NGC 523, also known as Arp 158, from the ARP catalog is a spiral galaxy located in the constellation Andromeda. [1] It was discovered separately by William Herschel on 13 September 1784, and by Heinrich d'Arrest on 13 August 1862. d'Arrest's discovery was listed as NGC 523, while Herschel's was listed as NGC 537; the two are one and the same. [ 4 ]

NGC 523 technical data / Telescope: Newtonian (d=443mm, f=2048mm) / Location: Emberger Alm, Kaernten, Austria / Camera: SBIG ST-10XME with AO-8 and CFW-9 / Exposure: 5.0 hours (luminance 36x5 min. bin 1x1, red 6x5 min. bin 2x2, green …

We present 21 cm observations of Arp 158. We have performed a study of the neutral hydrogen (Hi) to help us understand the overall formation and evolution of this system.

2004年5月20日 · Arp 158 bears a certain optical resemblance to NGC 520 (Arp 157), which has been identified as a mid-stage merger. From our 21 cm observations of Arp 158, we also see a comparable HI content with NGC 520. These similarities suggest that Arp 158 is also an intermediate stage merger.

2022年5月5日 · Arp 158 (NGC 523, UGC 929, PGC 5268, VV 783 and others) is the odd trainwreck at the top left. Located approximately 194 million light-years away in Andromeda, this one is part of Arp’s, ‘Galaxies (not classifiable as S or E); Disturbed with interior absorption’ class. Luminance – 24x600s – 240 minutes – binned 1x1

Arp 158: A Study of the HI 265 2 Observations and Data Reduction We obtained high senstivity D-configuration observations of the 21 cm line of atomic hydrogen (HI) for the galaxy, Arp 158. This was done using the VLA in its spectral line mode. The galaxy was observed for …

2003年1月1日 · We present here 21 cm observations of Arp 158. We have performed a study of the HI to help us understand the overall formation and evolution of this system and its role in galaxy evolution. According to the evolutionary sequence described by Hibbard & van Gorkom (1996), Arp 158 appears to be an intermediate stage merger.

2004年9月1日 · We present 21 cm observations of Arp 158. We have performed a study of the neutral hydrogen (H I) to help us understand the overall formation and evolution of this system. This is a disturbed system with distinct optical knots connected by a linear structure embedded in luminous material.

NGC 523, also known as Arp 158, from the ARP catalog is a spiral galaxy located in the constellation Andromeda. It was discovered separately by William Herschel...

Names: NGC 523, NGC 527, UGC 979, PGC 5268, MCG +06-04-018, ARP 158, VV 783, IV Zw 45 Right Ascension (2000.0) 01:25:20.7: Declination +34:01:30: Constellation ...