M33 (Triangulum) with Emission Structures in Ha / O3 (Jim Thommes)

M33 (Triangulum) with Emission Structures in Ha / O3

Link: https://www.jthommes.com/Astro/M33_HaO3.htm

The original image page is LRGB with Ha and O3 filters used to highlight the emission structures. The mouse over is the annotated image.

Rev C image page is the LRGB only image. The mouse over is the original image with Ha and O3; it serves as a 'blink' comparison for the emission structures.

M33 is a well studied galaxy and has many prominent emission structures with multiple M33 survey catalogs of these structures. The annotated image shows groupings of these emission structures - it focuses on four of these catalogs (BCLMP, CPSDP, [LHK2017], and [RVP2013]). There are also emission structures of M33 in the NGC and IC catalogs - also shown in the annotated image. There are several background galaxies and Quasars in this image that can be seen in the full size and annotated images. These objects, information, and in particular the emission structures are identified in the Annotated image as well as some of the brighter Milky Way stars.

Surveys Referenced:

BCLMP - (Boulesteix+Courtes+Laval+Monnet+Petit) 1974A&A....37...33B[size=100] ([/size]An optical study of M 33: I. Morphology of the gas.)
CPSDP - (Courtes+Petit+Sivan+Dodonov+Petit) 1987A&A...174...28C (H-α survey of M 33 [size=100]...)[/size]
[LHK2017] - (Lin+Hu+Kong+) 2017ApJ...842...97L[size=100] [/size](Spectroscopic observation and analysis of H II regions in M33 ...)
[RVP2013] - (Relano+Verley+Perez+)[size=100] [/size]2013A&A...552A.140R (Spectral energy distributions of HII regions in M33[size=100]...)[/size]

FUll size Website image (Pan and Zoom) - Full Resolution Image

Full size Website annotated image (Pan and Zoom) - Annotated Image

Final
Original
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C
D

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Title: Annotated Image

Uploaded: ...

C

Title: LRGB version

Description: Mouseover for Narrow Band image additions

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D

Title: M33 Ha, O3 Starless

Description: Starless NB mapping (prior to black clipping for screening into LRGB)

Uploaded: ...

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