首页|Multiwavelength Observations of the Infrared Dust Bubble N75 and its Surroundings
Multiwavelength Observations of the Infrared Dust Bubble N75 and its Surroundings
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Infrared dust bubbles play an important role in the study of star formation and the evolution of the interstellar medium.In this work,we study the infrared dust bubble N75 and the infrared dark cloud G38.93 mainly using the tracers C18O,HCO+,HNC and N2H+observed by the 30 m IRAM telescope.We also study the targets using data from large-scale surveys:GLIMPSE,MIPSGAL,GRS,NRAO VLA Sky Survey and Bolocam Galactic Plane Survey.We found that the C18O emission is morphologically similar to the Spitzer IRAC 8.0 μm emission.The 1.1 mm cold dust emission of G38.93 shows an elongated structure from southwest to northeast.The ionized gas from G38.93 is surrounded by polycyclic aromatic hydrocarbon emission,which may be excited by radiation from G38.93.We found that the identified young stellar objects tend to cluster around G38.93 and are mostly in class Ⅱ,with several class I cases distributed around N75,but no class Ⅱ examples.We also found evidence of expanding feedback,which could have triggered star formation.
ISM:bubblesinfrared:ISMgalaxies:star formation
Quan-Ling Cui、Chuan-Peng Zhang、Jun-Jie Wang
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National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China
University of Chinese Academy of Sciences,Beijing 100049,China
College of Science,Qiqihar University,Qiqihar 161006,China
Guizhou Radio Astronomical Observatory,Guizhou University,Guiyang 550000,China
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National Key R&D Program of Chinalocal Science and Technology innovation projects of the central governmentNational Natural Science Foundation of China
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