Zobrazeno 1 - 10
of 398
pro vyhledávání: '"SAKON, Itsuki"'
Publikováno v:
ApJ,941, 190, 2022
We report near-infrared (2.5--5 micron) long-slit (~ 30 arcsec) spectroscopy of a young stellar object in the direction toward the Galactic center with the Infrared Camera on board the AKARI satellite. The present target is suggested to be AFGL 2006
Externí odkaz:
http://arxiv.org/abs/2212.11424
Autor:
Mori, Tamami, Onaka, Takashi, Sakon, Itsuki, Buragohain, Mridusmita, Takahata, Naoto, Sano, Yuji, Pathak, Amit
The observed large variation in the abundance of deuterium (D) in the interstellar medium (ISM) suggests that a significant fraction of D may be depleted into polycyclic aromatic hydrocarbons (PAHs). Signatures of deuteration of PAHs are expected to
Externí odkaz:
http://arxiv.org/abs/2205.09936
Autor:
Naito, Hiroyuki, Tajitsu, Akito, Ribeiro, Valèrio A. R. M., Arai, Akira, Maehara, Hiroyuki, Kouzuma, Shinjirou, Iijima, Takashi, Okazaki, Atsuo T., Watanabe, Makoto, Takagi, Seiko, Watanabe, Fumitake, Sakon, Itsuki, Sadakane, Kozo
Morphology of nova ejecta is essential for fully understanding the physical processes involved in nova eruptions. We studied the 3D morphology of the expanding ejecta of the extremely slow nova V1280 Sco with a unique light curve. Synthetic line prof
Externí odkaz:
http://arxiv.org/abs/2205.02266
Autor:
Endo, Izumi, Lau, Ryan M., Sakon, Itsuki, Onaka, Takashi, Williams, Peredur M., Shenavrin, Victor I.
We present the detection of a broad 8 $\mu$m feature in newly formed dust around the carbon-rich Wolf-Rayet (WC) binary WR 125 from N-band low-resolution (NL; R$\sim$250) spectroscopy between 7.3-13.6 $\mu$m and N-band (11.7 $\mu$m) and Q-band (18.8
Externí odkaz:
http://arxiv.org/abs/2204.13259
Autor:
Vats, Akant, Pathak, Amit, Onaka, Takashi, Buragohain, Mridusmita, Sakon, Itsuki, Endo, Izumi
This work presents theoretical calculations of infrared spectra of nitrogen (N)-containing polycyclic aromatic hydrocarbon (PAH) molecules with incorporation of N, NH and NH$_2$ using density functional theory (DFT). The properties of their vibration
Externí odkaz:
http://arxiv.org/abs/2112.14453
We discover two infrared objects that show deep absorption features of H2O, CO2, and CO ices in the AKARI/Infrared Camera (IRC) slit-less spectroscopic survey of the Galactic plane in 2.5--13 micron. Both objects are located neither in known star-for
Externí odkaz:
http://arxiv.org/abs/2105.11660
Autor:
Lau, Ryan M., Hankins, Matthew J., Han, Yinuo, Endo, Izumi, Moffat, Anthony F. J., Ressler, Michael E., Sakon, Itsuki, Sanchez-Bermudez, Joel, Soulain, Anthony, Stevens, Ian R., Tuthill, Peter G., Williams, Peredur M.
WR 112 is a dust-forming carbon-rich Wolf-Rayet (WC) binary with a dusty circumstellar nebula that exhibits a complex asymmetric morphology, which traces the orbital motion and dust formation in the colliding winds of the central binary. Unraveling t
Externí odkaz:
http://arxiv.org/abs/2008.01093
Autor:
Burgarella, Denis, Bunker, Andrew, Bouwens, Rychard, Pagani, Laurent, Afonso, Jose, Atek, Hakim, Audard, Marc, Cabrit, Sylvie, Caputi, Karina, Ciesla, Laure, Conselice, Christopher, Cooray, Asantha, Cresci, Giovanni, Curti, Mirko, Espinosa, Jose Miguel Rodriguez, Ferrari, Marc, Kobayashi, Chiaki, Lagarde, Nadege, Maestro, Jesus Gallego, Maiolino, Roberto, Malek, Katarzyna, Mannucci, Filippo, Montillaud, Julien, Oesch, Pascal, Pearson, Chris, Pollo, Agnieszka, Reyle, Céline, Rosario, David, Sakon, Itsuki, Schaerer, Daniel, Sharples, Ray, Sobral, David, Zamkotsian, Frederic
We propose a new mission called Space Project for Astrophysical and Cosmological Exploration (SPACE) as part on the ESA long term planning Voyage 2050 programme. SPACE will study galaxy evolution at the earliest times, with the key goals of charting
Externí odkaz:
http://arxiv.org/abs/2007.14869
Autor:
Lau, Ryan M., Eldridge, J. J., Hankins, Matthew J., Lamberts, Astrid, Sakon, Itsuki, Williams, Peredur M.
We present a dust spectral energy distribution (SED) and binary stellar population analysis revisiting the dust production rates (DPRs) in the winds of carbon-rich Wolf-Rayet (WC) binaries and their impact on galactic dust budgets. DustEM SED models
Externí odkaz:
http://arxiv.org/abs/2006.08695
Publikováno v:
The Astrophysical Journal, 892:11 (11pp), 2020 March 20
Polycyclic Aromatic Hydrocarbon (PAH) molecules have been long adjudged to contribute to the frequently detected distinct emission features at 3.3, 6.2, 7.7, 8.6, 11.2 and 12.7 {\mu}m with weaker and blended features distributed in the 3-20 {\mu}m re
Externí odkaz:
http://arxiv.org/abs/2003.10691