Near-IR imaging photometry of NGC 1333: a 3-μm imaging survey

Details Near-IR imaging photometry of NGC 1333: a 3-μm imaging survey Near-IR imaging photometry of NGC 1333: a 3-μm imaging survey

Jul 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997mnras.289....1a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 289, Issue 1, pp. 1-9.

Astronomy and Astrophysics

Astronomy

19

Circumstellar Matter, Stars: Formation, Stars: Pre-Main-Sequence, Dust, Extinction: Ism: Individual: Ngc 1333: Infrared: Stars

Scientific paper

We combine new near-infrared 3.42-μm imaging photometry with JHK data from Paper I to further probe the membership and physical characteristics of the embedded pre-main-sequence (PMS) population in the active star formation region NGC 1333-S. Our new data set covers approximately 44 per cent of the 10x10 arcmin^2 area previously surveyed. In the current survey region we have detected 36 sources, 26 being brighter than our 5sigma limiting magnitude of m_L=12.2. These 36 objects represent 45 per cent of the 80 objects detected in the same region at K. From a near-IR J-K versus K-L colour-colour diagram we infer the evolutionary state of the stars and compare the results with those obtained from our JHK data. We additionally discuss the effect of 3.08-μm ice absorption on photometry at 3.42mum for heavily embedded objects.

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