Results 81 to 90 of about 6,825 (205)

Carbon Materials With Conductivity Gradients Allow Dynamic Screening of Steep Temperature Differences Along Thin Films

Advanced Functional Materials, Volume 34, Issue 45, November 5, 2024.
Infusion withdrawal coating allows impregnation of cellulose with various FeCl3 concentrations. Carbonization leads then to gradual changes in the carbon microstructure and transport properties. This results in an exciting material with a controllable temperature gradient. Abstract Carbon materials comprise a wide range of microstructures and excellent
Alexander Berger, Marius Schöttle, Flora Lebeda, Holger Schmalz, Peter Bösecke, Sabine Rosenfeldt, Andreas Greiner, Markus Retsch   +7 more
wiley   +1 more source

Origins of Super Jupiters: TOI-2145b has a Moderately Eccentric and Nearly Aligned Orbit

The Astronomical Journal
Super Jupiters are giant planets with several Jupiter masses. It remains an open question whether these planets originate with such high masses or grow through collisions.
Jiayin Dong, Ashley Chontos, George Zhou, Gudmundur Stefansson, Songhu Wang, Chelsea X. Huang, Arvind F. Gupta, Samuel Halverson, Shubham Kanodia, Jacob K. Luhn, Suvrath Mahadevan, Andrew Monson, Jaime A. Alvarado-Montes, Joe P. Ninan, Paul Robertson, Arpita Roy, Christian Schwab, Jason T. Wright   +17 more
doaj   +1 more source

Theoretical efficiency of the Princeton two-element echelle spectrograph [PDF]

Echelle spectrometer for use with spaceborne stellar telescope in Advanced Princeton Satellite ...
Hemstreet, H. S., Markle, D. A., Wissinger, A. B.   +2 more
core   +1 more source

The kinematics of the bi-lobal supernova remnant G 65.3+5.7 - Paper II

, 2004
Further deep, narrow-band images in the light of [O III] 5007 A have been added to the previous mosaic of the faint galactic supernova remnant G 65.3+5.7.
C. D. Goudis, Charles, D. J. Harman, F. Mavromatakis, Gaensler, Gull, J. A. López, J. Meaburn, Kesteven, Klein, Lozinskaya, M. P. Redman, Mavromatakis, McKee, Meaburn, Meaburn, P. Boumis, Raymond, Shull Jr   +18 more
core   +1 more source

Radial Velocity Prospects Current and Future: A White Paper Report prepared by the Study Analysis Group 8 for the Exoplanet Program Analysis Group (ExoPAG) [PDF]

, 2015
[Abridged] The Study Analysis Group 8 of the NASA Exoplanet Analysis Group was convened to assess the current capabilities and the future potential of the precise radial velocity (PRV) method to advance the NASA goal to "search for planetary bodies and ...
Anglada, Guillem, Blake, Cullen, Collier-Cameron, Andrew, Crepp, Justin, Dumusque, Xavier, Fischer, Debra, Furesz, Gabor, Gaudi, Scott, Haywood, Raphaëlle, Latham, Dave, Mahadevan, Suvrath, Makarov, Valeri, Marcy, Geoff, Muirhead, Philip, Plavchan, Peter, Prato, Lisa, Quirrenbach, Andreas, Stapelfeldt, Karl, Vanderburg, Andrew, White, Russel   +19 more
core   +1 more source

Chromospheric Activity and Jitter Measurements for 2630 Stars on the California Planet Search

, 2010
We present time series measurements of chromospheric activity for more than 2600 main sequence and subgiant stars on the California Planet Search (CPS) program with spectral types ranging from about F5V to M4V for main sequence stars and from G0IV to ...
Debra Fischer, Fischer, Gizis, Hall, Henry, Howard Isaacson, Johnson, Mamajek, Middelkoop, Paulson, Saar, Saar, Wright   +12 more
core   +1 more source

A Frequency Comb calibrated Solar Atlas

, 2013
The solar spectrum is a primary reference for the study of physical processes in stars and their variation during activity cycles. In Nov 2010 an experiment with a prototype of a Laser Frequency Comb (LFC) calibration system was performed with the HARPS ...
Esposito, M., Gonzalez Hernandez, J., Holzwarth, R., Hänsch, T., Lo Curto, G., Manescau, A., Molaro, P., Monai, S., Pasquini, L., Probst, R., Rebolo, R., Steinmetz, T., Udem, T., Wilken, T.   +13 more
core   +1 more source

The ∼50 Myr Old TOI-942c is Likely on an Aligned, Coplanar Orbit and Losing Mass

The Astronomical Journal
We report the observation of the transiting planet TOI-942c, a Neptunian planet orbiting a young K-type star approximately 50 Myr years old. Using the Keck/High Resolution Echelle Spectrometer, we observed a partial transit of the planet and detected an ...
Huan-Yu Teng, Fei Dai, Andrew W. Howard, Howard Isaacson, Ryan A. Rubenzahl, Isabel Angelo, Alex S. Polanski   +6 more
doaj   +1 more source

Cavity Enhanced Optical Vernier Spectroscopy, Broad Band, High Resolution, High Sensitivity

, 2007
A femtosecond frequency comb provides a vast number of equidistantly spaced narrow band laser modes that can be simultaneously tuned and frequency calibrated with 15 digits accuracy.
A. Bartels, Albert Schliesser, Björn Stein, Christoph Gohle, J. E. Mack, K. An, P. H. Krupenie, T. Gherman, Theodor W. Hänsch, Thomas Udem   +9 more
core   +1 more source

The Impact of Observing Cadence and Undetected Companions on the Accuracy of Planet Mass Measurements from Radial Velocity Monitoring

The Astronomical Journal
We conduct experiments on both real and synthetic radial velocity (RV) data to quantify the impact that observing cadence, the number of RV observations, and undetected companions all have on the accuracy of small planet mass measurements.
Joseph M. Akana Murphy, Rafael Luque, Natalie M. Batalha   +2 more
doaj   +1 more source