Zobrazeno 1 - 10
of 34 893
pro vyhledávání: '"A. Eckart"'
Autor:
K. I. Caputi, P. Rinaldi, E. Iani, P. G. Pérez-González, G. Östlin, L. Colina, T. R. Greve, H. U. Nørgaard-Nielsen, G. S. Wright, J. Álvarez-Márquez, A. Eckart, J. Hjorth, A. Labiano, O. Le Fèvre, F. Walter, P. van der Werf, L. Boogaard, L. Costantin, A. Crespo Gómez, S. Gillman, I. Jermann, D. Langeroodi, J. Melinder, F. Peissker, M. Güdel, Th. Henning, P. O. Lagage, T. P. Ray
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 2, p 159 (2024)
We investigate the properties of strong (H β + [O iii ]) emitters before and after the end of the “Epoch of Reionization” from z = 8 to z = 5.5. We make use of ultradeep JWST / NIRCam imaging in the parallel field (P2) of the MIRI Deep Imaging S
Externí odkaz:
https://doaj.org/article/5319802472844334b1516c6b4d57f021
Autor:
P. Rinaldi, K. I. Caputi, E. Iani, L. Costantin, S. Gillman, P. G. Perez Gonzalez, G. Östlin, L. Colina, T. R. Greve, H. U. Nørgard-Nielsen, G. S. Wright, J. Álvarez-Márquez, A. Eckart, M. García-Marín, J. Hjorth, O. Ilbert, S. Kendrew, A. Labiano, O. Le Fèvre, J. Pye, T. Tikkanen, F. Walter, P. van der Werf, M. Ward, M. Annunziatella, R. Azzollini, A. Bik, L. Boogaard, S. E. I. Bosman, A. Crespo Gómez, I. Jermann, D. Langeroodi, J. Melinder, R. A. Meyer, T. Moutard, F. Peissker, E. van Dishoeck, M. Güdel, Th. Henning, P.-O. Lagage, T. Ray, B. Vandenbussche, C. Waelkens, Pratika Dayal
Publikováno v:
The Astrophysical Journal, Vol 969, Iss 1, p 12 (2024)
By using an ultradeep JWST/MIRI image at 5.6 μ m in the Hubble eXtreme Deep Field, we constrain the role of strong H α emitters (HAEs) during “cosmic reionization” at z ≃ 7–8. Our sample of HAEs is comprised of young (
Externí odkaz:
https://doaj.org/article/ed1420ab6cf5413f93017aa975eb17b4
Autor:
William O. Balmer, L. Pueyo, S. Lacour, J. J. Wang, T. Stolker, J. Kammerer, N. Pourré, M. Nowak, E. Rickman, S. Blunt, A. Sivaramakrishnan, D. Sing, K. Wagner, G.-D. Marleau, A.-M. Lagrange, R. Abuter, A. Amorim, R. Asensio-Torres, J.-P. Berger, H. Beust, A. Boccaletti, A. Bohn, M. Bonnefoy, H. Bonnet, M. S. Bordoni, G. Bourdarot, W. Brandner, F. Cantalloube, P. Caselli, B. Charnay, G. Chauvin, A. Chavez, E. Choquet, V. Christiaens, Y. Clénet, V. Coudé du Foresto, A. Cridland, R. Davies, R. Dembet, A. Drescher, G. Duvert, A. Eckart, F. Eisenhauer, N. M. Förster Schreiber, P. Garcia, R. Garcia Lopez, E. Gendron, R. Genzel, S. Gillessen, J. H. Girard, S. Grant, X. Haubois, G. Heißel, Th. Henning, S. Hinkley, S. Hippler, M. Houllé, Z. Hubert, L. Jocou, M. Keppler, P. Kervella, L. Kreidberg, N. T. Kurtovic, V. Lapeyrère, J.-B. Le Bouquin, P. Léna, D. Lutz, A.-L. Maire, F. Mang, A. Mérand, P. Mollière, C. Mordasini, D. Mouillet, E. Nasedkin, T. Ott, G. P. P. L. Otten, C. Paladini, T. Paumard, K. Perraut, G. Perrin, O. Pfuhl, D. C. Ribeiro, L. Rodet, Z. Rustamkulov, J. Shangguan, T. Shimizu, C. Straubmeier, E. Sturm, L. J. Tacconi, A. Vigan, F. Vincent, K. Ward-Duong, F. Widmann, T. Winterhalder, J. Woillez, S. Yazici, the GRAVITY Collaboration
Publikováno v:
The Astronomical Journal, Vol 167, Iss 2, p 64 (2024)
Young, low-mass brown dwarfs orbiting early-type stars, with low mass ratios ( q ≲ 0.01), appear to be intrinsically rare and present a formation dilemma: could a handful of these objects be the highest-mass outcomes of “planetary” formation ch
Externí odkaz:
https://doaj.org/article/e58c7dfdceea45c09db0e77485b4e45c
Context: The existence of intermediate-mass black holes (IMBHs) still poses challenges to theoretical and observational astronomers. Several candidates have been proposed, including the one in the IRS13 cluster in the Galactic centre, where the evide
Externí odkaz:
http://arxiv.org/abs/2410.14541
Autor:
Xuan, Jerry W., Mérand, A., Thompson, W., Zhang, Y., Lacour, S., Blakely, D., Mawet, D., Oppenheimer, R., Kammerer, J., Batygin, K., Sanghi, A., Wang, J., Ruffio, J. -B., Liu, M. C., Knutson, H., Brandner, W., Burgasser, A., Rickman, E., Bowens-Rubin, R., Salama, M., Balmer, W., Blunt, S., Bourdarot, G., Caselli, P., Chauvin, G., Davies, R., Drescher, A., Eckart, A., Eisenhauer, F., Fabricius, M., Feuchtgruber, H., Finger, G., Schreiber, N. M. Förster, Garcia, P., Genzel, R., Gillessen, S., Grant, S., Hartl, M., Haußmann, F., Henning, T., Hinkley, S., Hönig, S. F., Horrobin, M., Houllé, M., Janson, M., Kervella, P., Kral, Q., Kreidberg, L., Bouquin, J. -B. Le, Lutz, D., Mang, F., Marleau, G. -D., Millour, F., More, N., Nowak, M., Ott, T., Otten, G., Paumard, T., Rabien, S., Rau, C., Ribeiro, D. C., Bordoni, M. Sadun, Sauter, J., Shangguan, J., Shimizu, T. T., Sykes, C., Soulain, A., Spezzano, S., Straubmeier, C., Stolker, T., Sturm, E., Subroweit, M., Tacconi, L. J., van Dishoeck, E. F., Vigan, A., Widmann, F., Wieprecht, E., Winterhalder, T. O., Woillez, J.
Owing to their similarities with giant exoplanets, brown dwarf companions of stars provide insights into the fundamental processes of planet formation and evolution. From their orbits, several brown dwarf companions are found to be more massive than
Externí odkaz:
http://arxiv.org/abs/2410.11953
Autor:
Wu, Zexuan, Dong, Subo, Mérand, A., Kochanek, Christopher S., Mróz, Przemek, Shangguan, Jinyi, Christie, Grant, Tan, Thiam-Guan, Bensby, Thomas, Bland-Hawthorn, Joss, Buder, Sven, Eisenhauer, Frank, Gould, Andrew P., Kos, Janez, Natusch, Tim, Sharma, Sanjib, Udalski, Andrzej, Woillez, J., Buckley, David A. H., Thompson, I. B., Dayem, Karim Abd El, Alecian, Evelyne, Babusiaux, Carine, Berdeu, Anthony, Berger, Jean-Philippe, Bourdarot, Guillaume, Brandner, Wolfgang, Clavel, Maica, Davies, Richard I., Defrère, Denis, Dougados, Catherine, Drescher, Antonia, Eckart, Andreas, Fabricius, Maximilian, Feuchtgruber, Helmut, Schreiber, Natascha M. Förster, Garcia, Paulo, Genzel, Reinhard, Gillessen, Stefan, Heißel, Gernot, Hönig, Sebastian, Houlle, Mathis, Kervella, Pierre, Kreidberg, Laura, Lacour, Sylvestre, Lai, Olivier, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Lopez, Bruno, Lutz, Dieter, Mang, Felix, Millour, Florentin, Montargès, Miguel, Nowacki, Hugo, Nowak, Mathias, Ott, Thomas, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Petrucci, Pierre-Olivier, Pourre, Nicolas, Rabien, Sebastian, Ribeiro, Diogo C., Robbe-Dubois, Sylvie, Bordoni, Matteo Sadun, Santos, Daryl, Sauter, Jonas, Scigliuto, Jules, Shimizu, Taro T., Straubmeier, Christian, Sturm, Eckhard, Subroweit, Matthias, Sykes, Calvin, Tacconi, Linda, Vincent, Frédéric, Widmann, Felix
We resolve the multiple images of the binary-lens microlensing event ASASSN-22av using the GRAVITY instrument of the Very Large Telescope Interferometer (VLTI). The light curves show weak binary perturbations, complicating the analysis, but the joint
Externí odkaz:
http://arxiv.org/abs/2409.13015
Autor:
The GRAVITY Collaboration, Dayem, Karim Abd El, Abuter, Roberto, Aimar, Nicolas, Seoane, Pau Amaro, Amorim, Antonio, Beck, Julie, Berger, Jean Philippe, Bonnet, Henri, Bourdarot, Guillaume, Brandner, Wolfgang, Cardoso, Vitor, Dolcetta, Roberto Capuzzo, Clénet, Yann, Davies, Ric, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Eisenhauer, Frank, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Foschi, Arianna, Gao, Feng, Garcia, Paulo, Gendron, Eric, Genzel, Reinhard, Gillessen, Stefan, Hartl, Michael, Haubois, Xavier, Haussman, Frank, Heißel, Gernot, Hennig, Thomas, Hippler, Stefan, Horrobin, Matthew, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Lacour, Sylvestre, Lapeyrère, Vincent, Bouquin, Jean B. Le, Léna, Pierre, Lutz, Dieter, Mang, Felix, More, Nikhil, Ott, Thomas, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Pfuhl, Oliver, Rabien, Sebastien, Ribeiro, Diogo C., Bordoni, Matteo Sadun, Scheithauer, Silvia, Shangguan, Jinyi, Shimizu, Taro, Stadler, Julia, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Tacconi, Linda J., Urso, Irene, Vincent, Frederic, Von Fellenberg, Sebastiano D., Widmann, Felix, Wieprecht, Ekkehard, Woillez, Julien, Zhang, Fupeng
Studying the orbital motion of stars around Sagittarius A* in the Galactic Center provides a unique opportunity to probe the gravitational potential near the supermassive black hole at the heart of our Galaxy. Interferometric data obtained with the G
Externí odkaz:
http://arxiv.org/abs/2409.12261
Autor:
Fairchild, Alexander J., Hell, Natalie, Beiersdorfer, Peter, Brown, Gregory V., Eckart, Megan E., Hahn, Michael, Savin, Daniel W.
Solar physicists routinely utilize observations of Ar-like Fe IX and Cl-like Fe X emission to study a variety of solar structures. However, unidentified lines exist in the Fe IX and Fe X spectra, greatly impeding the spectroscopic diagnostic potentia
Externí odkaz:
http://arxiv.org/abs/2408.14454
Autor:
Yang, Tao, Huang, Zhipeng, Sleziona, Stephan, Hasselbrink, Eckart, Kratzer, Peter, Schleberger, Marika, Campen, R. Kramer, Tong, Yujin
To take advantage of the exceptional properties of atomically thin transition metal dichalcogenides (TMDC) for advanced devices and catalysts, integration with metallic surfaces is an efficacious approach for facilitating charge carrier injection and
Externí odkaz:
http://arxiv.org/abs/2408.13671
Autor:
Wojtczak, J. A., Tessore, B., Labadie, L., Perraut, K., Bouvier, J., Dougados, C., Nowacki, H., Soulain, A., Alécian, E., Pantolmos, G., Ferreira, J., Straubmeier, C., Eckart, A.
Aims: Our aim is to build upon the analysis presented in our previous work by attempting to match the observational data obtained with VLTI GRAVITY for RU Lup in 2021 with an expanded radiative transfer model of Br$\gamma$ emission. Specifically, we
Externí odkaz:
http://arxiv.org/abs/2408.03186