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Ansdell, M.; Gaidos, E.; Mann, A.W.; Lépine, S.; James, D.; Buccino, A.; Baranec, C.; Law, N.M.; Riddle, R.; Mauas, P.; Petrucci, R. "The near-ultraviolet luminosity function of young, early M-type dwarf stars" (2015) Astrophysical Journal. 798(1)
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Abstract:

Planets orbiting within the close-in habitable zones of M dwarf stars will be exposed to elevated high-energy radiation driven by strong magnetohydrodynamic dynamos during stellar youth. Near-ultraviolet (NUV) irradiation can erode and alter the chemistry of planetary atmospheres, and a quantitative description of the evolution of NUV emission from M dwarfs is needed when modeling these effects. We investigated the NUV luminosity evolution of early M-type dwarfs by cross-correlating the Lépine & Gaidos catalog of bright M dwarfs with the Galaxy Evolution Explorer (GALEX) catalog of NUV (1771-2831 A˚) sources. Of the 4805 sources with GALEX counterparts, 797 have NUV emission significantly (>2.5σ) in excess of an empirical basal level. We inspected these candidate active stars using visible-wavelength spectra, high-resolution adaptive optics imaging, time-series photometry, and literature searches to identify cases where the elevated NUV emission is due to unresolved background sources or stellar companions; we estimated the overall occurrence of these "false positives" (FPs) as ∼16%. We constructed an NUV luminosity function that accounted for FPs, detection biases of the source catalogs, and GALEX upper limits. We found the NUV luminosity function to be inconsistent with predictions from a constant star-formation rate and simplified age-activity relation defined by a two-parameter power law. © 2015. The American Astronomical Society. All rights reserved.

Registro:

Documento: Artículo
Título:The near-ultraviolet luminosity function of young, early M-type dwarf stars
Autor:Ansdell, M.; Gaidos, E.; Mann, A.W.; Lépine, S.; James, D.; Buccino, A.; Baranec, C.; Law, N.M.; Riddle, R.; Mauas, P.; Petrucci, R.
Filiación:Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, United States
Department of Geology and Geophysics, University of Hawaii, HonoluluHI 96822, United States
Department of Astronomy, University of Texas at Austin, Austin, TX 78712, United States
Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30302, United States
Department of Astrophysics, American Museum of Natural History, New York, NY 10024, United States
Cerro Tololo Inter-American Observatory, Casilla, la Serena, 603, Chile
Instituto de Astronomía y Física del Espacio, Buenos Aires, C1428EHA, Argentina
Departamento de Física, FCEN-Universidad de Buenos Aires, Buenos Aires, Argentina
Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, United States
Palabras clave:Binaries: Close; Stars: Activity; Stars: Late-type; Stars: Luminosity function, mass function
Año:2015
Volumen:798
Número:1
DOI: http://dx.doi.org/10.1088/0004-637X/798/1/41
Título revista:Astrophysical Journal
Título revista abreviado:Astrophys. J.
ISSN:0004637X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004637X_v798_n1_p_Ansdell

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Citas:

---------- APA ----------
Ansdell, M., Gaidos, E., Mann, A.W., Lépine, S., James, D., Buccino, A., Baranec, C.,..., Petrucci, R. (2015) . The near-ultraviolet luminosity function of young, early M-type dwarf stars. Astrophysical Journal, 798(1).
http://dx.doi.org/10.1088/0004-637X/798/1/41
---------- CHICAGO ----------
Ansdell, M., Gaidos, E., Mann, A.W., Lépine, S., James, D., Buccino, A., et al. "The near-ultraviolet luminosity function of young, early M-type dwarf stars" . Astrophysical Journal 798, no. 1 (2015).
http://dx.doi.org/10.1088/0004-637X/798/1/41
---------- MLA ----------
Ansdell, M., Gaidos, E., Mann, A.W., Lépine, S., James, D., Buccino, A., et al. "The near-ultraviolet luminosity function of young, early M-type dwarf stars" . Astrophysical Journal, vol. 798, no. 1, 2015.
http://dx.doi.org/10.1088/0004-637X/798/1/41
---------- VANCOUVER ----------
Ansdell, M., Gaidos, E., Mann, A.W., Lépine, S., James, D., Buccino, A., et al. The near-ultraviolet luminosity function of young, early M-type dwarf stars. Astrophys. J. 2015;798(1).
http://dx.doi.org/10.1088/0004-637X/798/1/41