Zobrazeno 1 - 10
of 19 833
pro vyhledávání: '"Aikawa, A"'
We investigate chemistry in the compression layer behind the interstellar shock waves, where molecular cloud formation starts. We perform three-dimensional magnetohydrodynamics simulations of converging flows of atomic gas with shock parameters of in
Externí odkaz:
http://arxiv.org/abs/2411.12394
Autor:
Jeong, Jae-Hong, Lee, Jeong-Eun, Lee, Seonjae, Baek, Giseon, Kang, Ji-Hyun, Lee, Seokho, Kim, Chul-Hwan, Yun, Hyeong-Sik, Aikawa, Yuri, Herczeg, Gregory J., Johnstone, Doug, Cieza, Lucas
We present an investigation of Complex Organic Molecules (COMs) in the spatially resolved Keplerian disk around V883 Ori, an eruptive young star, based on a spectral survey carried out with ALMA in Band 6 (220.7$-$274.9 GHz). We identified about 3,70
Externí odkaz:
http://arxiv.org/abs/2411.03826
Autor:
Chahine, Layal, Ceccarelli, Cecilia, De Simone, Marta, Chandler, Claire J., Codella, Claudio, Podio, Linda, López-Sepulcre, Ana, Svoboda, Brian, Sabatini, Giovanni, Sakai, Nami, Loinard, Laurent, Vastel, Charlotte, Balucani, Nadia, Rimola, Albert, Ugliengo, Piero, Aikawa, Yuri, Bianchi, Eleonora, Bouvier, Mathilde, Caselli, Paola, Charnley, Steven, Cuello, Nicolás, Hanawa, Tomoyuki, Johnstone, Doug, Maureira, Maria José, Ménard, Francois, Shirley, Yancy, Testi, Leonardo, Yamamoto, Satoshi
Molecular deuteration is a powerful diagnostic tool for probing the physical conditions and chemical processes in astrophysical environments. In this work, we focus on formaldehyde deuteration in the protobinary system NGC\,1333 IRAS\,4A, located in
Externí odkaz:
http://arxiv.org/abs/2408.15517
Autor:
Yamato, Yoshihide, Aikawa, Yuri, Guzmán, Viviana V., Furuya, Kenji, Notsu, Shota, Cataldi, Gianni, Öberg, Karin I., Qi, Chunhua, Law, Charles J., Huang, Jane, Teague, Richard, Gal, Romane Le
Characterizing the chemistry of complex organic molecules (COMs) at the epoch of planet formation provides insights into the chemical evolution of the interstellar medium (ISM) and the origin of organic materials in our Solar System. We report a dete
Externí odkaz:
http://arxiv.org/abs/2407.21518
Autor:
Maureira, M. J., Pineda, J. E., Liu, H. B., Testi, L., Segura-Cox, D., Chandler, C., Johnstone, D., Caselli, P., Sabatini, G., Aikawa, Y., Bianchi, E., Codella, C., Cuello, N., Fedele, D., Friesen, R., Loinard, L., Podio, L., Ceccarelli, C., Sakai, N., Yamamoto, S.
Publikováno v:
A&A 689, L5 (2024)
When the planet formation process begins in the disks surrounding young stars is still an open question. Annular substructures such as rings and gaps in disks are intertwined with planet formation, and thus their presence or absence is commonly used
Externí odkaz:
http://arxiv.org/abs/2407.20074
Autor:
Gavino, Sacha, Jørgensen, Jes K., Sharma, Rajeeb, Yang, Yao-Lun, Li, Zhi-Yun, Tobin, John J., Ohashi, Nagayoshi, Takakuwa, Shigehisa, Plunkett, Adele, Kwon, Woojin, de Gregorio-Monsalvo, Itziar, Lin, Zhe-Yu Daniel, Santamaría-Miranda, Alejandro, Aso, Yusuke, Sai, Jinshi, Aikawa, Yuri, Tomida, Kengo, Koch, Patrick M., Lee, Jeong-Eun, Lee, Chang Won, Lai, Shih-Ping, Looney, Leslie W., Narayanan, Suchitra, Phuong, Nguyen Thi, Thieme, Travis J., Hoff, Merel L. R. van 't, Willians, Jonathan P., Yen, Hsi-Wei
We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of the binary Class 0 protostellar system BHR 71 IRS1 and IRS2 as part of the Early Planet Formation in Embedded Disks (eDisk) ALMA Large Program. We describe the $^{12}$CO (
Externí odkaz:
http://arxiv.org/abs/2407.17249
Methane (CH4) is one of the major components of the icy mantle of cosmic dust prevalent in cold, dense regions of interstellar media, playing an important role in the synthesis of complex organic molecules and prebiotic molecules. Solid CH4 is consid
Externí odkaz:
http://arxiv.org/abs/2407.13057
Publikováno v:
European Physical Journal A 60 (2024) 195
The isomeric ratios of $^{198}$Au, $^{197}$Hg and $^{195}$Hg produced by $\alpha$-particle induced reactions on natural platinum were investigated experimentally up to 29 MeV by using the standard stacked foil activation technique and $\gamma$-ray sp
Externí odkaz:
http://arxiv.org/abs/2407.05081
Autor:
Podio, L., Ceccarelli, C., Codella, C., Sabatini, G., Segura-Cox, D., Balucani, N., Rimola, A., Ugliengo, P., Chandler, C. J., Sakai, N., Svoboda, B., Pineda, J., De Simone, M., Bianchi, E., Caselli, P., Isella, A., Aikawa, Y., Bouvier, M., Caux, E., Chahine, L., Charnley, S. B., Cuello, N., Dulieu, F., Evans, L., Fedele, D., Feng, S., Fontani, F., Hama, T., Hanawa, T., Herbst, E., Hirota, T., Jiménez-Serra, I., Johnstone, D., Lefloch, B., Gal, R. Le, Loinard, L., Liu, H. Baobab, López-Sepulcre, A., Maud, L. T., Maureira, M. J., Menard, F., Miotello, A., Moellenbrock, G., Nomura, H., Oba, Y., Ohashi, S., Okoda, Y., Oya, Y., Sakai, T., Shirley, Y., Testi, L., Vastel, C., Viti, S., Watanabe, N., Watanabe, Y., Zhang, Y., Zhang, Z. E., Yamamoto, S.
Publikováno v:
A&A 688, L22 (2024)
Recent observations suggest that planets formation starts early, in protostellar disks of $\le10^5$ yrs, which are characterized by strong interactions with the environment, e.g., through accretion streamers and molecular outflows. To investigate the
Externí odkaz:
http://arxiv.org/abs/2407.04813
We investigate the chemical evolution of complex organic molecules (COMs) in turbulent disks using gas-ice chemical reaction network simulations. We trace trajectories of dust particles considering advection, turbulent diffusion, gas drag, and vertic
Externí odkaz:
http://arxiv.org/abs/2406.17367