Tomasz Nowakowski is a writer for the website Phys.org.
The central portion of NGC 1893 was constructed using a combination of blue, 4K4K, and I-band images. Panwar et al., 2021.
Astronomers have observed a young star cluster using the Devasthal Optical Telescope. The researchers were able to investigate hundreds of young low-mass stars in the cluster, resulting in the detection of over 100 new objects. The paper detailing the study was published on arXiv.org.
Young stars are formed from the same cloud in star clusters. Massive stars in such systems may have an influence on the evolution of low-mass stars. When stars in clusters form, they tend to ionize the cloud and create an area of hydrogen called the HII region. This expanding HII region interacts with the surrounding cloud and may initiate star formation via various processes.
Young star clusters associated with HII regions are thought to be excellent sites to study the influence of massive stars on the formation and evolution of low-mass stars. The various processes involved in triggering star formation could be revealed by these clusters.
A group of researchers, led by Neelam Panwar of the ARIES in India, inspected a young star cluster that is associated with the HII region. There are five O-type stars and several B-type stars at a distance of about 10,500 light years away from the Earth. Most of the studies of this cluster were shallow and only completed one solar mass. Panwar's team wanted to conduct deep photometric observations.
We used the 4K4K IMAGER mounted on the 3.6-m Devasthal Optical Telescope to observe the low-mass stars in the cluster region. The analysis shows that the present optical data are deeper than the previous studies.
The stars in NGC 1893 were revealed by the deep data from DOT. The DOT data allowed the team to identify more than 400 young stars in the central portion of the cluster.
Most of the identified objects are low-mass stars with ages below 10 million years. The results suggest that there is a small contribution of the field stars in the PMS zone to the cluster.
The slope of the mass function in the range between 0.2 and 2.5 solar mass was -1.43. The result is consistent with values obtained for other star-forming complexes. According to the authors of the paper, the mass distribution of the young stars in the study indicates that most of them are massive.
The young star cluster NGC 1893 has a 3.6m DOT.
The Science X Network will be launched in 2021.
The study found over 100 new stars in the young low-mass stellar population of NGC 1893.
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