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J/A+A/567/A108 Rosette globulettes and shells in the IR (Makela+, 2014)
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table5.dat table6.dat
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Beginning of ReadMe :J/A+A/567/A108 Rosette globulettes and shells in the IR (Makela+, 2014)
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Rosette globulettes and shells in the infrared.
Makela M.M., Haikala L.K., Gahm G.F.
<Astron. Astrophys. 567, A108 (2014)>
=2014A&A...567A.108M
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ADC_Keywords: Globules ; Stars, pre-main sequence ; Photometry, infrared
Keywords: stars: formation - stars: pre-main-sequence - stars: protostars -
dust, extinction - HII regions -
ISM: individual objects: Rosette Nebula (except planetary nebulae)
Abstract:
The compressed molecular shells around the central clusters in HII
regions break up into morphologically distinct fragments due to the UV
light from the central OB stars. Tiny, dense, sub-solar mass clumps
called globulettes are one of such distinct features.
The objective of this study is to study the globulettes and the shells
in the Rosette Nebula. Their extinction, surface brightness in the
cores and rims, and density have been estimated through NIR
observations. The star-formation activity has also been studied.
The NIR JHKs photometry is used in creating visual extinction maps and
studying the density of individual globulettes.
Description:
The JHKs photometry of stars in four overlapping 5'x5' fields in the
northwestern region of the Rosette Nebula and in one 5'x5' field 10'
east of the overlapping fields are presented. The observations were
carried out with the SOFI instrument on NTT. A reddening-free
reference region, OFF, (5'x5') has also been observed.
The magnitudes have been converted to the 2MASS system and the
positional accuracy is better than 0.6". The smallest errors have been
rounded up to 0.01mag.