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ESO 57-31 (3,906 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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ESO 57-31

ESO 57-31

RA: 05h 43m 19s
Dec: −67° 50′ 53″

Con: Dorado
Ch: MSA:484, U2:445, SA:24

Ref: NED

(reference key)

Type: bright nebula

Mag: B=?, V=?

Size: 7′
PA: ?


From ESO/U:

The 1950.0 position for this object is reported as 05h 43m 29s -67 52.1'

The comments field contains: "Em neb + stars; Spherical, SNR?"

This agrees well with Evans & Thackeray (1950) and Innes [see below]

Published comments

Mohr, J. (1938)

A planetary nebula superposed on the Large Magellanic Cloud. Harvard Obs. Bull., No. 907, 13.

Evans & Thackeray (1950)

A photographic survey of bright southern planetary nebulae. M.N.R.A.S., 110(5), 429-439.

Object 1 on their list of 26 objects believed to be plnebs, > 8 arcsecs and south of -40.

p431: Innes [9] studying 3 plates taken with the 10-inch Franklin-Adams camera, givesd the three descriptions:

' large but faint spiral with stars: a small cluster forms the nucles'

'fine circular spiral with stars'

'very fine circular spiral with stellar nucleus'.

In 1927, the same author [11] says: 'The stars in this spiral nebula are shown as a letter S but the nebulosity is virtually invisible.'. Jenka Mohr [7] discusses plates taken with the 24-inch Bruce, the 10-inch Metcalf and the 3-inch Ross Fecker instruments at Bloemfontein. The diameter is given as 420 arcsec and it is stated that the nucleus 'appears to be a central star of magnitude 12.6, but it is possible that this star is merely superposed.' It is pointed out that the nebula is almost certainly superposed on the Magellanic Cloud, since, at the distance of the cloud, it would have the very large diameter of 50 parsecs. Estiamtes based on statistical discussions of planetaries, assuming the selected star to be the central star, give distances of 1200 parsecs and 2000 parsecs. [further discussion found in article, including a photograph]'

The authors conclude: 'Purely on appearance the nebula might be thought to resemble the final stage of a supernova outburst.'

9 Innes: Union Obs Circ 61, p233, 1924

11 Innes: U.O.C., No.73, p419, 1927

van den Bos, W. O.U.C., No.73, p424, 1927.

See also: Mohr, J. (1938) Harv.Bull., 907, p13, 1938

Lindsay (1953)

A Possible Old Supernova in the Large Magellanic Cloud

"The object in the direction of the Large Magellanic Cloud with co-ordinates RA=5h 43.4m, Dec=67.9 (1950) was first referred to by Innes (Union Observatory Circular, No. 41, 1918). On plates taken with the 10-inch Franklin-Adams camera it appeared to him as a large, fine circular spiral with a small cluster forming the nucleus, the nebulosity being virtually invisible."

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