Near-infrared and ISOCAM observations of the Chamaeleon II dark cloud (Articolo in rivista)

Type
Label
  • Near-infrared and ISOCAM observations of the Chamaeleon II dark cloud (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Persi, P.; Marenzi, A. R.; Gómez, M.; Olofsson, G. (2003)
    Near-infrared and ISOCAM observations of the Chamaeleon II dark cloud
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Persi, P.; Marenzi, A. R.; Gómez, M.; Olofsson, G. (literal)
Pagina inizio
  • 995 (literal)
Pagina fine
  • 1002 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 399 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Near-infrared and ISOCAM observations of the Chamaeleon II dark cloud (literal)
Abstract
  • An infrared study including ISOCAM images at 6.75 and 14.3 mu m of a large portion (28 arcmin x 26 arcmin) of the Chamaeleon II dark cloud and sub-arcsec resolution JHKs images of the central (4.9 arcmin x 4.9 arcmin) area is presented. Combining the ISOCAM observations with J and Ks photometry obtained with DENIS, we have found 12 young stars, of which 8 are previously identified sources. Of the new candidate YSOs, ISO-ChaII13 shows a clear mid-IR excess with an infrared luminosity of ~ 0.02 Lsun and a stellar luminosity >=0.01 Lsun. This last value of luminosity corresponds to that expected for a sub-stellar object with an age between 1-10 Myr. The analysis of the J-H/H-K diagram of the sources detected in the central part of the dark cloud has allowed us to identify 10 very faint sources not found by ISOCAM with possible near-IR excesses that may be embedded young brown dwarfs. Finally, the center of the dark cloud is characterized by the presence of the Class I YSO IRAS 12553-7651 (ISO-ChaII28) with Lbol= 1.49 Lsun, and associated with a faint nebulosity observed at 2.2 mu m. (literal)
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