Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Idel Waisberg"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 521:5255-5271
A-type stars are the progenitors of about half of the white dwarfs (WDs) that currently exist. The observational mappings of both multiplicities are far from complete and their connection is not known. We are in the process of obtaining tight constra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31ef7904c9bd8b292c7e51ea322e96d4
https://doi.org/10.1093/mnras/stad873
https://doi.org/10.1093/mnras/stad873
Publikováno v:
Research Notes of the AAS. 7:103
There are many Hipparcos/Gaia astrometric binaries for which the nature of the companion is not known. Optical/near-infrared inteferometry is arguably the most efficient method to unambiguously identify such companions. Here we report on a VLTI/GRAVI
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0035dc2986c724eba42959006e8b80c9
https://doi.org/10.3847/2515-5172/acd76c
https://doi.org/10.3847/2515-5172/acd76c
Publikováno v:
Research Notes of the AAS. 7:95
B-type stars with masses up to about 8 M ⊙ are the progenitors of the heavier white dwarfs yet our knowledge about their multiplicity is still incomplete. The nearby subgiant HIP 92041 = ϕ Sagittarii has had claims of binarity in the past but they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bcf892e1e8382c76b67963da40dd6cf
https://doi.org/10.3847/2515-5172/acd4bf
https://doi.org/10.3847/2515-5172/acd4bf
Publikováno v:
Research Notes of the AAS. 7:81
HIP 83650 is a nearby intermediate mass star that shows the rare λ Boötis phenomenon of still uncertain origin. Here we report the discovery of a companion to this star with a K band flux ratio of 5.9% based on an archival VLTI/GRAVITY observation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d9626185ca0d2bc1dc3b6313e4c2210
https://doi.org/10.3847/2515-5172/acd005
https://doi.org/10.3847/2515-5172/acd005
Publikováno v:
Research Notes of the AAS. 7:78
Further discoveries and detailed studies of close binaries of intermediate-mass stars in hierarchical triple systems are needed in order to understand their formation. Here we report the discovery of a 0.82M ⊙ companion to the intermediate mass spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca54dec28f0be98313b57efeec4589a3
https://doi.org/10.3847/2515-5172/accf16
https://doi.org/10.3847/2515-5172/accf16
Publikováno v:
Research Notes of the AAS. 7:65
In spite of them being the main progenitors of white dwarfs, the multiplicity of intermediate mass stars is relatively less explored when compared to solar-type and O-type stars. Here we report the discovery of a new companion to the nearby 2.43M ⊙
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4496adcd0891e6c2938dde249366826
https://doi.org/10.3847/2515-5172/accb5c
https://doi.org/10.3847/2515-5172/accb5c
Publikováno v:
Research Notes of the AAS. 7:66
Our knowledge about the multiplicity of intermediate mass A- and B-type stars is still incomplete, in particular for high (3+) multiplicity systems. Here we report the discovery of a new companion to the nearby roAp star HIP 47145 = HR 3831 with a K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::490e8edc28efc96e79d9e2e2f5e2f55e
https://doi.org/10.3847/2515-5172/accb5d
https://doi.org/10.3847/2515-5172/accb5d
Autor:
Wolfgang Brandner, A. Jiménez-Rosales, Mark Gurwell, Stefan Hippler, Christian Straubmeier, Th. Henning, Fiona A. Harrison, Jason Dexter, N. M. Förster Schreiber, F. Vincent, Pierre Kervella, Daryl Haggard, S. Yazici, Silvia Scheithauer, Oliver Pfuhl, Y. Dallilar, T. Taro Shimizu, Idel Waisberg, Odele Straub, K. Foster, Felix Widmann, Sera Markoff, Dieter Lutz, J.-B. Le Bouquin, M. Bauböck, Matthew Horrobin, Yann Clénet, P. T. de Zeeuw, Gabriele Ghisellini, Howard A. Smith, Frederick K. Baganoff, Daniel Stern, Thibaut Paumard, Eckhard Sturm, Ric Davies, M. Nowak, Andreas Eckart, Andreas Kaufer, Sebastian Rabien, Laurent Jocou, Paulo J. V. Garcia, Ekkehard Wieprecht, Reinhard Genzel, Jinyi Shangguan, G. Rodríguez-Coira, Patrick Lowrance, C. J. Hailey, Thomas Ott, S. Zhang, A. Drescher, G. Ponti, Giovanni G. Fazio, Steven P. Willner, S. D. von Fellenberg, Linda J. Tacconi, Maryam Habibi, H. Bonnet, Julien Woillez, V. Lapeyrère, Sylvestre Lacour, António Amorim, Erich Wiezorrek, Xavier Haubois, Guy Perrin, J. Neilsen, K. Mori, Eric Gendron, Frank Eisenhauer, G. Heißel, Pierre Léna, Joseph L. Hora, Karine Perraut, Charles F. Gammie, Feng Gao, G. Witzel, Gérard Zins, Mark Morris, André Young, Julia Stadler, Jean-Phillipe Berger, Hope Boyce, Stefan Gillessen, Lieselotte Jochum, Roberto Abuter
Publikováno v:
Astronomy and Astrophysics, 654, 1-18
Astronomy & Astrophysics, 654:A22. EDP Sciences
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A22. ⟨10.1051/0004-6361/202140981⟩
Astronomy & Astrophysics
Astronomy & Astrophysics, 654:A22. EDP Sciences
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 654, pp.A22. ⟨10.1051/0004-6361/202140981⟩
Astronomy & Astrophysics
We report the time-resolved spectral analysis of a bright near-infrared and moderate X-ray flare of Sgr A*. We obtained light curves in the $M$-, $K$-, and $H$-bands in the mid- and near-infrared and in the $2-8~\mathrm{keV}$ and $2-70~\mathrm{keV}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b318bce0dbccbb512624716eecc8f67
https://doi.org/10.1051/0004-6361/202140981
https://doi.org/10.1051/0004-6361/202140981
Autor:
Christian Straubmeier, Stefan Hippler, Th. Henning, Feng Gao, Gérard Zins, Maryam Habibi, Linda J. Tacconi, Oliver Pfuhl, V. Lapeyrère, Xavier Haubois, Guy Perrin, A. Jiménez-Rosales, Felix Widmann, G. Heißel, António Amorim, Stefan Gillessen, Yann Clénet, P. T. de Zeeuw, H. Bonnet, Jason Dexter, Paulo J. V. Garcia, Julien Woillez, Ric Davies, Lieselotte Jochum, Eric Gendron, G. Rodríguez-Coira, Eckhard Sturm, Laurent Jocou, Jinyi Shangguan, S. Yazici, T. Taro Shimizu, Thibaut Paumard, M. Nowak, M. Bauböck, Karine Perraut, Reinhard Genzel, N. M. Förster Schreiber, Wolfgang Brandner, Matthew Horrobin, Julia Stadler, Thomas Ott, Idel Waisberg, A. Drescher, S. von Fellenberg, Sebastian Rabien, Ekkehard Wieprecht, F. Vincent, Pierre Kervella, Jean-Philippe Berger, Odele Straub, Dieter Lutz, J.-B. Le Bouquin, Sylvestre Lacour, Silvia Scheithauer, Y. Dallilar, Andreas Kaufer, Frank Eisenhauer, Pierre Léna, Erich Wiezorrek, Roberto Abuter
Publikováno v:
Astron.Astrophys.
Astron.Astrophys., 2021, 645, pp.A127. ⟨10.1051/0004-6361/202039544⟩
Astronomy and Astrophysics, 645, 1-10
Astron.Astrophys., 2021, 645, pp.A127. ⟨10.1051/0004-6361/202039544⟩
Astronomy and Astrophysics, 645, 1-10
International audience; The spin of the supermassive black hole that resides at the Galactic Center can, in principle, be measured by accurate measurements of the orbits of stars that are much closer to Sgr A* than S2, the orbit of which recently pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15af2614a73b2322746873c993267b30
https://doi.org/10.1051/0004-6361/202039544
https://doi.org/10.1051/0004-6361/202039544
Autor:
Karine Perraut, Xavier Haubois, Jason Dexter, Christian Straubmeier, Th. Henning, F. H. Vincent, Linda J. Tacconi, Eckhard Sturm, Idel Waisberg, Stefan Hippler, Guy Perrin, Vincent Lapeyrere, J. Sanchez-Bermudez, Felix Widmann, Andreas Kaufer, Thomas Ott, A. Drescher, O. Pfuhl, Julien Woillez, G. Rodríguez-Coira, Laurent Jocou, Jean-Philippe Berger, Eric Gendron, Lieselotte Jochum, Gérard Zins, S. von Fellenberg, Paulo J. V. Garcia, Sylvestre Lacour, Stefan Gillessen, M. Nowak, N. M. Förster Schreiber, Julia Stadler, Matthew Horrobin, Feng Gao, António Amorim, Frank Eisenhauer, Pierre Léna, Odele Straub, J.-B. Le Bouquin, Erich Wiezorrek, M. Habibi, Reinhard Genzel, Silvia Scheithauer, H. Bonnet, Thibaut Paumard, Pierre Kervella, A. Jiménez-Rosales, Andreas Eckart, Ekkehard Wieprecht, S. Yazici, T. Taro Shimizu, M. Bauböck, Roberto Abuter, Jinyi Shangguan, Wolfgang Brandner, Yann Clénet, P. T. de Zeeuw
Publikováno v:
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 651, pp.A37. ⟨10.1051/0004-6361/202039501⟩
Astronomy and Astrophysics-A&A, 2021, 651, pp.A37. ⟨10.1051/0004-6361/202039501⟩
Astronomy and Astrophysics, 651, 1-12
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 651, pp.A37. ⟨10.1051/0004-6361/202039501⟩
Astronomy and Astrophysics-A&A, 2021, 651, pp.A37. ⟨10.1051/0004-6361/202039501⟩
Astronomy and Astrophysics, 651, 1-12
GCIRS 7, the brightest star in the Galactic central parsec, formed $6\pm2$ Myr ago together with dozens of massive stars in a disk orbiting the central black-hole. It has been argued that GCIRS 7 is a pulsating body, on the basis of photometric varia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88d1f3ad1b0cac083059c46b95e58999
https://hal.archives-ouvertes.fr/hal-03285692/document
https://hal.archives-ouvertes.fr/hal-03285692/document