Zobrazeno 1 - 10
of 279
pro vyhledávání: '"Arce, Héctor"'
Autor:
Dunham, Michael M., Stephens, Ian W., Myers, Philip C., Bourke, Tyler L., Arce, Héctor G., Pokhrel, Riwaj, Pineda, Jaime E., Vargas, Joseph
We use 1-4" (300-1200 au) resolution 12CO(2-1) data from the MASSES (Mass Assembly of Stellar Systems and their Evolution with the SMA) project to measure the projected opening angles of 46 protostellar outflows in the Perseus Molecular Cloud, 37 of
Externí odkaz:
http://arxiv.org/abs/2408.12788
Autor:
Hsieh, Cheng-Han, Arce, Héctor G., Maureira, María José, Pineda, Jaime E., Segura-Cox, Dominique, Mardones, Diego, Dunham, Michael M., Arun, Aiswarya
We surveyed nearly all the embedded protostars in seven nearby clouds (Corona Australis, Aquila, Chamaeleon I & II, Ophiuchus North, Ophiuchus, Serpens) with the Atacama Large Millimeter/submillimeter Array at 1.3mm observations with a resolution of
Externí odkaz:
http://arxiv.org/abs/2404.02809
Autor:
Huang, Bo, Girart, Josep M., Stephens, Ian W., Fernandez-Lopez, Manuel, Arce, Hector G., Carpenter, John M., Cortes, Paulo, Cox, Erin G., Friesen, Rachel, Gouellec, Valentin J. M. Le, Hull, Charles L. H., Karnath, Nicole, Kwon, Woojin, Li, Zhi-Yun, Looney, Leslie W., Megeath, Tom, Myers, Philip C., Murillo, Nadia M., Pineda, Jaime E., Sadavoy, Sarah, Sanchez-Monge, Alvaro, Sanhueza, Patricio, Tobin, John J., Zhang, Qizhou, Jackson, James M., Segura-Cox, Dominique
Publikováno v:
ApJL, 963:L31, 2024
We present 870 um polarimetric observations toward 61 protostars in the Orion molecular clouds, with ~400 au (1") resolution using the Atacama Large Millimeter/submillimeter Array. We successfully detect dust polarization and outflow emission in 56 p
Externí odkaz:
http://arxiv.org/abs/2402.07267
We adopt magnetohydrodynamics (MHD) simulations that model the formation of filamentary molecular clouds via the collision-induced magnetic reconnection (CMR) mechanism under varying physical conditions. We conduct radiative transfer using RADMC-3D t
Externí odkaz:
http://arxiv.org/abs/2308.06641
Autor:
Kong, Shuo, Arce, Héctor G., Tobin, John J., Zhang, Yichen, Maureira, María José, Kratter, Kaitlin M., Pillai, Thushara G. S.
We report high-resolution ALMA observations toward a massive protostellar core C1-Sa ($\sim$30 M$_\odot$) in the Dragon Infrared Dark Cloud. At the resolution of 140 AU, the core fragments into two kernels (C1-Sa1 and C1-Sa2) with a projected separat
Externí odkaz:
http://arxiv.org/abs/2305.02286
In this paper, we carry out a pilot parameter exploration for the collision-induced magnetic reconnection (CMR) mechanism that forms filamentary molecular clouds. Following Kong et al. (2021), we utilize Athena++ to model CMR in the context of resist
Externí odkaz:
http://arxiv.org/abs/2302.08336
Autor:
Hsieh, Cheng-Han, Arce, Héctor G., Li, Zhi-Yun, Dunham, Michael, Offner, Stella, Stephens, Ian W., Stutz, Amelia, Megeath, Tom, Kong, Shuo, Plunkett, Adele, Tobin, John J., Zhang, Yichen, Mardones, Diego, Pineda, Jaime E., Stanke, Thomas, Carpenter, John
We present Atacama Large Millimeter/submillimeter Array observations of the $\sim$10 kAU environment surrounding 21 protostars in the Orion A molecular cloud tracing outflows. Our sample is composed of Class 0 to flat-spectrum protostars, spanning th
Externí odkaz:
http://arxiv.org/abs/2302.03174
Autor:
Takemura, Hideaki, Nakamura, Fumitaka, Arce, Héctor G., Schneider, Nicola, Ossenkopf-Okada, Volker, Kong, Shuo, Ishii, Shun, Dobashi, Kazuhito, Shimoikura, Tomomi, Sanhueza, Patricio, Tsukagoshi, Takashi, Padoan, Paolo, Klessen, Ralf S., Goldsmith, Paul. F., Burkhart, Blakesley, Sánchez-Monge, Dariusz C. Lis Álvaro, Shimajiri, Yoshito, Kawabe, Ryohei
The mass distribution of dense cores is a potential key to understand the process of star formation. Applying dendrogram analysis to the CARMA-NRO Orion C$^{18}$O ($J$=1--0) data, we identify 2342 dense cores, about 22 \% of which have virial ratios
Externí odkaz:
http://arxiv.org/abs/2211.10215
Autor:
Heimsoth, Daniel J., Stephens, Ian W., Arce, Hector G., Bourke, Tyler L., Myers, Philip C., Dunham, Michael M.
We present a comprehensive analysis on the evolution of envelopes surrounding protostellar systems in the Perseus molecular cloud using data from the MASSES survey. We focus our attention to the C$^{18}$O(2--1) spectral line, and we characterize the
Externí odkaz:
http://arxiv.org/abs/2112.09848
We adopt the deep learning method CASI-3D (Convolutional Approach to Structure Identification-3D) to systemically identify protostellar outflows in 12CO and 13CO observations of the nearby molecular clouds, Ophiuchus, Taurus, Perseus and Orion. The t
Externí odkaz:
http://arxiv.org/abs/2111.07995