2001A&A...378.1003S


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.19CET18:14:39

2001A&A...378.1003S - Astronomy and Astrophysics, volume 378, 1003-1013 (2001/11-2)

Infall variability in the Classical T Tauri system VZ Chamaeleonis.

SMITH K., LEWIS G.F., BONNELL I.A. and EMERSON J.P.

Abstract (from CDS):

We present time series spectroscopy of the Classical T Tauri star VZ Cha. We follow spectral variations at intermediate resolution over five successive nights, or approximately two rotation periods. We see profile features which persist on timescales longer than the expected infall time from the inner disc, and we see expected evidence of rotational variations in the lines, but we also note that rotation alone cannot produce all the observed variability and some other mechanism must be invoked. The behaviour of Hα is observed to be markedly different from that of the other lines. In particular, the evidence of rotational effects is lacking at Hα, and the activity in the red and blue wings of the line is not significantly correlated, in contrast to the other Balmer lines.

Abstract Copyright:

Journal keyword(s): accretion - accretion disks - stars: activity, pre-main sequence, variables: general

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* DG Tau TT* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 902 1
2 V* DR Tau TT* 04 47 06.2152696011 +16 58 42.814250257 12.03 11.86 10.50 12.19   K5Ve 462 0
3 V* SU Aur TT* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 525 0
4 V* VZ Cha Or* 11 09 23.7736314968 -76 23 20.855918834   13.82 12.94   12.14 K7e 121 0
5 NAME Chamaeleon Region SFR 12 00 -79.0           ~ 168 1

    Equat.    Gal    SGal    Ecl

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2019.11.19-18:14:39

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