Integral field spectroscopy of local LCBGs: NGC 7673, a case study. Physical properties of star-forming regions
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2011
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Adelman-McCarthy J. K. et al., 2006, ApJS, 162, 38
Allende Prieto C., Lambert D. L., Asplund M., 2001, ApJ, 556, L63
Alloin D., Collin-Souffrin S., Joly M., Vigroux L., 1979, A&A, 78, 200
Bell E. F., 2003, ApJ, 586, 794
Boselli A., Gavazzi G., Sanvito G., 2003, A&A, 402, 37
Brinchmann J., Charlot S., White S. D. M., Tremonti C., Kauffmann G., Heckman T., Brinkmann J., 2004, MNRAS, 351, 1151
Calzetti D., Kinney A. L., Storchi-Bergmann T., 1994, ApJ, 429, 582
Calzetti D., Armus L., Bohlin R. C., Kinney A. L., Koornneef J., StorchiBergmann T., 2000, ApJ, 533, 682
Cardelli J. A., Clayton G. C., Mathis J. S., 1989, ApJ, 345, 245
Castellanos M., 2000, PhD thesis, Universidad Autonoma de Madrid
Charlot S., Longhetti M., 2001, MNRAS, 323, 887
Condon J. J., Yin Q. F., 1990, ApJ, 357, 97
Cortese L., Boselli A., Franzetti P., Decarli R., Gavazzi G., Boissier S., Buat V., 2008, MNRAS, 386, 1157
Denicoló G., Terlevich R., Terlevich E., 2002, MNRAS, 330, 69 Dopita M. A., Evans I. N., 1986, ApJ, 307, 431
Duflot-Augarde R., Alloin D., 1982, A&A, 112, 257
Förster Schreiber N. M. et al., 2006, ApJ, 645, 1062
Gallego J., Zamorano J., Rego M., Alonso O., Vitores A. G., 1996, A&AS, 120, 323
Garland C. A., Williams J. P., Pisano D. J., Guzmán R., Castander F. J., Brinkmann J., 2005, ApJ, 624, 714
Garland C. A., Pisano D. J., Williams J. P., Guzmán R., Castander F. J., Sage L. J., 2007, ApJ, 671, 310
Gil de Paz A. et al., 2007, ApJS, 173, 185
Guzmán R., Gallego J., Koo D. C., Phillips A. C., Lowenthal J. D., Faber S. M., Illingworth G. D., Vogt N. P., 1997, ApJ, 489, 559
Guzmán R., Jangren A., Koo D. C., Bershady M. A., Simard L., 1998, ApJ, 495, L13
Hammer F., Gruel N., Thuan T. X., Flores H., Infante L., 2001, ApJ, 550, 570
Heckman T. M., Armus L., Miley G. K., 1990, ApJS, 74, 833
Homeier N. L., Gallagher J. S., 1999, ApJ, 522, 199
Homeier N., Gallagher J. S., III, Pasquali A., 2002, A&A, 391, 857
Houck J. R. et al., 2004, ApJS, 154, 18
Hoyos C., Koo D. C., Phillips A. C., Willmer C. N. A., Guhathakurta P., 2005, ApJ, 635, L21
Huchra J. P., 1977, ApJS, 35, 171
Huchra J. P., Vogeley M. S., Geller M. J., 1999, ApJS, 121, 287
Izotov Y. I., Thuan T. X., Lipovetsky V. A., 1994, ApJ, 435, 647
Jog C. J., Das M., 1992, ApJ, 400, 476
Kelz A. et al., 2006, PASP, 118, 129
Kennicutt R. C., Jr, 1998a, ARA&A, 36, 189
Kennicutt R. C., Jr, 1998b, ApJ, 498, 541
Kewley L. J., Dopita M. A., 2002, ApJS, 142, 35
Kobulnicky H. A., Zaritsky D., 1999, ApJ, 511, 118
Koo D. C., Bershady M. A., Wirth G. D., Stanford S. A., Majewski S. R., 1994, ApJ, 427, L9
Kurucz R. L., 1992, in Barbuy B., Renzini A., eds, Proc. IAU Symp. 149, The Stellar Populations of Galaxies. Kluwer, Dordrecht, p. 225
Lowenthal J. D. et al., 1997, ApJ, 481, 673
Maeder A., Conti P. S., 1994, ARA&A, 32, 227
Markarian B. E., Lipovetsky V. A., Stepanian J. A., Erastova L. K., Shapovalova A. I., 1989, Soobshcheniya Spetsial’noj Astrofizicheskoj Observatorii, 62, 5
McQuade K., Calzetti D., Kinney A. L., 1995, ApJS, 97, 331
Melbourne J., Phillips A. C., Harker J., Novak G., Koo D. C., Faber S. M., 2007, ApJ, 660, 81
Melnick J., Moles M., Terlevich R., García Pelayo J., 1987, MNRAS, 226, 849
Meurer G. R., Heckman T. M., Calzetti D., 1999, ApJ, 521, 64
Mulder P. S., van Driel W., 1996, A&A, 309, 403
Noeske K. G., Koo D. C., Phillips A. C., Willmer C. N. A., Melbourne J., Gil de Paz A., Papaderos P., 2006, ApJ, 640, L143
Osterbrock D. E., 1989, Astrophysics of Gaseous Nebulae and Active Galactic Nuclei. Research supported by the University of California, John Simon Guggenheim Memorial Foundation, University of Minnesota. University Science Books, Mill Valley, CA, p. 422
Pagel B. E. J., Edmunds M. G., Blackwell D. E., Chun M. S., Smith G., 1979, MNRAS, 189, 95
Pagel B. E. J., Simonson E. A., Terlevich R. J., Edmunds M. G., 1992, MNRAS, 255, 325
Pasquali A., Castangia P., 2008, MNRAS, 385, 468
Pérez Gallego J. et al., 2010, MNRAS, 402, 1397 (PG10)
Pérez González P. G., Zamorano J., Gallego J., Gil de Paz A., 2000, A&AS, 141, 409
Perez González P. G., Zamorano J., Gallego J., Aragón Salamanca A., Gil de Paz A., 2003, ApJ, 591, 827
Phillips A. C., Guzmán R., Gallego J., Koo D. C., Lowenthal J. D., Vogt N. P., Faber S. M., Illingworth G. D., 1997, ApJ, 489, 543
Pisano D. J., Kobulnicky H. A., Guzmán R., Gallego J., Bershady M. A., 2001, AJ, 122, 1194
Puech M., Hammer F., Flores H., Östlin G., Marquart T., 2006, A&A, 455, 119
Richer M. G., McCall M. L., 1995, ApJ, 445, 642
Rickes M. G., Pastoriza M. G., Bonatto C., 2008, MNRAS, 384, 1427
Salzer J. J., Williams A. L., Gronwall C., 2009, ApJ, 695, L67
Sánchez S. F., 2004, Astron. Nachr., 325, 167
Sánchez S. F., 2006, Astron. Nachr., 327, 850
Sanders D. B., Mirabel I. F., 1996, ARA&A, 34, 749
Schlegel D. J., Finkbeiner D. P., Davis M., 1998, ApJ, 500, 525
Schmitt H. R., Calzetti D., Armus L., Giavalisco M., Heckman T. M., Kennicutt R. C., Jr, Leitherer C., Meurer G. R., 2006, ApJ, 643, 173
Schweizer F., 1987, in Faber S. M., ed., Nearly Normal Galaxies: From the Planck Time to the Present. New York, Springer-Verlag, p. 18
Shlosman I., Begelman M. C., Frank J., 1990, Nat, 345, 679
Smith J. D. T. et al., 2007, PASP, 119, 1133
Stasińska G., 1990, A&AS, 83, 501
Steidel C. C., Giavalisco M., Pettini M., Dickinson M., Adelberger K. L., 1996, ApJ, 462, L17
Steidel C. C., Adelberger K. L., Shapley A. E., Pettini M., Dickinson M., Giavalisco M., 2003, ApJ, 592, 728
Storchi-Bergmann T., Calzetti D., Kinney A. L., 1994, ApJ, 429, 572
Weedman D. W., 1983, ApJ, 266, 479
Weedman D. W., Houck J. R., 2009, ApJ, 693, 370
Werk J. K., Jangren A., Salzer J. J., 2004, ApJ, 617, 1004
Werner M. W., Roellig T. L., Low F. J., Rieke G. H., Rieke M., Hoffmann W. F., Young E., Houck J. R., 2004, ApJS, 154, 1
Zamorano J., Rego M., Gallego J., Vitores A. G., González Riestra R., Rodríguez Caderot G., 1994, ApJS, 95, 387
Abstract
Physical properties of the star-forming regions in the local Luminous Compact Blue Galaxy (LCBG) NGC 7673 are studied in detail using 3D spectroscopic data taken with the PMAS fibre pack (PPAK) integral field unit at the 3.5-m telescope in the Centro Astronomico Hispano Aleman (CAHA). We derive integrated and spatially resolved properties such as extinction, star formation rate (SFR) and metallicity for this galaxy. Our data show an extinction map with maximum values located at the position of the main clumps of star formation showing small spatial variations [E(B - V)(t) = 0.12-0.21 mag]. We derive an H alpha-based SFR for this galaxy of 6.2 +/- 0.8M(circle dot) yr(-1) in agreement with the SFR derived from infrared and radio continuum fluxes. The star formation is located mainly in clumps A, B, C and F. Different properties measured in clump B make this region peculiar. We find the highest H alpha luminosity with an SFR surface density of 0.5 M-circle dot yr(-1) kpc(-2) in this clump. In our previous work, the kinematic analysis for this galaxy shows an asymmetrical ionized gas velocity field with a kinematic decoupled component located at the position of clump B. This region shows the absence of strong absorption features and the presence of a Wolf-Rayet stellar population indicating that this is a young burst of massive stars. Furthermore, we estimate a gas metallicity of 12 + log(O/H) = 8.20 +/- 0.15 (0.32 solar) for the integrated galaxy using the R23 index. The values derived for the different clumps with this method show small metallicity variations in this galaxy, with values in the range 8.12 (for clump A) to 8.23 (for clump B) for 12 + log(O/H). The analysis of the emission-line ratios discards the presence of any active galactic nuclei (AGN) activity or shocks as the ionization source in this galaxy. Between the possible mechanisms to explain the starburst activity in this galaxy, our 3D spectroscopic data support the scenario of an on-going interaction with the possibility for clump B to be the dwarf satellite galaxy.
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This article has been accepted for publication in Monthly notices of the Royal Astronomical Society. © 2010 The Authors © 2010 RAS. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. We are grateful to the anonymous referee for his valuable comments which have led to an improvement in this paper. We acknowledge support from the Spanish Programa Nacional de Astronomía y Astrofísica under grants AYA2006-02358 and AYA2006-15698-C02-02. This work is partially funded by the Spanish MICINN under the Consolider-Ingenio 2010 Program grant CSD2006-00070: First Science with the GTC. ACM acknowledges support from the Juan de la Cierva Program financed by the Spanish MICINN. JPG acknowledges support from a University of Florida Alumni Fellowship and RG from NASA Grant LTSA NA65-11635. SFS thanks the sub-programs of Viabilidad, Diseño, Acceso y Mejora de ICTS ICTS-2009-10 and the PAI Proyecto de Excelencia P08-FWM-04319 and the funds of the PAI research group FQM360. SFS thanks the Spanish Plan Nacional de Astronomía program AYA2005-09413-C02-02.