Preliminary determinations of the masses of the neutron star and mass donor in the high mass X-ray binary system EXO 1722–363 [PDF]
Astronomy and Astrophysics, 2010 We intended to measure the radial velocity curve of the supergiant companion to the eclipsing high mass X-ray binary pulsar EXO1722-363 and hence determine the stellar masses of the components. We used a set of archival K$_{\rm s}$-band infrared spectra of the counterpart to EXO1722-363 obtained using ISAAC on the VLT, and cross-correlated them in ...
A. B. Mason +6 more
openaire +4 more sources
The intrinsic collective X-ray spectrum of luminous high-mass X-ray binaries [PDF]
, 2017 Using a sample of two hundred luminous (L_unabs>10^38 erg/s, where L_unabs is the unabsorbed 0.25-8 keV luminosity) high-mass X-ray binary (HMXB) candidates found with Chandra in 27 nearby galaxies, we have constructed the collective X-ray spectrum of ...
S. Sazonov, I. Khabibullin
semanticscholar +1 more source
Further Constraints on Variations in the Initial Mass Function from Low-mass X-ray Binary Populations [PDF]
, 2017 We present constraints on variations in the initial mass function (IMF) of nine local early-type galaxies based on their low-mass X-ray binary (LMXB) populations.
M. Peacock +8 more
semanticscholar +1 more source
Ephemeris, orbital decay, and masses of ten eclipsing high-mass X-ray binaries
, 2015 We update the ephemeris of the eclipsing high-mass X-ray binary (HMXB) systems LMC X-4, Cen X-3, 4U 1700-377, 4U 1538-522, SMC X-1, IGR J18027-2016, Vela X-1,IGR J17252-3616, XTE J1855-026, and OAO 1657-415 with the help of more than ten years of ...
M. Falanga +5 more
semanticscholar +1 more source
Stellar wind accretion and accretion disk formation: Applications to neutron star high-mass X-ray binaries [PDF]
Publications of the Astronomical Society of Japan, 2019 Abstract Recent X-ray observations have revealed the complexity and diversity of high-mass X-ray binaries (HMXBs). This diversity challenges a classical understanding of the accretion process on to the compact objects. In this study, we reinforce the conventional concept of the nature of wind-fed accretion on to a neutron star ...
Kenji Nakamura +2 more
openaire +4 more sources
Radiative feedback from high-mass X-ray binaries on the formation of the first galaxies and early reionization [PDF]
, 2013 Recent work suggests that the first generation of stars, the so-called Population III (Pop III), could have formed primarily in binaries or as members of small multiple systems.
Myoungwon Jeon +3 more
semanticscholar +1 more source
Identification of the optical counterparts of high-mass x-ray binaries through optical photometry and spectroscopy [PDF]
, 2005 We present the results of our search for optical counterparts to high-mass X-ray transient sources discovered by various X-ray missions. We obtained CCD images of the X-ray fields through BVR and Hα filters to identify early-type stars in the R - Hα ...
P. Reig +6 more
semanticscholar +1 more source
Constraints to neutron-star kicks in high-mass X-ray binaries withGaiaEDR3
Astronomy & Astrophysics, 2022 Context.All neutron star progenitors in neutron-star high-mass X-ray binaries (NS HMXBs) undergo a supernova event that may lead to a significant natal kick impacting the motion of the whole binary system. The space observatoryGaiaperforms a deep optical survey with exquisite astrometric accuracy, for both position and proper motions, that can be used ...
Francis Fortin +4 more
openaire +4 more sources
Optical depths for gamma-rays in the radiation field of a star heated by external X-ray source in LMXBs: Application to Her X-1 and Sco X-1 [PDF]
2010 A&a 514, 61, 2010 The surface of a low mass star inside a compact low mass X-ray binary system (LMXB) can be heated by the external X-ray source which may appear due to the accretion process onto a companion compact object (a neutron star or a black hole). As a result, the surface temperature of the star can become significantly higher than it is in the normal state ...
arxiv +1 more source
Spectral classification of the mass donors in the high-mass X-ray binaries EXO 1722-363 and OAO 1657-415 [PDF]
, 2009 Aims. We report near-infrared (NIR) observations of the mass donors of the eclipsing high-mass X-ray binary (HMXB) systems EXO 1722-363 and OAO 1657-415 in order to derive their accurate spectral classifications. Methods.
A. B. Mason +4 more
semanticscholar +1 more source