Double core evolution. I - A 16 solar mass star with a 1 solar mass neutron-star companion

Taam, R. E.; Bodenheimer, Peter; Ostriker, J.P.

doi:10.1086/156142

Cited by 184 publications

(111 citation statements)

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“…Even the companion of Vela X-1 has a wind terminal velocity less than what would be expected from its high luminosity (Kudritzki and Puls, 2000). Once the companion is close to overflowing its Roche lobe, deep spiral-in is unavoidable (van den Heuvel and De Loore, 1973) and results in a Common Envelope phase (Taam et al, 1978).…”

Section: Obscured Super-giant Systemsmentioning

confidence: 99%

High-mass X-ray binaries in the Milky Way

Walter

Lutovinov

Bozzo

et al. 2015

Astron Astrophys Rev

230

234

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High-mass X-ray binaries are fundamental in the study of stellar evolution, nucleosynthesis, structure and evolution of galaxies and accretion processes. Hard X-rays observations by INTEGRAL and Swift have broadened significantly our understanding in particular for the super-giant systems in the Milky Way, which number has increased by almost a factor of three. INTEGRAL played a crucial role in the discovery, study and understanding of heavily obscured systems and of fast X-ray transients. Most super-giant systems can now be classified in three categories: classical/obscured, eccentric and fast transient.The classical systems feature low eccentricity and variability factor of ∼ 10 3 , mostly driven by hydrodynamic phenomena occurring on scales larger than the accretion radius. Among them, systems with short orbital periods and close to Roche-Lobe overflow or with slow winds, appear highly obscured. In eccentric systems, the variability amplitude can reach even higher factors, because of the contrast of the wind density along the orbit. Four super-giant systems, featuring fast outbursts, very short orbital periods and anomalously low accretion rates, are not yet understood.Simulations of the accretion processes on relatively large scales have progressed and reproduce parts of the observations. The combined effects of wind

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Section: Obscured Super-giant Systemsmentioning

confidence: 99%

High-mass X-ray binaries in the Milky Way

Walter

Lutovinov

Bozzo

et al. 2015

Astron Astrophys Rev

230

234

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“…Following Papish, Soker, & Bukay (2015), we consider a 16 M red giant model (Taam, Bodenheimer, & Ostriker 1978) with a density profile given by Figure 1. Schematic representation of the reference system used in this paper.…”

Section: Dynamics Of the Jet Propagating Through The Common Envelopementioning

confidence: 99%

Dynamics of jets during the common-envelope phase

Méndez

López-Cámara

Colle

2017

Monthly Notices of the Royal Astronomical Society

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Common envelope (CE) is an important phase in the evolution of many binary systems. Giant star / compact object interaction in binaries plays an important role in highenergy phenomena as well as in the evolution of their environment. Material accreted onto the compact object may form a disk and power a jet. We study analytically and through numerical simulations the interaction between the jet and the CE. We determine the conditions under which accreting material quenches the jet or allows it to propagate successfully, in which case even the envelope may be ejected. Close to the stellar core of the companion the compact object accretes at a larger rate. A jet launched from this region needs a larger accretion-to-ejection efficiency to successfully propagate through the CE compared to a jet launched far from the stellar core, and is strongly deflected by the orbital motion. The energy deposited by the jet may be larger than the binding energy of the envelope. The jet can, thus, play a fundamental role in the CE evolution. We find that the energy dissipation of the jet into the CE may stop accretion onto the disk. We expect the jet to be intermittent, unless the energy deposited is large enough to lead to the unbinding of the outer layers of the CE. Given that the energy and duration of the jet are similar to those of ultra-long GRBs, we suggest this as a new channel to produce these events.

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“…The first channel includes one episode of CE evolution wherein the more massive star of the primordial binary overflows its Roche lobe after having become a giant with a degenerate core and then undergoes dynamically unstable mass transfer onto its binary companion (see, e.g., Taam et al 1978;Webbink 1984;Taam & Bodenheimer 1992). The rapid rate of mass transfer causes the companion to spiral inward toward the degenerate core of the giant while concomitantly expelling the envelope of the giant into the interstellar medium.…”

Section: Evolutionary Pathwaysmentioning

confidence: 99%

DISCOVERY OF TWO NEW THERMALLY BLOATED LOW-MASS WHITE DWARFS AMONG THEKEPLERBINARIES

Rappaport

Nelson

Levine

et al. 2015

ApJ

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We report the discovery of two new low-mass, thermally bloated, hot white dwarfs among the Kepler sample of eclipsing binaries. These are KIC 9164561 and KIC 10727668 with orbital periods of 1.2670 and 2.3058 days, respectively. The current primary in both systems is an A star of about 2  M . This brings the number of similar binaries among the Kepler sample to six, and the two new systems have the shortest orbital periods among them. The white dwarf (WD) in KIC 9164561 has the largest thermal bloating, compared to its cold degenerate radius, of about a factor of 14. We utilize radial velocity measurements of the A star in KIC 9164561 to determine the WD mass rather accurately:. The mass of the WD in KIC 10727668 is based on the Doppler boosting signal in the Kepler photometry and is less accurately determined to be . Based on the inferred radii and effective temperatures of these two white dwarfs, we are able to make an independent theoretical estimate of their masses to within ∼0.01  M based on evolutionary models of their cooling history after they lose their hydrogen-rich envelopes. We also present evidence that there is a third body in the KIC 9164561 system with an orbital period of 8-14 yr.

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Double core evolution. I - A 16 solar mass star with a 1 solar mass neutron-star companion

Cited by 184 publications

References 0 publications

High-mass X-ray binaries in the Milky Way

High-mass X-ray binaries in the Milky Way

Dynamics of jets during the common-envelope phase

DISCOVERY OF TWO NEW THERMALLY BLOATED LOW-MASS WHITE DWARFS AMONG THEKEPLERBINARIES

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