2017ApJS..231....9K

Query : 2017ApJS..231....9K

2017ApJS..231....9K - Astrophys. J., Suppl. Ser., 231, 9-9 (2017/July-0)

Star formation conditions in a Planck Galactic Cold Clump, G108.84-00.81.

KIM J., LEE J.-E., LIU T., KIM K.-T., WU Y., TATEMATSU K., LIU S.-Y. (The JCMT Large Program "SCOPE" Collaboration) (The TRAO Key Science Program "TOP" Collaboration)

Abstract (from CDS):

We present the results from a series of ground-based radio observations toward a Planck Galactic Cold Clump (PGCC), PGCC G108.84-00.81, which is located in one curved filamentary cloud in the vicinity of an extended H II region Sh2-152 and SNR G109.1-1.0. PGCC G108.84-00.81 is mainly composed of two clumps, "G108-N" and "G108-S". In the 850 µm dust continuum emission map, G108-N is shown as one component while G108-S is fragmented into four components. There is no infrared source associated with G108-N, while there are two infrared sources (IRS 1 and IRS 2) associated with G108-S. The total mass of G108-N is larger than the Jeans mass, suggesting that G108-N is gravitationally unstable and a potential place for a future star formation. The clump properties of G108-N and G108-S such as the gas temperature and the column density, are not distinctly different. However, G108-S is slightly more evolved than G108-N, if considering the CO depletion factor, molecular abundances, and association with infrared sources. G108-S seems to be affected by the compression from Sh2-152, while G108-N is relatively protected from the external effect.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: clouds - methods: observational - stars: formation - stars: formation

Nomenclature: Fig. 6: [KLL2017] G108-SN (Nos S1-S4). Table 2: [KLL2017] IRS N (Nos IRS 1-IRS 2).

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PLCKECC G192.32-11.88 cor 05 29.9 +12 17           ~ 6 0
2 NAME Ori I As* 05 38 -02.8           ~ 653 0
3 SCOPE G108.81-00.81 Y*O 22 58 34.080 +58 55 51.88           ~ 3 0
4 IRAS 22565+5839 Y*O 22 58 38.62824 +58 55 48.3024           ~ 10 0
5 [TLO2017] G108S cor 22 58 40.80 +58 55 34.4           ~ 1 0
6 SH 2-152 HII 22 58 40.8107767416 +58 46 59.226036024           ~ 147 1
7 PLCKECC G108.85-00.80 cor 22 58 48.640 +58 56 54.43           ~ 13 0
8 [TLO2017] G108N cor 22 58 56.20 +58 58 21.7           ~ 3 0
9 IRAS 22576+5843 * 22 59 44.21496 +58 59 56.9256           ~ 4 0
10 SNR G109.1-01.0 SNR 23 01 35 +58 53.0           ~ 362 0

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