Interacting young M-dwarfs in triple system – Par 1802 binary system case study

Cheng, Shelley J.; Vinson, Alec M.; Naoz, Smadar

doi:10.1093/mnras/stz2360

Cited by 3 publications

(2 citation statements)

References 64 publications

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“…In the past years, the octupole-level approximation was proven to have an important role in the evolution of many triple configurations, for different astrophysical settings [e.g. 19,20,188,205,291,331,332,[334][335][336][337][338][339][340][341][342][343][344].…”

Section: Three-body Newtonian Limitmentioning

confidence: 99%

Quiescent and Active Galactic Nuclei as Factories of Merging Compact Objects in the Era of Gravitational Wave Astronomy

Sedda

Naoz

Kocsis³

2023

Universe

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Galactic nuclei harbouring a central supermassive black hole (SMBH), possibly surrounded by a dense nuclear cluster (NC), represent extreme environments that house a complex interplay of many physical processes that uniquely affect stellar formation, evolution, and dynamics. The discovery of gravitational waves (GWs) emitted by merging black holes (BHs) and neutron stars (NSs), funnelled a huge amount of work focused on understanding how compact object binaries (COBs) can pair up and merge together. Here, we review from a theoretical standpoint how different mechanisms concur with the formation, evolution, and merger of COBs around quiescent SMBHs and active galactic nuclei (AGNs), summarising the main predictions for current and future (GW) detections and outlining the possible features that can clearly mark a galactic nuclei origin.

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Section: Three-body Newtonian Limitmentioning

confidence: 99%

Quiescent and Active Galactic Nuclei as Factories of Merging Compact Objects in the Era of Gravitational Wave Astronomy

Sedda

Naoz

Kocsis³

2023

Universe

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“…The dynamical role of a tertiary companion in affecting the evolution of stars in binary configurations is an ongoing question, but one of significant interest (e.g. Gómez Maqueo Chew et al 2012;Stassun et al 2014;Cheng, Vinson & Naoz 2019).…”

Section: Comparison With Stellar Evolution Modelsmentioning

confidence: 99%

Mon-735: a new low-mass pre-main-sequence eclipsing binary in NGC 2264

Gillen

Hillenbrand

Stauffer

et al. 2020

Monthly Notices of the Royal Astronomical Society

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We present Mon-735, a detached double-lined eclipsing binary (EB) member of the ∼3 Myr old NGC 2264 star-forming region, detected by Spitzer. We simultaneously model the Spitzer light curves, follow-up Keck/HIRES radial velocities, and the system’s spectral energy distribution to determine self-consistent masses, radii, and effective temperatures for both stars. We find that Mon-735 comprises two pre-main-sequence M dwarfs with component masses of M = 0.2918 ± 0.0099 and 0.2661 ± 0.0095 M⊙, radii of R = 0.762 ± 0.022 and 0.748 ± 0.023 R⊙, and effective temperatures of Teff = 3260 ± 73 and 3213 ± 73 K. The two stars travel on circular orbits around their common centre of mass in P = 1.9751388 ± 0.0000050 d. We compare our results for Mon-735, along with another EB in NGC 2264 (CoRoT 223992193), to the predictions of five stellar evolution models. These suggest that the lower mass EB system Mon-735 is older than CoRoT 223992193 in the mass–radius diagram (MRD) and, to a lesser extent, in the Hertzsprung–Russell diagram (HRD). The MRD ages of Mon-735 and CoRoT 223992193 are ∼7–9 and 4–6 Myr, respectively, with the two components in each EB system possessing consistent ages.

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Properties of von Zeipel–Lidov–Kozai oscillations in triple systems at the quadrupole order: relaxing the test particle approximation

Hamers

2020

Monthly Notices of the Royal Astronomical Society

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Von Zeipel–Lidov–Kozai (ZLK) oscillations in hierarchical triple systems have important astrophysical implications such as triggering strong interactions and producing, e.g. Type Ia supernovae and gravitational wave sources. When considering analytic properties of ZLK oscillations at the lowest (quadrupole) expansion order, as well as complications due to higher order terms, one usually assumes the test particle limit, in which one of the bodies in the inner binary is massless. Although this approximation holds well for, e.g. planetary systems, it is less accurate for systems with more comparable masses such as stellar triples. Although non-test-particle effects are usually taken into account in numerical simulations, a more analytic approach focusing on the differences between the test particle and general case (at quadrupole order) has, to our knowledge, not been presented. Here, we derive several analytic properties of secular oscillations in triples at the quadruple expansion order. The latter applies even to relatively compact triples, as long as the inner bodies are similar in mass such that octupole-order effects are suppressed. We consider general conditions for the character of the oscillations (circular versus librating), minimum and maximum eccentricities, and time-scales, all as a function of $\gamma \equiv (1/2) \, L_1/G_2$, a ratio of inner-to-outer orbital angular momenta variables (γ = 0 in the test particle limit). In particular, eccentricity oscillations are more effective at retrograde orientations for non-zero γ; assuming zero initial inner eccentricity, the maximum eccentricity peaks at $\cos (i_{\mathrm{rel},0}) = -\gamma$, where $i_{\mathrm{rel},0}$ is the initial relative inclination. We provide a python script that can be used to quickly compute these properties.

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Interacting young M-dwarfs in triple system – Par 1802 binary system case study

Cited by 3 publications

References 64 publications

Quiescent and Active Galactic Nuclei as Factories of Merging Compact Objects in the Era of Gravitational Wave Astronomy

Quiescent and Active Galactic Nuclei as Factories of Merging Compact Objects in the Era of Gravitational Wave Astronomy

Mon-735: a new low-mass pre-main-sequence eclipsing binary in NGC 2264

Properties of von Zeipel–Lidov–Kozai oscillations in triple systems at the quadrupole order: relaxing the test particle approximation

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