Results 51 to 60 of about 22,056 (167)

Gaia Search for Stellar Companions of TESS Objects of Interest V

Astronomische Nachrichten, EarlyView.
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

Optical and infrared photometry of Arakelian 120 [PDF]

Publications of the Astronomical Society of the Pacific, 1978
Optical and IR photometry of the Seyfert class 1 galaxy Arakelian 120 covering the wavelength range from 0.36 to 3.5 microns is reported. The observed fluxes are found to consist of contributions of starlight from the surrounding galaxy, emission lines, thermal gas continuum, nonthermal radiation, and possible IR emission from dust.
openaire   +2 more sources

Optical photometry of the UCM lists I and II [PDF]

Astronomy & Astrophysics, 2001
We present Johnson B surface photometry for the UCM Survey galaxies. One-dimensional bulge-disk decomposition is attempted, discussing on fitting functions and computational procedures. The results from this decomposition, jointly with concentration indices and an asymmetry coefficient, are employed to study the morphological properties of these ...
Pérez González, Pablo Guillermo, Gallego Maestro, Jesús, Zamorano Calvo, Jaime, Gil De Paz, Armando   +3 more
openaire   +7 more sources

First Light LBT AO Images of HR 8799 bcde at 1.65 and 3.3 Microns: New Discrepancies between Young Planets and Old Brown Dwarfs

, 2012
As the only directly imaged multiple planet system, HR 8799 provides a unique opportunity to study the physical properties of several planets in parallel.
Adam Burrows, Alfio Puglisi, Andrew J. Skemer, Armando Riccardi, Barman, Barman, Bowler, Burgasser, Burrows, Burrows, Burrows, Carmelo Arcidiacono, Chabrier, Craig Kulesa, Currie, Daniel Apai, Dino Mesa, Dodson-Robinson, Don McCarthy, Douglas L. Miller, Dupuy, Elena Masciadri, Enrico Pinna, Esposito, Fabrycky, Fernando Quiros-Pacheco, Filippo Mannucci, Galicher, Geballe, Gray, Guido Agapito, Guido Brusa, Heinze, Hinkley, Hinz, Janson, Jared Males, Jarron Leisenring, Javier Argomedo, John C. Wilson, John M. Hill, Joshua Eisner, Juan Carlos Guerra, Katherine B. Follette, Katie Morzinski, Knapp, Konstantina Boutsia, Kratter, Lafrenière, Laird Close, Leggett, Lorenzo Busoni, Luca Fini, Madhusudhan, Marco Xompero, Marley, Marois, Matthew Nelson, Megan Krejny, Metchev, Michael R. Meyer, Michael Skrutskie, Moro-Martín, Moór, Paolo Stefanini, Peter Garnavich, Philip M. Hinz, Raffaele Gratton, Riccardo Claudi, Runa Briguglio, Sascha P. Quanz, Saumon, Silvano Desidera, Simone Esposito, Skemer, Su, Sudol, Terry Jones, Timothy J. Rodigas, Vanessa Bailey, Vidhya Vaitheeswaran, William F. Hoffmann, Zuckerman   +82 more
core   +1 more source

TASS Mark IV Photometric Survey of the Northern Sky [PDF]

, 2006
The Amateur Sky Survey (TASS) is a loose confederation of amateur and professional astronomers. We describe the design and construction of our Mark IV systems, a set of wide-field telescopes with CCD cameras which take simultaneous images in the $V$ and $
Hog E., Maddox S. J., Manfroid J., Michael P. Sallman, Michael W. Richmond, Pojmanski G., Robert P. Creager, Thomas F. Droege   +7 more
core   +3 more sources

On the Age Distribution of Classical Cepheids in the Galaxy

Astronomische Nachrichten, EarlyView.
ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar‐Julià, Francesca Figueras   +5 more
wiley   +1 more source

Optical Multicolor Photometry of Spectrophotometric Standard Stars

The Astronomical Journal, 2007
76 pages, 48 figures - published version available here: http://www.journals.uchicago.edu/AJ/journal/issues/v133n3/205588/205588.html .
Arlo U. Landolt, Arlo U. Landolt, Arlo U. Landolt, Alan Uomoto, Alan Uomoto   +4 more
openaire   +3 more sources

MCAO near-IR photometry of the Globular Cluster NGC 6388: MAD observations in crowded fields

, 2008
Deep photometry of crowded fields, such as Galactic Globular Clusters, is severely limited by the actual resolution of ground-based telescopes. On the other hand, the Hubble Space Telescope does not provide the near-infrared (NIR) filters needed to allow
A. Baruffolo, A. Moretti, A. P. Milone, A. Sarajedini, Anderson, Anderson, Arcidiacono, Ashman, Bedin, Bedin, Busso, C. Arcidiacono, Caloi, Carretta, Cassisi, Catelan, D'Antona, D'Antona, De Angeli, E. Diolaiti, E. Marchetti, G. Piotto, Girardi, Gratton, Gullieuszik, Harris, Hawarden, Hughes, J. Anderson, J. Farinato, J. Kolb, L. R. Bedin, Lee, M. Lombini, Marchetti, Milone, Pancino, Penny, Pietrinferni, Piotto, Piotto, R. Brast, R. Donaldson, R. Falomo, R. Ragazzoni, Ragazzoni, Ragazzoni, Ragazzoni, Raimondo, Rich, Rich, S. Tordo, Salaris, Sarajedini, Schlegel, Sirianni, Stetson, Valenti, Yoon   +58 more
core   +2 more sources

Massive stellar systems: observational challenges and perspectives in the E-ELT era [PDF]

, 2015
We introduce the empirical framework concerning optical and near-infrared (NIR) photometry of crowded stellar fields. In particular, we address the impact that linear detectors and analytical PSF played in improving the accuracy and the precision of ...
Bono, G., Braga, V. F., Ferraro, I., Fiorentino, G., Gilmozzi, R., Iannicola, G., Magurno, D., Matsunaga, N., Monelli, M., RASTELLO, SARA   +9 more
core   +1 more source

A novel treatment of biogas digestate waste for biochar production and its adsorption of methylene blue and malachite green in a binary system

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study presents a novel treatment of biogas digestate to produce biochar at processing temperatures of 500–700 °C. The resulting biochar was applied for the simultaneous removal of methylene blue (MB) and malachite green (MG) in a binary system.
Van Hau Duong, Pham Xuan Phuong, Phan Thi Duy Thuan, Altyn Taisheva, Dinh Van Dung, Le Dinh Phung, Nguyen Thi Hong Bich, Nguyen Duy Luu, Dinh Quang Khieu, Filip Mercl, Hynek Roubík   +10 more
wiley   +1 more source