Universität zu Köln

Ladeyschikov, D. A., Kirsanova, M. S., Sobolev, A. M., Thomasson, M., Ossenkopf-Okada, V, Juvela, M., Khaibrakhmanov, S. A. and Popova, E. A. (2021). The link between gas and stars in the S254-S258 star-forming region. Mon. Not. Roy. Astron. Soc., 506 (3). S. 4447 - 4465. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

The paper aims to study relation between the distributions of the young stellar objects (YSOs) of different ages and the gas-dust constituents of the S254-S258 star formation complex. This is necessary to study the time evolution of the YSO distribution with respect to the gas and dust compounds that are responsible for the birth of the young stars. For this purpose, we use correlation analysis between different gas, dust, and YSO tracers. We compared the large-scale CO, HCO+, near-IR extinction, and far-IR Herschel maps with the density of YSOs of the different evolutionary classes. The direct correlation analysis between these maps was used together with the wavelet-based spatial correlation analysis. This analysis reveals a much tighter correlation of the gas-dust tracers with the distribution of class I YSOs than with that of class II YSOs. We argue that class I YSOs that were initially born in the central bright cluster S255-IR (both N and S parts) during their evolution to class II stage (similar to 2 Myr) had enough time to travel through the whole S254-S258 star formation region. Given that the region contains several isolated YSO clusters, the evolutionary link between these clusters and the bright central S255-IR (N and S) cluster can be considered. Despite the complexity of the YSO cluster formation in the non-uniform medium, the clusters of class II YSOs in the S254-258 star formation region can contain objects born in the different locations of the complex.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ladeyschikov, D. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kirsanova, M. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sobolev, A. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Thomasson, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ossenkopf-Okada, V UNSPECIFIED UNSPECIFIED UNSPECIFIED Juvela, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Khaibrakhmanov, S. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Popova, E. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-592263
DOI:	10.1093/mnras/stab1821
Journal or Publication Title:	Mon. Not. Roy. Astron. Soc.
Volume:	506
Number:	3
Page Range:	S. 4447 - 4465
Date:	2021
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-2966
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTERSTELLAR H-I; PHOTOMETRIC SYSTEM; DUST CONTINUUM; EXTINCTION; ABSORPTION; CLOUDS; CORES; MAPS Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/59226