Results 101 to 110 of about 362,838 (268)

THE SPECTROSCOPY OF THE PULSATING CARBON STAR R Lep

Odessa Astronomical Publications, 2017
The first results of detailed spectroscopy are presented for carbon Mira R Leporis. This long-period variable is undergoing deep fadings, apparently caused by dust formation around the star.
L. Zacs, O. Alksnis
doaj   +1 more source

The Spectral Energy Distribution of HH 30 IRS: Constraining the Circumstellar Dust Size Distribution [PDF]

, 2001
We present spectral energy distribution (SED) models for the edge-on classical T Tauri star HH 30 IRS that indicate that dust grains have grown to larger than 50 μm within its circumstellar disk.
Kenneth Wood, Kenneth Wood, M. Wolff, J. Bjorkman, B. Whitney   +4 more
semanticscholar   +1 more source

Circumstellar Disks at White Dwarfs: Observations

, 2011
The current picture painted by the observations of circumstellar dust at white dwarfs, and the consequent atmospheric pollution, is of a surviving planetary system. This chapter recounts in detail both the discovery and empirical characterization of dust
Aannestad, Alcock, Alcock, Allamandola, Allègre, Bannister, Baraffe, Barnbaum, Barstow, Becklin, Beichman, Beichman, Bilikova, Bockelée-Morvan, Brinkworth, Burrows, Canup, Chary, Chayer, Clayton, Davidsson, Debes, Debes, Debes, Debes, Desharnais, Dobbie, Dobbie, Draine, Dufour, Dupuis, Dupuis, Dupuis, Däppen, Eisenstein, Farihi, Farihi, Farihi, Farihi, Farihi, Farihi, Farihi, Farihi, Farihi, Fazio, Ferrario, Fontaine, Friedrich, Friedrich, Gianninas, Graham, Green, Green, Gänsicke, Gänsicke, Gänsicke, Gänsicke, Hansen, Hoard, Holberg, Horne, Houck, Jura, Jura, Jura, Jura, Jura, Jura, Jura, Jura, Jura, Kawka, Kilic, Kilic, Kilic, Kilic, Klein, Kleinman, Koester, Koester, Koester, Koester, Koester, Koester, Lacombe, Lambert, Liebert, Lisse, Lisse, Lisse, Lodders, Malfait, Maxted, McCook, McCord, McLean, Melis, Morbidelli, Mullally, Napiwotzki, Napiwotzki, Paquette, Patterson, Probst, Probst, Rayner, Reach, Reach, Rieke, Schultz, Shipman, Sion, Sion, Skrutskie, Song, Su, Telesco, Thomas, Tokunaga, Tokunaga, Tremblay, van Maanen, van Maanen, Vauclair, von Hippel, Voss, Wachter, Wegner, Wehrse, Weidemann, Werner, Wesemael, Wesemael, Wolff, York, Zuckerman, Zuckerman, Zuckerman, Zuckerman, Zuckerman, Zuckerman, Zuckerman   +141 more
core   +1 more source

The close circumstellar environment of the semi-regular S-type star Pi^1 Gruis [PDF]

, 2008
We study the close circumstellar environment of the nearby S-type star Pi^1 Gruis using high spatial-resolution, mid-infrared observations from the ESO/VLTI.
A. Jorissen, A. Quirrenbach, B. Lopez, Beckwith, Bedding, Begemann, Blommaert, Chen, Chen, Chesneau, Chiu, Cruzalèbes, Davis, Dominik, Dupac, Egan, Engelke, Feast, Feinstein, Ferrarotti, Fitzpatrick, Frankowski, Gail, Groenewegen, Gustafsson, Heras, Heras, Huggins, Ivezic, Jaffe, Johnson, Jorissen, Judge, K. Ohnaka, Knapp, Knapp, Knapp, Knapp, Knapp, Leinert, Little-Marenin, Little-Marenin, Lorenz-Martins, Lovas, Makarov, Mastrodemos, Mathis, Matsuura, Mendoza, Mennesson, Merrill, Mitchell, O. Chesneau, Ohnaka, Ohnaka, Onaka, Ossenkopf, P. Cruzalèbes, Pauls, Perrin, Perrin, Perryman, Plez, Plez, Plez, Richichi, Rieke, Rowan-Robinson, S. Sacuto, Sahai, Simpson, Sloan, Sloan, Sloan, Smith, Smith, Smith, Sopka, Stencel, Thomas, Tipping, Tsuji, Tsuji, Udry, Van Belle, Van Belle, Van Belle, van der Veen, Van Eck, Van Eck, Vanture, Verhoelst, Volk, Waelkens, Weiner, Weiner, Weiner, Weiner, Weintraub, Whitelock, Yamamura, Young   +101 more
core   +2 more sources

Chiroptical properties of membrane glycerophospholipids and their chiral backbones

Chirality, Volume 36, Issue 3, March 2024.
Examination of the interaction of glycerophospholipids with circularly polarized light suggests that direct induction of symmetry breaking to membrane lipids by chiral photons is unlikely. However, anisotropy spectra of certain analogs indicate potential alternative mechanisms for the origins of membrane lipid homochirality, providing insights into the
Jana Bocková, Adrien D. Garcia, Nykola C. Jones, Søren V. Hoffmann, Cornelia Meinert   +4 more
wiley   +1 more source

Circumstellar dust [PDF]

The presence of dust in the general interstellar medium is inferred from the extinction, polarization, and scattering of starlight; the presence of dark nebulae; interstellar depletions; the observed infrared emission around certain stars and various ...
Dwek, E.
core   +1 more source

Disentangling the Origin and Heating Mechanism of Supernova Dust: Late-Time Spitzer Spectroscopy of the Type IIn SN 2005ip [PDF]

, 2010
This paper presents late-time near-infrared and {\it Spitzer} mid-infrared photometric and spectroscopic observations of warm dust in the Type IIn SN 2005ip in NGC 2906.
Chevalier, Roger A., Dwek, Eli, Fox, Ori D., Leisenring, Jarron M., Skrutskie, Michael F., Sugerman, Ben E. K.   +5 more
core   +3 more sources

The structure of circumstellar shells [PDF]

This document provides a report on research activities carried out with the support of NASA grant NAG 5-1174, the Structure of Circumstellar Shells, funded under the Astrophysics Data Program.
Fix, John D.
core   +1 more source

Strong dust processing in circumstellar discs around 6 RV Tauri stars. Are dusty RV Tauri stars all binaries?

, 2005
We present extended Spectral Energy Distributions (SEDs) of seven classical RV Tauri stars, using newly obtained submillimetre continuum measurements and Geneva optical photometry supplemented with literature data.
Alcock, Bessell, Bujarrabal, C. Dominik, Cardelli, Close, Dawson, Dominik, Gehrz, Gehrz, Giridhar, Goldsmith, H. Dejonghe, H. Van Winckel, Hakkila, Hildebrand, Holland, Jura, Jura, Jura, Kurucz, L. B. F. M Waters, , Lloyd Evans, Lloyd Evans, Maas, Matsuura, Neckel, Pollard, Pollard, S. De Ruyter, Savage, Shenton, Sopka, Sánchez Contreras, Van Winckel, Van Winckel, Van Winckel, Wahlgren, Waters   +38 more
core   +1 more source

High Spatial Resolution Mid-IR Imaging of V838 Monocerotis: Evidence of New Circumstellar Dust Creation [PDF]

, 2008
We report high spatial resolution 11.2 and 18.1 μm imaging of V838 Monocerotis obtained with Gemini Observatory’s Michelle instrument in 2007 March. Strong emission is observed from the unresolved stellar core of V838 Mon in our Gemini imagery and is ...
J. Wisniewski, M. Clampin, K. Bjorkman, R. Barry   +3 more
semanticscholar   +1 more source