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J/MNRAS/379/1237 VIcJHK photometry of NGC 1893 Halpha sources (Maheswar+, 2007)
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table1.dat
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Beginning of ReadMe :J/MNRAS/379/1237 VIcJHK photometry of NGC 1893 Halpha sources (Maheswar+, 2007)
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Champagne flow and triggered star formation in NGC 1893.
Maheswar G., Sharma S., Biman J.M., Pandey A.K., Bhatt H.C.
<Mon. Not. R. Astron. Soc., 379, 1237-1247 (2007)>
=2007MNRAS.379.1237M
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ADC_Keywords: H II regions ; Photometry, infrared
Keywords: stars: formation - stars: pre-main-sequence - ISM: globules -
HII regions
Abstract:
Using Halpha grism spectroscopy and optical and Two-Micron All-Sky
Survey photometry of the fields containing NGC 1893 and two emission
nebulae, Sim 129 and Sim 130, we show the presence of a number of
Halpha and near-infrared excess sources towards the region between
HD 242935 and the two emission nebulae. Among them a large majority of
these pre-main-sequence candidate sources are concentrated towards
regions closer to Sim 129 and Sim 130.
Description:
The optical CCD UBV(RI)c photometry of the field containing NGC 1893
was carried out to study the cluster properties (like distance, age,
extinction, reddening law, etc., Paper II, Saurabh et al., in prep.).
The data were obtained on 2005 January 6 using the 2048x2048 pixel CCD
camera mounted on the f/13 Cassegrain focus of the 104-cm Sampurnanand
telescope of ARIES, Nainital. An Halpha emission survey of the field
containing Sim 129, Sim 130 was conducted on 2005 January 25 using
Hanle Faint Object Spectrograph Camera (HFOSC) at the f/9 Cassegrain
focus of Himalayan Chandra Telescope (HCT) at Hanle, India. The NIR
JHKs magnitudes of the stars within a circle of radius 30' about
IRAS 05198+3325 were obtained from 2MASS catalogue (Cutri et al.,
2003, Cat. II/246).