67 citations · 186 across the 13 of their papers we have counts for
13 papers
Discovery of metal-poor and distant pre-main sequence candidates in WLM with JWST
Venu M. Kalari, Ricardo Salinas, Morten Andersen +4
We present the discovery of twelve metal-poor and distant pre-main sequence (PMS) candidates in the dwarf irregular galaxy Wolf-Lundmark-Melotte (WLM)~968 kpc away, at a present-da…
A high-resolution imaging survey of massive young stellar objects in the Magellanic Clouds
Venu M. Kalari, Ricardo Salinas, Hans Zinnecker +3
Constraints on the binary fraction of young massive stellar objects (mYSOs) are important for binary and massive star formation theory. Here, we present speckle imaging of 34 mYSOs…
The Carina High-Contrast Imaging Project for massive Stars (CHIPS) I. Methodology and proof of concept on QZ Car ( HD93206)
A. Rainot, M. Reggiani, H. Sana +13
Massive stars like company. However, low-mass companions have remained extremely difficult to detect at angular separations () smaller than 1" (~1000-3000 au considering typical…
Sparse Aperture Masking of Massive Stars
H. Sana, S. Lacour, J. -B. Le Bouquin +5
We present the earliest results of our NACO/VLT sparse aperture masking (SAM) campaign to search for binarity in a sample of 60 O-type stars. We detect Delta Ks < 5 mag companions…
Star formation history of CMa R1: I. Wide-field X-ray study of the young stellar population
J. Gregorio-Hetem, T. Montmerle, C. V. Rodrigues +3
The CMa R1 star-forming region contains several compact clusters as well as many young early-B stars. It is associated with a well-known bright rimmed nebula, the nature of which i…
A Hubble View of Star Forming Regions in the Magellanic Clouds
D. A. Gouliermis, Th. Henning, W. Brandner +13
The Magellanic Clouds (MCs) offer an outstanding variety of young stellar associations, in which large samples of low-mass stars (with masses less than 1 solar mass) currently in t…
Resolving the compact HII regions in N160A with HST
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +4
Using high-resolution imaging with the Hubble Space Telescope, we study the Large Magellanic Cloud HII region N160A and uncover several striking features of this complex massive st…
ADONIS observations of X-ray emitting late B-type stars in Lindroos systems
N. Huelamo, W. Brandner, A. G. A. Brown +2
We present adaptive optics JHKs imaging observations of three main-sequence late B-type stars listed in the Lindroos Catalogue: HD123445, HD127971 and HD129791. Given their spectra…
A Dynamical Mass Constraint for Pre-Main-Sequence Evolutionary Tracks: The Binary NTT 045251+3016
A. T. Steffen, R. D. Mathieu, M. G. Lattanzi +6
We present an astrometric/spectroscopic orbital solution for the pre-main-sequence binary NTT 045251+3016. Our measurements for the primary and secondary masses are 1.45 +/- 0.19 M…
HST observations of the LMC compact HII region N11A
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +3
We present a study of the LMC compact HII region N11A using Hubble Space Telescope imaging observations which resolve N11A and reveal its unknown nebular and stellar features. The…
HST study of the LMC compact star forming region N83B
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +3
High resolution imaging with the HST uncovers the so far hidden stellar content and the nebular features of the high excitation compact HII region N83B in the Large Magellanic Clou…
Origin and possible birthplace of the extreme runaway star HIP 60350
P. Tenjes, J. Einasto, H. M. Maitzen +1
Using the recently determined spatial velocity components of the extreme runaway star HIP 60350 and a gravitation potential model of the Galaxy, we integrate the orbit of HIP 60350…
The `Papillon' nebula: a compact HII blob in the LMC resolved by HST
M. Heydari-Malayeri, M. R. Rosa, V. Charmandaris +2
We present high spatial resolution HST imaging of the LMC compact HII region N159-5. This high excitation blob is revealed to be a `papillon' or butterfly-shaped ionized nebula wit…