Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/8067
Title: Investigation of rocket effect in bright-rimmed clouds using Gaia EDR3
Authors: Saha, Piyali
Maheswar, G
Ojha, D. K
Baug, Tapas
Neha, Sharma
Keywords: Proper motions
Stars: distances
ISM: clouds
Issue Date: Sep-2022
Publisher: Oxford University Press on behalf of Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 515, No. 1, pp. L67–L7136
Abstract: Bright-rimmed clouds (BRCs) are excellent laboratories to explore the radiation-driven implosion mode of star formation because they show evidence of triggered star formation. In our previous study, BRC 18 has been found to accelerate away from the direction of the ionizing H II region because of the well-known ‘Rocket Effect’. Based on the assumption that both BRC 18 and the candidate young stellar objects (YSOs) are kinematically coupled and using the latest Gaia EDR3 measurements, we found that the relative proper motions of the candidate YSOs exhibit a tendency of moving away from the ionizing source. Using BRC 18 as a prototype, we made our further analysis for 21 more BRCs, a majority of which showed a similar trend. For most of the BRCs, the median angle of the relative proper motion of the candidate YSOs is similar to the angle of on-sky direction from the ionizing source to the central IRAS source of the BRC. Based on the Pearson’s and Spearman’s correlation coefficients, we found a strong correlation between these two angles, which is further supported by the Kolmogorov–Smirnov (K−S) test on them. The strong correlation between these two angles supports the ‘Rocket Effect’ in the BRCs on the sky plane.
Description: Restricted Access
URI: http://hdl.handle.net/2248/8067
ISSN: 1745-3933
Appears in Collections:IIAP Publications

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