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Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569

Merín, B. and Montesinos, B. and Eiroa, C. and Solano, E. and Mora, A. and D'Alessio, P. and Calvet, N. and Oudmaijer, R. D. and Winter, D. de and Davies, J. K. and Harris, A. W. and Cameron, A. and Deeg, H. J. and Ferlet, R. and Garzón, F. and Grady, C. A. and Horne, K. and Miranda, L. F. and Palacios, J. and Penny, A. and Quirrenbach, A. and Rauer, H. and Schneider, J. and Wesselius, P. R. (2004) Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569. Astronomy and Astrophysics, 419 (1), pp. 301-318. DOI: 10.1051/0004-6361:20034561

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Abstract

We present an study of the stellar parameters, disctance and spectral energy distributions (SEDs) of HD 34282 and HD 141569, two pre-main sequence Herbig AeBe stars. Both objects have been reported to show "anomalous positions" in the HRD diagram in the sense that they appear below the main sequence. A significant result of this work is that both stars are metal-deficient. The Hipparcos distance of HD 34282 is very uncertain and the current stdy places the star at the expected evolutionary position in the HRD diagram, i.e. as a PMS star. The distance for HD 141569 found in this work matches the Hipparcos distance, and the problem of its anomalous position is solved as a result of the low metallicity of the object: using the right metallicity tracks, the star is in the PMS region. The SEDs are constructed using data covering ultraviolett to millimetre wavelengths. Physical, non-parametric models, have been applied in order to extract some properties of the disks surrounding the stars. The disk arount HD 34282 is actreting actively, it is massive and presents large grains in the mid-plane and small grains in the surface. HD 141569 has a very low mass disk, which is in an intermediate state towards a debris-type disk.

Item URL in elib:https://elib.dlr.de/10962/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Study of the properties and spectral energy distributions of the Herbig AeBe stars HD 34282 and HD 141569
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Merín, B.Laboratorio de Astrofísica Espacial y Física Fundamental, LAEFF; Madrid, SpainUNSPECIFIED
Montesinos, B.Instituto de Astrofísica de Andalucía-CSIC, Granada, Spain; Laboratorio de Astrofísica Espacial y Física Fundamental, LAEFF; Madrid, SpainUNSPECIFIED
Eiroa, C.Departamento de Física Teórica, Módulo C-XI, Universidad Autónoma de Madrid, Madrid, SpainUNSPECIFIED
Solano, E.Laboratorio de Astrofísica Espacial y Física Fundamental, LAEFF; Madrid, SpainUNSPECIFIED
Mora, A.Departamento de Física Teórica, Módulo C-XI, Universidad Autónoma de Madrid, Madrid, SpainUNSPECIFIED
D'Alessio, P.Centro de Radioastronomía y Astrofísica, Morelia, MexicoUNSPECIFIED
Calvet, N.Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USAUNSPECIFIED
Oudmaijer, R. D.Department of Physics and Astronomy, University of Leeds, Leeds, UKUNSPECIFIED
Winter, D. deTNO/TPD-Space Instrumentation, Delft, The NetherlandsUNSPECIFIED
Davies, J. K.Astronomy Technology Centre, Royal Observatory, Edinburgh, UKUNSPECIFIED
Harris, A. W.UNSPECIFIEDUNSPECIFIED
Cameron, A.Department of Physics and Astronomy, University of St. Andrews, St. Andrews, Scotland, UKUNSPECIFIED
Deeg, H. J.Instituto de Astrofísica de Canarias, La Laguna, Tenerife, SpainUNSPECIFIED
Ferlet, R.CNRS, Institute d'Astrophysique de Paris, Paris, FranceUNSPECIFIED
Garzón, F.Instituto de Astrofísica de Canarias, La Laguna, Tenerife, SpainUNSPECIFIED
Grady, C. A.NOAO/STIS, Goddard Space Flight Center, Greenbelt, MD, USAUNSPECIFIED
Horne, K.Department of Physics and Astronomy, University of St. Andrews, St. Andrews, Scotland, UKUNSPECIFIED
Miranda, L. F.Instituto de Astrofísica de Andalucía-CSIC, Granada, SpainUNSPECIFIED
Palacios, J.Departamento de Física Teórica, Módulo C-XI, Universidad Autónoma de Madrid, Madrid, SpainUNSPECIFIED
Penny, A.Rutherford Appleton Laboratory, Oxfordshire, UKUNSPECIFIED
Quirrenbach, A.Sterrewacht Leiden, Leiden, The NetherlandsUNSPECIFIED
Rauer, H.UNSPECIFIEDUNSPECIFIED
Schneider, J.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Wesselius, P. R.SRON, Universiteitscomplex "Zernike", Groningen, The NetherlandsUNSPECIFIED
Date:2004
Journal or Publication Title:Astronomy and Astrophysics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:419
DOI :10.1051/0004-6361:20034561
Page Range:pp. 301-318
Status:Published
Keywords:stars: pre-main sequence - Stars: fundamental parameters - stars: planetary systems: protoplanetary disks
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):UNSPECIFIED
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research
Deposited By: DLR-Beauftragter, elib
Deposited On:08 Dec 2005
Last Modified:14 Jan 2010 16:34

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