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http://dx.doi.org/10.5467/JKESS.2010.31.4.370

Radio Observation of L1521F using HCN (J=1-0) Line  

Sohn, Jung-Joo (Department of Earth Science Education, Korea National University of Education)
Lee, Chang-Won (Korea Astronomy and Space Science Institute)
Publication Information
Journal of the Korean earth science society / v.31, no.4, 2010 , pp. 370-377 More about this Journal
Abstract
In this study, we investigated the kinematical properties of the L1521F-IRS in Taurus region using HCN (J=1-0) molecular line. The high resolution mapping has carried out by $5{\times}5$ point observations covering $3.7 area using a 12-m telescope of Arizona Radio Observatory in Tucsan, USA. L1521F which harbors the faint infrared L1521F-IRS, displayed a strong central concentration of integrated intensity in HCN without serious molecular depletion. It showed a symmetric kinematical structure with the opposite infall motion in either side of the central cores. It is a direct evidence of bipolar outflows in the core of L1521F.
Keywords
astronomy; radio observation; interstellar medium; star formation;
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1 Sohn, J., Lee, C.W., Park, Y.-S., Lee, H.M., and Myers, P.C., 2007, Probing Inward Motions in Starless Cores Using the HCN (J=1-0) Hyperfine Transitions: A Pointing Survey toward Central Regions, The Astrophysical Journal, 664, 928-941.   DOI
2 Tafalla, M., Santiago-Garcia, J., Myers, P.C., Caselli, P., Walmsley, C.M., and Crapsi, A., 2006, On the internal structure of starless cores, II. A moleclar survey of L498B and L517B. Astronomy and Astrophysics, 455, 577.   DOI
3 Terebey, S., Fich, M., Noriega-Crespo, A., Padgett, D.L., Fukagawa, M., 2009, Far-Infrared Observations of the Very Low Luminosity Embedded Source L1521F-IRS in the Taurus Star-Forming Region. The Astrophysical Journal, 696, 1918-1930.   DOI
4 Werner, M.W., Roellig, T.L., Low, F.J., Rieke, G.H., Rieke, M., 2004, The Spitzer Space Telescope Mission. The Astrophysical Journal Supplement Series, 154, 1-9.   DOI
5 Young, C.H., Bourke, T.L., Young, K.E., Evans, N.J., II, Jørgensen, J.K., 2004, Submillimeter Common-User Bolometer Array Mapping of Spitzer c2d Small Clouds and Cores. The Astronomical Journal, 132, 1998-2013.
6 Lee, C.W., Myers, P.C., and Tafalla, M., 2001, A Survey for Infall Motions toward Starless Cores. II. CS (2-1) and $N_2H^+$ (1-0) Mapping Observations. The Astrophysical Journal Supplement Series, 136, 703-734.   DOI
7 Lee, J.-E., Bergin, E.A., and Evans, N.J., II 2004, Evolution of Chemistry and Molecular Line Profiles during Protostellar Collapse. The Astrophysical Journal, 617, 360-383.   DOI
8 Mardones, D., Myers, P.C., Tafalla, M., Wilner, D.J., Bachiller, R., and Garay, G., 1997, A Search for Infall Motions toward Nearby Young Stellar Objects. Astrophysical Journal, 489, 719.   DOI
9 Millar, T.J., Bennett, A., and Herbst, E., 1989, Deuterium fractionation in dense interstellar clouds. Astrophysical Journal, 340, 906-920.   DOI
10 Murakami, H., Baba, H., Barthel, P. et al., 2007, The Infrared Astronomical Mission AKARI, Publications of the Astronomical Society of Japan, 59, S369, S376.
11 Onishi, T., Mizuno, A., and Fukui, Y., 1999, A Very Dense Low-Mass Molecular Condensation in Taurus: Evidence for the Moment of Protostellar Core Formation. Publications of the Astronomical Society of Japan, 51, 257-262.   DOI
12 Oliveira, C.M., Hébrard, G., Howk, C.J., Kruk, J.W., Chayer, P., and Moos, H.W., 2003, Interstellar Deuterium, Nitrogen, and Oxygen Abundances toward GD 246, WD 2331-475, HZ 21, and Lanning 23: Results from the FUSE Mission. The Astrophysical Journal, 587, 235-255.   DOI
13 Pilbratte, G.L., Riedinger, J.R., Passvogel, T. et al. 2010, Herschel Space Observatory. An ESA faccility for far-infrared and submilimetre astronomy, Astronomy and Astrophysics, 518, L1-L6.   DOI
14 Bourke, T.L., Myers, P.C., Evans, N.J., II, Dunham, M.M., Kauffmann, J., et al. 2006, The Spitzer c2d Survey of Nearby Dense Cores. II. Discovery of a Low-Luminosity Object in the "Evolved Starless Core" L1521F. The Astrophysical Journal, 649, L37-L40.   DOI
15 Rawlings, J.M., Redman, M.P., Keto, E., and Williams, P.A., 2004, $HCO^+$ emission excess in bipolar outflows, Monthly Notices of the Royal Astronomical Society, 351, 1054-1062.   DOI
16 Aikawa, Y., Herbst, E., Roberts, H., Caselli, P., 2005, Molecular Evolution in Collapsing Prestellar Cores. III. Contraction of a Bonnor-Ebert Sphere. The Astrophysical Journal, 620, 330-346.   DOI
17 Beichman, C.A., Myers, P.C., Emerson, J.P., Harris, S., Mathieu, R., Benson, P.J., Jennings, R.E., 1986, Candidate solar-type protostars in nearby molecular cloud cores. Astrophysical Journal, 307, 337-349.   DOI
18 Buisson, G., Desbats, L., Duvert, G., Forveille, T., Gras, R., Guilloteau, S., and Valiron, P., 1994, CLASS Manual, Granoble: IRAM
19 Crapsi, A., Caselli, P., Walmsley, C.M., Tafalla, M., Lee, C.W., Bourke, T.L., Myers, P.C., 2004, Observations of L1521F: A highly evolved starless core. Astronomy and Astrophysics, 420, 957-974.   DOI
20 Crapsi, A., Caselli, P., Walmsley, C.M., Myers, P.C., Tafalla, M., Lee, C.W., and Bourke, T.L., 2005, Probing the Evolutionary Status of Starless Cores through $N_2H^+$ and $N_2D^+$ Observations. The Astrophysical Journal, 619, 379-406.   DOI
21 Dalgarno, A. and Lepp, S., 1984, Deuterium fractionation mechanisms in interstellar clouds. Astrophysical Journal, 287, L47-L50.   DOI
22 Lee, C.W. and Myers, P.C., 1999, A Catalog of Optically Selected Cores. The Astrophysical Journal Supplement Series, 123, 233-250.   DOI
23 Jijina, J., Myers, P.C., and Adams, F.C., 1999, Dense Cores Mapped in Ammonia: A Database. The Astrophysical Journal Supplement Series, 125, 161-236.   DOI