Catching the fish – Constraining stellar parameters for TX Piscium using spectro-interferometric observations

  title={Catching the fish – Constraining stellar parameters for TX Piscium using spectro-interferometric observations},
  author={Daniela Klotz and Claudia Paladini and J. Hron and Bernhard Aringer and St'ephane Sacuto and Paola Marigo and Tijl Verhoelst},
  journal={Astronomy and Astrophysics},
Context. Stellar parameter determination is a challenging task when dealing with galactic giant stars. The combination of different investigation techniques has proven to be a promising approach. Aims. We analyse archive spectra obtained with the Short Wavelength Spectrometer (SWS) onboard ISO, and new interferometric observations from the Very Large Telescope MID-infrared Interferometric instrument (VLTI/MIDI) of a very well studied carbon-rich giant: TX Psc. The aim of this work is to… 
The complex environment of the bright carbon star TX Piscium as probed by spectro-astrometry
Stars on the asymptotic giant branch (AGB) show broad evidence of inhomogeneous atmospheres and circumstellar envelopes. These have been studied by a variety of methods on various angular scales. In
Aperture synthesis imaging of the carbon AGB star R Sculptoris - Detection of a complex structure and a dominating spot on the stellar disk
Aims. We present near-infrared interferometry of the carbon-rich asymptotic giant branch (AGB) star R Sculptoris (R Scl). Methods. We employ medium spectral resolution K-band interferometry obtained
The VLTI/MIDI view on the inner mass loss of evolved stars from the Herschel MESS sample
Context. The mass-loss process from evolved stars is a key ingredient for our understanding of many fields of astrophysics, including stellar evolution and the chemical enrichment of the interstellar
Properties of carbon stars in the solar neighbourhood based on Gaia DR2 astrometry
Context. Stars evolving along the asymptotic giant branch (AGB) can become carbon rich in the final part of their evolution. The detailed description of their spectra has led to the definition of
Constraining Stellar Parameters and Atmospheric Dynamics of the Carbon AGB star V Oph
Molecules and dust produced by the atmospheres of cool evolved stars contribute to a significant amount of the total material found in the interstellar medium. To understand the mechanism behind the
A H I Imaging Survey Of Asymptotic Giant Branch Stars
We present an imaging study of a sample of eight asymptotic giant branch stars in the H I 21 cm line. Using observations from the Very Large Array, we have unambiguously detected H I emission
Modelling the atmosphere of the carbon-rich Mira RU Virginis
Context. We study the atmosphere of the carbon-rich Mira RU Vir using the mid-infrared high spatial resolution interferometric observations from VLTI/MIDI. Aims. The aim of this work is to analyse
Evolution of thermally pulsing asymptotic giant branch stars – II. Dust production at varying metallicity
We present the dust ejecta of the new stellar models for the Thermally Pulsing Asymptotic Giant Branch (TP-AGB) phase computed with the COLIBRI code. We use a formalism of dust growth coupled with a
ALMA observations of the “fresh” carbon-rich AGB star TX Piscium
Aims. The carbon-rich asymptotic giant branch (AGB) star TX Piscium (TX Psc) has been observed multiple times during multiple epochs and at different wavelengths and resolutions, showing a complex
Evolution of thermally pulsing asymptotic giant branch stars - I. The COLIBRI code
We present the COLIBRI code for computing the evolution of stars along the TP-AGB phase. Compared to purely synthetic TP-AGB codes, COLIBRI relaxes a significant part of their analytic formalism in


Determination of the stellar parameters of C-rich hydrostatic stars from spectro-interferometric observations
Context. Giant stars, and especially C-rich giants, contribute sign ificantly to the chemical enrichment of galaxies. The determ ination of precise parameters for these stars is a necessary prerequ
Determining parameters of cool giant stars by modeling spectrophotometric and interferometric observations using the SAtlas program
Context. Optical interferometry is a powerful tool for observing the intensity structure and angular diameter of stars. When combined with spectroscopy and/or spectrophotometry, interferometry
Observing and modeling the dynamic atmosphere of the low mass-loss C-star R Sculptoris at high angular resolution
Context. We study the circumstellar environment of the carbon-rich star R Sculptoris using the near- and mid-infrared high spatial resolution observations from the ESO-VLTI focal instruments VINCI
The geometry of the close environment of SV Piscium as probed by VLTI/MIDI
Context. SVPsc is an asymptotic giant branch (AGB) star surrounded by an oxygen-rich dust envelope. The mm-CO line profile of the object's outflow shows a clear double-component structure. Because of
Mid-infrared sizes of circumstellar disks around Herbig Ae/Be stars measured with MIDI on the VLTI
We present the first long baseline mid-infrared interferometric observations of the circumstellar disks surrounding Herbig Ae/Be stars. The observations were obtained using the mid-infrared
J, H, K spectro-interferometry of the Mira variable S Orionis
Aims. We present J, H, K spectrally dispersed interferometry with a spectral resolution of 35 for the Mira variable S Orionis. We aim at measuring the diameter variation as a function of wavelength
Synthetic photometry for carbon rich giants I. Hydrostatic dust-free models ⋆
Context. Carbon rich objects represent an important phase during the late stages of evolution of low and intermediate mass stars. They contribute significantly to the chemical enrichment and to t he
Interferometric properties of pulsating C-rich AGB stars. Intensity profiles and uniform disc diamet
Aims. On the basis of a set of dynamic model atmospheres of C-rich AGB stars, we present the first theoretical study of centre-to-limb variation (CLV) properties and relative radius interpretation on
Geometrical model fitting for interferometric data: GEM-FIND
We developed the tool GEM-FIND that allows to constrain the morphology and brightness distribution of ob- jects. The software fits geometrical models to spectrally dispersed interferometric
AMBER observations of the AGB star RS Cap: extended atmosphere and comparison with stellar models
We report on K-band VLTI/AMBER observations at medium spectral resolution ($\sim$1500) of RS Capricorni, an M6/M7III semi-regular AGB star. From the spectrally-dispersed visibilities, we measure the