Search Results - "Aringer, B"

Synthetic photometry for M and K giants and stellar evolution: hydrostatic dust-free model atmospheres and chemical abundances by Aringer, B., Girardi, L., Nowotny, W., Marigo, P., Bressan, A.

“…Based on a grid of hydrostatic spherical comarcs models for cool stars, we have calculated observable properties of these objects, which will be mainly used in…”
Get full text

A Dramatic Decrease in Carbon Star Formation in M31 by Boyer, M. L., Williams, B. F., Aringer, B., Chen, Y., Dalcanton, J. J., Girardi, L., Guhathakurta, P., Marigo, P., Olsen, K. A. G., Rosenfield, P., Weisz, D. R.

“…We analyze resolved stellar near-infrared photometry of 21 Hubble Space Telescope (HST) fields in M31 to constrain the impact of metallicity on the formation…”
Get full text

Carbon stars with increased oxygen and nitrogen abundances: hydrostatic dust-free model atmospheres by Aringer, B, Marigo, P, Nowotny, W, Girardi, L, Mečina, M, Nanni, A

“…We have computed a grid of hydrostatic spherical COMARCS models for C stars covering metallicities from [Z/H] = 0 to -2 and values of the carbon excess [C-O]…”
Get full text

Understanding AGB evolution in Galactic bulge stars from high-resolution infrared spectroscopy by Uttenthaler, S., Blommaert, J. A. D. L., Wood, P. R., Lebzelter, T., Aringer, B., Schultheis, M., Ryde, N.

“…An analysis of high-resolution near-infrared spectra of a sample of 45 asymptotic giant branch (AGB) stars towards the Galactic bulge is presented. The sample…”
Get full text

Molecular Opacities for Low-Mass Metal-poor AGB Stars Undergoing the Third Dredge-up by Cristallo, S, Straniero, O, Lederer, M. T, Aringer, B

“…The concomitant overabundances of C, N, and s-process elements are commonly ascribed to the complex interplay of nucleosynthesis, mixing, and mass loss taking…”
Get full text

IS THERE A METALLICITY CEILING TO FORM CARBON STARS?—A NOVEL TECHNIQUE REVEALS A SCARCITY OF C STARS IN THE INNER M31 DISK by Boyer, M L, Girardi, L, Marigo, P, Williams, B F, Aringer, B, Nowotny, W, Rosenfield, P, Dorman, C E, Guhathakurta, P, Dalcanton, J J, Melbourne, J L, Olsen, K A G, Weisz, D R

“…We use medium-band near-infrared (NIR) Hubble Space Telescope WFC3 photometry with model NIR spectra of asymptotic giant branch (AGB) stars to develop a new…”
Get full text

Temporal Changes in the Infrared Spectra of Magellanic Carbon Stars by Sloan, G. C., Kraemer, K. E., Aringer, B., Cami, J., Eriksson, K., Höfner, S., Lagadec, E., Matsuura, M., McDonald, I., Montiel, E., Sahai, R., Zijlstra, A. A.

“…The Medium-Resolution Spectrometer on the Mid-Infrared Instrument on the JWST obtained spectra of three carbon stars in the Large Magellanic Cloud. Two of the…”
Get full text

A CH star in the globular cluster NGC 6426 by Sharina, M., Aringer, B., Davoust, E., Kniazev, A. Y., Donzelli, C. J.

“…ABSTRACT We report on the serendipitous discovery of a carbon star near the centre of the low‐metallicity globular cluster NGC 6426. We determined its…”
Get full text

The Fluorine Abundance in a Galactic Bulge AGB Star Measured from CRIRES Spectra by Uttenthaler, S, Aringer, B, Lebzelter, T, Käufl, H. U, Siebenmorgen, R, Smette, A

“…We present measurements of the fluorine abundance in a Galactic bulge asymptotic giant branch (AGB) star. The measurements were performed using high-resolution…”
Get full text

Elemental abundances in AGB stars and the formation of the Galactic bulge by Uttenthaler, S., Blommaert, J.A.D.L., Lebzelter, T., Ryde, N., Wood, P.R., Schultheis, M., Aringer, B.

“…We obtained high-resolution near-IR spectra of 45 AGB stars located in the Galactic bulge. The aim of the project is to determine key elemental abundances in…”
Get full text

A NEW GENERATION OF PARSEC-COLIBRI STELLAR ISOCHRONES INCLUDING THE TP-AGB PHASE by Marigo, Paola, Girardi, Léo, Bressan, Alessandro, Rosenfield, Philip, Aringer, Bernhard, Chen, Yang, Dussin, Marco, Nanni, Ambra, Pastorelli, Giada, Rodrigues, Thaíse S., Trabucchi, Michele, Bladh, Sara, Dalcanton, Julianne, Groenewegen, Martin A. T., Montalbán, Josefina, Wood, Peter R.

“…We introduce a new generation of PARSEC-COLIBRI stellar isochrones that includes a detailed treatment of the thermally pulsing asymptotic giant branch (TP-AGB)…”
Get full text

Constraining dust properties in circumstellar envelopes of C-stars in the Small Magellanic Cloud: optical constants and grain size of carbon dust by Nanni, Ambra, Marigo, Paola, Groenewegen, Martin A. T., Aringer, Bernhard, Girardi, Léo, Pastorelli, Giada, Bressan, Alessandro, Bladh, Sara

“…We present a new approach aimed at constraining the typical size and optical properties of carbon dust grains in circumstellar envelopes (CSEs) of carbon-rich…”
Get full text

Silicate dust emission in sr variables by Aringer, B., Hron, J.

Get full text

CO observations of semiregular variables by Kerschbaum, F., Olofsson, H., Hron, J., Aringer, B.

Get full text

Sio observations of mass-losing AGB stars by Aringer, B., Wiedemann, G., K ufl, H. U., Hron, J.

Get full text

AESOPUS 2.0: Low-Temperature Opacities with Solid Grains by Marigo, P, Woitke, P, Tognelli, E, Girardi, L, Aringer, B, Bressan, A

“…In this study we compute the equation of state and Rosseland mean opacity from temperatures of T~30000 K down to T~400 K, pushing the capabilities of the…”
Get full text

The impact of third dredge-up on the mass loss of Mira variables by Uttenthaler, S, Shetye, S, Nanni, A, Aringer, B, Eriksson, K, McDonald, I, Gobrecht, D, Höfner, S, Wolter, U, Cristallo, S, Bernhard, K

“…Context: The details of the mass-loss process in the late stages of low- and intermediate-mass stellar evolution are not well understood, in particular its…”
Get full text

An extensive grid of DARWIN models for M-type AGB stars I. Mass-loss rates and other properties of dust-driven winds by Bladh, S, Liljegren, S, Höfner, S, Aringer, B, Marigo, P

“…The purpose of this work is to present an extensive grid of dynamical atmosphere and wind models for M-type AGB stars, covering a wide range of relevant…”
Get full text

Carbon star wind models at solar and sub-solar metallicities: a comparative study. I. Mass loss and the properties of dust-driven winds by Bladh, S, Eriksson, K, Marigo, P, Liljegren, S, Aringer, B

“…A&A 623, A119 (2019) The atmospheres and winds of C-type AGB stars are modeled with the 1D spherically symmetric radiation-hydrodynamical code DARWIN. To…”
Get full text

An impressionist view of V Hydrae. When MATISSE paints Asymmetric Giant Blobs by Planquart, L, Paladini, C, Jorissen, A, Escorza, A, Pantin, E, Drevon, J, Aringer, B, Baron, F, Chiavassa, A, Cruzalèbes, P, Danchi, W, De Beck, E, Groenewegen, M. A. T, Höfner, S, Hron, J, Khouri, T, Lopez, B, Lykou, F, Montarges, M, Nardetto, N, Ohnaka, K, Olofsson, H, Rau, G, Rosales-Guzmán, A, Sanchez-Bermudez, J, Scicluna, P, Siess, L, Thévenin, F, Van Eck, S, Vlemmings, W. H. T, Weigelt, G, Wittkowski, M

“…A&A 687, A306 (2024) Our purpose is to study the effect of binary companions located within the first 10 stellar radii from the primary AGB star. In this work,…”
Get full text