Zobrazeno 1 - 10
of 170
pro vyhledávání: '"Uttenthaler S."'
Autor:
Uttenthaler, S.
Publikováno v:
A&A 692, A224 (2024)
Context: L$_2$ Puppis (L$_2$ Pup) is a nearby red giant star and an important object in late-type star research because it has a dust disc and potentially a companion. Aims: L$_2$ Pup is often called the second-closest Asymptotic Giant Branch (AGB) s
Externí odkaz:
http://arxiv.org/abs/2411.13388
Autor:
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 dependence on stellar parameters. Mira variables are highly suitable targets for studying this
Externí odkaz:
http://arxiv.org/abs/2409.19604
Context. The complex dynamics of asymptotic giant branch (AGB) stars and the resulting stellar winds have a significant impact on the measurements of stellar parameters and amplify their uncertainties. Three-dimensional (3D) radiative hydrodynamic (R
Externí odkaz:
http://arxiv.org/abs/2409.03422
Publikováno v:
A&A 672, A165 (2023)
Some Miras -- long-period variables in late evolutionary stages -- have meandering pulsation periods and light curve asymmetries, the causes of which are still unclear. We aim to understand better the origin of these phenomena by investigating a samp
Externí odkaz:
http://arxiv.org/abs/2302.02206
Autor:
Scicluna, P., Kemper, F., McDonald, I., Srinivasan, S., Trejo, A., Wallström, S. H. J., Wouterloot, J. G. A., Cami, J., Greaves, J., He, Jinhua, Hoai, D. T., Kim, Hyosun, Jones, O. C., Shinnaga, H., Clark, C. J. R., Dharmawardena, T., Holland, W., Imai, H., van Loon, J. Th., Menten, K. M., Wesson, R., Chawner, H., Feng, S., Goldman, S., Liu, F. C., MacIsaac, H., Tang, J., Zeegers, S., Amada, K., Antoniou, V., Bemis, A., Boyer, M. L., Chapman, S., Chen, X., Cho, S. -H., Cui, L., Dell'Agli, F., Friberg, P., Fukaya, S., Gomez, H., Gong, Y., Hadjara, M., Haswell, C., Hirano, N., Hony, S., Izumiura, H., Jeste, M., Jiang, X., Kaminski, T., Keaveney, N., Kim, J., Kraemer, K. E., Kuan, Y. -J., Lagadec, E., Lee, C. F., Li, D., Liu, S. -Y., Liu, T., de Looze, I., Lykou, F., Maraston, C., Marshall, J. P., Matsuura, M., Min, C., Otsuka, M., Oyadomari, M., Parsons, H., Patel, N. A., Peeters, E., Pham, T. A., Qiu, J., Randall, S., Rau, G., Redman, M. P., Richards, A. M. S., Serjeant, S., Shi, C., Sloan, G. C., Smith, M. W. L., Suh, K. -W., Toalá, J. A., Uttenthaler, S., Ventura, P., Wang, B., Yamamura, I., Yang, T., Yun, Y., Zhang, F., Zhang, Y., Zhao, G., Zhu, M., Zijlstra, A. A.
The Nearby Evolved Stars Survey (NESS) is a volume-complete sample of $\sim$850 Galactic evolved stars within 3\,kpc at (sub-)mm wavelengths, observed in the CO $J = $ (2$-$1) and (3$-$2) rotational lines, and the sub-mm continuum, using the James Cl
Externí odkaz:
http://arxiv.org/abs/2110.12562
Autor:
Wood P.R., Ryde N., Lebzelter T., Blommaert J.A.D.L., Uttenthaler S., Schultheis M., Aringer B.
Publikováno v:
EPJ Web of Conferences, Vol 19, p 06009 (2012)
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 these stars to help constrain the formation history of the bulge. A further aim is to link t
Externí odkaz:
https://doaj.org/article/bd437b993b704d2aaa3833762a6abc3d
Autor:
Nicholls, C. P., Lebzelter, T., Smette, A., Wolff, B., Hartman, H., Käufl, H. -U., Przybilla, N., Ramsay, S., Uttenthaler, S., Wahlgren, G. M., Bagnulo, S., Hussain, G. A. J., Nieva, M. -F., Seeman, U., Seifahrt, A.
Publikováno v:
A&A 598, A79 (2017)
Context. High resolution stellar spectral atlases are valuable resources to astronomy. They are rare in the $1 - 5\,\mu$m region for historical reasons, but once available, high resolution atlases in this part of the spectrum will aid the study of a
Externí odkaz:
http://arxiv.org/abs/1609.07873
Autor:
McDonald, I., Zijlstra, A. A., Sloan, G. C., Lagadec, E., Johnson, C. I., Uttenthaler, S., Jones, O. C., Smith, C. L.
We explore the wind-driving mechanism of giant stars through the nearby (117 pc), intermediate-luminosity ($L \approx 1600$ L$_\odot$) star EU Del (HIP 101810, HD 196610). APEX observations of the CO (3--2) and (2--1) transitions are used to derive a
Externí odkaz:
http://arxiv.org/abs/1512.04695
The semi-regular variable star RU Vulpeculae (RU Vul) is being observed visually since 1935. Its pulsation period and amplitude are declining since $\sim1954$. A leading hypothesis to explain the period decrease in asymptotic giant branch (AGB) stars
Externí odkaz:
http://arxiv.org/abs/1511.03224
Autor:
Uttenthaler, S., Meingast, S., Lebzelter, T., Aringer, B., Joyce, R. R., Hinkle, K., Guzman-Ramirez, L., Greimel, R.
Publikováno v:
A&A 585, A145 (2016)
Context: The Mira variable LX Cyg showed a dramatic increase of its pulsation period in the recent decades and appears to undergo an important transition in its evolution. Aims: We aim at investigating the spectral type evolution of this star over th
Externí odkaz:
http://arxiv.org/abs/1511.02159