SIMBAD references

2002MNRAS.329L..29L - Mon. Not. R. Astron. Soc., 329, L29-L33 (2002/January-2)

ECHA J0843.3-7905: Discovery of an `old' classical T Tauri star in the η Chamaeleontis cluster.

LAWSON W.A., CRAUSE L.A., MAMAJEK E.E. and FEIGELSON E.D.

Abstract (from CDS):

A limited-area survey of the η Chamaeleontis cluster has identified two new late-type members. The more significant of these is ECHA J0843.3-7905 (=IRAS F08450-7854), a slowly rotating (P=12 d) M2 classical T Tauri (CTT) star with a spectrum dominated by Balmer emission. At a distance of 97pc and cluster age of ~9Myr, the star is a nearby rare example of an `old' CTT star and promises to be a rewarding laboratory for the study of disc structure and evolution in pre-main sequence (PMS) stars. The other new member is the M4 weak-lined T Tauri (WTT) star ECHA J0841.5-7853, which is the lowest mass (M~0.2 M_☉) primary known in the cluster.

Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): stars: activity - circumstellar matter - stars: pre-main-sequence - stars: rotation - open clusters and associations: individual: η Chamaeleontis

Nomenclature: Table 1: ECHA JHHMM.m+DDMM N=2.

CDS comments: Table 1: Anonymous star = EQ J084834.9-785352.

Simbad objects: 19

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