4.7 Article

Observational predictions for Thorne-Zytkow objects

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Astronomy & Astrophysics

Gravitational wave emission from dynamical stellar interactions

Javier Moran-Fraile et al.

Summary: We are at the beginning of the era of gravitational wave astronomy. Current detectors can only observe gravitational waves with frequencies between 10 Hz and 10 kHz, which are generated by compact object mergers. The launch of LISA will enable the detection of lower frequency stellar interactions.

ASTRONOMY & ASTROPHYSICS (2023)

Article Astronomy & Astrophysics

Nucleosynthesis of Binary-stripped Stars

R. Farmer et al.

Summary: The cosmic origin of elements is uncertain, but binary interactions in massive stars have a significant impact on chemical yields. Using stellar evolution simulations, we find that binary-stripped stars produce more elements than single stars due to increased mass loss and chances of envelope ejection during supernovae. Different elements are produced more significantly by binary-stripped stars, such as F and K. We also identify potential radioactive isotopes that can help constrain supernova models.

ASTROPHYSICAL JOURNAL (2023)

Article Astronomy & Astrophysics

Modules for Experiments in Stellar Astrophysics (MESA): Time-dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure

Adam S. Jermyn et al.

Summary: We have updated the capabilities of the MESA software by implementing automatic differentiation, improving the treatment of convection, enhancing the equation of state, and updating various aspects of stellar modeling. We have also introduced new methods to increase the efficiency of calculating opacities and radiative levitation, and to evolve the late stages of massive stars. Additionally, we have made improvements to the software infrastructure of MESA to enhance source code development and community engagement.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2023)

Article Astronomy & Astrophysics

Cool, Luminous, and Highly Variable Stars in the Magellanic Clouds. II. Spectroscopic and Environmental Analysis of Thorne-Zytkow Object and Super-AGB Star Candidates

Anna J. G. O'Grady et al.

Summary: In this study, a population of 38 cool and luminous variable stars in the Magellanic Clouds was investigated, and 11 of them were examined in detail to classify them as either Thorne-Zytkow objects or super-asymptotic giant branch stars. These stars are not associated with recent star formation and there is no evidence of past supernovae at their locations.

ASTROPHYSICAL JOURNAL (2023)

Article Astronomy & Astrophysics

Rejuvenated Accretors Have Less Bound Envelopes: Impact of Roche Lobe Overflow on Subsequent Common Envelope Events

M. Renzo et al.

Summary: Common envelope (CE) evolution plays a critical role in the formation of compact binaries, including gravitational-wave sources. The rejuvenation of the accretor star during the first stable mass transfer decreases the energy required to eject a CE by a significant amount. This finding suggests that binaries experiencing first stable mass transfer may have wider final separations than currently predicted.

ASTROPHYSICAL JOURNAL LETTERS (2023)

Article Astronomy & Astrophysics

Mergers of neutron stars and black holes with cores of giant stars: a population synthesis study

Aldana Grichener

Summary: We perform population synthesis of massive binaries to study the mergers of NSs and BHs with the cores of their giant secondaries during CEE. We use different values of alpha(CE) to constrain its possible values by comparing with observed rate densities. We find two main evolutionary pathways resulting in NS-core mergers and one pathway leading to BH-core mergers.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Article Astronomy & Astrophysics

Numerical Simulations of Convective Three-dimensional Red Supergiant Envelopes

Jared A. Goldberg et al.

Summary: In this study, we use three-dimensional radiation hydrodynamic simulations to explore the convective properties and energy transfer mechanisms of red supergiants. We find that photon diffusion dominates energy transport beyond a certain radius, and the enhanced Eddington luminosity leads to outward motion of denser regions. The region also exhibits a significant amount of turbulent pressure, resulting in a more extended density structure than predicted by one-dimensional stellar evolution models.

ASTROPHYSICAL JOURNAL (2022)

Article Astronomy & Astrophysics

Planet Hunters TESS IV: a massive, compact hierarchical triple star system TIC 470710327

N. L. Eisner et al.

Summary: We report the discovery and analysis of a massive, compact, hierarchical triple star system identified by citizen scientists in data obtained by NASA's TESS. Follow-up observations and dynamical modeling reveal that the system is comprised of three OB stars, with a compact eclipsing binary and a non-eclipsing tertiary star. The non-eclipsing tertiary star is more massive than the combined mass of the inner binary, suggesting future phases of mass transfer and potential evolution into a double neutron star or a Thorne-Zytkow object.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Astronomy & Astrophysics

Stellar core-merger-induced collapse: new formation pathways for black holes, Thorne-Zytkow objects, magnetars, and superluminous supernovae

Iminhaji Ablimit et al.

Summary: This study proposes a new formation channel for BHs and peculiar NSs, called the core-merger-induced collapse (CMIC) model. By merging an oxygen/neon/magnesium composition white dwarf with the core of a hydrogen-rich or helium-rich non-degenerate star during the common-envelope phase, unique new types of objects are created. Simulation results show that the CMIC channel could significantly contribute to the populations of pulsars, TZOs, magnetars, and BHs.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Astronomy & Astrophysics

Luminous Fast Blue Optical Transients and Type Ibn/Icn SNe from Wolf-Rayet/Black Hole Mergers

Brian D. Metzger

Summary: This article proposes progenitor models for the luminous subclass of Fast Blue Optical Transients (LFBOTs), specifically the prototype AT2018cow. It suggests that the tidal disruption and hyper-accretion of a Wolf-Rayet (WR) star by a black hole or neutron star binary companion can explain the observed properties of LFBOTs, such as fast optical rise times, high peak luminosities, low yields of Ni-56, aspherical ejecta, hydrogen-depleted circumstellar material (CSM), and the presence of X-ray/gamma-ray sources.

ASTROPHYSICAL JOURNAL (2022)

Article Astronomy & Astrophysics

Neutron stars colliding with binary companions: formation of hypervelocity stars, pulsar planets, bumpy superluminous supernovae and Thorne-Zytkow objects

Ryosuke Hirai et al.

Summary: This study uses 3D hydrodynamical simulations to investigate the collision between newly born neutron stars and main-sequence binary companions after a supernova explosion. The results show that the outcome of the collision depends on the direction and magnitude of the natal kick. For fast kicks and high impact parameters, the neutron star can penetrate the companion star envelope without merging, resulting in the companion being accelerated to runaway velocities. For lower impact parameters, the neutron star directly merges with the companion. In intermediate cases, the neutron star penetrates the companion envelope multiple times, causing multiple bumps in the supernova light curve.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Astronomy & Astrophysics

Dissecting the microphysics behind the metallicity-dependence of massive stars radii

Chengcheng Xin et al.

Summary: Understanding the evolution of massive star radii is crucial for answering questions about stellar physics. Metallicity plays a key role in determining a star's radius. Through numerical experiments, we find that the impact of metallicity on stellar radii varies with time and overall metallicity magnitude.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Article Astronomy & Astrophysics

Can Thorne-Zytkow objects source GW190814-type events?

Ilias Cholis et al.

Summary: This article examines the connection between Thorne-Zytkow objects (TZOs) and GW190814-type events. It finds that TZOs in dense stellar clusters cannot explain the rate of such events, but TZOs formed within hierarchical triple systems may be able to provide a comparable rate.

PHYSICAL REVIEW D (2022)

Article Astronomy & Astrophysics

The nature of VX Sagitarii: Is it a TO, a RSG, or a high-mass AGB star?

H. M. Tabernero et al.

Summary: The spectroscopic analysis of the extremely luminous red star VX Sgr suggests that it is likely an extreme asymptotic giant branch (AGB) star, based on its Mira-like behavior and unique spectral features such as strong RbI lines.

ASTRONOMY & ASTROPHYSICS (2021)

Article Astronomy & Astrophysics

Measuring titanium isotope ratios in exoplanet atmospheres

Dilovan B. Serindag et al.

Summary: The study aims to assess the feasibility of performing titanium isotope measurements in exoplanet atmospheres, investigating the effect of processing techniques on isotope ratios and estimating the signal-to-noise requirements for future observations. The results show slightly enhanced abundance of minor Ti isotopes compared to terrestrial values, with little impact on isotope ratios from filtering continuum information. Super Jupiters at large angular separations are the most accessible exoplanets, requiring specific observing times on different telescopes.

ASTRONOMY & ASTROPHYSICS (2021)

Article Astronomy & Astrophysics

The Cosmic Carbon Footprint of Massive Stars Stripped in Binary Systems

R. Farmer et al.

Summary: The study predicts the amount of carbon ejected by stars using the MESA stellar evolution code, finding that binary-stripped stars are more efficient at producing carbon compared to single stars due to the shrinking convective helium core. The findings emphasize the importance of considering binary-stripped stars in chemical yield predictions and suggest further studies on other products of binary interactions.

ASTROPHYSICAL JOURNAL (2021)

Article Astronomy & Astrophysics

Evolution of Accretor Stars in Massive Binaries: Broader Implications from Modeling ζ Ophiuchi

M. Renzo et al.

Summary: Mass transfer in close binaries can significantly affect the appearance, structure, and future evolution of massive stars. The study shows that accretion of mass can lead to higher spin in the core of the accretor and changes in the density profile due to the development of a convective layer. Comparison with single rotating star models reveals significant differences caused by mass accretion.

ASTROPHYSICAL JOURNAL (2021)

Article Physics, Atomic, Molecular & Chemical

The rotationally resolved infrared spectrum of TiO and its isotopologues

Daniel Witsch et al.

Summary: This study presents the ro-vibrationally resolved gas-phase spectrum of the diatomic molecule TiO around 1000 cm(-1). By combining multi-isotopic analysis with literature data, important parameter sets related to TiO were successfully obtained.

JOURNAL OF MOLECULAR SPECTROSCOPY (2021)

Article Astronomy & Astrophysics

Prospects for Multimessenger Observations of Thorne-Zytkow Objects

Lindsay DeMarchi et al.

Summary: Thorne-Zytkow objects (TZOs) are a class of stellar objects consisting of a neutron star core surrounded by a large and diffuse envelope. Their distinctive chemical abundance patterns can be used to differentiate them from other stars. Detection of continuous gravitational wave emission from the rotating neutron star core would provide strong evidence for the existence of TZOs. Model for gravitational wave detector confirmation of TZOs is proposed, suggesting detectability with Advanced LIGO.

ASTROPHYSICAL JOURNAL (2021)

Article Astronomy & Astrophysics

Properties of Thorne-ytkow object explosions

Takashi J. Moriya et al.

Summary: Thorne-.Zytkow object explosions are observed as long-duration transients lasting for several years, with a luminosity plateau at the beginning, followed by a sudden dimming, and finally a short bright phase before disappearing; if the accretion disc is sustained for a long time, the explosions become as bright as supernovae.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Article Astronomy & Astrophysics

Skye: A Differentiable Equation of State

Adam S. Jermyn et al.

Summary: Skye is a new equation of state for fully ionized matter that considers various effects and determines the point of Coulomb crystallization in a self-consistent manner. It is easily extended to include new effects and provides thermodynamic quantities using automatic differentiation machinery.

ASTROPHYSICAL JOURNAL (2021)

Article Astronomy & Astrophysics

Analysis of the TiO isotopologues in stellar optical spectra

Ya. V. Pavlenko et al.

ASTRONOMY & ASTROPHYSICS (2020)

Article Astronomy & Astrophysics

Pulsation-driven Mass Loss from Massive Stars behind Stellar Mergers in Metal-poor Dense Clusters

Daisuke Nakauchi et al.

ASTROPHYSICAL JOURNAL (2020)

Article Astronomy & Astrophysics

On Stellar Evolution in a Neutrino Hertzsprung-Russell Diagram

Ebraheem Farag et al.

ASTROPHYSICAL JOURNAL (2020)

Article Astronomy & Astrophysics

Modeling Dense Star Clusters in the Milky Way and Beyond with the CMC Cluster Catalog

Kyle Kremer et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2020)

Article Astronomy & Astrophysics

ExoMol molecular line lists - XXXIII. The spectrum of Titanium Oxide

Laura K. McKemmish et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2019)

Article Multidisciplinary Sciences

Stellar mergers as the origin of magnetic massive stars

Fabian R. N. Schneider et al.

NATURE (2019)

Article Physics, Atomic, Molecular & Chemical

Mass-independent analysis of the stable isotopologues of gas-phase titanium monoxide - TiO

Alexander A. Breier et al.

JOURNAL OF MOLECULAR SPECTROSCOPY (2019)

Article Astronomy & Astrophysics

PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter

M. C. Miller et al.

ASTROPHYSICAL JOURNAL LETTERS (2019)

Article Astronomy & Astrophysics

Angular momentum transport by heat-driven g-modes in slowly pulsating B stars

R. H. D. Townsend et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

The luminosities of cool supergiants in the Magellanic Clouds, and the Humphreys-Davidson limit revisited

Ben Davies et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

A critical re-evaluation of the Thorne-Zytkow object candidate HV 2112

Emma R. Beasor et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

Variability of Red Supergiants in M31 from the Palomar Transient Factory

Monika D. Soraisam et al.

ASTROPHYSICAL JOURNAL (2018)

Article Astronomy & Astrophysics

Explosions of Thorne-Zytkow objects

Takashi J. Moriya

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Article Astronomy & Astrophysics

Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions

Bill Paxton et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2018)

Article Astronomy & Astrophysics

Episodic mass ejections from common-envelope objects

Matthew Clayton et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Article Astronomy & Astrophysics

Systematic survey of the effects of wind mass loss algorithms on the evolution of single massive stars

M. Renzo et al.

ASTRONOMY & ASTROPHYSICS (2017)

Article Astronomy & Astrophysics

Neutrinos from Beta Processes in a Presupernova: Probing the Isotopic Evolution of a Massive Star

Kelly M. Patton et al.

ASTROPHYSICAL JOURNAL (2017)

Article Astronomy & Astrophysics

Presupernova Neutrinos: Realistic Emissivities from Stellar Evolution

Kelly M. Patton et al.

ASTROPHYSICAL JOURNAL (2017)

Article Astronomy & Astrophysics

Rosseland and Flux Mean Opacities for Compton Scattering

Juri Poutanen

ASTROPHYSICAL JOURNAL (2017)

Article Astronomy & Astrophysics

Large proper motion of the Thorne-Zytkow object candidate HV 2112 reveals its likely nature as foreground Galactic S-star

Thomas J. Maccarone et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2016)

Article Astronomy & Astrophysics

MILLIMETER/SUBMILLIMETER SPECTROSCOPY OF TiO (X3Δr): THE RARE TITANIUM ISOTOPOLOGUES

A. P. Lincowski et al.

ASTROPHYSICAL JOURNAL (2016)

Article Astronomy & Astrophysics

Ejecting the envelope of red supergiant stars with jets launched by an inspiralling neutron star

Oded Papish et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Article Astronomy & Astrophysics

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA): BINARIES, PULSATIONS, AND EXPLOSIONS

Bill Paxton et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2015)

Article Astronomy & Astrophysics

HV2112, a Thorne-A⟫ytkow object or a super asymptotic giant branch star

Christopher A. Tout et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

HYPERCRITICAL ACCRETION, INDUCED GRAVITATIONAL COLLAPSE, AND BINARY-DRIVEN HYPERNOVAE

Chris L. Fryer et al.

ASTROPHYSICAL JOURNAL LETTERS (2014)

Article Astronomy & Astrophysics

Discovery of a Thorne-Zytkow object candidate in the Small Magellanic Cloud

Emily M. Levesque et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)

Article Astronomy & Astrophysics

Pure rotational spectra of TiO and TiO2 in VY Canis Majoris

T. Kaminski et al.

ASTRONOMY & ASTROPHYSICS (2013)

Article Astronomy & Astrophysics

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA): PLANETS, OSCILLATIONS, ROTATION, AND MASSIVE STARS

Bill Paxton et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2013)

Article Astronomy & Astrophysics

gyre: an open-source stellar oscillation code based on a new Magnus Multiple Shooting scheme

R. H. D. Townsend et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2013)

Article Astronomy & Astrophysics

MODULES FOR EXPERIMENTS IN STELLAR ASTROPHYSICS (MESA)

Bill Paxton et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2011)

Article Astronomy & Astrophysics

THE EQUATION OF STATE FROM OBSERVED MASSES AND RADII OF NEUTRON STARS

Andrew W. Steiner et al.

ASTROPHYSICAL JOURNAL (2010)

Article Astronomy & Astrophysics

EVOLUTION OF MASSIVE STARS WITH PULSATION-DRIVEN SUPERWINDS DURING THE RED SUPERGIANT PHASE

Sung-Chul Yoon et al.

ASTROPHYSICAL JOURNAL LETTERS (2010)

Article Astronomy & Astrophysics

THE JINA REACLIB DATABASE: ITS RECENT UPDATES AND IMPACT ON TYPE-I X-RAY BURSTS

Richard H. Cyburt et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2010)

Article Astronomy & Astrophysics

TRENDS IN 44Ti AND 56Ni FROM CORE-COLLAPSE SUPERNOVAE

Georgios Magkotsios et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2010)

Review Astronomy & Astrophysics

The Chemical Composition of the Sun

Martin Asplund et al.

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 47 (2009)

Article Astronomy & Astrophysics

The effect of rotation on the stability of nuclear burning in accreting neutron stars

L. Keek et al.

ASTRONOMY & ASTROPHYSICS (2009)

Article Astronomy & Astrophysics

The rotational spectrum of TiO2

S. Bruenken et al.

ASTROPHYSICAL JOURNAL (2008)

Article Astronomy & Astrophysics

Explosive hydrogen burning during type I X-ray bursts

Jacob Lund Fisker et al.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2008)

Article Astronomy & Astrophysics

Turbulent mixing in the surface layers of accreting neutron stars

Anthony L. Piro et al.

ASTROPHYSICAL JOURNAL (2007)

Article Astronomy & Astrophysics

Coulomb tunneling for fusion reactions in dense matter: Path integral Monte Carlo versus mean field

A. I. Chugunov et al.

PHYSICAL REVIEW D (2007)

Article Astronomy & Astrophysics

Updated electron-conduction opacities: The impact on low-mass stellar models

S. Cassisi et al.

ASTROPHYSICAL JOURNAL (2007)

Article Physics, Nuclear

Improved measurement of the 44Ti half-life from a 14-year long study

I. Ahmad et al.

PHYSICAL REVIEW C (2006)

Article Astronomy & Astrophysics

Variability in red supergiant stars:: pulsations, long secondary periods and convection noise

L. L. Kiss et al.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2006)

Article Astronomy & Astrophysics

The effective temperature scale of Galactic red supergiants: Cool, but not as cool as we thought

EM Levesque et al.

ASTROPHYSICAL JOURNAL (2005)

Article Astronomy & Astrophysics

Low-temperature opacities

JW Ferguson et al.

ASTROPHYSICAL JOURNAL (2005)

Article Physics, Nuclear

The NUBASE evaluation of nuclear and decay properties

G Audi et al.

NUCLEAR PHYSICS A (2003)

Article Astronomy & Astrophysics

On the stability of very massive primordial stars

I Baraffe et al.

ASTROPHYSICAL JOURNAL (2001)