:003M for AB Dor A and AB Dor C, respectively. These dynamical masses, coupled with temperatures and luminosities, allow for comparison with theoretical stellar models. The case of AB Dor C, in terms of calibration of evolutionary models of low-mass young stars has been widely reported in previous studies. In this contribution, we compare the measured properties of ABDorA with several solar-composition models for PMS stars. The models used in this comparison predict the dynamical mass to within the quoted uncertainties.

Original languageEnglish (US)
Title of host publicationAstrophysics and Space Science Proceedings
PublisherKluwer Academic Publishers
Pages139-145
Number of pages7
ISBN (Print)9783642112492
DOIs
StatePublished - 2010
Event8th Scientific Meeting of the Spanish Astronomical Society, SEA 2008 - Santander, Spain
Duration: Jul 7 2008Jul 11 2008

Other

Other8th Scientific Meeting of the Spanish Astronomical Society, SEA 2008
CountrySpain
CitySantander
Period7/7/087/11/08

Fingerprint

pre-main sequence stars
stellar models
astrometry
radio observation
luminosity
stars
estimates
temperature

ASJC Scopus subject areas

  • Astronomy and Astrophysics

Cite this

Guirado, J. C., Martí-Vidal, I., Marcaide, J. M., Close, L. M., Lestrade, J. F., Jauncey, D. L., ... Reynolds, J. E. (2010). The AB Doradus system revisited: The dynamical mass of AB Dor A. In Astrophysics and Space Science Proceedings (pp. 139-145). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-642-11250-8-13

The AB Doradus system revisited : The dynamical mass of AB Dor A. / Guirado, J. C.; Martí-Vidal, I.; Marcaide, J. M.; Close, Laird M; Lestrade, J. F.; Jauncey, D. L.; Jiménez-Monferrer, S.; Jones, D. L.; Preston, R. A.; Reynolds, J. E.

Astrophysics and Space Science Proceedings. Kluwer Academic Publishers, 2010. p. 139-145.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Guirado, JC, Martí-Vidal, I, Marcaide, JM, Close, LM, Lestrade, JF, Jauncey, DL, Jiménez-Monferrer, S, Jones, DL, Preston, RA & Reynolds, JE 2010, The AB Doradus system revisited: The dynamical mass of AB Dor A. in Astrophysics and Space Science Proceedings. Kluwer Academic Publishers, pp. 139-145, 8th Scientific Meeting of the Spanish Astronomical Society, SEA 2008, Santander, Spain, 7/7/08. https://doi.org/10.1007/978-3-642-11250-8-13
Guirado JC, Martí-Vidal I, Marcaide JM, Close LM, Lestrade JF, Jauncey DL et al. The AB Doradus system revisited: The dynamical mass of AB Dor A. In Astrophysics and Space Science Proceedings. Kluwer Academic Publishers. 2010. p. 139-145 https://doi.org/10.1007/978-3-642-11250-8-13
Guirado, J. C. ; Martí-Vidal, I. ; Marcaide, J. M. ; Close, Laird M ; Lestrade, J. F. ; Jauncey, D. L. ; Jiménez-Monferrer, S. ; Jones, D. L. ; Preston, R. A. ; Reynolds, J. E. / The AB Doradus system revisited : The dynamical mass of AB Dor A. Astrophysics and Space Science Proceedings. Kluwer Academic Publishers, 2010. pp. 139-145
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AB - We report new radio interferometric observations of the quadruple pre-main-sequence (PMS) system AB Doradus. From these observations, combined with existing VLT near-infrared relative astrometry, we have refined the estimates of the dynamical masses of the system. In particular, we find component masses of 0:86 ± 0:09M⊙ and 0:090 ± 0:003M⊙ for AB Dor A and AB Dor C, respectively. These dynamical masses, coupled with temperatures and luminosities, allow for comparison with theoretical stellar models. The case of AB Dor C, in terms of calibration of evolutionary models of low-mass young stars has been widely reported in previous studies. In this contribution, we compare the measured properties of ABDorA with several solar-composition models for PMS stars. The models used in this comparison predict the dynamical mass to within the quoted uncertainties.

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