IRAS 04000+5052: a not so compact, not so metal-poor H II region

César Esteban*, Luis López-Martín, Ángel ́ R López-Sánchez, Bernabé Cedrés, Jorge García-Rojas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We present new observations of IRAS 04000+5052, a Galactic H II region that is associated with a young stellar cluster and is possibly located in the Perseus arm. We have found that contrary to previous claims, this object is not a compact metal-poor H II region. The electron density and chemical composition of the nebula are similar to those of normal H II regions of the Galactic disk. The radial velocity of the ionized gas coincides with that obtained from CO observations, indicating that the nebula is associated with a molecular cloud. Probably, the ionizing source of the H II region is a Herbig Be star of spectral type B0.5.

Original languageEnglish
Pages (from-to)723-728
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Issue number822
Publication statusPublished - Aug 2004
Externally publishedYes


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