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1. The GRAVITY+ Project: Towards All-sky, Faint-Science, High-Contrast Near-Infrared Interferometry at the VLTI

Author

Collaboration, GRAVITY, Abuter, Roberto, Alarcon, Patricio, Allouche, Fatme, Amorim, Antonio, Bailet, Christophe, Bedigan, Helen, Berdeu, Anthony, Berger, Jean-Philippe, Berio, Philippe, Bigioli, Azzurra, Blaho, Richard, Boebion, Olivier, Bolzer, Marie-Lena, Bonnet, Henri, Bourdarot, Guillaume, Bourget, Pierre, Brandner, Wolfgang, Cardenas, Cesar, Conzelmann, Ralf, Comin, Mauro, Clénet, Yann, Courtney-Barrer, Benjamin, Dallilar, Yigit, Davies, Ric, Defrère, Denis, Delboulbé, Alain, Delplancke-Ströbele, Françoise, Dembet, Roderick, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Édouard, Clemence, Eisenhauer, Frank, Fabricius, Maximilian, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Fuenteseca, Eloy, Garcia, Enrique, Garcia, Paulo, Gao, Feng, Gendron, Eric, Genzel, Reinhard, Gil, Juan Pablo, Gillessen, Stefan, Gomes, Tiago, Gonté, Frédéric, Gouvret, Carole, Guajardo, Patricia, Guidolin, Ivan, Guieu, Sylvain, Guzmann, Ronald, Hackenberg, Wolfgang, Haddad, Nicolas, Hartl, Michael, Haubois, Xavier, Haußmann, Frank, Heißel, Gernot, Henning, Thomas, Hippler, Stefan, Hönig, Sebastian, Horrobin, Matthew, Hubin, Norbert, Jacqmart, Estelle, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Kirchbauer, Jean-Paul, Kolb, Johan, Korhonen, Heidi, Kreidberg, Laura, Krempl, Peter, Lacour, Sylvestre, Lagarde, Stephane, Lai, Olivier, Lapeyrère, Vincent, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Léna, Pierre, Lewis, Steffan, Lutz, Dieter, Magnard, Yves, Mang, Felix, Marcotto, Aurelie, Maurel, Didier, Mérand, Antoine, Millour, Florentin, More, Nikhil, Nowack, Hugo, Nowak, Matthias, Oberti, Sylvain, Olivares, Francisco, Ott, Thomas, Pallanca, Laurent, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Pfuhl, Oliver, Pourré, Nicolas, Rabien, Sebastian, Rau, Christian, Riquelme, Miguel, Robbe-Dubois, Sylvie, Rochat, Sylvain, Salman, Muhammad, Scherbarth, Malte, Schöller, Markus, Schubert, Joseph, Schuhler, Nicolas, Shangguan, Jinyi, Shchekaturov, Pavel, Shimizu, Taro, Scheithauer, Silvia, Sevin, Arnaud, Soenke, Christian, Soulez, Ferreol, Spang, Alain, Stadler, Eric, Straubmeier, Christian, Sturm, Eckhard, Sykes, Calvin, Tacconi, Linda, Tischer, Helmut, Tristram, Konrad, Vincent, Frédéric, von Fellenberg, Sebastiano, Uysal, Sinem, Widmann, Felix, Wieprecht, Ekkehard, Wiezorrek, Erich, Woillez, Julien, Yazıcı, Şenol, and Zins, Gérard

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The GRAVITY instrument has been revolutionary for near-infrared interferometry by pushing sensitivity and precision to previously unknown limits. With the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) in GRAVITY+, these limits will be pushed even further, with vastly improved sky coverage, as well as faint-science and high-contrast capabilities. This upgrade includes the implementation of wide-field off-axis fringe-tracking, new adaptive optics systems on all Unit Telescopes, and laser guide stars in an upgraded facility. GRAVITY+ will open up the sky to the measurement of black hole masses across cosmic time in hundreds of active galactic nuclei, use the faint stars in the Galactic centre to probe General Relativity, and enable the characterisation of dozens of young exoplanets to study their formation, bearing the promise of another scientific revolution to come at the VLTI., Comment: Published in the ESO Messenger

Published
2023
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2. Towards a Better Understanding of OPD Limitations for Higher Sensitivity and Contrast at the VLTI

Author

Courtney-Barrer, Benjamin, Woillez, Julien, Laugier, Romain, Bigioli, Azzurra, Schuhler, Nicolas, Guajardo, Patricia, Lizana, Vicente, Behara, Natalię, Eisenhauer, Frank, Ireland, Michael, Haubois, Xavier, and Defrère, Denis

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Precise control of the optical path differences (OPD) in the Very Large Telescope Interferometer (VLTI) was critical for the characterization of the black hole at the center of our Galaxy - leading to the 2020 Nobel prize in physics. There is now significant effort to push these OPD limits even further, in-particular achieving 100nm OPD RMS on the 8m unit telescopes (UT's) to allow higher contrast and sensitivity at the VLTI. This work calculated the theoretical atmospheric OPD limit of the VLTI as 5nm and 15nm RMS, with current levels around 200nm and 100nm RMS for the UT and 1.8m auxillary telescopes (AT's) respectively, when using bright targets in good atmospheric conditions. We find experimental evidence for the $f^{-17/3}$ power law theoretically predicted from the effect of telescope filtering in the case of the ATs which is not currently observed for the UT's. Fitting a series of vibrating mirrors modelled as dampened harmonic oscillators, we were able to model the UT OPD PSD of the gravity fringe tracker to $<1nm/\sqrt{Hz}$ RMSE up to 100Hz, which could adequately explain a hidden $f^{-17/3}$ power law on the UTs. Vibration frequencies in the range of 60-90Hz and also 40-50Hz were found to generally dominate the closed loop OPD residuals of Gravity. Cross correlating accelerometer with Gravity data, it was found that strong contributions in the 40-50Hz range are coming from the M1-M3 mirrors, while a significant portion of power from the 60-100Hz contributions are likely coming from between the M4-M10. From the vibrating mirror model it was shown that achieving sub 100nm OPD RMS for particular baselines (that have OPD$\sim$200nm RMS) required removing nearly all vibration sources below 100Hz.

Published
2022
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3. Multiple Star Systems in the Orion Nebula

Author

GRAVITY collaboration, Karl, Martina, Pfuhl, Oliver, Eisenhauer, Frank, Genzel, Reinhard, Grellmann, Rebekka, Habibi, Maryam, Abuter, Roberto, Accardo, Matteo, Amorim, António, Anugu, Narsireddy, Ávila, Gerardo, Benisty, Myriam, Berger, Jean-Philippe, Bland, Nicolas, Bonnet, Henri, Bourget, Pierre, Brandner, Wolfgang, Brast, Roland, Buron, Alexander, Garatti, Alessio Caratti o, Chapron, Frédéric, Clénet, Yann, Collin, Claude, Foresto, Vincent Coudé du, de Wit, Willem-Jan, de Zeeuw, Tim, Deen, Casey, Delplancke-Ströbele, Françoise, Dembet, Roderick, Derie, Frédéric, Dexter, Jason, Duvert, Gilles, Ebert, Monica, Eckart, Andreas, Esselborn, Michael, Fédou, Pierre, Finger, Gert, Garcia, Paulo, Dabo, Cesar Enrique Garcia, Lopez, Rebeca Garcia, Gao, Feng, Gandron, Éric, Gillessen, Stefan, Gonté, Frédéric, Gordo, Paulo, Grözinger, Ulrich, Guajardo, Patricia, Guieu, Sylvain, Haguenauer, Pierre, Hans, Oliver, Haubois, Xavier, Haug, Marcus, Haußmann, Frank, Henning, Thomas, Hippler, Stefan, Horrobin, Matthew, Huber, Armin, Hubert, Zoltan, Hubin, Norbert, Hummel, Christian A., Jakob, Gerd, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kellner, Stefan, Kandrew, Sarah, Kern, Lothar, Kervella, Pierre, Kiekebusch, Mario, Klein, Ralf, Köhler, Rainer, Kolb, Johan, Kulas, Martin, Lacour, Sylvestre, Lapeyrère, Vincent, Lazareff, Bernard, Bouquin, Jean-Baptiste Le, Léna, Pierre, Lenzen, Rainer, Lévêque, Samuel, Lin, Chien-Cheng, Lippa, Magdalena, Magnard, Yves, Mehrgan, Leander, Mérand, Antoine, Moulin, Thibaut, Müller, Eric, Müller, Friedrich, Neumann, Udo, Oberti, Sylvain, Ott, Thomas, Pallanca, Laurent, Panduro, Johana, Pasquini, Luca, Paumard, Thibaut, Percheron, Isabelle, Perraut, Karine, Perrin, Guy, Pflüger, Andreas, Duc, Thanh Phan, Plewa, Philipp M., Popovic, Dan, Rabien, Sebastian, Ramírez, Andrés, Ramos, Jose, Rau, Christian, Riquelme, Miguel, Rodríguez-Coira, Gustavo, Rohloff, Ralf-Rainer, Rosales, Alejandra, Rousset, Gérard, Sanchez-Bermudez, Joel, Scheithauer, Silvia, Schöller, Markus, Schuhler, Nicolas, Spyromilio, Jason, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Suarez, Marcos, Tristram, Konrad R. W., Ventura, Noel, Vincent, Frédéric, Waisberg, Idel, Wank, Imke, Widmann, Felix, Wieprecht, Ekkehard, Wiest, Michael, Wiezorrek, Erich, Wittkowski, Markus, Woillez, Julien, Wolff, Burkhard, Yazici, Senol, Ziegler, Denis, and Zins, Gérard

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

This work presents an interferometric study of the massive-binary fraction in the Orion Trapezium Cluster with the recently comissioned GRAVITY instrument. We observe a total of 16 stars of mainly OB spectral type. We find three previously unknown companions for $\theta ^1$ Ori B, $\theta ^2$ Ori B, and $\theta ^2$ Ori C. We determine a separation for the previously suspected companion of NU Ori. We confirm four companions for $\theta ^1$ Ori A, $\theta ^1$ Ori C, $\theta ^1$ Ori D, and $\theta ^2$ Ori A, all with substantially improved astrometry and photometric mass estimates. We refine the orbit of the eccentric high-mass binary $\theta ^1$ Ori C and we are able to derive a new orbit for $\theta ^1$ Ori D. We find a system mass of 21.7 $M_{\odot}$ and a period of $53$ days. Together with other previously detected companions seen in spectroscopy or direct imaging, eleven of the 16 high-mass stars are multiple systems. We obtain a total number of 22 companions with separations up to 600 AU. The companion fraction of the early B and O stars in our sample is about 2, significantly higher than in earlier studies of mostly OB associations. The separation distribution hints towards a bimodality. Such a bimodality has been previously found in A stars, but rarely in OB binaries, which up to this point have been assumed to be mostly compact with a tail of wider companions. We also do not find a substantial population of equal-mass binaries. The observed distribution of mass ratios declines steeply with mass, and like the direct star counts, indicates that our companions follow a standard power law initial mass function. Again, this is in contrast to earlier findings of flat mass ratio distributions in OB associations. We exclude collision as a dominant formation mechanism but find no clear preference for core accretion or competitive accretion., Comment: Accepted for publication in A&A

Published
2018
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5. VLTI status update: a decade of operations and beyond

Author

Merand, Antoine, Abuter, Roberto, Aller-Carpentier, Emmanuel, Andolfato, Luigi, Alonso, Jaime, Berger, Jean-Philippe, Blanchard, Guillaume, Boffin, Henri, Bourget, Pierre, Bristow, Paul, Cid, Claudia, de Wit, Willem-Jan, del Valle, Diego, Delplancke-Stroebele, Franccoise, Derie, Frederic, Faundez, Lorena, Ertel, Steve, Grellmann, Rebekka, Gitton, Philippe, Glindemann, Andreas, Guajardo, Patricia, Guieu, Sylvain, Guisard, Stephane, Guniat, Serge, Haguenauer, Pierre, Herrera, Christian, Hummel, Christian, La Fuente, Carlos, Lopez, Marcelo, Mardones, Pedro, Morel, Sebastien, Mueller, Andre, Percheron, Isabelle, Duc, Than Phan, Pino, Andres, Poupar, Sebastien, Pozna, Eszter, Ramirez, Andres, Rengaswamy, Sridharan, Rivas, Lionel, Rivinius, Thomas, Segovia, Alex, Schmid, Christian, Schoeller, Markus, Schuhler, Nicolas, Woillez, Julien, and Wittkowski, Markus

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We present the latest update of the European Southern Observatory's Very Large Telescope interferometer (VLTI). The operations of VLTI have greatly improved in the past years: reduction of the execution time; better offering of telescopes configurations; improvements on AMBER limiting magnitudes; study of polarization effects and control for single mode fibres; fringe tracking real time data, etc. We present some of these improvements and also quantify the operational improvements using a performance metric. We take the opportunity of the first decade of operations to reflect on the VLTI community which is analyzed quantitatively and qualitatively. Finally, we present briefly the preparatory work for the arrival of the second generation instruments GRAVITY and MATISSE., Comment: 10 pages, 7 figures, Proceedings of the SPIE, 9146-19

Published
2014
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8. The GRAVITY+ Project: Towards All-sky, Faint-Science, High-Contrast Near-Infrared Interferometry at the VLTI

Author

Collaboration, GRAVITY+, Abuter, Roberto, Alarcon, Patricio, Allouche, Fatme, Amorim, Antonio, Bailet, Christophe, Bedigan, Helen, Berdeu, Anthony, Berger, Jean-Philippe, Berio, Philippe, Bigioli, Azzurra, Blaho, Richard, Boebion, Olivier, Bolzer, Marie-Lena, Bonnet, Henri, Bourdarot, Guillaume, Bourget, Pierre, Brandner, Wolfgang, Cardenas, Cesar, Conzelmann, Ralf, Comin, Mauro, Clénet, Yann, Courtney-Barrer, Benjamin, Dallilar, Yigit, Davies, Ric, Defrère, Denis, Delboulbé, Alain, Delplancke-Ströbele, Françoise, Dembet, Roderick, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Édouard, Clemence, Eisenhauer, Frank, Fabricius, Maximilian, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Fuenteseca, Eloy, Garcia, Enrique, Garcia, Paulo, Gao, Feng, Gendron, Eric, Genzel, Reinhard, Gil, Juan Pablo, Gillessen, Stefan, Gomes, Tiago, Gonté, Frédéric, Gouvret, Carole, Guajardo, Patricia, Guidolin, Ivan, Guieu, Sylvain, Guzmann, Ronald, Hackenberg, Wolfgang, Haddad, Nicolas, Hartl, Michael, Haubois, Xavier, Haußmann, Frank, Heißel, Gernot, Henning, Thomas, Hippler, Stefan, Hönig, Sebastian, Horrobin, Matthew, Hubin, Norbert, Jacqmart, Estelle, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Kirchbauer, Jean-Paul, Kolb, Johan, Korhonen, Heidi, Kreidberg, Laura, Krempl, Peter, Lacour, Sylvestre, Lagarde, Stephane, Lai, Olivier, Lapeyrère, Vincent, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Léna, Pierre, Lewis, Steffan, Lutz, Dieter, Magnard, Yves, Mang, Felix, Marcotto, Aurelie, Maurel, Didier, Mérand, Antoine, Millour, Florentin, More, Nikhil, Nowack, Hugo, Nowak, Matthias, Oberti, Sylvain, Olivares, Francisco, Ott, Thomas, Pallanca, Laurent, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Pfuhl, Oliver, Pourré, Nicolas, Rabien, Sebastian, Rau, Christian, Riquelme, Miguel, Robbe-Dubois, Sylvie, Rochat, Sylvain, Salman, Muhammad, Scherbarth, Malte, Schöller, Markus, Schubert, Joseph, Schuhler, Nicolas, Shangguan, Jinyi, Shchekaturov, Pavel, Shimizu, Taro, Scheithauer, Silvia, Sevin, Arnaud, Soenke, Christian, Soulez, Ferreol, Spang, Alain, Stadler, Eric, Straubmeier, Christian, Sturm, Eckhard, Sykes, Calvin, Tacconi, Linda, Tischer, Helmut, Tristram, Konrad, Vincent, Frédéric, von Fellenberg, Sebastiano, Uysal, Sinem, Widmann, Felix, Wieprecht, Ekkehard, Wiezorrek, Erich, Woillez, Julien, Yazıcı, Şenol, Zins, Gérard, Collaboration, GRAVITY+, Abuter, Roberto, Alarcon, Patricio, Allouche, Fatme, Amorim, Antonio, Bailet, Christophe, Bedigan, Helen, Berdeu, Anthony, Berger, Jean-Philippe, Berio, Philippe, Bigioli, Azzurra, Blaho, Richard, Boebion, Olivier, Bolzer, Marie-Lena, Bonnet, Henri, Bourdarot, Guillaume, Bourget, Pierre, Brandner, Wolfgang, Cardenas, Cesar, Conzelmann, Ralf, Comin, Mauro, Clénet, Yann, Courtney-Barrer, Benjamin, Dallilar, Yigit, Davies, Ric, Defrère, Denis, Delboulbé, Alain, Delplancke-Ströbele, Françoise, Dembet, Roderick, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Édouard, Clemence, Eisenhauer, Frank, Fabricius, Maximilian, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Fuenteseca, Eloy, Garcia, Enrique, Garcia, Paulo, Gao, Feng, Gendron, Eric, Genzel, Reinhard, Gil, Juan Pablo, Gillessen, Stefan, Gomes, Tiago, Gonté, Frédéric, Gouvret, Carole, Guajardo, Patricia, Guidolin, Ivan, Guieu, Sylvain, Guzmann, Ronald, Hackenberg, Wolfgang, Haddad, Nicolas, Hartl, Michael, Haubois, Xavier, Haußmann, Frank, Heißel, Gernot, Henning, Thomas, Hippler, Stefan, Hönig, Sebastian, Horrobin, Matthew, Hubin, Norbert, Jacqmart, Estelle, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Kirchbauer, Jean-Paul, Kolb, Johan, Korhonen, Heidi, Kreidberg, Laura, Krempl, Peter, Lacour, Sylvestre, Lagarde, Stephane, Lai, Olivier, Lapeyrère, Vincent, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Léna, Pierre, Lewis, Steffan, Lutz, Dieter, Magnard, Yves, Mang, Felix, Marcotto, Aurelie, Maurel, Didier, Mérand, Antoine, Millour, Florentin, More, Nikhil, Nowack, Hugo, Nowak, Matthias, Oberti, Sylvain, Olivares, Francisco, Ott, Thomas, Pallanca, Laurent, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Pfuhl, Oliver, Pourré, Nicolas, Rabien, Sebastian, Rau, Christian, Riquelme, Miguel, Robbe-Dubois, Sylvie, Rochat, Sylvain, Salman, Muhammad, Scherbarth, Malte, Schöller, Markus, Schubert, Joseph, Schuhler, Nicolas, Shangguan, Jinyi, Shchekaturov, Pavel, Shimizu, Taro, Scheithauer, Silvia, Sevin, Arnaud, Soenke, Christian, Soulez, Ferreol, Spang, Alain, Stadler, Eric, Straubmeier, Christian, Sturm, Eckhard, Sykes, Calvin, Tacconi, Linda, Tischer, Helmut, Tristram, Konrad, Vincent, Frédéric, von Fellenberg, Sebastiano, Uysal, Sinem, Widmann, Felix, Wieprecht, Ekkehard, Wiezorrek, Erich, Woillez, Julien, Yazıcı, Şenol, and Zins, Gérard

Abstract

The GRAVITY instrument has been revolutionary for near-infrared interferometry by pushing sensitivity and precision to previously unknown limits. With the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) in GRAVITY+, these limits will be pushed even further, with vastly improved sky coverage, as well as faint-science and high-contrast capabilities. This upgrade includes the implementation of wide-field off-axis fringe-tracking, new adaptive optics systems on all Unit Telescopes, and laser guide stars in an upgraded facility. GRAVITY+ will open up the sky to the measurement of black hole masses across cosmic time in hundreds of active galactic nuclei, use the faint stars in the Galactic centre to probe General Relativity, and enable the characterisation of dozens of young exoplanets to study their formation, bearing the promise of another scientific revolution to come at the VLTI., Comment: Published in the ESO Messenger

Published
2023
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10. VLTI status update

Author

Haubois, Xavier, primary, Mérand, Antoine, additional, Abuter, Roberto, additional, Araneda, Juan Pablo, additional, Bian, Fuyan, additional, Bourget, Pierre, additional, Bristow, Paul, additional, Burgos, Pablo, additional, Delplancke-Ströbele, Françoise, additional, Dembet, Roderick, additional, Gil, Juan Pablo, additional, Glindemann, Andreas, additional, Gonté, Frédéric, additional, Guajardo, Patricia, additional, Hubin, Norbert, additional, Hummel, Christian, additional, Korhonen, Heidi H., additional, Labdon, Aaron, additional, Kolb, Johann, additional, Kosmalski, Johan, additional, Lacour, Sylvestre, additional, Paladini, Claudia, additional, Pallanca, Laurent, additional, Pasquini, Luca, additional, Percheron, Isabelle, additional, Riquelme, Miguel, additional, Rivinius, Thomas, additional, Sani, Eleonora, additional, Schmidtobreick, Linda, additional, Scicluna, Peter, additional, Schoeller, Markus, additional, Schuhler, Nicolas, additional, Tristram, Konrad R. W., additional, Wittkowski, Markus, additional, Woillez, Julien, additional, and Zins, Gérard, additional

Published
2022
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11. Towards a better understanding of OPD contributors for higher sensitivity and contrast at the VLTI.

Author

Courtney-Barrer, Benjamin, primary, Woillez, Julien, additional, Laugier, Romain, additional, Bigioli, Azzurra, additional, Schuhler, Nicolas, additional, Guajardo, Patricia, additional, Lizana, Vicente, additional, Behara, Natalie, additional, Eisenhauer, Frank, additional, Ireland, Michael J., additional, Haubois, Xavier, additional, and Defrère, Denis, additional

Published
2022
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12. The GRAVITY+ Project: Towards All-sky, Faint-Science, High-Contrast Near-Infrared Interferometry at the VLTI

Author

Collaboration, GRAVITY+, Abuter, Roberto, Alarcon, Patricio, Allouche, Fatme, Amorim, Antonio, Bailet, Christophe, Bedigan, Helen, Berdeu, Anthony, Berger, Jean-Philippe, Berio, Philippe, Bigioli, Azzurra, Blaho, Richard, Boebion, Olivier, Bolzer, Marie-Lena, Bonnet, Henri, Bourdarot, Guillaume, Bourget, Pierre, Brandner, Wolfgang, Cardenas, Cesar, Conzelmann, Ralf, Comin, Mauro, Clénet, Yann, Courtney-Barrer, Benjamin, Dallilar, Yigit, Davies, Ric, Defrère, Denis, Delboulbé, Alain, Delplancke-Ströbele, Françoise, Dembet, Roderick, de Zeeuw, Tim, Drescher, Antonia, Eckart, Andreas, Édouard, Clemence, Eisenhauer, Frank, Fabricius, Maximilian, Feuchtgruber, Helmut, Finger, Gert, Schreiber, Natascha M. Förster, Fuenteseca, Eloy, Garcia, Enrique, Garcia, Paulo, Gao, Feng, Gendron, Eric, Genzel, Reinhard, Gil, Juan Pablo, Gillessen, Stefan, Gomes, Tiago, Gonté, Frédéric, Gouvret, Carole, Guajardo, Patricia, Guidolin, Ivan, Guieu, Sylvain, Guzmann, Ronald, Hackenberg, Wolfgang, Haddad, Nicolas, Hartl, Michael, Haubois, Xavier, Haußmann, Frank, Heißel, Gernot, Henning, Thomas, Hippler, Stefan, Hönig, Sebastian, Horrobin, Matthew, Hubin, Norbert, Jacqmart, Estelle, Jocou, Laurent, Kaufer, Andreas, Kervella, Pierre, Kirchbauer, Jean-Paul, Kolb, Johan, Korhonen, Heidi, Kreidberg, Laura, Krempl, Peter, Lacour, Sylvestre, Lagarde, Stephane, Lai, Olivier, Lapeyrère, Vincent, Laugier, Romain, Bouquin, Jean-Baptiste Le, Leftley, James, Léna, Pierre, Lewis, Steffan, Lutz, Dieter, Magnard, Yves, Mang, Felix, Marcotto, Aurelie, Maurel, Didier, Mérand, Antoine, Millour, Florentin, More, Nikhil, Nowack, Hugo, Nowak, Matthias, Oberti, Sylvain, Olivares, Francisco, Ott, Thomas, Pallanca, Laurent, Paumard, Thibaut, Perraut, Karine, Perrin, Guy, Petrov, Romain, Pfuhl, Oliver, Pourré, Nicolas, Rabien, Sebastian, Rau, Christian, Riquelme, Miguel, Robbe-Dubois, Sylvie, Rochat, Sylvain, Salman, Muhammad, Scherbarth, Malte, Schöller, Markus, Schubert, Joseph, Schuhler, Nicolas, Shangguan, Jinyi, Shchekaturov, Pavel, Shimizu, Taro, Scheithauer, Silvia, Sevin, Arnaud, Soenke, Christian, Soulez, Ferreol, Spang, Alain, Stadler, Eric, Straubmeier, Christian, Sturm, Eckhard, Sykes, Calvin, Tacconi, Linda, Tischer, Helmut, Tristram, Konrad, Vincent, Frédéric, von Fellenberg, Sebastiano, Uysal, Sinem, Widmann, Felix, Wieprecht, Ekkehard, Wiezorrek, Erich, Woillez, Julien, Yazıcı, Şenol, and Zins, Gérard

Subjects
FOS: Physical sciences, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The GRAVITY instrument has been revolutionary for near-infrared interferometry by pushing sensitivity and precision to previously unknown limits. With the upgrade of GRAVITY and the Very Large Telescope Interferometer (VLTI) in GRAVITY+, these limits will be pushed even further, with vastly improved sky coverage, as well as faint-science and high-contrast capabilities. This upgrade includes the implementation of wide-field off-axis fringe-tracking, new adaptive optics systems on all Unit Telescopes, and laser guide stars in an upgraded facility. GRAVITY+ will open up the sky to the measurement of black hole masses across cosmic time in hundreds of active galactic nuclei, use the faint stars in the Galactic centre to probe General Relativity, and enable the characterisation of dozens of young exoplanets to study their formation, bearing the promise of another scientific revolution to come at the VLTI., Comment: Published in the ESO Messenger

Published
2022
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14. GRAVITY upgrade with high-performance grisms with factor >2 enhanced throughput

Author

Yazici, Senol, primary, Sukegawa, Takashi, additional, Mayer, Martin, additional, Eisenhauer, Frank, additional, Okura, Yukinobu, additional, Perraut, Karine, additional, Jocou, Laurent, additional, Gillessen, Stefan, additional, Haussmann, Frank, additional, Buron, Alexander, additional, Huber, David, additional, Barl, Lothar, additional, Kravchenko, Kateryna, additional, Pfuhl, Oliver, additional, Lacour, Sylvestre, additional, Lapeyrere, Vincent, additional, Wiezorrek, Erich, additional, Ott, Thomas, additional, Paumard, Thibaut, additional, Shangguan, Jinyi, additional, Gao, Feng, additional, Straubmeier, Christian, additional, Guajardo, Patricia, additional, Riquelme, Miguel, additional, Pallanca, Laurent, additional, Genzel, Reinhard, additional, de Zeeuw, Tim, additional, Bauböck, Michael, additional, Habibi, Maryam, additional, Rau, Christian, additional, Jimenez Rosales, Alejandra, additional, Stadler, Julia, additional, Straub, Odele, additional, Sturm, Eckhard, additional, von Fellenberg, Sebastiano, additional, Widmann, Felix, additional, Wieprecht, Ekkehard, additional, Eckart, Andreas, additional, Perrin, Guy, additional, Amorim, Antonio, additional, Garcia, Paolo, additional, and Brandner, Wolfgang, additional

Published
2021
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15. VLTI status update: tapping into a powerful second-generation instrumentation

Author

Haubois, Xavier, primary, Abuter, Roberto, additional, Aller-Carpentier, Emmanuel, additional, Alonso, Jaime, additional, Beltran, Juan, additional, Berger, Jean-Philippe, additional, Bourget, Pierre, additional, Bristow, Paul, additional, Caniguante, Luis, additional, Chazelas, Bruno, additional, Cid, Claudia, additional, Conzelmann, Ralf D., additional, Cortes, Angela, additional, Darré, Pascaline, additional, Delboulbe, Alain, additional, Delplancke-Ströbele, Françoise, additional, Del Valle, Diego, additional, Dembet, Roderick, additional, Donoso, Reinaldo, additional, Dupuy, Christophe, additional, Egner, Sébastien E., additional, Eisenhauer, Frank, additional, Faundez, Lorena, additional, Fuenteseca, Eloy, additional, Frahm, Robert, additional, Gaytan, Daniel, additional, Gil, Juan Pablo, additional, Glindemann, Andreas, additional, Gonté, Frédéric Yves J., additional, Gonzales, Jaime, additional, Guajardo, Patricia, additional, Guerlet, Thibaut, additional, Guieu, Sylvain, additional, Gutierrez, Pablo, additional, Haguenauer, Pierre, additional, Vanderheyden, Pierre, additional, Huber, Stefan, additional, Hubin, Norbert, additional, Hummel, Christian A., additional, Jochum, Lieselotte, additional, Jocou, Laurent, additional, Kirchbauer, Jean-Paul, additional, Kolb, Johann, additional, Kosmalski, Johan, additional, Krempl, Peter, additional, Lacour, Sylvestre, additional, Le Bouquin, Jean-Baptiste, additional, Leclercq, Julien, additional, Lizon, Jean-Louis, additional, Lopez, Bruno, additional, Magnard, Yves, additional, Meilland, Anthony, additional, Meister, Alexander, additional, Mérand, Antoine, additional, Mieske, Steffen, additional, Moulin, Thibaut, additional, Osorio, Juan, additional, Ott, Jürgen, additional, Paladini, Claudia, additional, Pallanca, Laurent, additional, Pavez, Marcus, additional, Pasquini, Luca, additional, Pelluet, Célia, additional, Percheron, Isabelle, additional, Pettazzi, Lorenzo, additional, Pino Pavez, Andres, additional, Poupar, Sebastien, additional, Ramírez, Andres F., additional, Reyes-Moreno, Javier, additional, Riquelme, Miguel, additional, Rivinius, Thomas, additional, Rochat, Sylvain, additional, Salgado, Fernando, additional, Schoeller, Markus, additional, Schuhler, Nicolas, additional, Shchekaturov, Pavel, additional, Stephan, Christian, additional, Suárez Valles, Marcos, additional, Smette, Alain, additional, Tamblay, Richard, additional, Tapia, Mario, additional, Tristram, Konrad R. W., additional, Valdes, Guillermo, additional, Verinaud, Christophe, additional, Wittkowski, Markus, additional, Woillez, Julien, additional, and Zins, Gérard, additional

Published
2020
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16. NaCo — The Story of a Lifetime

Author

Schmidtobreick, Linda, Ageorges, Nancy, Amico, Paola, Brandner, Wolfgang, Cerda, Suzana, Cid, Claudia, Close, Laird, Garces, Eduardo, Gillet, Gordon, Girard, Julien H., Guajardo, Patricia, Hau, George, Hummel, Wolfgang, Jung, Yves, Kasper, Markus, Lidman, Christopher, Lundin, Lars Kristian, Mardones, Pedro, Mawet, Dimitri, O’Neal, Jared, Pompei, Emanuela, Schmutzer, Ricardo, Silva, Karleyne, Smoker, Jonathan, Soenke, Christian, Tacconi-Garman, Lowell E., Valenti, Elena, Valenzuela, Javier, Velasquez, Jose, and Zins, Gerard

Abstract

NaCo was switched off on 2 October 2019, almost 18 years after its first light. The last exposure was of the standard star HD590 as part of the close-out calibrations. To date, 699 papers have been published using NaCo data, including observations of the Galactic centre, direct images of exoplanets orbiting their stars, young stellar objects, brown dwarfs, massive stars, stellar clusters, Solar System objects, SN 1987A and several extragalactic sources. We present a short history of the life and achievements of NaCo from the viewpoint of the Instrument Operation Team, Instrument Scientists, and Instrument Engineers., Published in The Messenger vol. 179, pp. 7-11, March 2020.

Published
2020
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17. Multiple star systems in the Orion nebula

Author

Karl, Martina, Pfuhl, Oliver, Eisenhauer, Frank, Genzel, Reinhard, Grellmann, Rebekka, Habibi, Maryam, Abuter, Roberto, Accardo, Matteo, Amorim, Antonio, Anugu, Narsireddy, Avila, Gerardo, Benisty, Myriam, Berger, Jean-Philippe, Blind, Nicolas, Bonnet, Henri, Bourget, Pierre, Brandner, Wolfgang, Brast, Roland, Buron, Alexander, Garatti, Alessio Caratti O., Chapron, Frederic, Clenet, Yann, Collin, Claude, du Foresto, Vincent Coude, de Wit, Willem-Jan, de Zeeuw, Tim, Deen, Casey, Delplancke-Stroebele, Francoise, Dembet, Roderick, Derie, Frederic, Dexter, Jason, Duvert, Gilles, Ebert, Monica, Eckart, Andreas, Esselborn, Michael, Fedou, Pierre, Finger, Gert, Garcia, Paulo, Dabo, Cesar Enrique Garcia, Lopez, Rebeca Garcia, Gao, Feng, Gendron, Eric, Gillessen, Stefan, Gonte, Frederic, Gordo, Paulo, Groezinger, Ulrich, Guajardo, Patricia, Guieu, Sylvain, Haguenauer, Pierre, Hans, Oliver, Haubois, Xavier, Haug, Marcus, Haussmann, Frank, Henning, Thomas, Hippler, Stefan, Horrobin, Matthew, Huber, Armin, Hubert, Zoltan, Hubin, Norbert, Jakob, Gerd, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kellner, Stefan, Kendrew, Sarah, Kern, Lothar, Kervella, Pierre, Kiekebusch, Mario, Klein, Ralf, Koehler, Rainer, Kolb, Johan, Kulas, Martin, Lacour, Sylvestre, Lapeyrere, Vincent, Lazareff, Bernard, Le Bouquin, Jean-Baptiste, Lena, Pierre, Lenzen, Rainer, Leveque, Samuel, Lin, Chien-Cheng, Lippa, Magdalena, Magnard, Yves, Mehrgan, Leander, Merand, Antoine, Moulin, Thibaut, Mueller, Eric, Mueller, Friedrich, Neumann, Udo, Oberti, Sylvain, Ott, Thomas, Pallanca, Laurent, Panduro, Johana, Pasquini, Luca, Paumard, Thibaut, Percheron, Isabelle, Perraut, Karine, Perrin, Guy, Pflueger, Andreas, Plewa, Philipp M., Popovic, Dan, Rabien, Sebastian, Ramirez, Andres, Ramos, Jose, Rau, Christian, Riquelme, Miguel, Rodriguez-Coira, Gustavo, Rohloff, Ralf-Rainer, Rosales, Alejandra, Rousset, Gerard, Sanchez-Bermudez, Joel, Scheithauer, Silvia, Schoeller, Markus, Schuhler, Nicolas, Spyromilio, Jason, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Suarez, Marcos, Tristram, Konrad R. W., Ventura, Noel, Vincent, Frederic, Waisberg, Idel, Wank, Imke, Widmann, Felix, Wieprecht, Ekkehard, Wiest, Michael, Wiezorrek, Erich, Wittkowski, Markus, Woillez, Julien, Wolff, Burkhard, Yazici, Senol, Ziegler, Denis, Zins, Gerard, Karl, Martina, Pfuhl, Oliver, Eisenhauer, Frank, Genzel, Reinhard, Grellmann, Rebekka, Habibi, Maryam, Abuter, Roberto, Accardo, Matteo, Amorim, Antonio, Anugu, Narsireddy, Avila, Gerardo, Benisty, Myriam, Berger, Jean-Philippe, Blind, Nicolas, Bonnet, Henri, Bourget, Pierre, Brandner, Wolfgang, Brast, Roland, Buron, Alexander, Garatti, Alessio Caratti O., Chapron, Frederic, Clenet, Yann, Collin, Claude, du Foresto, Vincent Coude, de Wit, Willem-Jan, de Zeeuw, Tim, Deen, Casey, Delplancke-Stroebele, Francoise, Dembet, Roderick, Derie, Frederic, Dexter, Jason, Duvert, Gilles, Ebert, Monica, Eckart, Andreas, Esselborn, Michael, Fedou, Pierre, Finger, Gert, Garcia, Paulo, Dabo, Cesar Enrique Garcia, Lopez, Rebeca Garcia, Gao, Feng, Gendron, Eric, Gillessen, Stefan, Gonte, Frederic, Gordo, Paulo, Groezinger, Ulrich, Guajardo, Patricia, Guieu, Sylvain, Haguenauer, Pierre, Hans, Oliver, Haubois, Xavier, Haug, Marcus, Haussmann, Frank, Henning, Thomas, Hippler, Stefan, Horrobin, Matthew, Huber, Armin, Hubert, Zoltan, Hubin, Norbert, Jakob, Gerd, Jochum, Lieselotte, Jocou, Laurent, Kaufer, Andreas, Kellner, Stefan, Kendrew, Sarah, Kern, Lothar, Kervella, Pierre, Kiekebusch, Mario, Klein, Ralf, Koehler, Rainer, Kolb, Johan, Kulas, Martin, Lacour, Sylvestre, Lapeyrere, Vincent, Lazareff, Bernard, Le Bouquin, Jean-Baptiste, Lena, Pierre, Lenzen, Rainer, Leveque, Samuel, Lin, Chien-Cheng, Lippa, Magdalena, Magnard, Yves, Mehrgan, Leander, Merand, Antoine, Moulin, Thibaut, Mueller, Eric, Mueller, Friedrich, Neumann, Udo, Oberti, Sylvain, Ott, Thomas, Pallanca, Laurent, Panduro, Johana, Pasquini, Luca, Paumard, Thibaut, Percheron, Isabelle, Perraut, Karine, Perrin, Guy, Pflueger, Andreas, Plewa, Philipp M., Popovic, Dan, Rabien, Sebastian, Ramirez, Andres, Ramos, Jose, Rau, Christian, Riquelme, Miguel, Rodriguez-Coira, Gustavo, Rohloff, Ralf-Rainer, Rosales, Alejandra, Rousset, Gerard, Sanchez-Bermudez, Joel, Scheithauer, Silvia, Schoeller, Markus, Schuhler, Nicolas, Spyromilio, Jason, Straub, Odele, Straubmeier, Christian, Sturm, Eckhard, Suarez, Marcos, Tristram, Konrad R. W., Ventura, Noel, Vincent, Frederic, Waisberg, Idel, Wank, Imke, Widmann, Felix, Wieprecht, Ekkehard, Wiest, Michael, Wiezorrek, Erich, Wittkowski, Markus, Woillez, Julien, Wolff, Burkhard, Yazici, Senol, Ziegler, Denis, and Zins, Gerard

Abstract

This work presents an interferometric study of the massive-binary fraction in the Orion Trapezium cluster with the recently comissioned GRAVITY instrument. We observed a total of 16 stars of mainly OB spectral type. We find three previously unknown companions for theta(1) Ori B, theta(2) Ori B, and theta(2) Ori C. We determined a separation for the previously suspected companion of NU Ori. We confirm four companions for theta(1) Ori A, theta(1) Ori C, theta(1) Ori D, and theta(2) Ori A, all with substantially improved astrometry and photometric mass estimates. We refined the orbit of the eccentric high-mass binary theta(1) Ori C and we are able to derive a new orbit for theta(1) Ori D. We find a system mass of 21.7 M-circle dot and a period of 53 days. Together with other previously detected companions seen in spectroscopy or direct imaging, eleven of the 16 high-mass stars are multiple systems. We obtain a total number of 22 companions with separations up to 600 AU. The companion fraction of the early B and O stars in our sample is about two, significantly higher than in earlier studies of mostly OB associations. The separation distribution hints toward a bimodality. Such a bimodality has been previously found in A stars, but rarely in OB binaries, which up to this point have been assumed to be mostly compact with a tail of wider companions. We also do not find a substantial population of equal-mass binaries. The observed distribution of mass ratios declines steeply with mass, and like the direct star counts, indicates that our companions follow a standard power law initial mass function. Again, this is in contrast to earlier findings of flat mass ratio distributions in OB associations. We excluded collision as a dominant formation mechanism but find no clear preference for core accretion or competitive accretion.

Published
2018

18. Descripción y análisis sobre los hábitos de lectura recreativa de estudiantes del nivel medio superior y un enfoque en las herramientas tecnológicas preferidas.

Author

Mazcorro Guajardo, Patricia and Mazcorro Guajardo, Patricia

Abstract

En la presente investigación de tesis se exponen los resultados de una investigación que se llevó a cabo a principios de agosto del 2010 a diciembre del 2013 en el CIDEB (centro de investigación y desarrollo de educación bilingüe) y la Preparatoria No. 1 de Apodaca Nuevo León. La problemática se desarrolla en varios aspectos de los hábitos, el comportamiento y el consumo de la lectura recreativa de los adolescentes y la corriente tecnológica presente; estableciendo un análisis de si éste último es un aliado o enemigo en este proceso educativo del nivel medio superior. La metodología de investigación aplicada es cualitativa, cuantitativa y comparativa siendo las teorías educativas y sociales las que fundamentan el análisis de los resultados los cuales serán útiles para futuras estrategias de aprendizaje que refuercen las bases del mismo como método para el crecimiento del hábito y comprensión de lectura. Las principales conclusiones ofrecen el perfil de adolescente, su participación y / o rol dentro de un contexto social, las variables a las que está sujeto, los niveles educativos, y los consumos habituales de libros entre ambas instituciones para identificar el desarrollo y crecimiento del fenómeno y sus consecuencias según las características del entorno que los rodea.

Published
2018

19. VLTI status update: a decade of operations and beyond

Author

Mérand, Antoine, additional, Abuter, Roberto, additional, Aller-Carpentier, Emmanuel, additional, Andolfato, Luigi, additional, Alonso, Jaime, additional, Berger, Jean-Philippe, additional, Blanchard, Guillaume, additional, Boffin, Henri, additional, Bourget, Pierre, additional, Bristow, Paul, additional, Cid, Claudia, additional, de Wit, Willem-Jan, additional, del Valle, Diego, additional, Delplancke-Ströbele, Françoise, additional, Derie, Frédéric, additional, Faundez, Lorena, additional, Ertel, Steve, additional, Grellmann, Rebekka, additional, Gitton, Philippe, additional, Glindemann, Andreas, additional, Guajardo, Patricia, additional, Guieu, Sylvain, additional, Guisard, Stéphane, additional, Guniat, Serge, additional, Haguenauer, Pierre, additional, Herrera, Cristian, additional, Hummel, Christian, additional, La Fuente, Carlos, additional, Lopez, Marcelo, additional, Mardones, Pedro, additional, Morel, Sébastien, additional, Müller, André, additional, Percheron, Isabelle, additional, Duc, Than Phan, additional, Pino, Andres, additional, Poupar, Sébastien, additional, Pozna, Eszter, additional, Ramirez, Andres, additional, Rengaswamy, Srihdaran, additional, Rivas, Lionel, additional, Rivinius, Thomas, additional, Segovia, Alex, additional, Schmid, Christian, additional, Schöller, Markus, additional, Schuhler, Nicolas, additional, Woillez, Julien, additional, and Wittkowski, Markus, additional

Published
2014
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20. Política Hídrica y Cambio Tecnológico en Tecnologías Aplicadas al Tratamiento de las Aguas Residuales

Author

Guajardo, Patricia Ramirez, Longar Blanco, Maria del Pilar, Gómez Viquez, Hortensia, Guajardo, Patricia Ramirez, Longar Blanco, Maria del Pilar, and Gómez Viquez, Hortensia

Abstract

The goal of the project is to analyze the effect of the hydrological policy on the technological change of infrastructure for the treatment of sewage waters in Distrito Federal on the lapse time from 1970 to 2010, specifically on the Cerro de la Estrella plant. On this case, the hypothesis that environmental regulations generate positive effects on the technological development and favour the innovation has not been met. The plant of study has an obsolete infrastructure, centered on the efficiency on the treatment of sewage waters for the recovery of water of industrial use and on not developing technologies.

Published
2013

22. VLTI status update.

Author

Haubois, Xavier, Mérand, Antoine, Abuter, Roberto, Araneda, Juan Pablo, Bian, Fuyan, Bourget, Pierre, Bristow, Paul, Burgos, Pablo, Delplancke-Ströbele, Françoise, Dembet, Roderick, Gil, Juan Pablo, Glindemann, Andreas, Gonté, Frédéric, Guajardo, Patricia, Hubin, Norbert, Hummel, Christian, Korhonen, Heidi, Labdon, Aaron, Kolb, Johann, and Kosmalski, Johan

Published
2022
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24. VLTI status update

Author

Mérand, Antoine, Sallum, Stephanie, Sanchez-Bermudez, Joel, Haubois, Xavier, Mérand, Antoine, Abuter, Roberto, Araneda, Juan Pablo, Bian, Fuyan, Bourget, Pierre, Bristow, Paul, Burgos, Pablo, Delplancke-Ströbele, Françoise, Dembet, Roderick, Gil, Juan Pablo, Glindemann, Andreas, Gonté, Frédéric, Guajardo, Patricia, Hubin, Norbert, Hummel, Christian, Korhonen, Heidi, Labdon, Aaron, Kolb, Johann, Kosmalski, Johan, Lacour, Sylvestre, Paladini, Claudia, Pallanca, Laurent, Pasquini, Luca, Percheron, Isabelle, Riquelme, Miguel, Rivinius, Thomas, Sani, Eleonora, Schmidtobreick, Linda, Scicluna, Peter, Schöller, Markus, Schuhler, Nicolas, Tristram, Konrad, Wittkowski, Markus, Woillez, Julien, and Zins, Gérard

Published
2022
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25. VLTI status update: tapping into a powerful second-generation instrumentation

Author

Tuthill, Peter G., Mérand, Antoine, Sallum, Stephanie, Haubois, Xavier, Abuter, Roberto, Aller-Carpentier, Emmanuel, Alonso, Jaime, Beltran, Juan, Berger, Jean-Philippe, Bourget, Pierre, Bristow, Paul, Caniguante, Luis, Chazelas, Bruno, Cid, Claudia, Conzelmann, Ralf, Cortes, Angela, Darré, Pascaline, Delboulbé, Alain, Delplancke-Ströbele, Françoise, Del Valle, Diego, Dembet, Roderick, Donoso, Reinaldo, Dupuy, Christophe, Egner, Sebastien, Eisenhauer, Frank, Faundez, Lorena, Fuenteseca, Eloy, Frahm, Robert, Gaytan, Daniel, Gil, Juan Pablo, Glindemann, Andreas, Gonté, Frédéric, Gonzales, Jaime, Guajardo, Patricia, Guerlet, Thibaut, Guieu, Sylvain, Gutierrez, Pablo, Haguenauer, Pierre, van der Heyden, Pierre, Huber, Stefan, Hubin, Norbert, Hummel, Christian, Jochum, Lieselotte, Jocou, Laurent, Kirchbauer, Jean-Paul, Kolb, Johann, Kosmalski, Johan, Krempl, Peter, Lacour, Sylvestre, Le Bouquin, Jean-Baptiste, Leclercq, Julien, Lizon, Jean Louis, Lopez, Bruno, Magnard, Yves, Meilland, Anthony, Meister, Alexander, Mérand, Antoine, Mieske, Steffen, Moulin, Thibaut, Osorio, Juan, Ott, Jürgen, Paladini, Claudia, Pallanca, Laurent, Pavez, Marcus, Pasquini, Luca, Pelluet, Célia, Percheron, Isabelle, Pettazzi, Lorenzo, Pino, Andrés, Poupar, Sébastien, Ramírez, Andrés, Reyes, Javier, Riquelme, Miguel, Rivinius, Thomas, Rochat, Sylvain, Salgado, Fernando, Schöller, Markus, Schuhler, Nicolas, Shchekaturov, Pavel, Stephan, Christian, Suarez, Marcos, Smette, Alain, Tamblay, Richard, Tapia, Mario, Tristram, Konrad, Valdes, Guillermo, Verinaud, Christophe, Wittkowski, Markus, Woillez, Julien, and Zins, Gérard

Published
2020
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