The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data

D Baines; RD Oudmaijer; A Mora; C Eiroa; John M Porter; B Merín; B Montesinos; D de Winter; Andrew Collier Cameron; JK Davies; HJ Deeg; R Ferlet; F Garzon; CA Grady; AW Harris; MG Hoare; Keith Douglas Horne; SL Lumsden; LF Miranda; J Palacios; A Penny; A Quirrenbach; H Rauer; J Schneider; E Solano; PR Wesselius

doi:10.1111/j.1365-2966.2004.08104.x

The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data

D Baines, RD Oudmaijer, A Mora, C Eiroa, John M Porter, B Merín, B Montesinos, D de Winter, Andrew Collier Cameron, JK Davies, HJ Deeg, R Ferlet, F Garzon, CA Grady, AW Harris, MG Hoare, Keith Douglas Horne, SL Lumsden, LF Miranda, J PalaciosA Penny, A Quirrenbach, H Rauer, J Schneider, E Solano, PR Wesselius

School of Physics and Astronomy

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Abstract

In this paper we present multi-epoch observations of the pre-main-sequence binary HK Ori. These data have been drawn from the EXPORT data base and are complemented by high-quality spectro-astrometric data of the system. The spectroscopic data appear to be very well represented by a combination of an A dwarf star spectrum superposed on a (sub)giant G-type spectrum. The radial velocity of the system is consistent with previous determinations, and does not reveal binary motion, as expected for a wide binary. The spectral, photometric and polarimetric properties and variability of the system indicate that the active object in the system is a T Tauri star with UX Ori characteristics. The spectro-astrometry of HK Ori is sensitive down to milliarcsecond scales and confirms the speckle interferometric results from Leinert et al. The spectro-astrometry allows the identification, with fair certainty, of the active star within the binary, which we suggest to be a G-type T Tauri star based on its spectral characteristics.

Original language	English
Pages (from-to)	697-704
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	353
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2004.08104.x
Publication status	Published - 11 Sept 2004

Keywords

techniques : spectroscopic
binaries : spectroscopic
stars : individual : HK Ori
stars : pre-main-sequence
T-TAURI STARS
HERBIG AE/BE STARS
VEGA-TYPE
EMISSION
ACCRETION
SEARCH
VARIABILITY
ORIONIS
DUST
AE

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10.1111/j.1365-2966.2004.08104.x

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Baines, D., Oudmaijer, RD., Mora, A., Eiroa, C., Porter, J. M., Merín, B., Montesinos, B., de Winter, D., Cameron, A. C., Davies, JK., Deeg, HJ., Ferlet, R., Garzon, F., Grady, CA., Harris, AW., Hoare, MG., Horne, K. D., Lumsden, SL., Miranda, LF., ... Wesselius, PR. (2004). The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data. Monthly Notices of the Royal Astronomical Society, 353(2), 697-704. https://doi.org/10.1111/j.1365-2966.2004.08104.x

@article{cab1ea39e29342f895ba05700cfcf651,

title = "The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data",

abstract = "In this paper we present multi-epoch observations of the pre-main-sequence binary HK Ori. These data have been drawn from the EXPORT data base and are complemented by high-quality spectro-astrometric data of the system. The spectroscopic data appear to be very well represented by a combination of an A dwarf star spectrum superposed on a (sub)giant G-type spectrum. The radial velocity of the system is consistent with previous determinations, and does not reveal binary motion, as expected for a wide binary. The spectral, photometric and polarimetric properties and variability of the system indicate that the active object in the system is a T Tauri star with UX Ori characteristics. The spectro-astrometry of HK Ori is sensitive down to milliarcsecond scales and confirms the speckle interferometric results from Leinert et al. The spectro-astrometry allows the identification, with fair certainty, of the active star within the binary, which we suggest to be a G-type T Tauri star based on its spectral characteristics.",

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author = "D Baines and RD Oudmaijer and A Mora and C Eiroa and Porter, {John M} and B Mer{\'i}n and B Montesinos and {de Winter}, D and Cameron, {Andrew Collier} and JK Davies and HJ Deeg and R Ferlet and F Garzon and CA Grady and AW Harris and MG Hoare and Horne, {Keith Douglas} and SL Lumsden and LF Miranda and J Palacios and A Penny and A Quirrenbach and H Rauer and J Schneider and E Solano and PR Wesselius",

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month = sep,

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doi = "10.1111/j.1365-2966.2004.08104.x",

language = "English",

volume = "353",

pages = "697--704",

journal = "Monthly Notices of the Royal Astronomical Society",

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Baines, D, Oudmaijer, RD, Mora, A, Eiroa, C, Porter, JM, Merín, B, Montesinos, B, de Winter, D, Cameron, AC, Davies, JK, Deeg, HJ, Ferlet, R, Garzon, F, Grady, CA, Harris, AW, Hoare, MG, Horne, KD, Lumsden, SL, Miranda, LF, Palacios, J, Penny, A, Quirrenbach, A, Rauer, H, Schneider, J, Solano, E & Wesselius, PR 2004, 'The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data', Monthly Notices of the Royal Astronomical Society, vol. 353, no. 2, pp. 697-704. https://doi.org/10.1111/j.1365-2966.2004.08104.x

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T1 - The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data

AU - Baines, D

AU - Oudmaijer, RD

AU - Mora, A

AU - Eiroa, C

AU - Porter, John M

AU - Merín, B

AU - Montesinos, B

AU - de Winter, D

AU - Cameron, Andrew Collier

AU - Davies, JK

AU - Deeg, HJ

AU - Ferlet, R

AU - Garzon, F

AU - Grady, CA

AU - Harris, AW

AU - Hoare, MG

AU - Horne, Keith Douglas

AU - Lumsden, SL

AU - Miranda, LF

AU - Palacios, J

AU - Penny, A

AU - Quirrenbach, A

AU - Rauer, H

AU - Schneider, J

AU - Solano, E

AU - Wesselius, PR

PY - 2004/9/11

Y1 - 2004/9/11

N2 - In this paper we present multi-epoch observations of the pre-main-sequence binary HK Ori. These data have been drawn from the EXPORT data base and are complemented by high-quality spectro-astrometric data of the system. The spectroscopic data appear to be very well represented by a combination of an A dwarf star spectrum superposed on a (sub)giant G-type spectrum. The radial velocity of the system is consistent with previous determinations, and does not reveal binary motion, as expected for a wide binary. The spectral, photometric and polarimetric properties and variability of the system indicate that the active object in the system is a T Tauri star with UX Ori characteristics. The spectro-astrometry of HK Ori is sensitive down to milliarcsecond scales and confirms the speckle interferometric results from Leinert et al. The spectro-astrometry allows the identification, with fair certainty, of the active star within the binary, which we suggest to be a G-type T Tauri star based on its spectral characteristics.

AB - In this paper we present multi-epoch observations of the pre-main-sequence binary HK Ori. These data have been drawn from the EXPORT data base and are complemented by high-quality spectro-astrometric data of the system. The spectroscopic data appear to be very well represented by a combination of an A dwarf star spectrum superposed on a (sub)giant G-type spectrum. The radial velocity of the system is consistent with previous determinations, and does not reveal binary motion, as expected for a wide binary. The spectral, photometric and polarimetric properties and variability of the system indicate that the active object in the system is a T Tauri star with UX Ori characteristics. The spectro-astrometry of HK Ori is sensitive down to milliarcsecond scales and confirms the speckle interferometric results from Leinert et al. The spectro-astrometry allows the identification, with fair certainty, of the active star within the binary, which we suggest to be a G-type T Tauri star based on its spectral characteristics.

KW - techniques : spectroscopic

KW - binaries : spectroscopic

KW - stars : individual : HK Ori

KW - stars : pre-main-sequence

KW - T-TAURI STARS

KW - HERBIG AE/BE STARS

KW - VEGA-TYPE

KW - EMISSION

KW - ACCRETION

KW - SEARCH

KW - VARIABILITY

KW - ORIONIS

KW - DUST

KW - AE

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U2 - 10.1111/j.1365-2966.2004.08104.x

DO - 10.1111/j.1365-2966.2004.08104.x

M3 - Article

SN - 0035-8711

VL - 353

SP - 697

EP - 704

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The pre-main-sequence binary HK Ori: spectro-astrometry and EXPORT data

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Keywords

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