Space and Planetary Science; Astronomy and Astrophysics
Abstract :
[en] ABSTRACT
WR21 and WR31 are two WR + O binaries with short periods, quite similar to the case of V444 Cyg. The XMM-Newton observatory has monitored these two objects and clearly revealed phase-locked variations as expected from colliding winds. The changes are maximum in the soft band (0.5–2.0 keV, variations by a factor 3–4) where they are intrinsically linked to absorption effects. The increase in absorption due to the dense WR wind is confirmed by the spectral analysis. The flux maximum is however not detected exactly at conjunction with the O star in front but slightly afterwards, suggesting Coriolis deflection of the collision zone as in V444 Cyg. In the hard band (2–10 keV), the variations (by a factor of 1.5–2.0) are much more limited. Because of the lower orbital inclinations, eclipses as observed for V444 Cyg are not detected in these systems.
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)
Rauw, Grégor ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Johnson, Rachel; Department of Physics and Astronomy, University of Denver , Denver, CO 80210 USA
Gosset, Eric ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Hoffman, Jennifer L ; Department of Physics and Astronomy, University of Denver , Denver, CO 80210 USA
Language :
English
Title :
Colliding winds in WR21 and WR31 – I. The X-ray view
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Asplund M., Grevesse N., Sauval A. J., Scott P., 2009, ARA&A, 47, 481
Bailer-Jones C. A. L., Rybizki J., Fouesneau M., Demleitner M., Andrae R., 2021, AJ, 161, 147
Bestenlehner J. M., Crowther P. A., Broos P. S., Pollock A. M. T, Townsley L. K., 2022, MNRAS, 510, 6133
Buckley D. A. H., Swart G. P., Meiring J. G., 2006, in Stepp L. M., ed., Proc. SPIE Conf. Ser. Vol. 6267, Ground-based and Airborne Telescopes. SPIE, Bellingham, p. 62670Z
Cherepashchuk A. M., 1976, Sov. Astron. Lett., 2, 138
Espinoza-Galeas D., Corcoran M. F., Hamaguchi K. et al., 2022, ApJ, 933, 136
Fahed R., Moffat A. F. J., 2012, MNRAS, 424, 1601
Fullard A. G., O Brien J. T., Kerzendorf W. E., Shrestha M., Hoffman J. L., Ignace R., van der Smagt P., 2022, ApJ, 930, 89
Gayley K. G., Owocki S. P., Cranmer S. R., 1997, ApJ, 475, 786
Gosset E., 2007, Habilitation Thesis. University of Li ège
Gosset E., Naze Y., Sana H., Rauw G., Vreux J.-M., 2009, A&A, 508, 805
Graham M. J., Drake A. J., Djorgovski S. G., Mahabal A. A., Donalek C., Duan V., Maker A., 2013, MNRAS, 434, 3423
Hamann W.-R. et al., 2019, A&A, 625, A57
Johnson R. A., Fullard A. G., Lomax J. R., Cooper K., Leon-Alvarez D., Hoffman J. L., Nordsieck K. H., 2019, Res. Notes Am. Astron. Soc., 3, 146
Kobulnicky H. A., Nordsieck K. H., Burgh E. B., Smith M. P., Perci v al J. W., Williams T. B., O Donoghue D., 2003, in Iye M., Moorwood A. F. M., eds, Proc. SPIE Conf. Ser. Vol. 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes. SPIE, Bellinghaum, p. 1634
Lamontagne R., Moffat A. F. J., Drissen L., Robert C., Matthews J. M., 1996, AJ, 112, 2227
Lomax J. R. et al., 2015, A&A, 573, A43
Martins F., Schaerer D., Hillier D. J., 2005, A&A, 436, 1049
Moffat A. F. J., Corcoran M. F., 2009, ApJ, 707, 693
Naze Y. et al., 2011, ApJS, 194, 7
Naze Y., Koenigsberger G., Pittard J. M., Parkin E. R., Rauw G., Corcoran M. F., Hillier D. J., 2018, ApJ, 853, 164
Naze Y., Gosset E., Marechal Q., 2021, MNRAS, 501, 4214
Panagiotou C., Walter R., 2018, A&A, 610, A37
P ande y J. C., P ande y S. B., Karmakar S., 2014, ApJ, 788, 84
Pollock A. M. T., 1987, ApJ, 320, 283
Pollock A. M. T., Crowther P. A., Tehrani K., Broos P. S., Townsley L. K., 2018, MNRAS, 474, 3228
Rauw G., Stevens I. R., Pittard J. M., Corcoran M. F., 2000, MNRAS, 316, 129
Schwarzenberg-Czerny A., 1989, MNRAS, 241, 153
Stevens I. R., Blondin J. M., Pollock A. M. T., 1992, ApJ, 386, 265
Willis A. J., Schild H., Stevens I. R., 1995, A&A, 298, 549
Similar publications
Sorry the service is unavailable at the moment. Please try again later.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
