A Wide-Field Narrowband Optical Survey of the Braid Nebula Star Formation Region in Cygnus Ob7

A wide-field near-infrared H22.122μm line survey of the Braid Nebula star formation region in Cygnus OB7

“…Some of the candidates were already suggested as being young and active, based on their proximity to HH objects (Devine et al 1997;Magakian et al 2010) and their observed spectra (Aspin et al 2009). In this study, armed with the locations of newly-identified nearinfrared MHOs, in conjunction with the positions of recentlyreported HH objects (Magakian et al 2010) and CSO 1.1 mm cores (Aspin et al 2011), we are likewise able to associate young stars with the outflows they power. Figure 2 shows one example, where we confirm the 7 pc bipolar outflow recently reported by Magakian et al (2010) and are able to suggest an extension to this flow (MHO 900 and 904), making it over 10 pc long and one of the most significant outflows detected in the current region.…”

“…The fact that this outflow is powered by an FU Ori type eruptive variable star (Aspin et al 2009;Kazarovets et al 2011) highlights the importance of this find. Figure 2 also shows the importance of using multi-waveband data; in this case, by using IRAS 25 µm band data we are able to identify the source of the HH 965 optical outflow (Magakian et al 2010). 2.…”

“…In this panel the grey-scale contours mark the CSO 1.1 mm data with values 40, 60, 80, 100, 140 and 180 mJy; the hashed numbers label the designated CSO cores from Aspin et al (2011); the dashed-line circle shows the approximate extent of the IRAS HiRes 25 µm cores; the dashed-line and solid-line arrows show the suspected and confirmed outflows, respectively. The bottomleft panel shows a magnified view of V2494 Cyg in Hα (Magakian et al 2010) in which the HH 381jet can be seen.…”

“…In our analysis of the Braid Nebula region we compared nearinfrared H 2 1−0 S(1) line data with optical Hα, [SII] and CSO 1.1 mm observations that were presented and thoroughly described in Magakian et al (2010) and Aspin et al (2011) Movsessian et al (2003). In the online version, the left panel shows a colour composite view constructed from DSS 2 Blue (blue), DSS 2 Red (green) and DSS 2 Infrared (red) images.…”

“…Next we presented a wide-field narrowband optical survey of the region (Magakian et al 2010), where we reported the discovery of 25 more HH objects and 12 individual outflows. The unbiased nature of the survey also enabled us to detect many reflection nebulae.…”