Zobrazeno 61 - 70
of 540
pro vyhledávání: '"Moscadelli, L."'
We imaged the molecular outflows towards the cluster of high-mass young stellar objects G24.78+0.08 at high-angular resolution using SiO emission, which is considered the classical tracer of protostellar jets. We performed SiO observations with the V
Externí odkaz:
http://arxiv.org/abs/1212.0473
Autor:
Li, J. J., Moscadelli, L., Cesaroni, R., Furuya, R. S., Xu, Y., Usuda, T., Menten, K. M., Pestalozzi, M., Elia, D., Schisano, E.
We used the Very Long Baseline Array (VLBA) and the European VLBI Network (EVN) to perform phase-referenced VLBI observations of the three most powerful maser transitions associated with the high-mass star-forming region G28.87+0.07: the 22.2 GHz H$_
Externí odkaz:
http://arxiv.org/abs/1201.3021
Autor:
Sanna, A., Reid, M. J., Carrasco-Gonzàlez, C., Menten, K. M., Brunthaler, A., Moscadelli, L., Rygl, K. L. J.
We report on a detailed study of the water maser kinematics and radio continuum emission toward the most massive and young object in the star-forming region AFGL 2591. Our analysis shows at least two spatial scales of multiple star formation, one pro
Externí odkaz:
http://arxiv.org/abs/1111.0843
Autor:
Sanna, A., Reid, M. J., Dame, T. M., Menten, K. M., Brunthaler, A., Moscadelli, L., Zheng, X. W., Xu, Y.
We report a trigonometric parallax measurement with the Very Long Baseline Array for the water maser in the distant high-mass star-forming region G75.30+1.32. This source has a heliocentric distance of 9.25+-0.45 kpc, which places it in the Outer arm
Externí odkaz:
http://arxiv.org/abs/1110.4313
Observational signatures of infalling envelopes and outflowing material in early stages of protostellar evolution, and at small radii from the protostar, are essential to progress in the understanding of the mass-accretion process in star formation.
Externí odkaz:
http://arxiv.org/abs/1110.1647
Autor:
Immer, K., Brunthaler, A., Reid, M. J., Bartkiewicz, A., Choi, Y. K., Menten, K. M., Moscadelli, L., Sanna, A., Wu, Y. W., Xu, Y., Zhang, B., Zheng, X. W.
Publikováno v:
ApJS, 194, 25, 2011
We present the results of a survey of radio continuum sources near the Galactic plane using the Very Long Baseline Array (VLBA). Our observations are designed to identify compact extragalactic sources of milliarcsecond size that can be used for paral
Externí odkaz:
http://arxiv.org/abs/1103.5438
We report trigonometric parallaxes for three massive star forming regions, corresponding to distances of $2.34^{+0.13}_{-0.11}$ kpc for G12.89+0.49 (also known as IRAS 18089-1732),$1.98^{+0.14}_{-0.12}$ kpc for G15.03-0.68 (in the M17 region), and $8
Externí odkaz:
http://arxiv.org/abs/1103.3139
IRAS 20126+4104 is one of the best candidates for a high-mass (proto)star surrounded by an accretion disk. Such a fact may be used to set constraints on theories of high-mass star formation, but requires confirmation that the mass and luminosity of I
Externí odkaz:
http://arxiv.org/abs/1011.4816
The present paper focuses on the high-mass star-forming region G23.01-0.41. Methods: Using the VLBA and the EVN arrays, we conducted phase-referenced observations of the three most powerful maser species in G23.01-0.41: H2O at 22.2 GHz (4 epochs), CH
Externí odkaz:
http://arxiv.org/abs/1004.5578
Autor:
Sanna, A., Reid, M. J., Moscadelli, L., Dame, T. M., Menten, K. M., Brunthaler, A., Zheng, X. W., Xu, Y.
Publikováno v:
Astrophys.J.706:464-470,2009
We report a trigonometric parallax of 12 GHz methanol masers associated with the massive star forming region G9.62+0.20, corresponding to a distance of 5.2+-0.6 kpc. With a local standard of rest velocity of about 2 km/s, the region's kinematic dista
Externí odkaz:
http://arxiv.org/abs/0909.3773