Closer look at the shock front part of RCW 85 HII region in Centaurus with 1m aperture (Alexandr Zaytsev)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: HD125158

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Closer look at the shock front part of RCW 85 HII region in Centaurus with 1m aperture

Link: https://coalsack.online/chilescope/Cen_2023Q2/RCW85_T1_10x600s_Ha_c1_at.jpg

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Closer look at the shock front part of RCW 85 HII region in Centaurus with 1m aperture

Link: https://coalsack.online/chilescope/Cen_2023Q2/RCW85_T1_10x600s_Ha_c1_at.jpg

1h 40min of integral Ha exposure of the main shock front (aka "tip rim") area in the RCW 85 HII region / SFO (Star Forming Region) 74 [1-4] around HD 125158 star - captured remotely Telescope #1 (ASA-RC D = 1m f/6.8, FLI ProLine 16803) system of ChileScope observatory on Apr 25, 2023.

[1] http://galaxymap.org/cat/view/rcw/85

[2] https://arxiv.org/abs/1411.1813

[3] https://arxiv.org/pdf/1411.1813.pdf

[4] https://iopscience.iop.org/article/10.1088/0004-637X/798/1/60/pdf

A wider FOV image of the same object in Ha obtained with Chilescope T3 instrument is also available under [5]:

[5] https://www.astrobin.com/502va6/D/

A detailed summary of structure of the shock front of SFO 74 is given in Fig. 10-12 from [4]:

The ionizing star identified for RCW 85 / SFO 74 identified in [6, 7] is HD 124314 [8]:

[6] https://arxiv.org/abs/0902.4751

[7] https://arxiv.org/pdf/0902.4751.pdf

[8] https://simbad.cds.unistra.fr/simbad/sim-id?Ident=+HD+124314&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id

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Status	Advanced success
Started	...
Astrometry.net job	7623352
PixInsight job	PAH27JY1LJ3SMRRPX74DKGEO8ZT5CSF5
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h19m38s.818
RA (top/left)	14h19m31s.428
RA (top/right)	14h21m14s.814
RA (bottom/right)	14h19m46s.340
RA (bottom/left)	14h18m02s.671

Dec (center)	-61°23′36″.77
Dec (top/left)	-61°12′07″.38
Dec (top/right)	-61°22′41″.52
Dec (bottom/right)	-61°35′08″.65
Dec (bottom/left)	-61°24′28″.26

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Closer look at the shock front part of RCW 85 HII region in Centaurus with 1m aperture

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Closer look at the shock front part of RCW 85 HII region in Centaurus with 1m aperture

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