Circumnuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES)
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| Název: | Circumnuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES) |
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| Autoři: | Sofue, Yoshiaki, Oka, Tomoharu, Longmore, Steven N., Walker, Daniel, Ginsburg, Adam, Henshaw, Jonathan D., Bally, John, Barnes, Ashley T., Battersby, Cara, Colzi, Laura, Ho, Paul, Jimenez-Serra, Izaskun, Mills, Elizabeth, Petkova, Maya, 1990, Sormani, Mattia C., Wallace, Jennifer, Armijos-Abendano, Jairo, Dutkowska, Katarzyna M., Enokiya, Rei, Garcia, Pablo, Gramze, Savannah, Henkel, Christian, Hu, Yue, Immer, Katharina, Iwata, Yuhei, Karoly, Janik, Klessen, Ralf S., Kohno, Kotaro, Krumholz, Mark R., Morris, Mark R., Pineda, Jaime E., Martin, Sergio, Requena-Torres, Miguel Angel, Rivilla, Victor M., Riquelme-Vasquez, Denise, Sanchez-Monge, Alvaro, Santa-Maria, Miriam G., Smith, Howard A., Tolls, Volker, Wang, Q. Daniel |
| Zdroj: | Publication of the Astronomical Society of Japan. 77(4):L55-L62 |
| Témata: | Galaxy: center, ISM: kinematics and dynamics, ISM: molecules, Galaxy: structure, ISM: clouds |
| Popis: | We analyze the CS ( J = 2-1 ) line cube from the internal data release obtained by the large-scale program "ALMA CMZ Exploration Survey ( ACES ) " to investigate the kinematic structure of the innermost similar to 10 pc region of the Galaxy, which contains the high-velocity compact cloud (HVCC) at (l, b, vLSR) similar to(+0 .degrees 02, -0 .degrees 02, 100 km s-1) ( hereafter G0.02 ) . The longitude-velocity diagram (LVD) of the cloud draws an elliptical structure, which is interpreted as an orbital trajectory in the (l, vLSR) space of a noncircular ( eccentric ) motion of the molecular gas in the gravitational potential of an extended mass distribution in the central 10 pc of the Galaxy. We argue that G0.02 is a kinematic tracer of the inner potential, a rare case of a dense an eccentric orbit in the nuclear field. |
| Popis souboru: | electronic |
| Přístupová URL adresa: | https://research.chalmers.se/publication/547673 https://research.chalmers.se/publication/547673/file/547673_Fulltext.pdf |
| Databáze: | SwePub |
Nájsť tento článok vo Web of Science | Abstrakt: | We analyze the CS ( J = 2-1 ) line cube from the internal data release obtained by the large-scale program "ALMA CMZ Exploration Survey ( ACES ) " to investigate the kinematic structure of the innermost similar to 10 pc region of the Galaxy, which contains the high-velocity compact cloud (HVCC) at (l, b, vLSR) similar to(+0 .degrees 02, -0 .degrees 02, 100 km s-1) ( hereafter G0.02 ) . The longitude-velocity diagram (LVD) of the cloud draws an elliptical structure, which is interpreted as an orbital trajectory in the (l, vLSR) space of a noncircular ( eccentric ) motion of the molecular gas in the gravitational potential of an extended mass distribution in the central 10 pc of the Galaxy. We argue that G0.02 is a kinematic tracer of the inner potential, a rare case of a dense an eccentric orbit in the nuclear field. |
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| ISSN: | 2053051x 00046264 |
| DOI: | 10.1093/pasj/psaf072 |