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The near-infrared variable source IRAS 04000+5052 is a small, compact star forming region |
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| Authors: | Wang Jun-jie |
| Institution: | a Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, China b National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China c CAS-Peking University Beijing Joint Astrophysical Center, Beijing 100871, China d Joint Laboratory for Optical Astronomy, Chinese Academy of Sciences, Shanghai 200030, China |
| Abstract: | The near-infrared variable source, IRAS 04000+5052, was observed using the Italian 1.5 m TIRGO infrared telescope, located in the Gornergrat Observatory, Switzerland. High-resolution images were obtained in the JHK broad bands and H2 S(1) 1-0, Brγ narrow bands. Photometry and astrometry were also carried out. From the observations, it is found that IRAS source is not a single young object, but a small-sized, compact star-forming region with many young objects. Even in such a small and compact region, stars are not formed at the same time. |
| Keywords: | star formation H II region infrared source |
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