SIMBAD references

1998AJ....116..220W - Astron. J., 116, 220-236 (1998/July-0)

CCD photometry of galactic globular clusters. IV. The NGC 1851 RR Lyrae variables.

WALKER A.R.

Abstract (from CDS):

The variable-star population of the Galactic globular cluster NGC 1851 (C0512-400) has been studied by CCD photometry, from observations made in the B, V, and I bands during 1993-1994. Light curves are presented for 29 variables, seven of which are new discoveries. The behavior of the RR Lyrae stars in the period-temperature diagram appears normal when compared with clusters that bracket the NGC 1851 metallicity. Reddening and metallicity are reevaluated, with no compelling evidence being found to change from the values of E(B - V) = 0.02 and [Fe/H] = -1.29 (Zinn scale) adopted in recent studies of the cluster. Photometry is provided for stars in an annulus with radii 80" and 260" centered on NGC 1851. To at least V = 18.5 there is excellent agreement with the extensive earlier photometry for the brighter NGC 1851 stars, with systematics less than 0.02 mag in all colors. Instability-strip boundary positions for several clusters show a trend for the red boundary to move to redder colors as the metallicity increases.

Abstract Copyright:

Journal keyword(s): Galaxy: Globular Clusters: Individual: NGC Number: NGC 1851 - Stars: Variables: RR Lyrae Variable

Nomenclature: Table 3: Cl* NGC 1851 W NNNNN Nos among (Nos 34-10649). Table 5: Cl* NGC 1851 SAW VNN (Nos V27-V33) added.

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: Table 7 : NGC 4499 misprint for IC 4499.

Simbad objects: 37

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:1998AJ....116..220W and select 'bookmark this link' or equivalent in the popup menu


2022.08.12-23:07:54

© Université de Strasbourg/CNRS

    • Contact