Zobrazeno 1 - 10
of 9 174
pro vyhledávání: '"High resolution spèctroscopy"'
Autor:
Li, Sijia, Wang, Xin, Chen, Yuguang, Jones, Tucker, Treu, Tommaso, Glazebrook, Karl, He, Xianlong, Henry, Alaina, Meng, Xiao-Lei, Morishita, Takahiro, Roberts-Borsani, Guido, Yang, Lilan, Yu, Hao-Ran, Calabrò, Antonello, Castellano, Marco, Leethochawalit, Nicha, Metha, Benjamin, Nanayakkara, Themiya, Roy, Namrata, Vulcani, Benedetta
The electron density (${n_{\rm e}}$) of the interstellar medium (ISM) in star-forming galaxies is intimately linked to star formation and ionization condition. Using the high-resolution spectra obtained from the JWST NIRSpec micro shutter assembly (M
Externí odkaz:
http://arxiv.org/abs/2412.08382
Autor:
Mehdipour, Missagh, Brenneman, Laura W., Miller, Jon M., Costantini, Elisa, Behar, Ehud, Gallo, Luigi C., Kaastra, Jelle S., Laha, Sibasish, Nowak, Michael A.
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 11, Issue 1, 011008 (December 2024)
Black hole accretion in active galactic nuclei (AGN) is coupled to the evolution of their host galaxies. Outflowing winds in AGN can play an important role in this evolution through the resulting feedback mechanism. Multi-wavelength spectroscopy is k
Externí odkaz:
http://arxiv.org/abs/2412.03493
Autor:
Jahandar, Farbod, Doyon, René, Artigau, Étienne, Cook, Neil J., Cadieux, Charles, Donati, Jean-François, Cowan, Nicolas B., Cloutier, Ryan, Pelletier, Stefan, Alves-Brito, Alan, Martins, Jorge H. C., Shang, Hsien, Carmona, Andrés
We extend the methodology introduced by Jahandar et al. (2024) to determine the effective temperature and chemical abundances of 31 slowly-rotating solar neighborhood M dwarfs (M1-M5) using high-resolution spectra from CFHT/SPIRou. This group include
Externí odkaz:
http://arxiv.org/abs/2411.07377
Autor:
Savel, Arjun B., Bedell, Megan, Kempton, Eliza M. -R., Smith, Peter, Bean, Jacob L., Zhao, Lily L., Wong, Kaze W. K., Sanchez, Jorge A., Line, Michael R.
Ground-based high-resolution cross-correlation spectroscopy (HRCCS; R >~ 15,000) is a powerful complement to space-based studies of exoplanet atmospheres. By resolving individual spectral lines, HRCCS can precisely measure chemical abundance ratios,
Externí odkaz:
http://arxiv.org/abs/2411.07303
Autor:
Beltz, Hayley, Rauscher, Emily
Ultrahot Jupiters (UHJs), being the hottest class of exoplanets known, provide a unique laboratory for testing atmospheric interactions with internal planetary magnetic fields at a large range of temperatures. Thermal ionization of atmospheric specie
Externí odkaz:
http://arxiv.org/abs/2409.13840
Autor:
Artigau, Étienne, Cadieux, Charles, Cook, Neil J., Doyon, René, Dauplaise, Laurie, Arnold, Luc, Cadieux, Maya, Donati, Jean-François, Cristofari, Paul, Delfosse, Xavier, Fouqué, Pascal, Moutou, Claire, Larue, Pierre, Allart, Romain
The detection of stellar variability often relies on the measurement of selected activity indicators such as coronal emission lines and non-thermal emissions. On the flip side, the effective stellar temperature is normally seen as one of the key fund
Externí odkaz:
http://arxiv.org/abs/2409.07260
EXO 0748-676 is a well-studied, high-inclination, dipping, and eclipsing neutron star low-mass X-ray binary that has recently emerged from 16 years of quiescence into a new outburst. We present results from a 55.5 ks of XMM-Newton observation, focusi
Externí odkaz:
http://arxiv.org/abs/2408.02715
Publikováno v:
A&A 691, A170 (2024)
We present results of high-resolution spectroscopic observations of detached eclipsing binaries (DEBs) with total eclipses, for which UVES spectra were obtained during the phase of totality. With the additional, independent information on effective t
Externí odkaz:
http://arxiv.org/abs/2409.20144
Autor:
Candebat, Nils, Sacco, Giuseppe Germano, Magrini, Laura, Belfiore, Francesco, Van-der-Swaelmen, Mathieu, Zibetti, Stefano
Publikováno v:
A&A 692, A228 (2024)
Context: New spectroscopic surveys will increase the number of astronomical objects requiring characterization by over tenfold.. Machine learning tools are required to address this data deluge in a fast and accurate fashion. Most machine learning alg
Externí odkaz:
http://arxiv.org/abs/2409.10621
Autor:
McKay, Sam, Kuhn, Stephen J., Shen, Jiazhou, Li, Fankang, Doskow, Jak, Visser, Gerard, Parnell, Steven R., Burrage, Kaleb, Funama, Fumiaki, Pynn, Roger
We present a resonant-mode, transverse-field, radio-frequency (rf) neutron spin flipper design that uses high-temperature superconducting films to ensure sharp transitions between uniform magnetic field regions. Resonant mode allows for low power, hi
Externí odkaz:
http://arxiv.org/abs/2408.02438