The current star-formation rate of the local universe

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dc.contributor.authorGallego Maestro, Jesús
dc.contributor.authorZamorano Calvo, Jaime
dc.contributor.authorAragón Salamanca, A.
dc.contributor.authorRego Fernández, Manuel
dc.date.accessioned2023-06-20T20:12:03Z
dc.date.available2023-06-20T20:12:03Z
dc.date.issued1995-12-10
dc.description© 1995. The American Astronomical Society. We thank S. White, A. G. Vitores, O. Alonso, J. Gorgas, and N. Cardiel for their many valuable comments. This work was supported in part by the Spanish Programa Sectorial de Promoción del Conocimiento under grant PB93-456. A. A. S. acknowledges generous financial support from the Royal Society.
dc.description.abstractThe Universidad Complutense de Madrid (UCM) survey is a long-term project aimed at finding and analyzing star-forming galaxies detected by their Hα emission in Schmidt objective-prism plates. The instrumental setup limits the volume of the universe surveyed to a redshift z ≲ 0.045. So far we have discovered several hundred emission-line galaxies (ELGs) undergoing star formation at a wide range of levels. Analyzing a complete sample of ELGs from the UCM survey, we have computed the Hα luminosity function for the star-forming galaxies in the surveyed volume of the universe. A Schechter function provides a good fit to the H_α luminosity function with the following parameters: α = -1.3 ± 0.2, L^*(H_α) = 10^42.15±0.08 ergs s^-1, and φ^* = 10^-3.2±0.2 Mpc^3 for H_0 = 50 km s^-1 Mpc^-1. Integrating over the full range of luminosities, we obtain an H_α luminosity density of 10^39.1±0.2 ergs s^-1 Mpc^-3. Using the H_α emission as a star formation rate (SFR) estimator, this translates into a SFR density for the local universe of 0.013_−0.005^+0.007 M_☉ yr^-1 Mpc^-3 in star-forming galaxies with EW(H_α + [N_II]) > 10 Å and z lesssim 0.045 for a Scalo initial mass function. This is the first observational determination of this quantity, which will provide a direct test of current galaxy formation and evolution models.
dc.description.departmentDepto. de Física de la Tierra y Astrofísica
dc.description.facultyFac. de Ciencias Físicas
dc.description.refereedTRUE
dc.description.sponsorshipPrograma Sectorial de Promoción del Conocimiento (MEC), España
dc.description.sponsorshipRoyal Society
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/34379
dc.identifier.citationAragón Salamanca, A. 1995, in ASP Conf. Ser., Fresh Views on Elliptical Galaxies, ed. A. Buzzoni, A. Renzini, & A. Serrano (San Francisco: ASP), in press Boroson, T. A., Salzer, J. J., & Trotter, A. 1993, ApJ, 412, 524 Broadhurst, T. J., Ellis, R. S., & Glazebrook, K. 1992, Nature, 355, 55 Bruzual, G., & Charlot, S. 1993, ApJ, 405, 538 Cole, S., Aragón Salamanca, A., Frenk, C. S., Navarro, J., & Zepf, E. 1994, MNRAS, 271, 781 Colless, M. 1995, in Wide Field Spectroscopy and the Distant Universe, ed. S. Maddox & A. Aragón Salamanca (Singapore: World Scientific), 263 Ellis, R. S., Colless, M., Broadhurst, T. J., Heyl, J., & Glazebrook, K. 1995, MNRAS, submitted Gallagher, J. S., Bushouse, H., & Hunter, D. A. 1989, AJ, 97, 700 Gallagher, J. S., & Gibson, S. J. 1993, in Panchromatic View of Galaxies, ed. G. Hensler, C. Theis, & J. S. Gallagher (Gif-sur-Yvette: Editions Frontières), 207 Gallego, J. 1995, PASP, 107, 708 Gallego, J., Zamorano, J., Rego, M., Alonso, O., & Vitores, A. G. 1995a, A&AS, in press Gallego, J., Zamorano, J., Rego, M., & Vitores, A. G. 1995b, ApJ, submitted Huchra, J. P., & Sargent, W. L. W. 1973, ApJ, 186, 433 Kauffmann, G., White, S. D. M., & Guiderdoni, B. 1993, MNRAS, 264, 201 Kennicutt, R. C. 1983, ApJ, 272, 54 ———. 1992, ApJ, 388, 310 Koo, D. C., & Kron, R. G. 1992, ARA&A, 30, 613 Lilly, S. J., Tresse, L., Hammer, F., Crampton, D., & Le Fevre, O. 1995, ApJ, 455, 108 Mobasher, B., Sharples, R. M., & Ellis, R. S. 1993, MNRAS, 263, 560 Rego, M., Cordero, M., Zamorano, J., & Gallego, J. 1993, AJ, 105, 427 Rego, M., Zamorano, J., & González Riestra, R. 1989, A&AS, 79, 443 Salzer, J. J. 1989, ApJ, 347, 152 Scalo, J. M. 1986, Fundam. Cosmic Phys., 11, 1 Schechter, P. 1976, ApJ, 203, 297 Schmidt, M. 1968, ApJ, 151, 393 Songaila, A., Cowie, L. L., Hu, E. M., & Gardner, J. P. 1994, ApJS, 94, 461 Vitores, A. G. 1995, PASP, 107, 404 Vitores, A. G., Zamorano, J., Rego, M., Alonso, O., & Gallego, J. 1995a, A&AS, submitted ———. 1995b, A&A, submitted Zamorano, J., Gallego, J., Rego, M., Vitores, A. G., & Alonso, O. 1995, ApJS, submitted Zamorano, J., Gallego, J., Rego, M., Vitores, A. G., González Riestra, R., & Rodríguez Caderot, G. 1994, ApJS, 95, 387 Zamorano, J., Rego, M., Gallego, J., Vitores, A. G., & González Riestra, R. 1992, AJ, 104, 1000 Zamorano, J., Rego, M., González Riestra, R., & Rodríguez, G. 1990, A&AS, 170, 353
dc.identifier.doi10.1086/309804
dc.identifier.issn0004-637X
dc.identifier.officialurlhttp://dx.doi.org/10.1086/309804
dc.identifier.relatedurlhttp://iopscience.iop.org/
dc.identifier.urihttps://hdl.handle.net/20.500.14352/59816
dc.issue.number1
dc.journal.titleAstrophysical journal
dc.language.isoeng
dc.page.finalL4
dc.page.initialL1
dc.publisherAmerican Astronomical Society
dc.relation.projectIDPB93-456
dc.rights.accessRightsopen access
dc.subject.cdu52
dc.subject.keywordEmission-line galaxies
dc.subject.keywordEvolution
dc.subject.ucmAstrofísica
dc.subject.ucmAstronomía (Física)
dc.titleThe current star-formation rate of the local universe
dc.typejournal article
dc.volume.number455
dspace.entity.typePublication
relation.isAuthorOfPublication303794a4-e4bf-4262-9a94-11bc46167d8e
relation.isAuthorOfPublication949589a4-3398-4ac6-805c-5dcf70d066f2
relation.isAuthorOfPublication.latestForDiscovery303794a4-e4bf-4262-9a94-11bc46167d8e
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