Chemical tracers of a highly eccentric AGB-main-sequence star binary

T. Danilovich; J. Malfait; M. Van de Sande; M Montarges; Pierre  Kervella; Frederik  De Ceuster; A Coenegrachts; T. J. Millar; A M S Richards; L Decin; Carl A.  Gottlieb; C Pinte; E De Beck; D J  Price; K T Wong; J Bolte; K Menten; A Baudry; A de Koter; Sandra  Etoka; D. Gobrecht; Malcolm Gray; Fabrice  Herpin; Manali  Jeste; E. Lagadec; Silke  Maes; L. Marinho; H. S. P. Müller; B Pimpanuwat; John  Plane; Raghvendra  Sahai; S. H. J. Wallstrom; Jeremy A. Yates; Albert A. Zijlstra

doi:10.1038/s41550-023-02154-y

Chemical tracers of a highly eccentric AGB-main-sequence star binary

T. Danilovich^*
, J. Malfait
, M. Van de Sande
, M Montarges
, Pierre Kervella
, Frederik De Ceuster
, A Coenegrachts
, T. J. Millar
, A M S Richards
, L Decin
, Carl A. Gottlieb
, C Pinte
, E De Beck
, D J Price
, K T Wong
, J Bolte
, K Menten
, A Baudry
, A de Koter
, Sandra Etoka

D. Gobrecht, Malcolm Gray, Fabrice Herpin, Manali Jeste, E. Lagadec, Silke Maes, L. Marinho, H. S. P. Müller, B Pimpanuwat, John Plane, Raghvendra Sahai, S. H. J. Wallstrom, Jeremy A. Yates, Albert A. Zijlstra

^*Corresponding author for this work

School of Mathematics and Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

134 Downloads (Pure)

Abstract

Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes
of AGB stars have revealed spirals, disks and bipolar outflows, with shaping attributed to interactions with a companion. Here we use a combined chemical and dynamical analysis to reveal a highly eccentric and long-period orbit
for W Aquilae, a binary system containing an AGB star and a main-sequence companion. Our results are based on anisotropic SiN emission, the detections of irregular NS and SiC emission towards the S-type star, and density structures observed in the CO emission. These features are all interpreted as having formed during periastron interactions. Our astrochemistry-based method can yield stringent constraints on the orbital parameters of long-period binaries containing AGB stars, and will be applicable to other systems.

Original language	English
Pages (from-to)	308-327
Number of pages	20
Journal	Nature Astronomy
Volume	8
DOIs	https://doi.org/10.1038/s41550-023-02154-y
Publication status	Published - 03 Jan 2024

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Chemical tracers of a highly eccentric AGB-main-sequence star binary
Copyright 2024 The Authors This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
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Danilovich, T., Malfait, J., Sande, M. V. D., Montarges, M., Kervella, P., De Ceuster, F., Coenegrachts, A., Millar, T. J., Richards, A. M. S., Decin, L., Gottlieb, C. A., Pinte, C., De Beck, E., Price, D. J., Wong, K. T., Bolte, J., Menten, K., Baudry, A., de Koter, A., ... Zijlstra, A. A. (2024). Chemical tracers of a highly eccentric AGB-main-sequence star binary. Nature Astronomy, 8, 308-327. https://doi.org/10.1038/s41550-023-02154-y

@article{90fea63a285c47d6bf768dc94a2e75cc,

title = "Chemical tracers of a highly eccentric AGB-main-sequence star binary",

abstract = "Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes of AGB stars have revealed spirals, disks and bipolar outflows, with shaping attributed to interactions with a companion. Here we use a combined chemical and dynamical analysis to reveal a highly eccentric and long-period orbit for W Aquilae, a binary system containing an AGB star and a main-sequence companion. Our results are based on anisotropic SiN emission, the detections of irregular NS and SiC emission towards the S-type star, and density structures observed in the CO emission. These features are all interpreted as having formed during periastron interactions. Our astrochemistry-based method can yield stringent constraints on the orbital parameters of long-period binaries containing AGB stars, and will be applicable to other systems.",

author = "T. Danilovich and J. Malfait and Sande, \{M. Van de\} and M Montarges and Pierre Kervella and \{De Ceuster\}, Frederik and A Coenegrachts and Millar, \{T. J.\} and Richards, \{A M S\} and L Decin and Gottlieb, \{Carl A.\} and C Pinte and \{De Beck\}, E and Price, \{D J\} and Wong, \{K T\} and J Bolte and K Menten and A Baudry and \{de Koter\}, A and Sandra Etoka and D. Gobrecht and Malcolm Gray and Fabrice Herpin and Manali Jeste and E. Lagadec and Silke Maes and L. Marinho and M{\"u}ller, \{H. S. P.\} and B Pimpanuwat and John Plane and Raghvendra Sahai and Wallstrom, \{S. H. J.\} and Yates, \{Jeremy A.\} and Zijlstra, \{Albert A.\}",

year = "2024",

month = jan,

day = "3",

doi = "10.1038/s41550-023-02154-y",

language = "English",

volume = "8",

pages = "308--327",

journal = "Nature Astronomy",

issn = "2397-3366",

publisher = "Nature Publishing Group",

}

Danilovich, T, Malfait, J, Sande, MVD, Montarges, M, Kervella, P, De Ceuster, F, Coenegrachts, A, Millar, TJ, Richards, AMS, Decin, L, Gottlieb, CA, Pinte, C, De Beck, E, Price, DJ, Wong, KT, Bolte, J, Menten, K, Baudry, A, de Koter, A, Etoka, S, Gobrecht, D, Gray, M, Herpin, F, Jeste, M, Lagadec, E, Maes, S, Marinho, L, Müller, HSP, Pimpanuwat, B, Plane, J, Sahai, R, Wallstrom, SHJ, Yates, JA & Zijlstra, AA 2024, 'Chemical tracers of a highly eccentric AGB-main-sequence star binary', Nature Astronomy, vol. 8, pp. 308-327. https://doi.org/10.1038/s41550-023-02154-y

TY - JOUR

T1 - Chemical tracers of a highly eccentric AGB-main-sequence star binary

AU - Danilovich, T.

AU - Malfait, J.

AU - Sande, M. Van de

AU - Montarges, M

AU - Kervella, Pierre

AU - De Ceuster, Frederik

AU - Coenegrachts, A

AU - Millar, T. J.

AU - Richards, A M S

AU - Decin, L

AU - Gottlieb, Carl A.

AU - Pinte, C

AU - De Beck, E

AU - Price, D J

AU - Wong, K T

AU - Bolte, J

AU - Menten, K

AU - Baudry, A

AU - de Koter, A

AU - Etoka, Sandra

AU - Gobrecht, D.

AU - Gray, Malcolm

AU - Herpin, Fabrice

AU - Jeste, Manali

AU - Lagadec, E.

AU - Maes, Silke

AU - Marinho, L.

AU - Müller, H. S. P.

AU - Pimpanuwat, B

AU - Plane, John

AU - Sahai, Raghvendra

AU - Wallstrom, S. H. J.

AU - Yates, Jeremy A.

AU - Zijlstra, Albert A.

PY - 2024/1/3

Y1 - 2024/1/3

N2 - Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes of AGB stars have revealed spirals, disks and bipolar outflows, with shaping attributed to interactions with a companion. Here we use a combined chemical and dynamical analysis to reveal a highly eccentric and long-period orbit for W Aquilae, a binary system containing an AGB star and a main-sequence companion. Our results are based on anisotropic SiN emission, the detections of irregular NS and SiC emission towards the S-type star, and density structures observed in the CO emission. These features are all interpreted as having formed during periastron interactions. Our astrochemistry-based method can yield stringent constraints on the orbital parameters of long-period binaries containing AGB stars, and will be applicable to other systems.

AB - Binary interactions have been proposed to explain a variety of circumstellar structures seen around evolved stars, including asymptotic giant branch (AGB) stars and planetary nebulae. Studies resolving the circumstellar envelopes of AGB stars have revealed spirals, disks and bipolar outflows, with shaping attributed to interactions with a companion. Here we use a combined chemical and dynamical analysis to reveal a highly eccentric and long-period orbit for W Aquilae, a binary system containing an AGB star and a main-sequence companion. Our results are based on anisotropic SiN emission, the detections of irregular NS and SiC emission towards the S-type star, and density structures observed in the CO emission. These features are all interpreted as having formed during periastron interactions. Our astrochemistry-based method can yield stringent constraints on the orbital parameters of long-period binaries containing AGB stars, and will be applicable to other systems.

U2 - 10.1038/s41550-023-02154-y

DO - 10.1038/s41550-023-02154-y

M3 - Article

SN - 2397-3366

VL - 8

SP - 308

EP - 327

JO - Nature Astronomy

JF - Nature Astronomy

ER -

Chemical tracers of a highly eccentric AGB-main-sequence star binary

Abstract

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