2005ApJ...619..945J

Query : 2005ApJ...619..945J

2005ApJ...619..945J - Astrophys. J., 619, 945-947 (2005/February-1)

On the origin of the very young groups η and ε Chamaeleontis.

JILINSKI E., ORTEGA V.G. and DE LA REZA R.

Abstract (from CDS):

The three-dimensional orbits of the kinematical centers of the η Cha and ε Cha compact groups are retraced under the action of a general Galactic potential. The results show that both groups were formed in the same spatial region about 7 Myr ago. Their birthplace appears to be quite near the Lower Centaurus Crux subgroup of the Sco-Cen OB association. The epoch of minimum separation in the past between η Cha and ε Cha turns out to be consistent with the estimated evolutionary age.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: η Chamaeleontis - Galaxy: Open Clusters and Associations: Individual: Name: ε Chamaeleontis - Stars: Formation - Stars: Kinematics - Stars: Pre-Main-Sequence - Stars: Supernovae: General

Simbad objects: 10

Full paper

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Number of rows : 10

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2024	#notes
1	* bet Pic	PM*	05 47 17.0876901	-51 03 59.441135	4.13	4.03	3.86	3.74	3.58	A6V	1908	1
2	* eta Cha	Pu*	08 41 19.5125857944	-78 57 48.105898056	5.02	5.351	5.453			B8V	232	0
3	NAME eta Cha Association	OpC	08 42 32.9	-78 57 47						~	363	0
4	NAME TW Hya Association	As*	11 01.9	-34 42						~	942	0
5	* eps Cha	EB*	11 59 37.57634	-78 13 18.6179						B9V(n)	106	0
6	NAME eps Cha Association	OpC	11 59 51	-78 12.4						~	161	1
7	NAME Lower Centaurus Crux	As*	12 19	-57.1						~	479	1
8	NAME beta Pic Moving Group	MGr	14 30	-42.0						~	777	0
9	NAME Upper Centaurus Lupus	As*	15 24	-41.9						~	476	1
10	NAME Upper Sco-Cen	As*	16 15	-24.2						~	1332	1

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