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Apr 27, 2011

Mass accretion to young stars triggered by flaring activity in circ…

Young low-mass stars are characterized by ejection of collimated outflows and by circumstellar disks which they interact with through accretion of ma…
May 19, 2008

FLAMES spectroscopy of low-mass stars in the young clusters sigma Ori…

Aims. We performed a detailed membership selection and studied the accretion properties of low-mass stars in the two apparently very similar young (1…
May 17, 2008

The flaring and quiescent components of the solar corona

The solar corona is a template to understand stellar activity. The Sun is a moderately active star, and its corona differs from active stars: active …
May 06, 2014

Empirical classification of VLT/Giraffe stellar spectra in the wave…

We study spectral diagnostics available from optical spectra with R=17000 obtained with the VLT/Giraffe HR15n setup, using observations from the Gaia…
Jul 13, 2016

The HADES RV Programme with HARPS-N@TNG - GJ 3998: An early M-dwarf …

Context. M dwarfs are considered ideal targets for Doppler radial velocity searches. Nonetheless, the statistics of frequency of low-mass planets hos…
Nov 29, 2011

The ultracool dwarf DENIS-P J104814.7-395606. Chromospheres and coron…

We have obtained an XMM-Newton observation and a broad-band spectrum from the ultraviolet to the near infrared with X-Shooter for one of the nearest …
Nov 24, 2008

Three-dimensional modeling of the asymmetric blast wave from the 2006…

Chandra/HETG observations of the recurrent nova RS Ophiuchi at day 13.9 of its 2006 outburst reveal a spectrum covering a large range in plasma tempe…
May 23, 2017

The Gaia-ESO Survey: dynamics of ionized and neutral gas in the Lagoo…

We present a spectroscopic study of the dynamics of the ionized and neutral gas throughout the Lagoon nebula (M8), using VLT/FLAMES data from the Gai…
Sep 05, 2012

Spectral classification and HR diagram of pre-main sequence stars in …

Mechanisms involved in the star formation process and in particular the duration of the different phases of the cloud contraction are not yet fully u…
Jun 10, 2014

No X-rays from WASP-18. Implications for its age, activity, and the …

About 20% out of the $>1000$ known exoplanets are Jupiter analogs orbiting very close to their parent stars. It is still under debate to what detecta…
Aug 10, 2015

Supernova 1987A: a Template to Link Supernovae to their Remnants

The emission of supernova remnants reflects the properties of both the progenitor supernovae and the surrounding environment. The complex morphology …
Sep 19, 2013

Radiative accretion shocks along nonuniform stellar magnetic fields i…

(abridged) AIMS. We investigate the dynamics and stability of post-shock plasma streaming along nonuniform stellar magnetic fields at the impact regi…
Mar 10, 2015

Stellar parameters of early M dwarfs from ratios of spectral features…

(Abridged) Low-mass stars have been recognised as promising targets in the search for rocky, small planets with the potential of supporting life. Dop…
Apr 20, 2011

Magnetic fields in supernova remnants and pulsar-wind nebulae

We review the observations of supernova remnants (SNRs) and pulsar-wind nebulae (PWNe) that give information on the strength and orientation of magne…
Dec 09, 2009

X-ray emitting MHD accretion shocks in classical T Tauri stars. Case …

AIMS. We investigate the stability and dynamics of accretion shocks in CTTSs, considering the case of beta >= 1 in the post-shock region. In these ca…
Nov 16, 2018

X-ray spectral characterization of the young Cygnus OB2 population

We analyze the X-ray spectra of the $\sim$8000 sources detected in the Cygnus OB2 Chandra Legacy Survey (Drake et al., this issue), with the goals of…
Sep 23, 2011

Modeling the 2010 blast wave of the symbiotic-like nova V407 Cygni

(Abridged) The symbiotic-like binary Mira and nova V407 Cyg was observed in outburst on March 2010 and monitored in several wavelength bands. Here we…
Jan 03, 2013

X-Shooter spectroscopy of FU Tau A

We have analyzed a broad-band optical and near-infrared spectrum of FU Tau A, a presumed young brown dwarf in the Taurus star forming region that has…
Nov 18, 2011

X-ray view of IC348 in the light of an updated cluster census

We study the properties of the coronae of the low-mass stars in the young (~2-3Myr), nearby (~310pc) open cluster IC348 combining X-ray and optical/i…
Jun 20, 2016

Spot modelling of periodic weak-line T Tauri stars observed by CoRoT …

The space telescope CoRoT has provided light curves of T Tauri stars belonging to the star-forming region of NGC 2264 with unprecedented continuity a…
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