Observation by Robin Leadbeater: Mrk 1486 - An element factory

Uploaded by

Robin Leadbeater

Observer

Robin Leadbeater

Observed

2024 Jan 07 - 01:05

Uploaded

2024 Jan 09 - 01:51

Objects

Markarian 1486
Spectrum

Equipment

ALPY 200 spectrograph
ATIK 428 ex camera
Celestron C11 SCT 280mm aperture f5.5

Exposure

4800s

Location

Wigton Cumbria UK

Target name

Mrk 1486

Title

Mrk 1486 - An element factory

About this image

This mag 17 3x6 arcsec smudge is irregular dwarf galaxy Mrk 1486. It is an undergoing intense star formation activity producing the strong emission lines in the spectrum, similar to that seen from HII star forming regions in our own galaxy like the Orion Nebula but in this case galaxy wide giving rise to the classification as an HII galaxy. A study of the distribution of the relative strength of various emission lines has concluded that Mrk 1486 is accreting metal poor material from the surrounding intergalactic medium, processing it through young massive stars to produce heavier elements, expelling it in the form of stellar wind and supernova remnants which then outflows above and below the galactic plane, back into the intergalactic medium.

Ref: The DUVET Survey: Direct Te-based Metallicity Mapping of Metal-enriched Outflows and Metal-poor Inflows in Markarian 1486 Alex J. Cameron et al 2021 ApJL 918 L16

Files associated with this observation

MRK1486_poster.png (311.4 kB)

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Graham Winstanley, Dr Paul Leyland, Alun Halsey

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