Metallicities of 4 blue supergiants near the Galactic centre

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


High resolution optical spectra of four blue supergiants (HD148422 B0.5 Ib; HD178487 B0.5 Ib; HD179407 B1 Ib, HD163522 B1 Ib) which lie within 4.5 kpc of the Galactic centre are presented. Careful differential LTE model atmosphere analyses are used to quantify the differences in photospheric metal abundances between these stars and MK spectral standards in the solar neighborhood. A detailed non-LTE model atmosphere analysis of one star (HD163522) confirms that the LTE differential abundances should be reliable, provided we use a comparison star with similar atmospheric parameters.
Original languageEnglish
Pages (from-to)763-779
Number of pages17
JournalAstronomy and Astrophysics
Publication statusPublished - 1997

Fingerprint Dive into the research topics of 'Metallicities of 4 blue supergiants near the Galactic centre'. Together they form a unique fingerprint.

Cite this