Results 31 to 40 of about 71,232 (305)

A Tale of Three Galaxies: Anomalous Dust Properties in IRASF10398+1455, IRASF21013-0739 and SDSSJ0808+3948

, 2014
On a galactic scale the 9.7um silicate emission is usually only seen in type 1 active galactic nuclei (AGNs). They usually also display a flat emission continuum at ~5--8um and the absence of polycyclic aromatic hydrocarbon (PAH) emission bands.
Hao, Lei, Li, Aigen, Xie, Yanxia
core   +1 more source

Anomalous radio emission from dust in the Helix [PDF]

, 2003
A byproduct of experiments designed to map the CMB is the recent detection of a new component of foreground Galactic emission. The anomalous foreground at ~ 10--30 GHz, unexplained by traditional emission mechanisms, correlates with 100um dust emission ...
A. C. S. Readhead, Beckert T., Boffi F. R., Calabretta M. R., Calabretta M. R., Caplan J., Davies R. D., Emerson D. T., L. Bronfman, L.‐A. Nyman, Leene A., Lemke D., M. C. Shepherd, Nyman L., Oliva E., Pottasch S. R., S. Casassus, Storey P. J., T. J. Pearson, Thomasson P., Zijlstra A. A.   +20 more
core   +2 more sources

A Tale of Three Galaxies: Deciphering the Infrared Emission of the Spectroscopically Anomalous Galaxies IRAS F10398+1455, IRAS F21013-0739 and SDSS J0808+3948

, 2015
The \textit{Spitzer}/Infrared Spectrograph spectra of three spectroscopically anomalous galaxies (IRAS~F10398+1455, IRAS~F21013-0739 and SDSS~J0808+3948) are modeled in terms of a mixture of warm and cold silicate dust, and warm and cold carbon dust ...
Hao, Lei, Li, Aigen, Nikutta, Robert, Xie, Yanxia   +3 more
core   +1 more source

A concentration of centimeter-sized grains in the Oph IRS 48 dust trap [PDF]

, 2015
Azimuthally asymmetric dust distributions observed with ALMA in transition disks have been interpreted as dust traps. We present VLA Ka band (34 GHz or 0.9 cm) and ALMA Cycle 2 Band 9 (680 GHz or 0.45 mm) observations at 0.2" resolution of the Oph IRS 48
Andrews, Sean, Birnstiel, Tilman, Pinilla, Paola, Ricci, Luca, Tobin, John, van der Marel, Nienke, van Kempen, Tim   +6 more
core   +3 more sources

Millimeter dust continuum emission revealing the true mass of giant molecular clouds in the Small Magellanic Cloud [PDF]

Astronomy & Astrophysics, 2007
CO observations have been so far the best way to trace molecular gas in external galaxies, but at low metallicity the gas mass deduced could be largely underestimated. At present, the kinematic information of CO data cubes are used to estimate virial masses and trace the total mass of the molecular clouds. Millimeter dust emission can also be used as a
Bot, Caroline, Boulanger, Francois, Rubio López, Mónica, Rantakyro, F.   +3 more
openaire   +2 more sources

Testing the Evolutionary Sequence of High Mass Protostars with CARMA [PDF]

, 2009
We present 1" resolution CARMA observations of the 3mm continuum and 95 GHz methanol masers toward 14 candidate high mass protostellar objects (HMPOs). Dust continuum emission is detected toward seven HMPOs, and methanol masers toward 5 sources.
Altenhoff, Beltrán, Beuther, Beuther, Bronfman, Codella, Codella, Cyganowski, Egan, Garay, Genzel, Haynes, Hildebrand, Hunter, Hunter, John M. Carpenter, Keto, Keto, Menten, Molinari, Molinari, Pandian, Perault, Qiu, Rathborne, Rathborne, Reid, Sault, Scott Schnee, Shepherd, Sridharan, Torrelles, Turner, Walmsley, Wang, Zapata, Zhang   +36 more
core   +2 more sources

Bayesian analysis of the molecular emission and dust continuum of protoplanetary disks

Astronomy & Astrophysics
Context. The MIRI instrument on board the James Webb Space Telescope probes the chemistry and dust mineralogy of the inner regions of protoplanetary disks. The observed spectra are unprecedented in their detail and reveal a rich chemistry with strong diversity between objects.
T. Kaeufer, M. Min, P. Woitke, I. Kamp, A. M. Arabhavi   +4 more
openaire   +2 more sources

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

Predictions of Dust Continuum Emission from a Potential Circumplanetary Disk: A Case Study of the Planet Candidate AB Aurigae b

The Astrophysical Journal
Gas-accreting planets embedded in protoplanetary disks are expected to show dust thermal emission from their circumplanetary disks (CPDs). However, a recently reported gas-accreting planet candidate, AB Aurigae b, has not been detected in (sub)millimeter
Yuhito Shibaike, Jun Hashimoto, Ruobing Dong, Christoph Mordasini, Misato Fukagawa, Takayuki Muto   +5 more
doaj   +1 more source

Dust traps and gas kinematic signatures in a crescent structure of a planet-forming disk

Frontiers in Astronomy and Space Sciences
In the past few years, ALMA unveiled a variety of substructures (rings, spirals, crescents) in the continuum emission of most protoplanetary disks imaged at high spatial resolution.
Greta Guidi, François Menard, Daniel J. Price, Daniel J. Price, Marion Villenave, Jie Ma   +5 more
doaj   +1 more source