Liu, X-C, Wu, Y., Zhang, C., Chen, X., Lin, L-H, Qin, S-L, Liu, T., Henkel, C., Wang, J., Liu, H-L, Yuan, J., Yuan, L-X, Li, J., Shen, Z-Q, Li, D., Esimbek, J., Wang, K., Li, L-X, Kim, Kee-Tae, Zhu, L., Madones, D., Inostroza-Pino, N., Meng, F-Y, Zhang, T., Tatematsu, K., Xu, Y., Ju, B-G, Kraus, A. and Xu, F-W (2021). A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251. Astrophys. J., 912 (2). BRISTOL: IOP Publishing Ltd. ISSN 1538-4357

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Abstract

We searched for shocked carbon chain chemistry (SCCC) sources with C3S abundances surpassing those of HC5N toward the dark cloud L1251, using the Effelsberg telescope at the K band (18-26 GHz). L1251-1 and L1251-3 are identified as the most promising SCCC sources. The two sources harbor young stellar objects. We conducted mapping observations toward L1251-A, the western tail of L1251, at lambda similar to 3 mm with the Purple Mountain Observatory 13.7 m and the Nobeyama Radio Observatory 45 m telescopes in lines of C2H, N2H+, CS, HCO+, SO, HC3N, and (CO)-O-18 as well as in CO 3-2 using the James Clerk Maxwell Telescope (JCMT). The spectral data were combined with archival data including Spitzer and Herschel continuum maps for further analysis. Filamentary substructures labeled as F1-F6 were extracted in L1251, with F1 being associated with L1251-A hosting L1251-1. The peak positions of dense gas traced by HCO+ are misaligned relative to those of the dust clumps. Episodic outflows are common in this region. The twisted morphology of F1 and velocity distribution along L1251-A may originate from stellar feedback. SCCC in L1251-1 may have been caused by outflow activities originated from the infrared source IRS1. The signposts of ongoing SCCC and the broadened line widths of C3S and C4H in L1251-1 as well as the distribution of HC3N are also related to outflow activities in this region. L1251-1 (IRS1) together with the previously identified SCCC source IRS3 demonstrate that L1251-A is an excellent region to study SCCC.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Liu, X-CUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wu, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lin, L-HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qin, S-LUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henkel, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, H-LUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yuan, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yuan, L-XUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shen, Z-QUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Esimbek, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, L-XUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, Kee-TaeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhu, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Madones, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Inostroza-Pino, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meng, F-YUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zhang, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tatematsu, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Xu, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ju, B-GUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kraus, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Xu, F-WUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-604842
DOI: 10.3847/1538-4357/abee73
Journal or Publication Title: Astrophys. J.
Volume: 912
Number: 2
Date: 2021
Publisher: IOP Publishing Ltd
Place of Publication: BRISTOL
ISSN: 1538-4357
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MASS PROTOSTAR IRAS-04368+2557; SPECTRAL ENERGY-DISTRIBUTIONS; MOLECULAR LINE OBSERVATIONS; C2D SMALL CLOUDS; STAR-FORMATION; DENSE CORES; C3H2; IDENTIFICATION; CLUSTER; TMC-1Multiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60484

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