stars: pre-main-sequence; open clusters and associations: general; open clusters and associations: individual: NGC 3293
Abstract :
[en] The young open cluster NGC3293 is included in the observing program of the Gaia-ESO survey (GES). The radial velocity values provided have been used to assign cluster membership probabilities by means of a single-variable parametric analysis. These membership probabilities are compared to the results of the photometric membership assignment of NGC3293, based on UBVRI photometry. The agreement of the photometric and kinematic member samples amounts to 65 per cent, and could increase to 70 per cent as suggested by the analysis of the differences between both samples. A number of photometric PMS candidate members of spectral type F are found, which are confirmed by the results from VPHAS photometry and SED fitting for the stars in common with VPHAS and GES data sets. Excesses at mid- and near-infrared wavelengths, and signs of Hα emission, are investigated for them. Marginal presence of Hα emission or infilling is detected for the candidate members. Several of them exhibit moderate signs of U excess and weak excesses at mid-IR wavelengths. We suggest that these features originate from accretion discs in their last stages of evolution.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Delgado, A. J.; Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, E-18008 Granada, Spain
Sampedro, L.; Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, E-18008 Granada, Spain
Alfaro, E. J.; Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, E-18008 Granada, Spain
Costado, M. T.; Instituto de Astrofísica de Andalucía (IAA-CSIC), Glorieta de la Astronomía, E-18008 Granada, Spain
Yun, J. L.; Instituto de Astrofísica e Ciências do Espaço, Universidade de Lisboa, OAL, Tapada da Ajuda, PT1349-018 Lisboa, Portugal ; Departament d'Astronomia i Meteorologia, Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona (IEEC-UB), Martí i Franquès 1. E-08028 Barcelona, Spain
Frasca, A.; INAF-Osservatorio Astrofisico di Catania, via S. Sofia 78, I-95123 Catania, Italy
Lanzafame, A. C.; INAF-Osservatorio Astrofisico di Catania, via S. Sofia 78, I-95123 Catania, Italy ; Università di Catania, Dipartimento di Fisica e Astronomia, Sezione Astrofisica, via S. Sofia 78, I-95123 Catania, Italy
Drew, J. E.; School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, United Kingdom
Blomme, R.; Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, Belgium
Morel, Thierry ; Université de Liège > Groupe d'astrophysique des hautes énergies (GAPHE)
Lobel, A.; Royal Observatory of Belgium, Ringlaan 3, B-1180 Brussels, Belgium
Semaan, T.; Université de Liège, Institut d'Astrophysique et de Géophysique, Allée du 6 Août, 17, B-4000 Liège 1, Belgium ; Geneva Observatory, University of Geneva, Maillettes 51, CH-1290 Sauverny, Switzerland
Randich, S.; INAF - Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Florence, Italy
Jeffries, R. D.; Astrophysics Group, Keele University, Keele, Staffordshire ST5 5BG, United Kingdom
Micela, G.; INAF - Osservatorio Astronomico di Palermo, Piazza del Parlamento 1, I-90134 Palermo, Italy
Andrews S.M., Rosenfeld K. A., Kraus A. L., Wilner D. J., 2013, ApJ, 771, 129
Balona L. A., 1994, MNRAS, 267, 1060 (B94)
Baume G., Vazquez R. A., Carraro G., Feinstein A., 2003, A&A, 402, 549 (B03)
Bell C. P. M., Rees J. M., Naylor T., Mayne N. J., Jeffries R. D., Mamajek E. E., Rowe J., 2014, MNRAS, 3496, 3511
Cabrera-Caño J., Alfaro E. J., 1985, A&A, 150, 298
Cameron L. M., 1985, A&A, 146, 59
Cantat-Gaudin T. et al., 2014, A&A, 569, 17
Carmona A. et al., 2014, A&A, 567, 51
Chené A. N. et al., 2012, A&A, 545, 54
Churchwell E. et al., 2009, PASP, 121, 213
Cottaar M., Hénault-Brunet V., 2014, A&A, 562, 20
Crawford D. L., 1975, AJ, 80, 955
deWinter D., Koulis C., The P. S., van den Ancker M. E., Perez M. R., Bibo E. A., 1997, A&AS, 121, 223
Dekker H., D'Odorico S., Kaufer A., Delabre B., Kotzlowski H., 2000, in Iye M., Moorwood A. F., eds, Proc. SPIE Conf. Ser. Vol. 4008, Optical and IR Telescope Instrumentation and Detectors. SPIE, Bellingham, p. 534
Delgado A. J., Alfaro E. J., Moitinho A., Franco J., 1998, AJ, 116, 1801
Delgado A. J., Alfaro E. J., Yun J. L., 2007, A&A, 467, 1397 (DAYI)
Delgado A. J., Alfaro E. J., Yun J. L., 2011, A&A, 531, 141 (DAYII)
Delgado A. J., Djupvik A. A., Costado M. T., Alfaro E. J., 2013, MNRAS, 435, 429
Dufton P. L. et al., 2006, A&A, 457, 265 (D06)
Drew J. et al., 2014, MNRAS, 440, 2036
Espaillat C. et al., 2014, in Beuther H., Klessen R. S., Dullemond C. P., Henning T., eds, Protostars and Planets VI. Univ. Arizona Press, Tucson, AZ, p. 49
Feinstein A., Marraco H. G., 1980, PASP, 92, 266
Frasca A. et al., 2015, A&A, 575, 4
Geller A. M., Mathieu R. D., Braden E. K., Meibom S., Platais I., Dolan C. J., 2010, AJ, 139, 1383
Geller A. M., Latham D. W., Mathieu R. D., 2015, AJ, 150, 97
Gilmore G. et al., 2012, The Messenger, 147, 25
Guiglion G. et al., 2015, A&A, 583, 91
Gutermuth R. A., Megeath S. T., Myers P. C., Allen L. E., Pipher J. L., Fazio G. G., 2009, ApJS, 184, 18
