Skip to main content Accessibility help
×
Home
Hostname: page-component-78dcdb465f-bmnx5 Total loading time: 0.327 Render date: 2021-04-15T15:35:25.437Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": false, "newCiteModal": false, "newCitedByModal": true }

CO / CI observations of N83C in the early stage of star formation in SMC with ALMA

Published online by Cambridge University Press:  30 October 2019

Sarolta Zahorecz
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Toshikazu Onishi
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Kazuyuki Muraoka
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Aya Homma
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Ryohei Harada
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Shota Takada
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Hiroyuki Maezawa
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp
Kazuki Tokuda
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: s.zahorecz@p.s.osakafu-u.ac.jp Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Kazuya Saigo
Affiliation:
Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Akiko Kawamura
Affiliation:
Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Norikazu Mizuno
Affiliation:
Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Tetsuhiro Minamidani
Affiliation:
Chile Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Science, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Margaret Meixner
Affiliation:
Department of Physics & Astronomy, Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
Remy Indebetouw
Affiliation:
Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904, USA National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903, USA
Marta Sewilo
Affiliation:
NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771, USA
Yasuo Fukui
Affiliation:
Department of Physics, Nagoya University, Chikusa-ku, Nagoya 464-8602, Japan
Alberto Bolatto
Affiliation:
Astronomy Department and Laboratory for Millimeter-wave Astronomy, University of Maryland, College Park, MD 20742, USA
Corresponding

Abstract

The Magellanic Clouds offer the opportunity to obtain a spatially resolved view of external galaxies at reduced metallicity with no distance ambiguity. Our ALMA observations of the active star-forming region N83C in the Small Magellanic Cloud (SMC) revealed subparsec-scale molecular structures in 12CO and 13CO (2-1) emission Muraoka et al. (2017). We found strong CO peaks associated with Young Stellar Objects(YSOs) and derived a typical gas density of ∽104 cm−3 and gas temperature of 40-60 K from the excitation analysis. The high gas density and temperature are presumably due to the effect of the HII region under the low-metallicity environment. We have found that the column density ratios N(CI)/N(CO) are generally high throughout the cloud compared with the Galaxy, ranging from 0.2 to 2.0. A peak of the ratio is observed toward a CO peak associated with a massive protostar.

Type
Contributed Papers
Copyright
© International Astronomical Union 2019 

Access options

Get access to the full version of this content by using one of the access options below.

References

Dufour, R. J. 1984, in IAU Symp. 108, Structure and Evolution of the Magellanic Clouds, ed. van den Bergh, S. & de Boer, K. S. D. (Dordrecht: Reidel), 353Google Scholar
Hilditch, R. W., Howarth, I. D., & Harries, T. J. 2005, MNRAS, 357, 304 CrossRefGoogle Scholar
Israel, F. P., Johansson, L. E. B., Lequeux, J., et al. 1993, A&A, 276, 25 Google Scholar
Israel, F. P., Johansson, L. E. B., Rubio, M., et al. 2003, A&A, 406, 817 Google Scholar
Kamath, D., Wood, P. R. & Va Winckel, H. 2014, MNRAS, 439, 2211 CrossRefGoogle Scholar
Koornneef, J, 1984 IN: Structure and evolution of the Magellanic Clouds; Proceedings of the Symposium, Tuebingen, West Germany, September 5-8, 1983 (A85-26576 11-90). Dordrecht, D. Reidel Publishing Co., 333Google Scholar
Kurt, C. M., Dufour, R. J., Garnett, D. R., et al. 1999, ApJ, 518, 246 CrossRefGoogle Scholar
Lequeux, J., Le Bourlot, J., Pineau des Forets, G., et al. 1994, A&A, 292, 371 Google Scholar
Leroy, A. K., Bolatto, A., Bot, C., Engelbracht, C. W., et al. 2009, ApJ, 702, 352 CrossRefGoogle Scholar
Mizuno, N., Rubio, M., Mizuno, A., et al. 2001, PASJ, 53, L45 CrossRefGoogle Scholar
Muraoka, K., Homma, A., Onishi, T. et al. 2017, ApJ, 844, 98 CrossRefGoogle Scholar
Pagel, B. E. J. 2003, in ASP Conf. Ser. 304, CNO Abundances in Dwarf and Spiral Galaxies, ed. Charbonnel, C., Schaerer, D., & Meynet, G. (San Francisco, CA: ASP), 187Google Scholar
Papadopoulos, P. P. & Greve, T. R. 2004, ApJ, 615, 29 CrossRefGoogle Scholar
Papadopoulos, P. P., Thi, W.-F., & Viti, S. 2004, MNRAS, 351, 147 CrossRefGoogle Scholar
Rubio, M., Lequeux, J., Boulanger, F., et al. 1993, A&A, 271, 1 Google Scholar
Rubio, M., Lequeux, J., Boulanger, F., et al. 1996, A&AS, 118, 263 Google Scholar
Sewiło, M., Carlson, L. R., Seale, J. P., et al. 2013, ApJ, 778, 15 CrossRefGoogle Scholar

Full text views

Full text views reflects PDF downloads, PDFs sent to Google Drive, Dropbox and Kindle and HTML full text views.

Total number of HTML views: 0
Total number of PDF views: 47 *
View data table for this chart

* Views captured on Cambridge Core between 30th October 2019 - 15th April 2021. This data will be updated every 24 hours.

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

CO / CI observations of N83C in the early stage of star formation in SMC with ALMA
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

CO / CI observations of N83C in the early stage of star formation in SMC with ALMA
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

CO / CI observations of N83C in the early stage of star formation in SMC with ALMA
Available formats
×
×

Reply to: Submit a response


Your details


Conflicting interests

Do you have any conflicting interests? *