SIMBAD references

2012AJ....143...46N - Astron. J., 143, 46 (2012/February-0)

The young open cluster Berkeley 55.

NEGUERUELA I. and MARCO A.

Abstract (from CDS):

We present UBV photometry of the highly reddened and poorly studied open cluster Berkeley 55, revealing an important population of B-type stars and several evolved stars of high luminosity. Intermediate-resolution far-red spectra of several candidate members confirm the presence of one F-type supergiant and six late supergiants or bright giants. The brightest blue stars are mid-B giants. Spectroscopic and photometric analyses indicate an age 50±10 Myr. The cluster is located at a distance d ~ 4 kpc, consistent with other tracers of the Perseus Arm in this direction. Berkeley 55 is thus a moderately young open cluster with a sizable population of candidate red (super)giant members, which can provide valuable information about the evolution of intermediate-mass stars.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: structure - open clusters and associations: individual: Berkeley 55 - stars: early-type - stars: evolution - supergiants

VizieR on-line data: <Available at CDS (J/AJ/143/46): table2.dat table3.dat table5.dat>

Nomenclature: Figs 1-2, Tables 2-3, 5: [NM2012] NNN (Nos 1-237). Tables 4, 6-7: [NM2012] SNN N=15 among (Nos S1-S61).

CDS comments: 2MASS J21165840+5743262 (= [NM2012] S1) is a probable misprint for 2MASS J21165840+5143262.

Simbad objects: 259

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