The candidate luminous blue variable G79.29+0.46: A comprehensive study of its ejecta through a multiwavelength analysis

C. Agliozzo, A. Noriega-Crespo, G. Umana, N. Flagey, C. Buemi, A. Ingallinera, C. Trigilio, P. Leto

Resultado de la investigación: Article

7 Citas (Scopus)

Resumen

We present a multiwavelength analysis of the nebula around the candidate luminous blue variable G79.29+0.46. The study is based on our radio observations performed at the Expanded Very Large Array and at the Green Bank Telescope and on archival infrared data sets, including recent images obtained by the Herschel Space Observatory. We confirm that the radio central object is characterized by a stellar wind and we derive a current mass-loss rate of about 1.4 × 10-6M yr-1.We find the presence of a dusty compact envelope close to the star, with a temperature between ̃40 and 1200 K. We estimate for the outer ejecta an ionized gas mass of 1.51M and a warm (60-85 K) dust mass of 0.02M. Diagnostics of the far-infrared spectra indicate the presence of a photodissociation region around the ionized gas. Finally, we model the nebula with the photoionization code CLOUDY, using as input parameters those estimated from our analysis. We find for the central star a luminosity of 105.4 LM and an effective temperature of 20.4 kK.

Idioma originalEnglish
Número de artículostu296
Páginas (desde-hasta)1391-1409
Número de páginas19
PublicaciónMonthly Notices of the Royal Astronomical Society
Volumen440
N.º2
DOI
EstadoPublished - 1 ene 2014

Huella dactilar

ejecta
ionized gases
nebulae
radio
stars
Very Large Array (VLA)
radio observation
stellar winds
gas
photodissociation
photoionization
observatories
envelopes
infrared spectra
observatory
dust
temperature
luminosity
telescopes
estimates

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Citar esto

Agliozzo, C., Noriega-Crespo, A., Umana, G., Flagey, N., Buemi, C., Ingallinera, A., ... Leto, P. (2014). The candidate luminous blue variable G79.29+0.46: A comprehensive study of its ejecta through a multiwavelength analysis. Monthly Notices of the Royal Astronomical Society, 440(2), 1391-1409. [stu296]. https://doi.org/10.1093/mnras/stu296
Agliozzo, C. ; Noriega-Crespo, A. ; Umana, G. ; Flagey, N. ; Buemi, C. ; Ingallinera, A. ; Trigilio, C. ; Leto, P. / The candidate luminous blue variable G79.29+0.46 : A comprehensive study of its ejecta through a multiwavelength analysis. En: Monthly Notices of the Royal Astronomical Society. 2014 ; Vol. 440, N.º 2. pp. 1391-1409.
@article{8034d7a4afb84b138739b35aa65ef949,
title = "The candidate luminous blue variable G79.29+0.46: A comprehensive study of its ejecta through a multiwavelength analysis",
abstract = "We present a multiwavelength analysis of the nebula around the candidate luminous blue variable G79.29+0.46. The study is based on our radio observations performed at the Expanded Very Large Array and at the Green Bank Telescope and on archival infrared data sets, including recent images obtained by the Herschel Space Observatory. We confirm that the radio central object is characterized by a stellar wind and we derive a current mass-loss rate of about 1.4 × 10-6M⊙ yr-1.We find the presence of a dusty compact envelope close to the star, with a temperature between ̃40 and 1200 K. We estimate for the outer ejecta an ionized gas mass of 1.51M⊙ and a warm (60-85 K) dust mass of 0.02M⊙. Diagnostics of the far-infrared spectra indicate the presence of a photodissociation region around the ionized gas. Finally, we model the nebula with the photoionization code CLOUDY, using as input parameters those estimated from our analysis. We find for the central star a luminosity of 105.4 LM⊙ and an effective temperature of 20.4 kK.",
keywords = "Infrared: ISM, ISM: bubbles, Radio continuum: ISM, Stars: early-type, Stars: evolution, Stars: mass-loss",
author = "C. Agliozzo and A. Noriega-Crespo and G. Umana and N. Flagey and C. Buemi and A. Ingallinera and C. Trigilio and P. Leto",
year = "2014",
month = "1",
day = "1",
doi = "10.1093/mnras/stu296",
language = "English",
volume = "440",
pages = "1391--1409",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",

}

Agliozzo, C, Noriega-Crespo, A, Umana, G, Flagey, N, Buemi, C, Ingallinera, A, Trigilio, C & Leto, P 2014, 'The candidate luminous blue variable G79.29+0.46: A comprehensive study of its ejecta through a multiwavelength analysis', Monthly Notices of the Royal Astronomical Society, vol. 440, n.º 2, stu296, pp. 1391-1409. https://doi.org/10.1093/mnras/stu296

The candidate luminous blue variable G79.29+0.46 : A comprehensive study of its ejecta through a multiwavelength analysis. / Agliozzo, C.; Noriega-Crespo, A.; Umana, G.; Flagey, N.; Buemi, C.; Ingallinera, A.; Trigilio, C.; Leto, P.

En: Monthly Notices of the Royal Astronomical Society, Vol. 440, N.º 2, stu296, 01.01.2014, p. 1391-1409.

Resultado de la investigación: Article

TY - JOUR

T1 - The candidate luminous blue variable G79.29+0.46

T2 - A comprehensive study of its ejecta through a multiwavelength analysis

AU - Agliozzo, C.

AU - Noriega-Crespo, A.

AU - Umana, G.

AU - Flagey, N.

AU - Buemi, C.

AU - Ingallinera, A.

AU - Trigilio, C.

AU - Leto, P.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - We present a multiwavelength analysis of the nebula around the candidate luminous blue variable G79.29+0.46. The study is based on our radio observations performed at the Expanded Very Large Array and at the Green Bank Telescope and on archival infrared data sets, including recent images obtained by the Herschel Space Observatory. We confirm that the radio central object is characterized by a stellar wind and we derive a current mass-loss rate of about 1.4 × 10-6M⊙ yr-1.We find the presence of a dusty compact envelope close to the star, with a temperature between ̃40 and 1200 K. We estimate for the outer ejecta an ionized gas mass of 1.51M⊙ and a warm (60-85 K) dust mass of 0.02M⊙. Diagnostics of the far-infrared spectra indicate the presence of a photodissociation region around the ionized gas. Finally, we model the nebula with the photoionization code CLOUDY, using as input parameters those estimated from our analysis. We find for the central star a luminosity of 105.4 LM⊙ and an effective temperature of 20.4 kK.

AB - We present a multiwavelength analysis of the nebula around the candidate luminous blue variable G79.29+0.46. The study is based on our radio observations performed at the Expanded Very Large Array and at the Green Bank Telescope and on archival infrared data sets, including recent images obtained by the Herschel Space Observatory. We confirm that the radio central object is characterized by a stellar wind and we derive a current mass-loss rate of about 1.4 × 10-6M⊙ yr-1.We find the presence of a dusty compact envelope close to the star, with a temperature between ̃40 and 1200 K. We estimate for the outer ejecta an ionized gas mass of 1.51M⊙ and a warm (60-85 K) dust mass of 0.02M⊙. Diagnostics of the far-infrared spectra indicate the presence of a photodissociation region around the ionized gas. Finally, we model the nebula with the photoionization code CLOUDY, using as input parameters those estimated from our analysis. We find for the central star a luminosity of 105.4 LM⊙ and an effective temperature of 20.4 kK.

KW - Infrared: ISM

KW - ISM: bubbles

KW - Radio continuum: ISM

KW - Stars: early-type

KW - Stars: evolution

KW - Stars: mass-loss

UR - http://www.scopus.com/inward/record.url?scp=84898998695&partnerID=8YFLogxK

U2 - 10.1093/mnras/stu296

DO - 10.1093/mnras/stu296

M3 - Article

AN - SCOPUS:84898998695

VL - 440

SP - 1391

EP - 1409

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 2

M1 - stu296

ER -