Skip to main content

Low-Frequency Carbon Recombination Lines in the Orion Molecular Cloud Complex

  • Chenoa D. Tremblay (a1), Christopher H. Jordan (a1) (a2), Maria Cunningham (a3), Paul A. Jones (a3) and Natasha Hurley-Walker (a1)...

We detail tentative detections of low-frequency carbon radio recombination lines from within the Orion molecular cloud complex observed at 99–129 MHz. These tentative detections include one alpha transition and one beta transition over three locations and are located within the diffuse regions of dust observed in the infrared at 100 μm, the Hα emission detected in the optical, and the synchrotron radiation observed in the radio. With these observations, we are able to study the radiation mechanism transition from collisionally pumped to radiatively pumped within the H ii regions within the Orion molecular cloud complex.

Corresponding author
Hide All
Ahmad, I. A. 1974, APJ, 194, 50310.1086/1532681974ApJ...194..503A
Ahmad, I. A. 1976, APJ, 209, 46210.1086/1547401976ApJ...209..462A
Anantharamaiah, K. R., Goss, W. M., & Dewdney, P. E. 1990, in IAU Colloq. 125, Vol. 163, Radio Recombination Lines: 25 Years of Investigation, Astrophysics and Space Science Library, eds. Gordon, M. A. & Sorochenko, R. L. (Dordrecht: Kluwer), 123, doi:10.1007/978-94-009-0625-9_1110.1007/978-94-009-0625-9_11
Andree-Labsch, S., Ossenkopf-Okada, V., & Röllig, M. 2017, A&A, 598, A210.1051/0004-6361/2014242872017A&A...598A...2A
Boughton, W. L. 1978, APJ, 222, 51710.1086/1561641978ApJ...222..517B
Chaisson, E. J., & Lada, C. J. 1974, APJ, 189, 22710.1086/1527931974ApJ...189..227C
Dame, T. M., Hartmann, D., & Thaddeus, P. 2001, APJ, 547, 79210.1086/3183882001ApJ...547..792D
Finkbeiner, D. P. 2003, APJS, 146, 40710.1086/3744112003ApJS..146..407F
Gordon, M. A., & Sorochenko, R. L., eds. 2009, Radio Recombination Lines. Astrophysics and Space Science Library, Vol. 282, (New York: Springer)
Hancock, P. J., Murphy, T., Gaensler, B. M., Hopkins, A., & Curran, J. R. 2012, MNRAS, 422, 181210.1111/j.1365-2966.2012.20768.x2012MNRAS.422.1812H
Hancock, P. J., Trott, C. M., & Hurley-Walker, N. 2018, PASA, 35, 1110.1017/pasa.2018.32018PASA...35...11H
Herbst, E., & van Dishoeck, E. F. 2009, ARAA, 47, 42710.1146/annurev-astro-082708-1016542009ARA&A..47..427H
Howe, J. E., Jaffe, D. T., Grossman, E. N., Wall, W. F., Mangum, J. G., & Stacey, G. J. 1993, APJ, 410, 17910.1086/1727361993ApJ...410..179H
Hurley-Walker, N., et al. 2017, MNRAS, 464, 114610.1093/mnras/stw23372017MNRAS.464.1146H
O’Dell, C. R., Ferland, G. J., Henney, W. J., Peimbert, M., García-Díaz, M. T., & Rubin, R. H. 2015, AJ, 150, 10810.1088/0004-6256/150/4/1082015AJ....150..108O
Odell, C. R., Ferland, G. J., Porter, R. L., & Hoof, P. A. M. V. 2011, APJ 10.1088/0004-637x/733/1/9, 733, 9
Osterbrock, D., & Flather, E. 1959, APJ, 129, 2610.1086/1465921959ApJ...129...26O
Payne, H. E., Anantharamaiah, K. R., & Erickson, W. C. 1989, ApJ, 341, 89010.1086/1675471989ApJ...341..890P
Payne, H. E., Anantharamaiah, K. R., & Erickson, W. C. 1994, ApJ, 430, 69010.1086/1744411994ApJ...430..690P
Peters, W. M., Clarke, T., Lazio, J., & Kassim, N. 2010, in American Astronomical Society Meeting Abstracts #215, 262
Pon, A., Johnstone, D., Bally, J., & Heiles, C. 2014, MNRAS, 441, 109510.1093/mnras/stu6202014MNRAS.441.1095P
Pon, A., Ochsendorf, B. B., Alves, J., Bally, J., Basu, S., & Tielens, A. G. G. M. 2016, ApJ, 827, 4210.3847/0004-637X/827/1/422016ApJ...827...42P
Remazeilles, M., Dickinson, C., Banday, A. J., Bigot-Sazy, M.-A., & Ghosh, T. 2015, MNRAS, 451, 431110.1093/mnras/stv12742015MNRAS.451.4311R
Remijan, A. J., & Markwick-Kemper, A., ALMA Working Group on Spectral Line Frequencies 2007, in American Astronomical Society Meeting Abstracts, 963
Roshi, D. A., Goss, W. M., & Jeyakumar, S. 2014, ApJ, 793, 8310.1088/0004-637X/793/2/832014ApJ...793...83R
Salas, P., et al. 2017, MNRAS, 467, 227410.1093/mnras/stx2392017MNRAS.467.2274S
Salgado, F., Morabito, L. K., Oonk, J. B. R., Salas, P., Toribio, M. C., Röttgering, H. J. A., & Tielens, A. G. G. M. 2017a, APJ, 837, 14110.3847/1538-4357/aa5d9e2017ApJ...837..141S
Salgado, F., Morabito, L. K., Oonk, J. B. R., Salas, P., Toribio, M. C., Röttgering, H. J. A., & Tielens, A. G. G. M. 2017b, ApJ, 837, 14210.3847/1538-4357/aa5d9a2017ApJ...837..142S
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 52510.1086/3057721998ApJ...500..525S
Schmid-Burgk, J., et al. 1989, AAP, 215, 1501989A&A...215..150S
Seon, K.-I., Witt, A., Kim, I.-J., Shinn, J.-H., Edelstein, J., Min, K.-W., & Han, W. 2011, APJ, 743, 18810.1088/0004-637X/743/2/1882011ApJ...743..188S
Shaver, P. A. 1975, AAP, 43, 4651975A&A....43..465S
Sorochenko, R. L., & Tsivilev, A. P. 2010, KPCB, 26, 16210.3103/S08845913100400332010KPCB...26..162S
Stutzki, J., Graf, U. U., Genzel, R., Harris, A. I., Hills, R. E., & Russell, A. P. G., 1991, in Molecular Clouds, eds. James, R. A. & Millar, T. J. (Cambridge: Cambridge University Press), 17
Tingay, S. J., et al. 2013, PASA, 30, 710.1017/pasa.2012.0072013PASA...30....7T
Tremblay, C. D., Hurley-Walker, N., Cunningham, M., Jones, P. A., Hancock, P. J., Wayth, R., & Jordan, C. H. 2017, MNRAS, 471, 414410.1093/mnras/stx18382017MNRAS.471.4144T
Wilson, B. A., Dame, T. M., Masheder, M. R. W., & Thaddeus, P. 2005, AAP, 430, 52310.1051/0004-6361:200359432005A&A...430..523W
Wyrowski, F., Schilke, P., Hofner, P., & Walmsley, C. M. 1997, APJL, 487, L17110.1086/3108931997ApJ...487L.171W
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
Please enter your name
Please enter a valid email address
Who would you like to send this to? *



Full text views

Total number of HTML views: 1
Total number of PDF views: 9 *
Loading metrics...

Abstract views

Total abstract views: 31 *
Loading metrics...

* Views captured on Cambridge Core between 2nd May 2018 - 24th May 2018. This data will be updated every 24 hours.