Stephan's Quintet

Science

Low-impact change.

Impact 39.0 · Hidden · Confidence 75

• Newly added color information for NGC 7319 (B−R = 1.62) and HI/ionized gas structures refine the group's composition.

Add: young group and dominated by matter that isn't emitting light Dark matter NGC 7319 has a Blue minus Red B R of 1 62 Add: HI integrated flux of 5 9 0 3 Jy km s ¹ Spectral line observations of Stephen Quintet has confirmed four Neutral atomic hydrogen HI clouds and revealed the HI features are located on the tidal tails that extend eastwards There are two HI clumps are found to have peak emission luminous infrared and bright Hα sources. Add: AGN dominated radio source HCG 92D is also detected but is weak At 1 4 GHz the radio continuum emission in Stephen Quintet is dominated by the radio filament 48 7 mJy L 3 6 W Hz ¹ and NGC 7319 27 4 mJy L 2 1 W Hz ¹ The total radio flux of Stephen Quintet is 96 15 mJy NGC 7318A and the foreground galaxy NGC 7320 is detected weakly 1 4 0 2 mJy and 0 4 0 1 mJy respectively while NGC 7317 and NGC 7320C are undetected.

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