2009CoAst.160....9A

Query : 2009CoAst.160....9A

2009CoAst.160....9A - Com. in Asteroseismology, 160, 9 (2009/December-0)

NGC 1817: the richest population of ? Scuti stars.

ANDERSEN M.F., ARENTOFT T., FRANDSEN S., GLOWIENKA L., JENSEN H.R. and GRUNDAHL F.

Abstract (from CDS):

We combined two sets of data to get high-precision time-series for stars in the open cluster NGC 1817. We veri?ed most of the variable stars detected earlier and found some new ones. To the 12 ? Scuti variables detected prior to this article 4 new ? Scuti stars and one candidate have been added. In addition 3 ? Doradus candidates have been detected. The total number of variables and possible variables in NGC 1817, or in the ?eld of view of the cluster is now up to 26. This high number of pulsating stars and especially ? Scuti variables makes this cluster an interesting asteroseismic target for future study. Using asteroseismology on ? Scuti stars will hopefully provide us with information that eventually will constrain the theoretical models of stars. This will in the end give us a much greater understanding of the evolution of stellar objects.

Abstract Copyright: ∼

Journal keyword(s):

Simbad objects: 1

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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 1817	OpC	05 12 33.9	+16 41 34						~	210	0

Query : 2009CoAst.160....9A

Basic data :

NGC 1817 -- Open Cluster
Other object types:	`Cl* (2020A&A,C,...)`, `OpC (2013A&A)`
ICRS coord. (ep=J2000) :	`05 12 33.9 +16 41 34 (Optical) [ ] E 2023A&A...674A..37G`
FK4 coord. (ep=B1950 eq=1950) :	`05 09 40.6 +16 38 02 [ ]`
Gal coord. (ep=J2000) :	`186.1970 -13.0319 [ ]`
Proper motions mas/yr :	`0.485 -0.890 [0.007 0.005 90] C` `2020A&A...633A..99C`
Radial velocity / Redshift / cz :	`V(km/s) 66.21 [0.04] / z(spectroscopic) 0.000221 [0.000000] / cz 66.22 [0.04] (NIR) A 2019A&A...623A..80C`
Parallaxes (mas):	`0.551 [0.003] C` `2020A&A...633A..99C`
Angular size (arcmin):	`16.0 16.0 0 (~) D` `2010A&A...516A...3K`

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Hierarchy : number of linked objects
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`NGC 1817`	`Cl Collinder 60`	`[KPS2012] MWSC 0484`
`C 0509+166`	`[KPR2004b] 64`

References (210 between 1850 and 2026) (Total 210)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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Data at NED - NASA/IPAC Extragalactic Database : NGC 1817

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NGC 1817

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