| Texto completo | |
| Autor(es): Mostrar menos - |
Aleman, Isabel
[1, 2]
;
Exter, Katrina
[3, 4, 5]
;
Ueta, Toshiya
[6]
;
Walton, Samuel
[7, 1]
;
Tielens, A. G. G. M.
[1]
;
Zijlstra, Albert
[8, 9, 10]
;
Montez, Jr., Rodolfo
[11]
;
Abraham, Zulema
[2]
;
Otsuka, Masaaki
[12]
;
Beaklini, Pedro P. B.
[2]
;
van Hoof, Peter A. M.
[13]
;
Villaver, Eva
[14]
;
Leal-Ferreira, Marcelo L.
[15]
;
Mendoza, Edgar
[2]
;
Lepine, Jacques D. R.
[2]
Número total de Autores: 15
|
| Afiliação do(s) autor(es): Mostrar menos - | [1] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden - Netherlands
[2] Univ Sao Paulo, IAG USP, Rua Matao 1226, Cidade Univ, BR-05508090 Sao Paulo, SP - Brazil
[3] Katholieke Univ Leuven, Inst Astron, Celestijnenlaan 200D, BUS 2401, B-3001 Leuven - Belgium
[4] European Space Astron Ctr, Herschel Sci Ctr, ESA, POB 78, Villanueva De La Canada - Spain
[5] ISDEFE, Beatriz Bobadilla 3, E-28040 Madrid - Spain
[6] Univ Denver, Dept Phys & Astron, 2112 E Wesley Ave, Denver, CO 80210 - USA
[7] Liverpool John Moores Univ, Astrophys Res Inst, Ic2, Liverpool Sci Pk, 146 Brownlow Hill, Liverpool L3 5RF, Merseyside - England
[8] Univ Manchester, Jodrell Bank Ctr Astrophys, Alan Turing Bldg, Manchester M13 9PL, Lancs - England
[9] Univ Hong Kong, Dept Phys, Pok Fu Lam Rd, Hong Kong, Hong Kong - Peoples R China
[10] Univ Hong Kong, Lab Space Res, Pok Fu Lam Rd, Hong Kong, Hong Kong - Peoples R China
[11] Smithsonian Astrophys Observ, Cambridge, MA 02138 - USA
[12] Inst Astron & Astrophys, AS NTU, 11F Astron Math Bldg, 1, Sect 4, Roosevel Rd, Taipei 10617 - Taiwan
[13] Royal Observ Belgium, Ringlaan 3, B-1180 Brussels - Belgium
[14] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid - Spain
[15] Univ Bonn, Argelander Inst Astron, Hugel 71, D-53121 Bonn - Germany
Número total de Afiliações: 15
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Monthly Notices of the Royal Astronomical Society; v. 477, n. 4, p. 4499-4510, JUL 2018. |
| Citações Web of Science: | 6 |
| Resumo | |
The bipolar nebula Menzel 3 (Mz 3) was observed as part of the Herschel Planetary Nebula Survey (HerPlaNS), which used the PACS and SPIRE instruments aboard the Herschel Space Observatory to study a sample of planetary nebulae (PNe). In this paper, one of the series describing HerPlaNS results, we report the detection of HI recombination lines (HRLs) in the spectrum of Mz 3. Inspection of the spectrum reveals the presence of 12 HRLs in the 55680 mu m range covered by the PACS and SPIRE instruments (H11 alpha to H21 alpha and H14 beta). The presence of HRLs in this range is unusual for PNe and has not been reported in Mz 3 before. Our analysis indicates that the HRLs we observed are enhanced by laser effect occurring in the core of Mz 3. Our arguments for this are (i) the available Mz 3 optical to submillimetre HRL alpha line intensity ratios are not well reproduced by the spontaneous emission of optically thin ionized gas, as would be typical for nebular gas in PNe; (ii) the compact core of Mz 3 is responsible for a large fraction of the Herschel HRLs emission; (iii) the line intensity ratios for Mz 3 are very similar to those in the core emission of the well known star MWC 349A, where laser effect is responsible for the enhancement of HRLs in the Herschel wavelength range; (iv) the physical characteristics relevant to cause laser effect in the core of MWC 349A are very similar to those in the core of Mz 3. (AU) | |
| Processo FAPESP: | 14/22095-6 - ACHEMOS: astroquímica da nossa origem, um estudo abrangente da química prebiótica em regiões pré-estelares |
| Beneficiário: | Edgar Fabián Mendoza Rodríguez |
| Linha de fomento: | Bolsas no Brasil - Pós-Doutorado |