Results 81 to 90 of about 6,728 (225)

Extending Gaia DR2 with HST narrow-field astrometry. II. Refining the method on WISE J163940.83−684738.6 [PDF]

, 2020
In the second paper of this series we perfected our method of linking high precision Hubble Space Telescope astrometry to the high-accuracy Gaia DR2 absolute reference system to overcome the limitations of relative astrometry with narrow-field cameras ...
Fontanive, C., Bedin, L. R., BEDIN, Luigi   +2 more
core   +1 more source

Gaia Search for Stellar Companions of TESS Objects of Interest V

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT In this paper, we present the latest results of our ongoing multiplicity survey of (Community) TESS Objects of Interest, using astrometry and photometry from the latest data release of the ESA Gaia mission to detect stellar companions of these stars and to characterize their properties.
Markus Mugrauer, Ann‐Kathrin Kollak, Lara Pietsch, Kai‐Uwe Michel   +3 more
wiley   +1 more source

Nanoradian Ground-Based Astrometry, Optical Navigation, and Artificial Reference Stars

, 2016
Spacecraft carrying optical communication lasers can be treated as artificial stars, whose relative astrometry to Gaia reference stars provides spacecraft positions in the plane-of-sky for optical navigation.
Biswas, Abhijit, Ely, Todd, Martin-Mur, Tomas, Jacobs, Christopher, Rud, Mike, Turyshev, Slava, Shao, Michael, Werne, Thomas, Sandhu, Jagmit, Zhai, Chengxing, Owen, William, Saini, Navtej, Lazio, Joseph   +12 more
core   +2 more sources

Constraining the inclination of binary system orbits with the astrometric excess noise from Gaia DR3

Astronomy & Astrophysics
Context. Orbital inclination is crucial in determining the binary mass. The astrometric excess noise contains the orbital motion information, which can be used to constrain the inclination. Aims.
Liao Shilong, Ding Ye, Wen Shangyu, Qi Zhaoxiang, Wu Qiqi   +4 more
doaj   +1 more source

Astrometry with Small Telescopes [PDF]

Symposium - International Astronomical Union, 1986
At the Quonochontaug Observatory of the University of Rhode Island, we specialize in the development of simple seeing limited optical telescopes. Our main instrument is a heavy Serrier trussed f/10.7, .4-m astrometric reflector which provided the last-minute astrometry in the successful prediction of the occultation of SAO 120774 by Herculina in 1978 ...
openaire   +1 more source

The Power of (Near) Simultaneous Multi-Frequency Observations for mm-VLBI and Astrometry

Galaxies, 2017
Simultaneous or near-simultaneous observations at multiple frequency bands have the potential to overcome the fundamental limitation imposed by the atmospheric propagation in mm-VLBI observations.
María J. Rioja, Richard Dodson, José L. Gómez, Sol N. Molina, Taehyun Jung, Bong Won Sohn   +5 more
doaj   +1 more source

New opportunities with spectro-interferometry and spectro-astrometry

, 2012
Latest-generation spectro-interferometric instruments combine a milliarcsecond angular resolution with spectral capabilities, resulting in an immensely increased information content.
S Kraus (7202657)
core  

Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry

, 2023
Context. Thanks to more than 20 yr of monitoring, the radial velocity (RV) method has detected long-period companions (P > 10 yr) around several dozens of stars.
F. Philipot, F. Kiefer, Philipot, F., A.-M. Lagrange, Rubini, P., Kiefer, Flavien, P. Rubini, A. Chomez, Chomez, A., Lagrange, A.-M.   +9 more
core   +1 more source

Modern astrometry /

, 1978
Proceedings"Under the sponsorship of Commission 24 (Photographic Astrometry)" -- p.
IAU colloquium48thSeptember 11-14, 1978Vienna, Austria, Tucker, Roy Henry(viaf)40691178, Prochazka, F. V.,(viaf)43156128, International astronomical union   +3 more
core  

Exomoon search with VLTI/GRAVITY around the substellar companion HD 206893 B

Astronomy & Astrophysics
Context. This study presents the first application of high-precision astrometry to search for exomoons around substellar companions, as this field remains largely unexplored. Aims.
Kral Q., Wang J., Kammerer J., Lacour S., Malin M., Winterhalder T., Charnay B., Perrot C., Huet P., Abuter R., Amorim A., Balmer W. O., Benisty M., Berger J.-P., Beust H., Blunt S., Boccaletti A., Bonnefoy M., Bonnet H., Bordoni M. S., Bourdarot G., Brandner W., Cantalloube F., Caselli P., Chauvin G., Chavez A., Chomez A., Choquet E., Christiaens V., Clénet Y., Coudé du Foresto V., Cridland A., Davies R., Dembet R., Dexter J., Drescher A., Duvert G., Eckart A., Eisenhauer F., Förster Schreiber N. M., Garcia P., Garcia Lopez R., Gardner T., Gendron E., Genzel R., Gillessen S., Girard J. H., Grant S., Haubois X., Henning Th., Hinkley S., Hippler S., Houllé M., Hubert Z., Jocou L., Keppler M., Kervella P., Kreidberg L., Kurtovic N. T., Lagrange A.-M., Lapeyrère V., Le Bouquin J.-B., Lutz D., Maire A.-L., Mang F., Marleau G.-D., Mérand A., Mollière P., Monnier J. D., Mordasini C., Mouillet D., Nasedkin E., Nowak M., Ott T., Otten G. P. P. L., Paladini C., Paumard T., Perraut K., Perrin G., Pfuhl O., Pourré N., Pueyo L., Ribeiro D. C., Rickman E., Rustamkulov Z., Shangguan J., Shimizu T., Sing D., Stadler J., Stolker T., Straub O., Straubmeier C., Sturm E., Tacconi L. J., Vigan A., Vincent F., von Fellenberg S. D., Widmann F., Woillez J., Yazici S., Abd El Dayem K., Aimar N., Berdeu A., Correia C., Defrère D., Fabricius M., Feuchtgruber H., Foschi A., Hönig S. F., Joharle S., Laugier R., Lai O., Leftley J., Lopez B., Millour F., Montargès M., Morujão N., Nowacki H., Osorno J., Petrov R., Petrucci P. O., Rabien S., Robbe-Dubois S., Sadun Bordoni M., Sánchez Bermúdez J., Santos D., Sauter J., Scigliuto J., Soulez F., Subroweit M., Sykes C.   +130 more
doaj   +1 more source