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Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA: Radio binary stars in Orion
Sergio A. Dzib, Jazmín Ordóñez-Toro, Laurent Loinard +9
We present results from a multi-epoch Very Long Baseline Array (VLBA) survey conducted as part of the DYNAMO-VLBA project, aimed at measuring the dynamical masses of young stellar…
Dynamical masses of YSOs with the VLBA: DYNAMO VLBA: Trigonometric parallaxes and proper motions of YSOs in Orion
Sergio A. Dzib, Jazmín Ordóñez-Toro, Laurent Loinard +9
We present results from a multi-epoch Very Long Baseline Array (VLBA) survey of compact radio sources in the Orion complex, conducted within both the DYNAMO-VLBA and the GOBELINS p…
Precise Mass, Orbital motion and Stellar properties of the M-dwarf binary LP 349-25AB
Salvador Curiel, Gisela N. Ortiz-Leon, Amy J. Mioduszewski +1
LP~34925 is a well studied close stellar binary system comprised of two late M dwarf stars, both stars close to the limit between star and brown dwarf. This system was previousl…
SiO maser astrometry of the red transient V838 Monocerotis
Gisela N. Ortiz-Leon, Karl M. Menten, Tomasz Kaminski +3
We present multi-epoch observations with the VLBA of SiO maser emission in the v=1, J=1-0 transition at 43 GHz from the remnant of the red nova V838 Mon. We model the positions of…
Sub-stellar companions of the young weak-line TTauri Star DoAr21
Salvador Curiel, Gisela N. Ortiz-León, Amy J. Mioduszewski +1
The compact, non-thermal emission in DoAr21 has been studied with the VLBA to investigate the possibility that the residuals of the astrometry fitting are due to the reflex motion…
Structure and kinematics of the Taurus star-forming region from Gaia-DR2 and VLBI astrometry
P. A. B. Galli, L. Loinard, H. Bouy +9
Aims:We take advantage of the second data release of the Gaia space mission and the state-of-the-art astrometry delivered from very long baseline interferometry observations to rev…
Gaia-DR2 confirms VLBA parallaxes in Ophiuchus, Serpens and Aquila
Gisela N. Ortiz-León, Laurent Loinard, Sergio A. Dzib +9
We present Gaia-DR2 astrometry of a sample of YSO candidates in Ophiuchus, Serpens Main and Serpens South/W40 in the Aquila Rift, which had been mainly identified by their infrared…
Distances and Kinematics of Gould Belt Star-Forming Regions with Gaia DR2 results
Sergio A. Dzib, Laurent Loinard, Gisela N. Ortiz-León +2
We present an analysis of the astrometric results from Gaia second data release (DR2) to Young Stellar Objects (YSOs) in star-forming regions related to the Gould Belt. These regio…
The Gould's Belt Distances Survey (GOBELINS). V. Distances and Kinematics of the Perseus molecular cloud
Gisela N. Ortiz-León, Laurent Loinard, Sergio A. Dzib +10
We derive the distance and structure of the Perseus molecular cloud by combining trigonometric parallaxes from Very Long Baseline Array (VLBA) observations, taken as part of the GO…
The Gould's Belt Distances Survey (GOBELINS). IV. Distance, Depth and Kinematics of the Taurus Star-Forming Region
Phillip A. B. Galli, Laurent Loinard, Gisela N. Ortiz-Leon +13
We present new trigonometric parallaxes and proper motions of young stellar objects in the Taurus molecular cloud complex from observations collected with the Very Long Baseline Ar…
A revised distance to IRAS 162932422 from VLBA astrometry of associated water masers
S. A. Dzib, G. N. Ortiz-León, A. Hernández-Gómez +6
IRAS 16293-2422 is a very well studied young stellar system seen in projection towards the L1689N cloud in the Ophiuchus complex. However, its distance is still uncertain with a ra…
VLBA Determination of the Distance to Nearby Star-forming Regions. VIII. The LkH 101 cluster
S. A. Dzib, G. N. Ortiz-León, Laurent Loinard +4
The LkH 101 cluster takes its name from its more massive member, the LkH 101star, which is an M star whose true nature is still unknown. The distance to the…
The Gould's Belt Distances Survey (GOBELINS) I. Trigonometric parallax distances and depth of the Ophiuchus complex
Gisela N. Ortiz-León, Laurent Loinard, Marina A. Kounkel +14
We present the first results of the Gould's Belt Distances Survey (GOBELINS), a project aimed at measuring the proper motion and trigonometric parallax of a large sample of young s…
The Gould's Belt Distances Survey (GOBELINS) III. The distance to the Serpens/Aquila Molecular Complex
Gisela N. Ortiz-León, Sergio A. Dzib, Marina A. Kounkel +12
We report on new distances and proper motions to seven stars across the Serpens/Aquila complex. The observations were obtained as part of the Gould's Belt Distances Survey (GOBELIN…
The Gould's Belt Distances Survey (GOBELINS) II. Distances and structure towards the Orion Molecular Clouds
Marina Kounkel, Lee Hartmann, Laurent Loinard +12
We present the results of the Gould's Belt Distances Survey (GOBELINS) of young star forming regions towards the Orion Molecular Cloud Complex. We detected 36 YSOs with the Very La…
Variable Radio Emission from the Young Stellar Host of a Hot Jupiter
Geoffrey C. Bower, Laurent Loinard, Sergio Dzib +4
We report the discovery of variable radio emission associated with the T Tauri star, V830 Tau, which was recently shown to host a hot Jupiter companion. Very Large Array observatio…
The Gould's Belt Very Large Array Survey V: The Perseus Region
Gerardo Pech, Laurent Loinard, Sergio A. Dzib +12
We present multi-epoch, large-scale ( 2000 arcmin), fairly deep ( 16 Jy), high-resolution ( 1") radio observations of the Perseus star-forming complex ob…
Internal and relative motions of the Taurus and Ophiuchus star-forming regions
Juana L. Rivera, Laurent Loinard, Sergio A. Dzib +3
We investigate the internal and relative motions of the Taurus and Ophiuchus star-forming regions using a sample of young stars with accurately measured radial velocities and prope…
The Gould's Belt Very Large Array Survey II: The Serpens region
Gisela N. Ortiz-León, Laurent Loinard, Amy J. Mioduszewski +12
We present deep (Jy) radio continuum observations of the Serpens molecular cloud, the Serpens south cluster, and the W40 region obtained using the Very Large Array in it…
Tomography of Galactic star-forming regions and spiral arms with the Square Kilometer Array
Laurent Loinard, Mark Thompson, Melvin Hoare +12
Very Long Baseline Interferometry (VLBI) at radio wavelengths can provide astrometry accurate to 10 micro-arcseconds or better (i.e. better than the target GAIA accuracy) without b…
The Gould Belt Very Large Array Survey IV: The Taurus-Auriga complex
Sergio A. Dzib, Laurent Loinard, Luis F. Rodríguez +11
We present a multi-epoch radio study of the Taurus-Auriga star-forming complex made with the Karl G. Jansky Very Large Array at frequencies of 4.5 GHz and 7.5 GHz. We detect a tota…
An Ionized Outflow from AB Aur, a Herbig Ae Star with a Transitional Disk
Luis F. Rodriguez, Luis A. Zapata, Sergio A. Dzib +4
AB Aur is a Herbig Ae star with a transitional disk. Transitional disks present substantial dust clearing in their inner regions, most probably because of the formation of one or m…
The Gould's Belt Very Large Array Survey III. The Orion region
Marina Kounkel, Lee Hartmann, Laurent Loinard +11
We present results from a high-sensitivity (60 Jy), large-scale (2.26 square degree) survey obtained with the Karl G. Jansky Very Large Array as part of the Gould's Belt Survey…
The Gould's Belt Very Large Array Survey I: The Ophiuchus complex
Sergio A. Dzib, Laurent Loinard, Amy J. Mioduszewski +10
We present large-scale ( 2000 square arcminutes), deep ( 20 Jy), high-resolution ( 1) radio observations of the Ophiuchus star-forming complex obtained wit…