2007A&A...468..221F


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.03CET12:36:29

2007A&A...468..221F - Astronomy and Astrophysics, volume 468, 221-231 (2007/6-2)

Simultaneous XMM-Newton and VLT/UVES observations of the flare star CN Leonis.

FUHRMEISTER B., LIEFKE C. and SCHMITT J.H.M.M.

Abstract (from CDS):

We present simultaneous observations with VLT/UVES and XMM-Newton of the active M5.5 dwarf CN Leo (Gl 406). The data were gathered during three half nights in May 2004 and December 2005, and they cover quiescent states, as well as flaring activity. Our main aim is to derive coronal properties from X-ray data and to compare these to results from the optical FeXIII line. We studied simultaneously-measured coronal and chromospheric parameters of CN Leo as determined from the XMM-Newton X-ray data, the forbidden optical coronal FeXIII line at 3388Å, and various optical chromospheric emission lines. We find that different activity levels of CN Leo can be traced as well in X-rays as with the FeXIII line. Moreover, the FeXIII line flux is in good agreement with a prediction using the differential emission measure as determined from the X-ray spectrum and Fe atomic data. We also present coronal X-ray properties for the quiescent and flaring states of CN Leo. During a flare two HeII transition region lines are also detected in the optical data.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: late-type - stars: individual: CN Leo - stars: coronae - X-rays: stars

Simbad objects: 5

goto Full paper

goto View the reference in ADS

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 - 2021
#notes
1 G 272-61B Er* 01 39 01.6334059022 -17 57 01.121866655           M6V 795 0
2 G 9-38 Er* 08 58 15.061776 +19 45 46.96020   15.58   13.40   M7V+M7V 98 0
3 G 9-38A PM* 08 58 15.0737928221 +19 45 48.243897495     13.93     M8Ve 87 0
4 Wolf 359 Er* 10 56 28.826208 +07 00 52.34400 16.706 15.541 13.507 11.684 9.507 dM6 637 0
5 NAME Proxima Centauri Er* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 994 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2007A&A...468..221F and select 'bookmark this link' or equivalent in the popup menu


2020.12.03-12:36:29

© Université de Strasbourg/CNRS

    • Contact