Results 21 to 30 of about 32,885 (244)
Abundances in Sagittarius: present state and perspectives for the use of VLT [PDF]
, 1999 Sagittarius, the nearest external galaxy, will be amenable to detailed abundance studies with VLT and other 8m class telescopes. Such data, in conjuction with the similar data of our own galaxy, will allow a deeper understanding of chemical evolution ...
Bonifacio, Piercarlo
core +3 more sources
Graellsia, 2022 Se han examinado dos cuantiosas colecciones de Cylindroiulus (una del País Vasco y Navarra y otra de Andalucía), y se han suplementado con otras, más pequeñas, de otras áreas de España; en total se han encontrado 10 especies. Se han descrito tres nuevas
Helen J. Read
doaj +1 more source
The Parallax and 3D Kinematics of Water Masers in the Massive Star-forming Region G034.43+0.24
The Astrophysical Journal, 2023 We report a measurement of the trigonometric parallax of 22 GHz water masers in the massive star-forming region G034.43+0.24 as part of the Bar and Spiral Structure Legacy Survey using the Very Long Baseline Array.
Xiaofeng Mai +14 more
doaj +1 more source
Dark Matter Direct Search Rates in Simulations of the Milky Way and Sagittarius Stream
, 2012 We analyze self-consistent N-body simulations of the Milky Way disk and the ongoing disruption of the Sagittarius dwarf satellite to study the effect of Sagittarius tidal debris on dark matter detection experiments. In agreement with significant previous
Purcell, Chris W. +2 more
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Distribution and Kinematics of Classical Cepheids in the Galactic Outer Ring
Open Astronomy, 2015 The existence of an outer ring in the Galaxy can explain the kinematics of OB associations in the Perseus and Sagittarius stellar-gas complexes. Moreover, it can also explain the orientation of the Carina arm with respect to the major axis of the bar. We
Mel’nik A. M. +4 more
doaj +1 more source
Observing—and Imaging—Active Galactic Nuclei with the Event Horizon Telescope
Galaxies, 2016 Originally developed to image the shadow region of the central black hole in Sagittarius A* and in the nearby galaxy M87, the Event Horizon Telescope (EHT) provides deep, very high angular resolution data on other active galactic nucleus (AGN) sources ...
Vincent L. Fish +9 more
doaj +1 more source
Trigonometric parallaxes of star forming regions in the Sagittarius spiral arm
, 2014 We report measurements of parallaxes and proper motions of ten high-mass star-forming regions in the Sagittarius spiral arm of the Milky Way as part of the BeSSeL Survey with the VLBA.
Brunthaler, A. +9 more
core +1 more source
Stellar orbits near Sagittarius A [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We present new SHARP/NTT stellar proper motion and accelaration data covering an interval from 1992 to 2000: 1) We combine the high precision but shorter time scale NIRC/Keck data with the lower precision but longer time scale SHARP/NTT data set; 2) We statistically correct the observed accelerations for geometrical projection effects; 3) We exclude ...
Eckart, A. +3 more
openaire +3 more sources
Distance to G14.33-0.64 in the Sagittarius Spiral Arm: H2O Maser Trigonometric Parallax with VERA
, 2010 We report on trigonometric parallax measurements for the Galactic star forming region G14.33-0.64 toward the Sagittarius spiral arm. We conducted multi-epoch phase-referencing observations of an H2O maser source in G14.33-0.64 with the Japanese VLBI ...
Hirota, Tomoya +7 more
core +1 more source
Radio images of Sagittarius. I - Overview, Sagittarius D and Sagittarius E
The Astrophysical Journal Supplement Series, 1992 The Sagittarius source complex (sources Sgr A-E) was mapped in the radio continuum at 1616 MHz with various combinations of the VLA B, C, and D configurations, showing the detailed structure of many sources for the first time. An overview of that survey and of the kinematics of neutral gas in the complex is given.
openaire +1 more source