Results 21 to 30 of about 32,134 (136)

Bispectrum speckle interferometry observations and radiative transfer modelling of the red supergiant NML Cyg: Multiple dust-shell structures evidencing previous superwind phases [PDF]

, 2001
(abridged) NML Cyg is a highly evolved OH/IR supergiant and supposed to be among the most luminous supergiants in the galaxy. We present the first diffraction limited 2.13micron observations of NML Cyg with 73mas resolution.
Benson, Blöcker, Boboltz, Bowers, David, de Jager, Diamond, Dickinson, Draine, Dyck, Dyck, Dyck, Dyck, Dyck, Dyck, Engels, Fix, Forbes, G. Weigelt, Gauger, Goss, Gregory, Habing, Hackwell, Harris, Harvey, Heger, Herbig, Hofmann, Hyland, Ivezic, Ivezic, Johnson, Johnson, Johnson, Justtanont, K.-H. Hofmann, Knapp, Kruzewski, Krüger, Labeyrie, Langer, Lee, Lohmann, Low, Masheder, Mathis, Merrill, Monnier, Monnier, Morris, Morris, Neugebauer, Ossenkopf, Perrin, Richards, Ridgway, Savage, Schwartz, Schwartz, Sibille, Snyder, Sopka, Strecker, Strecker, Sudol, Suh, T. Blöcker, Walmsley, Weigelt, Wilson, Winters, Y. Balega   +72 more
core   +2 more sources

ISO observations and models of galaxies with Hidden Broad Line Regions

, 2005
We present ISO mid-infrared spectrophotometry and far-infrared photometry of galaxies with Hidden Broad Line Regions (HBLR). We also present radiative transfer models of their spectral energy distributions which enable us to separate the contributions ...
A. Efstathiou, Alexander, Alexander, Antonucci, Antonucci, Bruzual, Cameron, Cesarsky, Clavel, Coulais, Dullemond, Efstathiou, Efstathiou, Efstathiou, Efstathiou, Farrah, Farrah, Galliano, Genzel, Granato, Granato, Heisler, Hughes, Kessler, Krügel, Kuraszkiewicz, Laor, Lumsden, Lumsden, Maiolino, Maiolino, Miller, Morel, Nenkova, Pier, Pier, Priddey, R. Siebenmorgen, Rieke, Roche, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, Ruiz, Scott, Siebenmorgen, Siebenmorgen, Silva, Starck, Telesco, Tran, Tran, van Bemmel, Verma, Young, Young   +58 more
core   +1 more source

First Results from the rapid-response spectrophotometric characterization of Near-Earth Objects [PDF]

, 2019
As part of our multi-observatory, multi-filter campaign, we present \rmi color observations of 82 Near-Earth Objects (NEOs) obtained with the RATIR instrument on the 1.5m robotic telescope at the San Pedro Martir's National Observatory in Mexico.
Axelrod, Tim, Butler, Nathaniel, Jedicke, Robert, Mommert, Michael, Moskovitz, Nicholas, Navarro-Meza, Samuel, Pichardo, Barbara, Reyes-Ruiz, Mauricio, Trilling, David   +8 more
core   +2 more sources

Discovery of 21 New Changing-look AGNs in Northern Sky

, 2018
The rare case of changing-look (CL) AGNs, with the appearance or disappearance of broad Balmer emission lines within a few years, challenges our understanding of the AGN unified model.
Fan, Xiaohui, Feng, Xiaotong, Fu, Yuming, Green, Richard, Jiang, Linhua, Joshi, Ravi, Liu, Yuanqi, McGreer, Ian, Shangguan, Jinyi, Wang, Bingquan, Wang, Feige, Wu, Xue-Bing, Yang, Jinyi, Yang, Qian, Yao, Su   +14 more
core   +1 more source

The timing and location of dust formation in the remnant of SN 1987A [PDF]

, 2014
The discovery with the {\it Herschel Space Observatory} of bright far infrared and submm emission from the ejecta of the core collapse supernova SN\,1987A has been interpreted as indicating the presence of some 0.4--0.7\,M$_\odot$ of dust.
Barlow, M. J., Ercolano, B., Matsuura, M., Wesson, R.   +3 more
core   +4 more sources

Transmission enhancement through square coaxial apertures arrays in metallic film: when leaky modes filter infrared light

, 2014
We consider arrays of square coaxial apertures in a gold layer and study their diffractive behavior in the far infrared region. These structures exhibit a resonant transmission enhancement that is used to design tunable bandpass filters.
Bedu, Frédéric, Commandré, Mireille, Dallaporta, Hervé, Demésy, Guillaume, Nicolet, André, Roux, Laurent, Tisserand, Stéphane, Vial, Benjamin, Zolla, Frédéric   +8 more
core   +3 more sources

The secondary star and distance of the polar V1309 Ori [PDF]

, 2006
The first phase-resolved JHK light curves of the eclipsing polar (AM Herculis binary) V1309 Ori are presented and interpreted. We separate the contributions from the secondary star and from other sources with the aim of determining a photometric distance.
Bailey, Barnes, Beuermann, Beuermann, Beuermann, Beuermann, Beuermann, Buckley, Claret, Claret, Garnavich, Gänsicke, Harrop-Allin, K. Beuermann, K. Reinsch, Katajainen, King, O'Brien, Ramseyer, Schmidt, Schwarz, Shafter, Staude, Tokunaga, Walter, Wu, Y. Kim   +26 more
core   +2 more sources

SOFIA Infrared Spectrophotometry of Comet C/2012 K1 (Pan-STARRS)

, 2015
We present pre-perihelion infrared 8 to 31 micron spectrophotometric and imaging observations of comet C/2012 K1 (Pan-STARRS), a dynamically new Oort Cloud comet, conducted with NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) facility ...
de Pater, Imke, Gehrz, Robert D., Harker, David E., Kelley, Michael S. P., Kolokolova, Ludmilla, Reach, William T., Russell, Ray W., Ryan, Erin L., Sitko, Michael L., Wooden, Diane H., Woodward, Charles E.   +10 more
core   +1 more source

The high-field polar RX J1007.5-2017 [PDF]

, 2012
We report optical and X-ray observations of the high-field polar RXJ1007.5-2017 performed between 1990 and 2012. It has an orbital period of 208.60 min determined from the ellipsoidal modulation of the secondary star in an extended low state.
Beuermann, K., Burwitz, V., Reinsch, K., Schwope, A. D., Thomas, H. -C.   +4 more
core   +2 more sources

Tests of stellar model atmospheres by optical interferometry: VLTI/VINCI limb-darkening measurements of the M4 giant psi phe

, 2003
We present K-band interferometric measurements of the limb-darkened intensity profile of the M4 giant star psi Phoenicis obtained with VLTI/VINCI. High-precision squared visibility amplitudes in the second lobe of the visibility function were obtained ...
Aufdenberg, Aufdenberg, Ballester, Baschek, Batten, Bessell, Bessell, Bessell, Bordé, Burnashev, Burns, Cardelli, Claret, Claret, Cohen, Coudé du Foresto, Coudé du Foresto, Coudé du Foresto, Crampton, Davis, di Benedetto, Dyck, Eggen, Evans, Farge, Feast, Girardi, Glindemann, Hajian, Hanbury Brown, Haniff, Hauschildt, Hauschildt, Hofmann, J. P. Aufdenberg, Jankov, Johnson, Johnson, Johnson, Jones, Jones, Kervella, Kurucz, Leinert, Lunt, M. Wittkowski, Moro, P. Kervella, Percheron, Perrin, Petrov, Plez, Quirrenbach, Richichi, Schlegel, Scholz, Scholz, Scholz, Scholz, Ségransan, Tango, Wittkowski, Wittkowski   +62 more
core   +2 more sources