Azmidi

Stellarium star chart.
Map of Argo in Stellarium with the Little Shield marked and xi Pup highlighted.

This modern star name for ξ Pup is based on corruptions of a Greek term (Aspidiske) that was used to describe several stars in the constellation of Argo, The Ship. Today, it is located in the constellation Puppis.

Etymology and History

Almagest Star Catalogue for Argo

In the following excerpt of Ptolemy's star list in Argo shows that he describes three stars relative to a "little shield" (Aspidiske):

No.Greek (Heiberg 1894)English translation (Toomer 1984)ident.
3τών ύπὲρ τὴν έν τῇ πρύμνῃ ἀσπιδίσκηv β συνεχῶν

ὁ βορειότερος

The northernmost of the 2 stars close together over the little shield in the poopxi Pup
4vοτιώτερος αὐτῶνThe southernmost of themo Pup
5ὁ τούτωv προηγούμεvοςThe star in advance of thesem Pup

(HR 2944)

6ὁ έν μέσῃ τῇ ἀσπιδίσκῃ λαμπρόςThe bright star in the middle of the little shieldk Pup

(HR 2948 +29)

7τῶν ὑπο την ἀσπιδίσκην γ ὁ προηγούμενοςThe most advanced of the 3 stars under the little shieldp Pup

(HR 2922)

8ὁ ἐπόμεvος αὐτῶνThe rearmost of them3 Pup
9ὁ μέσος τῶν τριῶvThe middle one of the three1 Pup

The shield is marked by the star k Pup (HIP 37229) while the stars ξ and o Pup frame the shield to the north, and p Pup, 3 Pup and 1 Pup frame it to the south.

Allen (1899, 74)

ι (iota), 2.9, pale yellow.

This was the Latins’ Scutulum, or Little Shield, the Arabians’ Turais, probably referring to the ornamental Aplustre at the stern of the Ship in the subdivision Carina; but Hyde, quoting it as Turyeish from Tizini, said that the original was verbum ignotum, and suggested that some one else should make a guess at it and its meaning. Smyth wrote of it as "corresponding to the ᾽Aσπιδίσκε of Ptolemy"; but the latter described it as being in the ᾽Aκροστόλιον, Gunwale, and located κ, ξ, o, π, ρ, σ, and τ in the ᾽Aσπιδίσκε, or Aplustre, where they are shown to-day. The Century Atlas follows Smyth in calling ι Aspidiske. It is visible from the latitude of New York City.

ξ (xi), 3.4, has been called Asmidiske by an incorrect transliteration of the ᾽Aσπιδίσκε where it is located with the star ι.

Mythology

The star or the shield do not have an individual mythology. The Ship Argo has a Greek mythology and possibly also roots in the Mesopotamian Gilgamesh Epic.

IAU Working Group Star Names

The name was discussed and approved by the IAU WGSN in 2018; its corrupted (and much shorter) form "Azmidi" was given to ξ Pup in the IAU-CSN.


Weblinks

Reference