The physical properties of T Pyx as measured by MUSE: I. The geometrical distribution of the ejecta and the distance to the remnant

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00586939" target="_blank" >RIV/67985815:_____/24:00586939 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0354892" target="_blank" >https://hdl.handle.net/11104/0354892</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202348875" target="_blank" >10.1051/0004-6361/202348875</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The physical properties of T Pyx as measured by MUSE: I. The geometrical distribution of the ejecta and the distance to the remnant

Popis výsledku v původním jazyce

Context. T Pyx is one of the most enigmatic recurrent novae, and it has been proposed as a potential Galactic type-Ia supernova progenitor. Aims. Using spatially resolved data obtained with MUSE, we characterized the geometrical distribution of the material expelled in previous outbursts surrounding the white dwarf progenitor. Methods. We used a 3D model for the ejecta to determine the geometric distribution of the extended remnant. We also calculated the nebular parallax distance (d = 3.55 +/- 0.77 kpc) based on the measured velocity and spatial shift of the 2011 bipolar ejecta. Our findings confirm previous results, including the data from the Gaia mission. Results. The remnant of T Pyx can be described by a two-component model consisting of a tilted ring at i = 63.7 relative to its normal vector and fast bipolar ejecta perpendicular to the plane of the equatorial ring. Conclusions. We found an upper limit for the bipolar outflow ejected mass in 2011 of the bipolar outflow of M-ej,M- b < (3.0 +/- 1.0)x10(-6) M-circle dot, which is lower than previous estimates given in the literature. However, only a detailed physical study of the equatorial component can provide an accurate estimate of the total ejecta of the last outburst, a fundamental step to understanding if T Pyx will end its life as a type-Ia supernova.

Název v anglickém jazyce

The physical properties of T Pyx as measured by MUSE: I. The geometrical distribution of the ejecta and the distance to the remnant

Popis výsledku anglicky

Context. T Pyx is one of the most enigmatic recurrent novae, and it has been proposed as a potential Galactic type-Ia supernova progenitor. Aims. Using spatially resolved data obtained with MUSE, we characterized the geometrical distribution of the material expelled in previous outbursts surrounding the white dwarf progenitor. Methods. We used a 3D model for the ejecta to determine the geometric distribution of the extended remnant. We also calculated the nebular parallax distance (d = 3.55 +/- 0.77 kpc) based on the measured velocity and spatial shift of the 2011 bipolar ejecta. Our findings confirm previous results, including the data from the Gaia mission. Results. The remnant of T Pyx can be described by a two-component model consisting of a tilted ring at i = 63.7 relative to its normal vector and fast bipolar ejecta perpendicular to the plane of the equatorial ring. Conclusions. We found an upper limit for the bipolar outflow ejected mass in 2011 of the bipolar outflow of M-ej,M- b < (3.0 +/- 1.0)x10(-6) M-circle dot, which is lower than previous estimates given in the literature. However, only a detailed physical study of the equatorial component can provide an accurate estimate of the total ejecta of the last outburst, a fundamental step to understanding if T Pyx will end its life as a type-Ia supernova.

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

2024

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Svazek periodika

686

Číslo periodika v rámci svazku

June

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

9

Strana od-do

A72

Kód UT WoS článku

001235820200006

EID výsledku v databázi Scopus

2-s2.0-85195030197