1994A&A...290...62M

Query : 1994A&A...290...62M

1994A&A...290...62M - Astronomy and Astrophysics, volume 29062-68 (1994/10-1)

The luminosity function of stars in the intermediate age open cluster NGC 7789.

MARTINEZ ROGER C., PAEZ E., CASTELLANI V. and STRANIERO O.

Abstract (from CDS):

We report the results of a CCD investigation of stars in a selected region near the center of the intermediate age galactic cluster NGC 7789. A CM diagram is presented for a sample of 1122 stars, which should be complete down to V=20. On the ground of recent theoretical evolutionary models, simulations of both the colour-magnitude diagram and the cluster luminosity function are discussed under different assumptions about age, mass function and binary population. We find that the faint main sequence (V<15) appears rather depopulated of stars, with a distribution of luminosity lower than that expected in the case of a Salpeter's mass function. The distribution of post main sequence stars in the various evolutionary phases is well reproduced by classical models (i.e. with negligible overshooting of the unstable convective layers). Data are best fitted by models having an age of 1.2Gyr. Derived values for distance modulus and reddening are in agreement with previous evaluations. We obtain V-M_v=12.3±0.2 and E(B-V)=0.32±0.03.

Abstract Copyright: ∼

Journal keyword(s): open clusters and associations: individual: NGC 7789 - stars: luminosity function - mass function

Simbad objects: 1

View the references in ADS

Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	NGC 7789	OpC	23 57 19.4	+56 43 28		7.68	6.7			~	575	0

Query : 1994A&A...290...62M

Basic data :

NGC 7789 -- Open Cluster

OpC (2013A&A,OCl), Cl* (2020A&A,C,...)

23 57 19.4 +56 43 28 (Optical) [ ] E 2023A&A...674A..37G

23 54 47.4 +56 26 46 [ ]

115.5250 -05.3671 [ ]

-0.922 -1.933 [0.003 0.003 90] C 2020A&A...633A..99C

V(km/s) -54.91 [0.12] / z(spectroscopic) -0.000183 [0.000000] / cz -54.90 [0.12] (Opt) A 2021A&A...647A..19T

0.453 [0.001] C 2020A&A...633A..99C

25.3 25.3 0 (Opt) D 2020A&A...633A..99C

B 7.68 [~] E ~

V 6.7 [~] E ~

Overlay

points in this preview

2MASS DSS

All

(CDSPortal)

Send to

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

An access of full data is available using the icon Vizier near the identifier of the catalogue

`NGC 7789`	`Cl Melotte 245`	`[KPR2004b] 518`
`C 2354+564`	`OCl 269.0`	`[KPS2012] MWSC 3779`

References (575 between 1850 and 2026) (Total 575)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

Follow new references on this object

Collections of Measurements

External archives :

Data at NED - NASA/IPAC Extragalactic Database : NGC 7789

Link by name to the catalogue in VizieR :

NGC 7789

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 1994A&A...290...62M and select 'bookmark this link' or equivalent in the popup menu