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Ornago, L. (author), Zwick, Patrick (author), van der Poel, S. (author), Brandl, Thomas (author), El Abbassi, M. (author), Perrin, Mickael L. (author), Dulić, Diana (author), van der Zant, H.S.J. (author), Mayor, Marcel (author)The addition of a lateral alkyl chain is a well-known strategy to reduce π-stacked ensembles of molecules in solution, with the intention to minimize the interactions between the molecules’ backbones. In this paper, we study whether this concept generalizes to single-molecule junctions by using a combination of mechanically controllable break...journal article 2024
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Moerman, A. (author), Karatsu, K. (author), Yates, S.J.C. (author), Huiting, R. (author), Steenvoorde, F. (author), Dabironezare, Shahab Oddin (author), Takekoshi, T. (author), Baselmans, J.J.A. (author), Brandl, B.R. (author), Endo, A. (author)Context. Integrated superconducting spectrometers (ISSs) for wide-band submillimeter (submm) astronomy use quasi-optical systems for coupling radiation from the telescope to the instrument. Misalignment in these systems is detrimental to the system performance. The common method of using an optical laser to align the quasi-optical components...journal article 2024
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Rogers, Ciarán (author), de Marchi, Guido (author), Brandl, B.R. (author)In this Letter, we present the first systematic spectroscopic measurements of the near-infrared (NIR) hydrogen recombination lines Paschen alpha (Pa<sub>α</sub>λ = 1.875 µm) and Brackett beta (Br<sub>β</sub>λ = 2.626 µm), produced by pre-main-sequence (PMS) stars. Such stars include T Tauri and Herbig AeBe stars, located in the massive...journal article 2024
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Álvarez-Márquez, J. (author), Labiano, A. (author), Guillard, P. (author), Dicken, D. (author), Argyriou, I. (author), Patapis, P. (author), Kavanagh, P. J. (author), Alberts, S. (author), Brandl, B.R. (author)Context. During the commissioning of the James Webb Space Telescope (JWST), the mid-infrared instrument (MIRI) observed NGC 6552 with the MIRI Imager and the Medium-Resolution Spectrograph (MRS). NGC 6552 is an active galactic nucleus (AGN) at a redshift of 0.0266 (DL = 120 Mpc) classified as a Seyfert 2 nucleus in the optical and Compton...journal article 2023
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Argyriou, Ioannis (author), Lage, Craig (author), Rieke, George H. (author), Gasman, Danny (author), Bouwman, Jeroen (author), Morrison, Jane (author), Libralato, Mattia (author), Dicken, Daniel (author), Brandl, B.R. (author)Context. The Mid-Infrared Instrument (MIRI) on board the James Webb Space Telescope (JWST) uses three Si:As impurity band conduction (IBC) detector arrays. The output voltage level of each MIRI detector pixel is digitally recorded by sampling up the ramp. For uniform or low-contrast illumination, the pixel ramps become nonlinear in a...journal article 2023
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Vaughan, Sophia R. (author), Gebhard, Timothy D. (author), Cowan, N.J.P. (author), Doelman, D.S. (author), Kenworthy, M.A. (author), Trees, V.J.H. (author), Stam, D.M. (author), Brandl, B.R. (author), Kleisioti, E. (author)NASA is engaged in planning for a Habitable Worlds Observatory (HabWorlds), a coronagraphic space mission to detect rocky planets in habitable zones and establish their habitability. Surface liquid water is central to the definition of planetary habitability. Photometric and polarimetric phase curves of starlight reflected by an exoplanet can...journal article 2023
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Brandl, B.R. (author), Bettonvil, F. (author), van Boekel, R. (author), Glauser, A. (author), Quanz, S. (author), Absil, O. (author), Amorim, A. (author), Feldt, M. (author), Ho, P. (author), Meyer, M. (author)The Mid-infrared ELT Imager and Spectrograph (METIS) will provide the Extremely Large Telescope (ELT) with a unique window to the thermal- and mid-infrared (3–13 µm). Its single-conjugate adaptive optics (SCAO) system will enable high contrast imaging and integral field unit (IFU) spectroscopy (R ~ 100 000) at the diffraction limit of the ELT....journal article 2021
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Labiano, A. (author), Argyriou, I. (author), Álvarez-Márquez, J. (author), Glasse, A. (author), Glauser, A. (author), Patapis, P. (author), Law, D. (author), Brandl, B.R. (author), Mueller, M. (author)Context. The Mid-Infrared Instrument (MIRI) onboard the James Webb Space Telescope (JWST) will provide imaging, coronagraphy, low-resolution spectroscopy, and medium-resolution spectroscopy at unprecedented sensitivity levels in the mid-infrared wavelength range. The Medium Resolution Spectrometer (MRS) of MIRI is an integral field...journal article 2021
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Packham, Chris (author), Brandl, B.R. (author)With the imminent launch of the JWST, the field of thermal-infrared (TIR) astronomy will enjoy a revolution. It is easy to imagine that all areas of infrared (IR) astronomy will be greatly advanced, but perhaps impossible to conceive of the new vistas that will be opened. To allow both follow-up JWST observations and a continuance of work...other 2020
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Brandl, B.R. (author)I will briefly introduce the fundamental limitations of modern mid-IR facilities, both from ground and in space, and highlight their unique discovery spaces. I will generally discuss the unique challenges that ELTs impose on mid-IR instruments, from adaptive optics and high-contrast imaging to the complex thermal infrared background and and...other 2020
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- Brandl, B.R. (author), Levenson, Nancy (author) other 2020
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Burtscher, Leonard (author), Politopoulos, Ioannis (author), Fernández-Acosta, Sergio (author), Agocs, Tibor (author), van den Ancker, Mario (author), van Boekel, Roy (author), Brandl, B.R. (author), Käufl, Hans-Ulrich (author), Pantin, Eric (author)Ground-based thermal-infrared observations have a unique scientific potential, but are also extremely challenging due to the need to accurately subtract the high thermal background. Since the established techniques of chopping and nodding need to be modified for observations with the future mid-infrared ELT imager and spectrograph (METIS), we...conference paper 2020
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Mueller, Michael (author), Brandl, B.R. (author), Husárová, Lenka (author)The James-Webb Telescope, to be launched in 2021, will be a great tool to measure the size of asteroids. Many mid-infrared observations will detect asteroids, whether that's intended or not. We calculate how many asteroids will be detected that way (serendipitously): many thousands, mostly asteroids that are too small to be observable today.abstract 2019
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Stuik, Remko (author), Arcier, Benjamin (author), Brandl, B.R. (author)METIS, the Mid-IR instrument for the ELT will be operating an internal Single Conjugate Adaptive Optics System (SCAO), which will be the work horse AO system and mainly serve the science cases targeting exoplanets and disks around bright stars. In order to extend the sky coverage and brightness range of targets requiring AO correction to...conference paper 2019
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Brandl, Thomas (author), El Abbassi, M. (author), Stefani, D. (author), Frisenda, R. (author), Harzmann, Gero D. (author), van der Zant, H.S.J. (author), Mayor, Marcel (author)A new concept to improve the reliability of functional single molecule junctions is presented using the E-field triggered switching of Fe<sup>II</sup>bis-terpyridine complexes in a mechanically controlled break junction experiment as model system. The complexes comprise a push-pull ligand sensing the applied E-field and the resulting...journal article 2019
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- Nguyen, V. H. (author), Besanger, Y. (author), Tran, Q. T. (author), Nguyen, T.L. (author), Boudinet, C. (author), Brandl, R. (author), Marten, F. (author), Markou, A. (author), Kotsampopoulos, Panos (author), van der Meer, A.A. (author), Guillo-Sansano, E. (author), Lauss, Georg (author), Strasser, Thomas (author), Heussen, K. (author) conference paper 2017
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Croxall, K. V. (author), Smith, J. D T (author), Pellegrini, E. (author), Groves, Brent (author), Bolatto, Alberto (author), Herrera-Camus, Rodrigo (author), Sandstrom, K. M. (author), Draine, Bruce (author), Wolfire, M. G. (author), Armus, Lee (author), Boquien, Mederic (author), Brandl, B.R. (author), Dale, Daniel A. (author), Galametz, Maud (author), Hunt, L. K. (author), Kennicutt, R. C. (author), Kreckel, K. (author), Rigopoulou, D. (author), van der werf, p (author), Wilson, C (author)The [C ii] 158 μm fine-structure line is the brightest emission line observed in local star-forming galaxies. As a major coolant of the gas-phase interstellar medium, [C ii] balances the heating, including that due to far-ultraviolet photons, which heat the gas via the photoelectric effect. However, the origin of [C ii] emission remains...journal article 2017
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Snellen, I. A G (author), Désert, J. M. (author), Waters, L. B.F.M. (author), Robinson, T (author), Meadows, V. (author), van Dishoeck, E.F. (author), Brandl, B.R. (author), Henning, T. (author), Bouwman, J. (author), Lahuis, F. (author), Min, M. (author), Lovis, C. (author), Dominik, C. (author), Van Eylen, V. (author), Sing, D. (author), Anglada-Escudé, G. (author), Birkby, J. L. (author), Brogi, M. (author)Exoplanet Proxima b will be an important laboratory for the search for extraterrestrial life for the decades ahead. Here, we discuss the prospects of detecting carbon dioxide at 15 μm using a spectral filtering technique with the Medium Resolution Spectrograph (MRS) mode of the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope ...journal article 2017
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Abdullah, A. (author), Brandl, B.R. (author), Groves, Brent (author), Wolfire, Mark (author), Calzetti, D. (author), Croxall, Kevin (author), Looze, Ilse De (author), Kennicutt, R. C. (author), Sandstrom, K. M. (author), Armus, Lee (author), Dale, Daniel A. (author), Galametz, Maud (author), Herrera-Camus, Rodrigo (author), Hunt, L. K. (author), Smith, J. D T (author), Tielens, A. G.G.M. (author)With its relatively low ionization potential, C<sup>+</sup> can be found throughout the interstellar medium (ISM) and provides one of the main cooling channels of the ISM via the [C ii] 157 μm emission. While the strength of the [C ii] line correlates with the star formation rate, the contributions of the various gas phases to the [C ii]...journal article 2017
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Widl, Edmund (author), Spiegel, Michael (author), Moyo, Cyndi (author), Strasser, Thomas (author), van der Meer, A.A. (author), Palensky, P. (author), Bhandia, R. (author), Emhemed, A. (author), Syed, M. (author), Gehrke, Oliver (author), Morales Bondy, D. E. (author), Steinbrink, C (author), Blank, M. (author), Stathakis, A. (author), Sarris, T. (author), Kotsampopoulos, Panos (author), Akroud, N. (author), Sagarduy, I. O. (author), Nguyen, V. H. (author), Moneta, D. (author), Sandroni, C. (author), Corti, S. (author), Uski, S. (author), Matti, L. (author), Chodura, P. (author), Brandl, R. (author), Tran, Q. T. (author), Lazpita, B. (author), Delaplagne, T. (author)Work package JRA2 focuses on the development of advanced simulation-based methods to checkand validate smart grid scenarios, configurations and corresponding applications. The main aim isto employ offline simulation of scenarios where a combination of parallel processing, advanced optimization techniques, and design-of-experiments is used to...report 2017
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