Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20
We characterize an uncatalogued bright-rimmed cloud located at the border of the infrared dust bubble CN20 with the aim of investigating triggered star formation. In order to do this, we carried out radio continuum observations at 8.9 GHz using the Jansky Very Large Array (JVLA) interferometer with...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00358711_v458_n4_p3684_Ortega |
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todo:paper_00358711_v458_n4_p3684_Ortega2023-10-03T14:47:16Z Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 Ortega, M.E. Giacani, E. Paron, S. Rubio, M. H ii regions ISM: Clouds Stars: Formation We characterize an uncatalogued bright-rimmed cloud located at the border of the infrared dust bubble CN20 with the aim of investigating triggered star formation. In order to do this, we carried out radio continuum observations at 8.9 GHz using the Jansky Very Large Array (JVLA) interferometer with a synthesized beam size of 13 arcsec × 5 arcsec, and molecular observations using the Atacama Submillimeter Telescope Experiment (ASTE) at the 13CO J = 3-2 and CS J = 7-6 transitions. An analysis of the molecular observations and of Herschel public data revealed the presence of a warm and dense clump with Tdust ~ 25 K and n(H2) ~ 3 × 105 cm-3. The high angular resolution and sensitivity of the new radio continuum data revealed an arc-like radio filament in excellent correspondence with the illuminated border of the bright-rimmed cloud. This ionized boundary layer has an electron density of 176 cm-3. The spatial distribution of the young stellar object candidates probably related to the bright-rimmed cloud does not show clear evidence of a triggered origin. Finally, based on the evaluation of the pressure balance between the ionized and molecular gas, we conclude that the ionization front has stalled at the surface of the clump. © 2016 The Authors. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00358711_v458_n4_p3684_Ortega |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
H ii regions ISM: Clouds Stars: Formation |
| spellingShingle |
H ii regions ISM: Clouds Stars: Formation Ortega, M.E. Giacani, E. Paron, S. Rubio, M. Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| topic_facet |
H ii regions ISM: Clouds Stars: Formation |
| description |
We characterize an uncatalogued bright-rimmed cloud located at the border of the infrared dust bubble CN20 with the aim of investigating triggered star formation. In order to do this, we carried out radio continuum observations at 8.9 GHz using the Jansky Very Large Array (JVLA) interferometer with a synthesized beam size of 13 arcsec × 5 arcsec, and molecular observations using the Atacama Submillimeter Telescope Experiment (ASTE) at the 13CO J = 3-2 and CS J = 7-6 transitions. An analysis of the molecular observations and of Herschel public data revealed the presence of a warm and dense clump with Tdust ~ 25 K and n(H2) ~ 3 × 105 cm-3. The high angular resolution and sensitivity of the new radio continuum data revealed an arc-like radio filament in excellent correspondence with the illuminated border of the bright-rimmed cloud. This ionized boundary layer has an electron density of 176 cm-3. The spatial distribution of the young stellar object candidates probably related to the bright-rimmed cloud does not show clear evidence of a triggered origin. Finally, based on the evaluation of the pressure balance between the ionized and molecular gas, we conclude that the ionization front has stalled at the surface of the clump. © 2016 The Authors. |
| format |
JOUR |
| author |
Ortega, M.E. Giacani, E. Paron, S. Rubio, M. |
| author_facet |
Ortega, M.E. Giacani, E. Paron, S. Rubio, M. |
| author_sort |
Ortega, M.E. |
| title |
Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| title_short |
Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| title_full |
Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| title_fullStr |
Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| title_full_unstemmed |
Study of a bright-rimmed cloud at the border of the infrared dust bubble CN20 |
| title_sort |
study of a bright-rimmed cloud at the border of the infrared dust bubble cn20 |
| url |
http://hdl.handle.net/20.500.12110/paper_00358711_v458_n4_p3684_Ortega |
| work_keys_str_mv |
AT ortegame studyofabrightrimmedcloudattheborderoftheinfrareddustbubblecn20 AT giacanie studyofabrightrimmedcloudattheborderoftheinfrareddustbubblecn20 AT parons studyofabrightrimmedcloudattheborderoftheinfrareddustbubblecn20 AT rubiom studyofabrightrimmedcloudattheborderoftheinfrareddustbubblecn20 |
| _version_ |
1807324179285934080 |