Densidad electrónica en regiones H II gigantes
online first
PDF

Cómo citar

Caicedo Ortiz, H. E., & Castañeda-Fernández, H. O. . (2021). Densidad electrónica en regiones H II gigantes. RACCEFYN. https://doi.org/10.18257/raccefyn.1464

Descargas

Los datos de descargas todavía no están disponibles.

Métricas Alternativas

Resumen

Se estudió la densidad electrónica a escala global y punto a punto de las regiones H II gigantes Hubble V y Hubble X, localizadas en la galaxia NGC 6822, utilizando espectroscopia de rendija larga en el espectro visible. Los resultados obtenidos presentan por primera vez una medida de la variación espacial de la densidad electrónica de estas dos regiones H II gigantes, demostrando que poseen un comportamiento no homogéneo en su densidad a nivel local así como un régimen de baja densidad a nivel global y comprobando que la temperatura electrónica tienen una baja incidencia en su determinación.

https://doi.org/10.18257/raccefyn.1464

Palabras clave

Densidad Electrónica | Regiones HII Gigantes | NGC 6822 | Hubble V | Hubble X
PDF

Referencias

Aller, L. H. (1984). Physics of thermal gaseous nebulae (Vol. 112). Springer; 1 edición.

Bianchi, L., Scuderi, S., Massey, P., y Romaniello, M. (2001). The Massive Star Content of NGC 6822: Ground-Based, Hubble Space Telescope Photometry. AJ, 121, 2020-2031. doi: 10.1086/319969

Brandenburg, H. J., y Skillman, E. D. (1998). The Neutral Hydrogen in NGC 6822. En American astronomical society meeting abstracts (Vol. 30, p. 1354).

Caicedo-Ortiz, H. E., Santiago-Cortes, E., López-Bonilla, J., y Castañeda, H. O. (2015). Fractal dimension and turbulence in Giant HII Regions. Journal of Physics Conference Series, 582, 012049. doi: 10.1088/1742-6596/582/1/012049

Caicedo-Ortiz, H. E. (2011). Estudio de Regiones HII Gigantes (Tesis de Master no publicada). Instituto Politécnico Nacional (IPN), México.

Caicedo-Ortiz, H. E., Castañeda, H. O., y Santiago-Cortés, E. (2017). Fractalidad en regiones de Formación Estelar. Revista Brasileira de Ensino de Física, 39 3, e3308-1- e3308-8. doi: 10.1590/1806-9126-rbef-2017-0006

Caicedo-Ortiz, H. E., y Castañeda Fernández, H. O. (2019). Relationship Between the Ionization Energy and the Radial Velocity of the Ionized Gas in Gaseous Nebulae. Astrophysics, 62 (1), 57-68. doi: 10.1007/s10511-019-09564-9

Campbell-White, J., Ali, A. A., Froebrich, D., y Kume, A. (2020). Shape analysis of h ii regions–ii. synthetic observations. MNRAS, 496 4, 4311–4329.

Cannon, J. M., Walter, F., Armus, L., Bendo, G. J., Calzetti, D., Draine, B. T., . . . Thornley, M. D. (2006). The Nature of Infrared Emission in the Local Group Dwarf Galaxy NGC 6822 as Revealed by Spitzer. ApJ, 652, 1170-1187. doi: 10.1086/508341

Cantó, J., Elliott, K. H., Meaburn, J., y Theokas, A. C. (1980, 12). On the derivation of electron density and temperature from [S II] and [O II] line intensity ratios. MNRAS, 193 4, 911-919. doi: 10.1093/mnras/193.4.911

Castañeda, H. O., Vilchez, J. M., y Copetti, M. V. F. (1992). Density studies on giant extragalactic H II regions. A&A, 260, 370-380.

Clementini, G., Held, E. V., Baldacci, L., y Rizzi, L. (2003). RR Lyrae, Short-Period Variable Stars in the Dwarf Irregular Galaxy NGC 6822. ApJ, 588, L85-L88. doi: 10.1086/375633

Collier, J., y Hodge, P. (1994). The H II regions of NGC 6822. 3: A photometric atlas. ApJS, 92, 119-123. doi: 10.1086/191961

Copetti, M. V. F., Mallmann, J. A. H., Schmidt, A. A., y Castañeda, H. O. (2000). Internal variation of electron density in galactic HII regions. A&A, 357, 621-636.

Currie, M. J., Berry, D. S., Jenness, T., Gibb, A. G., Bell, G. S., y Draper, P. W. (2014, mayo). Starlink Software in 2013. En N. Manset y P. Forshay (Eds.), Astronomical data analysis software and systems xxiii (Vol. 485, p. 391).

de Blok, W. J. G., y Walter, F. (2000). Evidence for Tidal Interaction, a Supergiant H I Shell in the Local Group Dwarf Galaxy NGC 6822. ApJ, 537, L95-L98. doi: 10.1086/312777

De Robertis, M. M., Dufour, R. J., y Hunt, R. W. (1987). A five-level program for ions of astrophysical interest. JRASC, 81, 195-220.

de Vaucouleurs, G., de Vaucouleurs, A., Corwin, H. G., Jr., Buta, R. J., Paturel, G., y Fouque, P. (1991). Third Reference Catalogue of Bright Galaxies (G. de Vaucouleurs, A. de Vaucouleurs, H. G. Corwin Jr., R. J. Buta, G. Paturel, y P. Fouque, Eds.).

De Grijs, R. (2011). An introduction to distance measurement in astronomy. John Wiley & Sons. Diaz, A. I., Terlevich, E., Vilchez, J. M., Pagel, B. E. J., y Edmunds, M. G. (1991). Abundance analysis of giant H II regions in M51. MNRAS, 253, 245-255.

Eskridge, P. B., y White, R. E., III. (1997). The nature of the X-ray point source in the bar of NGC 6822. AJ, 114, 988-996. doi:10.1086/118529

Esteban, C., Bresolin, F., Peimbert, M., García-Rojas, J., Peimbert, A., y Mesa-Delgado, A. (2009). Keck HIRES Spectroscopy of Extragalactic H II Regions: C and O Abundances from Recombination Lines. ApJ, 700, 654-678. doi: 10.1088/0004-637X/700/1/654

Evans, I. N., y Dopita, M. A. (1985). Theoretical models for H II regions. I - Diagnostic diagrams. ApJS, 58, 125-142. doi: 10.1086/191032

Fleming, L. (2021). Synthetic observations of line emission from simulated hii regions (Tesis de Master no publicada).

Gallagher, J. S., III, Hunter, D. A., Gillett, F. C., y Rice, W. L. (1991). Far-infrared properties of NGC 6822. ApJ, 371, 142-147. doi:10.1086/169878

Gallart, C., Aparicio, A., Bertelli, G., y Chiosi, C. (1996a). The Local Group Dwarf Irregular Galaxy NGC 6822.III. The Recent Star Formation History. AJ, 112, 2596. doi: 10.1086/118205

Gallart, C., Aparicio, A., Bertelli, G., y Chiosi, C. (1996b). The Local Group Dwarf Irregular Galaxy NGC 6822.II.The Old, Intermediate -Age Star Formation History. AJ, 112, 1950. doi: 10.1086/118154

Geen, S., Soler, J. D., y Hennebelle, P. (2017). Interpreting the star formation efficiency of nearby molecular clouds with ionizing radiation. MNRAS, 471 4, 4844–4855.

Gottesman, S. T., y Weliachew, L. (1977). An interferometer study of the neutral hydrogen associated with the optical core of the irregular galaxy NGC 6822. A&A, 61, 523-530.

Gratier, P., Braine, J., Rodriguez-Fernandez, N. J., Israel, F. P., Schuster, K. F., Brouillet, N., y Gardan, E. (2010). The molecular interstellar medium of the Local Group dwarf NGC 6822. The molecular ISM of NGC 6822. A&A, 512, A68. doi:10.1051/0004-6361/200911722

Haworth, T. J., Glover, S. C., Koepferl, C. M., Bisbas, T. G., y Dale, J. E. (2018). Synthetic observations of star formation and the interstellar medium. New Astronomy Reviews, 82, 1–58.

Hidalgo-Gámez, A. M., Olofsson, K., y Masegosa, J. (2001). The chemical abundances in a sample of dwarf irregular galaxies. I. Small scale variations within NGC 6822? A&A, 367, 388-404. doi: 10.1051/0004-6361:20010063

Hidalgo-Gámez, A. M., y Peimbert, A. (2007). Diffuse Ionized Gas inside the Dwarf Irregular Galaxy NGC 6822. AJ, 133, 1874-1882. doi: 10.1086/511267

Hodge, P., Lee, M. G., y Kennicutt, R. C., Jr. (1988). The H II regions of NGC 6822. I - an atlas of 157 H II regions. PASP, 100, 917-934. doi:10.1086/132254

Hodge, P., Lee, M. G., y Kennicutt, R. C., Jr. (1989). The H II regions of NGC 6822. II - The luminosity function, size distribution. PASP, 101, 32-39. doi: 10.1086/132401

Hubble, E. (1925). Ngc 6822: A remote stellar system (no 304).

Hubble, E. P. (1925). NGC 6822, a remote stellar system. ApJ, 62, 409-433. doi:10.1086/142943

Hutchings, J. B., Cavanagh, B., y Bianchi, L. (1999). The Resolved Outer Population of NGC 6822 with WFPC2. PASP, 111, 559-565. doi:10.1086/316366

Israel, F. P. (1997). Dust, molecules in the Local Group galaxy NGC 6822. II. CO, molecular hydrogen. A&A, 317, 65-72.

Israel, F. P., Baas, F., Rudy, R. J., Skillman, E. D., y Woodward, C. E. (2003). Dust, molecules in the Local Group galaxy NGC 6822. III. The first-ranked HII region complex Hubble V. A&A, 397, 87-97. doi: 10.1051/0004-6361:20021464

Karachentsev, I. D., Karachentseva, V. E., Huchtmeier, W. K., y Makarov, D. I. (2004). A Catalog of Neighboring Galaxies. AJ, 127, 2031-2068. doi: 10.1086/382905

Keenan, F. P., Aller, L. H., Bell, K. L., Hyung, S., McKenna, F. C., y Ramsbottom, C. A. (1996). Auroral and nebular emission lines of [SII] in the optical spectra of planetary nebulae. MNRAS, 281, 1073-1080.

Kennicutt, R. C., Jr. (1979). H II Regions as Extragalactic Distance Indicators. III. Application of H II Region Fluxes, Galaxy Diameters. ApJ, 228, 704-711. doi:10.1086/156895

Lagrois, D., y Joncas, G. (2009). A Multi-ionic Kinematic Investigation of NGC 595, a Giant Extragalactic H II Region in M33. ApJ, 700, 1847-1877. doi: 10.1088/0004-637X/700/2/1847

Lee, H., Skillman, E. D., y Venn, K. A. (2006). The Spatial Homogeneity of Nebular, Stellar Oxygen Abundances in the Local Group Dwarf Irregular Galaxy NGC 6822. ApJ, 642, 813-833. doi: 10.1086/500568

Lequeux, J., Peimbert, M., Rayo, J. F., Serrano, A., y Torres-Peimbert, S. (1979). Chemical composition, evolution of irregular, blue compact galaxies. A&A, 80, 155-166.

Letarte, B., Demers, S., Battinelli, P., y Kunkel, W. E. (2002). The Extent of NGC 6822 Revealed by Its C Star Population. AJ, 123, 832-839. doi: 10.1086/338319

Longo, G., y Ceriello, M., A.and Capaccioli. (1991). The UV properties of normal galaxies. I - The IUE data. A&AS, 90, 375-386.

López Sánchez, A. (2006). Formación de estrellas masivas en galaxias Wolf-Rayet enanas (Tesis Doctoral no publicada). Departamento de Astrofísica, Universidad de la Laguna.

Maíz-Apellániz, J., Pérez, E., y Mas-Hesse, J. M. (2004a). NGC 604, the Scaled OB Association (SOBA) Prototype. I. Spatial Distribution of the Different Gas Phases and Attenuation by Dust. AJ, 128, 1196-1218. doi: 10.1086/422925

Maíz-Apellániz, J., Pérez, E., y Mas-Hesse, J. M. (2004b). NGC 604, the Scaled OB Association (SOBA) Prototype. I. Spatial Distribution of the Different Gas Phases, Attenuation by Dust. AJ, 128, 1196-1218. doi: 10.1086/422925

Mateo, M. L. (1998). Dwarf Galaxies of the Local Group. ARA&A, 36, 435-506. doi:10.1146/annurev.astro.36.1.435

McCall, M. L. (1984). Emission coefficients for gaseous nebulae - Three-level atom approximations. MNRAS, 208, 253-259.

O’Dell, C. R., Hodge, P. W., y Kennicutt, R. C., Jr. (1999). A Hubble Space Telescope Study of Two HII Regions in NGC 6822. PASP, 111, 1382-1391. doi:10.1086/316452

Oliveira, V. A. (2009). A spectrophotometric study of HII regions in chemically young galaxies (Tesis Doctoral no publicada). Universidade Federal de Santa maria., Santa Maria, RS, Brasil,.

Osterbrock, D. E., y Ferland, G. J. (2006). Astrophysics of Gaseous Nebulae, Active Galactic Nuclei. University Science Books; 2 edición.

Pagel, B. E. J., Edmunds, M. G., y Smith, G. (1980). On the composition of H II regions in southern galaxies. II - NGC 6822, 1313. MNRAS, 193, 219-230.

Peimbert, A., Peimbert, M., y Ruiz, M. T. (2005). Chemical Composition of Two H II Regions in NGC 6822 based on VLT Spectroscopy. ApJ, 634, 1056-1066. doi:10.1086/444557

Peimbert, M., y Spinrad, H. (1970). On the Chemical Abundance of NGC 6822. A&A, 7, 311.

Pellegrini, E. W., Rahner, D., Reissl, S., Glover, S. C., Klessen, R. S., Rousseau-Nepton, L., y Herrera-Camus, R. (2020). warpfield-emp: The self-consistent prediction of emission lines from evolving h ii regions in dense molecular clouds. MNRAS, 496 1, 339–363.

Pérez Oregón, J., Caicedo-Ortiz, H. E., Castañeda Fernández, H. O., y Hidalgo-Gámez, A. M. (2014). La estructura interna de regiones HII gigantes. Jou. Cie. Ing., 6 (1), 16–20. doi: 10.46571/JCI.2014.1.4

Phillips, J. P. (1998). Electron densities in planetary nebulae, and the unusual characteristics of the [s ii] emission zone. A&A, 340, 527-542.

Pietrzy´ nski, G., Gieren, W., Udalski, A., Bresolin, F., Kudritzki, R.-P., . . . Kubiak, M. (2004). The Araucaria Project: The Distance to the Local Group Galaxy NGC 6822 from Cepheid Variables Discovered in a Wide-Field Imaging Survey. AJ, 128, 2815-2825. doi:10.1086/425531

Rayo, J. F., Peimbert, M., y Torres-Peimbert, S. (1982). Gradients in the physical conditions of M101, the pregalactic helium abundance. ApJ, 255, 1-10. doi:10.1086/159796

Relaño, M., Monreal-Ibero, A., Vílchez, J. M., y Kennicutt, R. C. (2010). Spatially resolved study of the physical properties of the ionized gas in NGC 595. MNRAS, 402, 1635-1648. doi: 10.1111/j.1365-2966.2009.16036.x

Relano, M., Beckman, J., Zurita, A., Rozas, M., y Giammanco, C. (2005). The internal dynamical equilibrium of h ii regions: A statistical study. Astronomy & Astrophysics, 431 1, 235–251.

Rosa, M., y Solf, J. (1984). The internal kinematics of the giant extragalactic H II complex NGC 604. A&A, 130, 29-38.

Roy, J. R., y Arsenault, R. (1986). The H-alpha velocity widths of giant H II regions as distance indicators. ApJ, 302, 579-584. doi:10.1086/164016

Rubin, R. H. (1968). The Structure, Properties of H II Regions. ApJ, 153, 761. doi:10.1086/149704

Seaton, M. J., y Osterbrock, D. E. (1957). Relative [OII] Intensities in Gaseous Nebulae. ApJ, 125, 66. doi: 10.1086/146282

Shaw, R. A., y Dufour, R. J. (1995). Software for the Analysis of Emission Line Nebulae. PASP, 107, 896. doi: 10.1086/133637

Shields, G. A. (1990). Extragalactic H II regions. ARA&A, 28, 525-560. doi: 10.1146/annurev.aa.28.090190.002521

Skillman, E. D., Terlevich, R., y Melnick, J. (1989). Abundances in southern Local Group dwarf irregular galaxies. MNRAS, 240, 563-572.

Smith, H. E. (1975). Spectrophotometric observations of ionized hydrogen regions in nearby spiral, irregular galaxies. ApJ, 199, 591-610. doi: 10.1086/153727

Stanghellini, L., y Kaler, J. B. (1989). Electron densities in planetary nebulae. ApJ, 343, 811-827. doi: 10.1086/167751

Stasi´ nska, G. (1980). Some comments on the analysis of extragalactic H II regions spectra. A&A, 84, 320-328.

Strömgren, B. (1939). The Physical State of Interstellar Hydrogen. ApJ, 89, 526. doi:10.1086/144074

Struve, O., y Elvey, C. T. (1934, mayo). The Intensities of Stellar Absorption Lines. ApJ, 79, 409. doi: 10.1086/143551

Tennant, A. F. (2006). Chandra Observation of NGC 6822. AJ, 132, 1372-1383. doi:10.1086/506511

Tolstoy, E., Irwin, M. J., Cole, A. A., Pasquini, L., Gilmozzi, R., y Gallagher, J. S. (2001). Using the CaII triplet to trace abundance variations in individual red giant branch stars in three nearby galaxies. MNRAS, 327, 918-938. doi: 10.1046/j.1365-8711.2001.04785.x

Tomita, A., Ohta, K., y Saito, M. (1993). H-alpha velocity fields of giant H II regions in four nearby dwarf irregular galaxies. PASJ, 45, 693-705.

Venn, K. A., Lennon, D. J., Kaufer, A., McCarthy, J. K., Przybilla, N., Kudritzki, R. P., . . . Smartt, S. J. (2001). First Stellar Abundances in NGC 6822 from VLT-UVES, Keck-HIRES Spectroscopy. ApJ, 547, 765-776. doi: 10.1086/318424

Vílchez, J. M., Pagel, B. E. J., Diaz, A. I., Terlevich, E., y Edmunds, M. G. (1988). The chemical composition gradient across M 33. MNRAS, 235, 633-653.

Weldrake, D. T. F., de Blok, W. J. G., y Walter, F. (2003). A high-resolution rotation curve of NGC 6822: a test-case for cold dark matter. MNRAS, 340, 12-28. doi:10.1046/j.1365-8711.2003.06170.x

White, N. J. (1981). The dynamics and structure of the ionized and neutral gas in the 30 Doradus nebula. Ap&SS, 78, 443-461. doi:10.1007/BF00648950

Wilson, C. D. (1992). The stellar populations of NGC 6822. AJ, 104, 1374-1394. doi:10.1086/116327

Wyder, T. K. (2001). The Star Formation History of NGC 6822. AJ, 122, 2490-2523. doi:10.1086/323706

Zheng, W. (1988). The critical densities for some emission lines. Astrophysical Letters Communications, 27, 275-279.

Creative Commons License

Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.

Derechos de autor 2021 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales