Insights on the Optical and Infrared Nature of MAXI J0709-159: Implications for High-Mass X-ray Binaries
Suman Bhattacharyya,
Department of Physics and Electronics, CHRIST (Deemed to be University), Hosur Main Road, Bangalore, India. Corresponding author: suman.bhattacharyya@res.christuniversity.in
Blesson Mathew,
Department of Physics and Electronics, CHRIST (Deemed to be University), Hosur MainRoad, Bangalore, India
Gourav Banerjee,
Department of Physics and Electronics, CHRIST (Deemed to be University), Hosur Main Road, Bangalore, India
Sindhu G,
Department of Physics, St. Thomas College, Kozhencherry, Kerala-689641, India
S. Muneer,
Indian Institute of Astrophysics, Koramangala, Bangalore, India
S. Pramod Kumar,
Indian Institute of Astrophysics, Koramangala, Bangalore, India
Santosh Joshi,
Aryabhatta Research Institute of Observational Sciences (ARIES), Nainital, India
Abstract
In our previous study (Bhattacharyya et al., 2022), HD 54786, the optical counterpart of the MAXI J0709-159 system, was identified to be an evolved star, departing from the main sequence, based on comparisons with non-X-ray binary systems. In this paper, using color-magnitude diagram (CMD) analysis for High-Mass X-ray Binaries (HMXBs) and statistical t-tests, we found evidence supporting HD 54786’s potential membership in both Be/X-ray binaries (BeXRBs) and supergiant X-ray binaries (SgXBs) populations of HMXBs. Hence, our study points towards dual optical characteristics of HD 54786, as an X-ray binary star and also belonging to a distinct evolutionary phase from BeXRB towards SgXB. Our further analysis suggests that MAXI J0709-159, associated with HD 54786, exhibits low-level activity during the current epoch and possesses a limited amount of circumstellar material. Although similarities with the previously studied BeXRB system LSI +61° 235 (Coe et al., 1994) are noted, continued monitoring and data collection are essential to fully comprehend the complexities of MAXI J0709-159 and its evolutionary trajectory within the realm of HMXBs.
Keywords : Classical Be stars, Circumstellar disks, Photometry, HMXB
To cite this article
Suman Bhattacharyya, Blesson Mathew, Gourav Banerjee, Sindhu G, S. Muneer, S. Pramod Kumar & Santosh Joshi, «Insights on the Optical and Infrared Nature of MAXI J0709-159: Implications for High-Mass X-ray Binaries», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 636-647 URL : http://popups.ulg.be/0037-9565/index.php?id=11821.
