Study of the luminous blue variable star candidate G26.47+0.02 and its environment
Aims. The luminous blue variable (LBV) stars are peculiar very massive stars. The study of these stellar objects and their surroundings is important for understanding the evolution of massive stars and its effects on the interstellar medium. We study the LBV star candidate G26.47+0.02. Methods. Usin...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00046361_v543_n_p_Paron |
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todo:paper_00046361_v543_n_p_Paron2023-10-03T14:00:42Z Study of the luminous blue variable star candidate G26.47+0.02 and its environment Paron, S. Combi, J.A. Petriella, A. Giacani, E. ISM: clouds Stars: individual: G26.47+0.02 Stars: massive Stars: winds outflows Binary systems Chandra Different frequency Interstellar mediums ISM : clouds Luminous Blue Variables Massive stars Midinfrared Molecular gas Molecular shells Multi-wavelength study Multiwavelength Near-IR Nonthermal emission Radio continuum Stars: individual Stars: massive Stars: winds Stellar wind Molecules Stars Aims. The luminous blue variable (LBV) stars are peculiar very massive stars. The study of these stellar objects and their surroundings is important for understanding the evolution of massive stars and its effects on the interstellar medium. We study the LBV star candidate G26.47+0.02. Methods. Using several large-scale surveys in different frequencies we performed a multiwavelength study of G26.47+0.02 and its surroundings. Results. We found a molecular shell (seen in the 13CO J = 1-0 line) that partially surrounds the mid-infrared nebula of G26.47+0.02, which suggests an interaction between the strong stellar winds and the molecular gas. From the HI absorption and the molecular gas study we conclude that G26.47+0.02 is located at a distance of ~4.8 kpc. The radio continuum analysis shows both thermal and non-thermal emission toward this LBV candidate, pointing to wind-wind collision shocks from a binary system. This hypothesis is supported by a search of near-IR sources and the Chandra X-ray analysis. Additional multiwavelength and long-term observations are needed to detect some possible variable behavior, and if that is found, to confirm the binary nature of the system. © 2012 ESO. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v543_n_p_Paron |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ISM: clouds Stars: individual: G26.47+0.02 Stars: massive Stars: winds outflows Binary systems Chandra Different frequency Interstellar mediums ISM : clouds Luminous Blue Variables Massive stars Midinfrared Molecular gas Molecular shells Multi-wavelength study Multiwavelength Near-IR Nonthermal emission Radio continuum Stars: individual Stars: massive Stars: winds Stellar wind Molecules Stars |
| spellingShingle |
ISM: clouds Stars: individual: G26.47+0.02 Stars: massive Stars: winds outflows Binary systems Chandra Different frequency Interstellar mediums ISM : clouds Luminous Blue Variables Massive stars Midinfrared Molecular gas Molecular shells Multi-wavelength study Multiwavelength Near-IR Nonthermal emission Radio continuum Stars: individual Stars: massive Stars: winds Stellar wind Molecules Stars Paron, S. Combi, J.A. Petriella, A. Giacani, E. Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| topic_facet |
ISM: clouds Stars: individual: G26.47+0.02 Stars: massive Stars: winds outflows Binary systems Chandra Different frequency Interstellar mediums ISM : clouds Luminous Blue Variables Massive stars Midinfrared Molecular gas Molecular shells Multi-wavelength study Multiwavelength Near-IR Nonthermal emission Radio continuum Stars: individual Stars: massive Stars: winds Stellar wind Molecules Stars |
| description |
Aims. The luminous blue variable (LBV) stars are peculiar very massive stars. The study of these stellar objects and their surroundings is important for understanding the evolution of massive stars and its effects on the interstellar medium. We study the LBV star candidate G26.47+0.02. Methods. Using several large-scale surveys in different frequencies we performed a multiwavelength study of G26.47+0.02 and its surroundings. Results. We found a molecular shell (seen in the 13CO J = 1-0 line) that partially surrounds the mid-infrared nebula of G26.47+0.02, which suggests an interaction between the strong stellar winds and the molecular gas. From the HI absorption and the molecular gas study we conclude that G26.47+0.02 is located at a distance of ~4.8 kpc. The radio continuum analysis shows both thermal and non-thermal emission toward this LBV candidate, pointing to wind-wind collision shocks from a binary system. This hypothesis is supported by a search of near-IR sources and the Chandra X-ray analysis. Additional multiwavelength and long-term observations are needed to detect some possible variable behavior, and if that is found, to confirm the binary nature of the system. © 2012 ESO. |
| format |
JOUR |
| author |
Paron, S. Combi, J.A. Petriella, A. Giacani, E. |
| author_facet |
Paron, S. Combi, J.A. Petriella, A. Giacani, E. |
| author_sort |
Paron, S. |
| title |
Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| title_short |
Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| title_full |
Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| title_fullStr |
Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| title_full_unstemmed |
Study of the luminous blue variable star candidate G26.47+0.02 and its environment |
| title_sort |
study of the luminous blue variable star candidate g26.47+0.02 and its environment |
| url |
http://hdl.handle.net/20.500.12110/paper_00046361_v543_n_p_Paron |
| work_keys_str_mv |
AT parons studyoftheluminousbluevariablestarcandidateg2647002anditsenvironment AT combija studyoftheluminousbluevariablestarcandidateg2647002anditsenvironment AT petriellaa studyoftheluminousbluevariablestarcandidateg2647002anditsenvironment AT giacanie studyoftheluminousbluevariablestarcandidateg2647002anditsenvironment |
| _version_ |
1807322626615410688 |