ζ Tau, a Post-interaction Binary

[en] Be stars are usually thought to be born in binary interactions. The presence of the companion has been proposed to play a role in the peculiar X-ray emission recorded for a subgroup of Be stars called the γ Cas analogs. In this contribution, we report on a multiwavelength investigation of one of them, the Be binary ζ Tau. Using data from TESS, Chandra, SRG/eROSITA, and XMM-Newton, we derive the high-energy properties as a function of time and orbital phase. The results are then used to test the proposed γ Cas models.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Nazé, Yaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)

Motch, Christian

Rauw, Grégor ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)

Smith, Myron A.

Robrade, Jan

Language :

English

Title :

ζ Tau, a Post-interaction Binary

Publication date :

2024

Journal title :

Bulletin de la Société Royale des Sciences de Liège

ISSN :

0037-9565

eISSN :

1783-5720

Publisher :

University of Liege

Pages :

250-255

Peer reviewed :

Peer reviewed

Additional URL :

https://popups.uliege.be/0037-9565/index.php?id=12333

Available on ORBi :

since 19 December 2024

Statistics

Number of views

10 (1 by ULiège)

Number of downloads

6 (1 by ULiège)

More statistics

Scopus citations^®

Scopus citations^®
without self-citations

OpenCitations

OpenAlex citations

Bibliography

Boubert, D. and Evans, N. W. (2018) On the kinematics of a runaway Be star population. MNRAS, 477(4), 5261–5278. https://doi.org/10.1093/mnras/sty980.
Kennea, J. A., Coe, M. J., Evans, P. A., Townsend, L. J., Campbell, Z. A., and Udalski, A. (2021) Swift J011511.0-725611: discovery of a rare Be star/white dwarf binary system in the SMC. MNRAS, 508(1), 781–788. https://doi.org/10.1093/mnras/stab2632.
Klement, R., Carciofi, A. C., Rivinius, T., Ignace, R., Matthews, L. D., Torstensson, K., Gies, D., Vieira, R. G., Richardson, N. D., Domiciano de Souza, A., Bjorkman, J. E., Hallinan, G., Faes, D. M., Mota, B., Gullingsrud, A. D., de Breuck, C., Kervella, P., Curé, M., and Gunawan, D. (2019) Prevalence of SED turndown among classical Be stars: Are all Be stars close binaries? ApJ, 885(2), 147. https://doi.org/10.3847/1538-4357/ab48e7.
Nazé, Y., Guarro Flo, J., Leduc, A., Stiewing, A., Curry, S., Dupont, X., Bryssnick, E., Diz, H. R., Bertrand, E., Buil, C., Desnoux, V., and Garde, O. (2024a) The recent Hα variations of ζ Tau. OEJV, 246, 1–8. https://doi.org/10.5817/OEJV2024-0246.
Nazé, Y., Motch, C., Rauw, G., Smith, M. A., and Robrade, J. (2024b) X-raying the ζ Tau binary system. A&A, 688, A181. https://doi.org/10.1051/0004-6361/202449737.
Nazé, Y., Rauw, G., Bohlsen, T., Heathcote, B., Mc Gee, P., Cacella, P., and Motch, C. (2022a) X-ray response to disc evolution in two γ Cas stars. MNRAS, 512(2), 1648–1657. https://doi.org/10.1093/mnras/stac314.
Nazé, Y., Rauw, G., and Smith, M. (2019) Surprises in the simultaneous X-ray and optical monitoring of π Aquarii. A&A, 632, A23. https://doi.org/10.1051/0004-6361/201936307.
Nazé, Y., Rauw, G., Smith, M. A., and Motch, C. (2022b) The X-ray emission of Be+stripped star binaries. MNRAS, 516(3), 3366–3380. https://doi.org/10.1093/mnras/stac2245.
Nazé, Y. and Robrade, J. (2023) SRG/eROSITA survey of Be stars. MNRAS, 525(3), 4186–4201. https://doi.org/10.1093/mnras/stad2399.
Rauw, G. (2024) Fluorescent Fe K line emission of γ Cas stars. I. Do γ Cas stars host propelling neutron stars? A&A, 682, A179. https://doi.org/10.1051/0004-6361/202348076.
Rauw, G., Nazé, Y., Motch, C., Smith, M. A., Fló, J. G., and Lopes de Oliveira, R. (2022) The X-ray emission of γ Cassiopeiae during the 2020–2021 disc eruption. A&A, 664, A184. https://doi.org/10.1051/0004-6361/202243679.
Ruždjak, D., Božić, H., Harmanec, P., Fiřt, R., Chadima, P., Bjorkman, K., Gies, D. R., Kaye, A. B., Koubský, P., McDavid, D., Richardson, N., Sudar, D., Šlechta, M., Wolf, M., and Yang, S. (2009) Properties and nature of Be stars. 26. Long-term and orbital changes of ζ Tauri. A&A, 506(3), 1319–1333. https://doi.org/10.1051/0004-6361/200810526.
Smith, M. A., Lopes de Oliveira, R., and Motch, C. (2016) The X-ray emission of the γ Cassiopeiae stars. AdSpR, 58(5), 782–808. https://doi.org/10.1016/j.asr.2015.12.032.
Smith, M. A., Lopes de Oliveira, R., and Motch, C. (2017) Is there a propeller neutron star in γ Cas? MNRAS, 469(2), 1502–1509. https://doi.org/10.1093/mnras/stx926.
Smith, M. A., Lopes de Oliveira, R., Motch, C., Henry, G. W., Richardson, N. D., Bjorkman, K. S., Stee, P., Mourard, D., Monnier, J. D., Che, X., Bücke, R., Pollmann, E., Gies, D. R., H Schaefer, G., ten Brummelaar, T., McAlister, H. A., Turner, N. H., Sturmann, J., Sturmann, L., and Ridgway, S. T. (2012) The relationship between γ Cassiopeiae’s X-ray emission and its circumstellar environment. A&A, 540, A53. https://doi.org/10.1051/0004-6361/ 201118342.
van Bever, J. and Vanbeveren, D. (1997) The number of B-type binary mass gainers in general, binary Be stars in particular, predicted by close binary evolution. A&A, 322, 116–126. https://ui.adsabs.harvard.edu/abs/1997A&A...322..116V.
Wang, L., Gies, D. R., Peters, G. J., Götberg, Y., Chojnowski, S. D., Lester, K. V., and Howell, S. B. (2021) The detection and characterization of Be+sdO binaries from HST/STIS FUV spectroscopy. AJ, 161(5), 248. https://doi.org/10.3847/1538-3881/abf144.