Pre-explosion Spiral Mass Loss of a Binary Star Merger

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10392074" target="_blank" >RIV/00216208:11320/17:10392074 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3847/1538-4357/aa95b9" target="_blank" >https://doi.org/10.3847/1538-4357/aa95b9</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/aa95b9" target="_blank" >10.3847/1538-4357/aa95b9</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pre-explosion Spiral Mass Loss of a Binary Star Merger

Popis výsledku v původním jazyce

Binary stars commonly pass through phases of direct interaction, which result in the rapid loss of mass, energy, and angular momentum. Though crucial to understanding the fates of these systems, including their potential as gravitational wave sources, this short-lived phase is poorly understood and has thus far been unambiguously observed in only a single event, V1309 Sco. Here we show that the complex and previously unexplained photometric behavior of V1309 Sco prior to its main outburst results naturally from the runaway loss of mass and angular momentum from the outer Lagrange point, which lasts for thousands of orbits prior to the final dynamical coalescence, much longer than predicted by contemporary models. This process enshrouds the binary in a &quot;death spiral&quot; outflow, which affects the amplitude and phase modulation of its light curve, and contributes to driving the system together. The total amount of mass lost during this gradual phase (similar to 0.05 M-circle dot) rivals the mass lost during the subsequent dynamical interaction phase, which has been the main focus of &quot;common envelope&quot; modeling so far. Analogous features in related transients suggest that this behavior is ubiquitous.

Název v anglickém jazyce

Pre-explosion Spiral Mass Loss of a Binary Star Merger

Popis výsledku anglicky

Binary stars commonly pass through phases of direct interaction, which result in the rapid loss of mass, energy, and angular momentum. Though crucial to understanding the fates of these systems, including their potential as gravitational wave sources, this short-lived phase is poorly understood and has thus far been unambiguously observed in only a single event, V1309 Sco. Here we show that the complex and previously unexplained photometric behavior of V1309 Sco prior to its main outburst results naturally from the runaway loss of mass and angular momentum from the outer Lagrange point, which lasts for thousands of orbits prior to the final dynamical coalescence, much longer than predicted by contemporary models. This process enshrouds the binary in a &quot;death spiral&quot; outflow, which affects the amplitude and phase modulation of its light curve, and contributes to driving the system together. The total amount of mass lost during this gradual phase (similar to 0.05 M-circle dot) rivals the mass lost during the subsequent dynamical interaction phase, which has been the main focus of &quot;common envelope&quot; modeling so far. Analogous features in related transients suggest that this behavior is ubiquitous.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astrophysical Journal

ISSN

0004-637X

e-ISSN

—

Svazek periodika

850

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

000415832400002

EID výsledku v databázi Scopus

2-s2.0-85037703546