Image Details
Caption: Figure 1.
Bipolar jets ejected from KX And in Hα light without continuum. The upper left inset was calculated from the Hα data of DR0.1 of the Northern Sky Narrowband Survey (NSNS), in which the jets were found. In that picture, the jets are close to the detection limit. The main image was captured with a 40 cm instrument and a total exposure time of 16.8 hr. The lower right inset indicates the regions for the intensity measurements in Section 2.2. See Appendix for detailed image data. The high-resolution main image reveals fine details and shows two jets with an apparent length of about 20′, with the northern jet ending in a bright tip. This structure appears to be the outer end of a cigar-shaped shell, likely formed by the interaction of the ejected gas with interstellar matter. There is a diffuse structure in the southern jet, about 7′ from KX And, denoted as “S2” in the lower left inset. Both jets begin (becoming visible) at an apparent distance of about ﹩1\mathop{.}\limits^{{\prime} }8﹩ and the turbulent structure of the jets indicates a varying ejection rate. The bright point source in the main picture is KX And, which remains visible as a result of precise continuum subtraction because the brighter companion of this binary system is an emission-line star (see Section 2.1 for details). In contrast, in the upper left inset, KX And (marked by a blue circle) is eliminated due to inaccurate continuum subtraction with star extraction from Hα data (since it has the highest resolution in DR0.1 of the NSNS, see the section “Data acquisition and processing” in S. Ziegenbalg 2024).
© 2024. The Author(s). Published by the American Astronomical Society.