Dobashi 5006黑云中的赫比格-哈罗流和年轻恒星

Pub Date : 2023-04-12 DOI:10.1007/s10511-023-09770-6

T. A. Movsessian, T. Yu. Magakian, A. S. Rastorguev, H. R. Andreasyan

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引用次数: 0

摘要

在对孤立的Dobashi 5006黑云(l = 216°)的研究中发现了两个新的赫比格-哈罗流。7, b = -13°.9):一个确定的(HH 1179)和一个假定的，对应于红外源2MASS 06082284-0936139和2MASS 06081525-0933490。从它们的光谱能量分布来看，这些源可能是1类天体，光度分别为23 L / 阶和3.6 L / 阶。它们是可怜的星团MWSC 0739的一部分，基于盖亚DR3调查的数据，对该星团的研究使探测到可能属于该星团的17颗恒星成为可能。给出了它们的列表及其主要参数。该星团的距离估计为820 pc，星团路径上的颜色过剩为E(BP - RP)≈1.05等。所有这些恒星都是pms天体，其中大多数是光学可变的。由此得出结论，在Dobashi 5006星云中新发现的致密恒星形成带的年龄不超过几百万年，这一过程一直持续到现在。

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Herbig-Haro Flows and Young Stars in the Dobashi 5006 Dark Cloud

Two new Herbig-Haro flows were found in a study of the isolated Dobashi 5006 dark cloud (l = 216°.7, b = –13°.9): one certain (HH 1179) and one presumable, associated with the infrared sources 2MASS 06082284-0936139 and 2MASS 06081525-0933490, correspondingly. Judging from their spectral energy distributions, these sources may be Class 1 objects with luminosities of order 23 L_⨀ and 3.6 L_⨀, respectively. They are part of the poor star cluster MWSC 0739, study of which based on data from the Gaia DR3 survey has made it possible to detect 17 stars which are probably members of it. A list of them and their main parameters is given. The distance of the cluster is estimated to be 820 pc and the color excess on the path to the cluster is E(BP - RP) ≈ 1.05 mag. All of these stars are PMS-objects and most of them are optically variable. It is concluded that the newly discovered compact star-formation zone in the Dobashi 5006 cloud has an age of no more than a few million years and this process continues up to the present time.

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