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tokens: emission is integrated over a velocity range of [−12, 6] km s −1 . The axes are offsets with respect to a central position (i.e., R.A. (2000) = 5 h 52 m 129; decl. (2000) = 26°59′33′′). The positions of IRAS 05490+2658, IRAS 05488+2657, and IRAS 05483+2728 are denoted by stars (in red). We have also presented integrated intensity (moment-0) maps of 13 CO(1–0), C 18 O(1–0), and CS(2–1) emission in Figures 3 (a)–(c), respectively. The 13 CO moment-0 map is shown here only for comparison (see also Figure 2 ). The C 18 O line is a tracer of total molecular gas column density, while the CS line is known to depict denser molecular gas compared to the 13 CO data. Hence, the denser parts in the filament can be spatially examined in Figures 3 (b) and (c). The dense gas traced in the C 18 O(1–0) and CS(2–1) maps is found toward both the filament ends (i.e., the S242 H ii region and all the PGCCs). Figures 3 (d)–(f) show moment-1 (velocity field) maps of the 13 CO(1–0), C 18 O(1–0), and CS(2–1), respectively. With the help of moment-1 map, some signatures of velocity gradients are seen at both the ends of the filament (see Figure 3 (d)). Figure 3. (a) 13 CO(1–0) integrated intensity map in the direction of the site S242 (i.e., Moment-0 map). (b) Moment-0 map of C 18 O(1–0). (c) Moment-0 map of CS(2–1). (d) Moment-1 map of 13 CO. e) Moment-1 map of C 18 O. (d) Moment-1 map of CS(2–1). In all the moment-0 maps, the vertical bar shows the color-coded intensity in K km s −1 . In each moment-1 map, the vertical bar shows the color-coded velocity in km s −1 . Figures 4 and 5 display the 13 CO and CS(2–1) velocity channel maps from −1 to 5 km s −1 , respectively. Each channel map is obtained by integrating the emission over 1 km s −1 velocity intervals. These channel maps help us to examine the gas distribution in the filament for a given velocity interval. In this paper, the molecular gas in the filament is mainly studied in the velocity interval of [−1, 5] km s −1 . However, we find an additional velocity component at [−12, −6] km s −1 toward the northern part of the filament using the 13 CO line data (not shown in this paper). In this velocity range, there is no C 18 O(1–0) and CS(2–1) emission detected toward the filament. It implies that the gas at [−12, −6] km s −1 has low density. In the position–velocity (pv) plot, we find that the velocity component at [−12, −6] km s −1 is kinematically unrelated to the one at the [−1, 5] km s −1 (not shown in this paper). Furthermore, the emission at [−12, −6] km s −1 appears to be more extended to the north of the filament, which is not covered in this observational work. In order to make any further conclusion on the kinematical structure at [−12, −6] km s −1 , one needs to obtain further observations for a wide-scale area containing the north part of the filament. Figure 4. 13 CO(1–0) integrated velocity channel maps (starting from −1 km s −1 at intervals of 1 km s −1 ) in the direction of the site S242. In