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Characterisation of the MALT90 Survey and the Mopra Telescope at 90 GHz

  • J. B. Foster (a1) (a2), J. M. Rathborne (a3), P. Sanhueza (a2), C. Claysmith (a2), J. S. Whitaker (a4), J. M. Jackson (a2), J. L. Mascoop (a2), M. Wienen (a5), S. L. Breen (a3), F. Herpin (a6) (a7), A. Duarte-Cabral (a6) (a7), T. Csengeri (a5), Y. Contreras (a3), B. Indermuehle (a3), P. J. Barnes (a8), A. J. Walsh (a9), M. R. Cunningham (a10), T. R. Britton (a3) (a11), M. A. Voronkov (a3), J. S. Urquhart (a5), J. Alves (a12), C. H. Jordan (a3) (a13), T. Hill (a14) (a15), S. Hoq (a2), K. J. Brooks (a3) and S. N. Longmore (a16) (a17)...

Abstract

We characterise the Millimetre Astronomy Legacy Team 90 GHz Survey (MALT90) and the Mopra telescope at 90 GHz. We combine repeated position-switched observations of the source G300.968+01.145 with a map of the same source in order to estimate the pointing reliability of the position-switched observations and, by extension, the MALT90 survey; we estimate our pointing uncertainty to be 8 arcsec. We model the two strongest sources of systematic gain variability as functions of elevation and time-of-day and quantify the remaining absolute flux uncertainty. Corrections based on these two variables reduce the scatter in repeated observations from 12%–25% down to 10%–17%. We find no evidence for intrinsic source variability in G300.968+01.145. For certain applications, the corrections described herein will be integral for improving the absolute flux calibration of MALT90 maps and other observations using the Mopra telescope at 90 GHz.

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References

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Caswell, J. L. 1997, MNRAS, 289, 203
Caswell, J. L. 2003, MNRAS, 341, 551
Caswell, J. L., Kramer, B. H., & Reynolds, J. E. 2009, MNRAS, 398, 528
Chapman, J. F., Millar, T. J., Wardle, M., Burton, M. G., & Walsh, A. J. 2009, MNRAS, 394, 221
Chin, Y.-N., Henkel, C., Whiteoak, J. B., Langer, N., & Churchwell, E. B. 1996, A&A, 305, 960
Churchwell, E. 1999, in NATO ASIC Proc. 540: The Origin of Stars and Planetary Systems, ed. Lada, C. J. & Kylafis, N. D. (Kluwer: Academic Publishers), 515
Contreras, Y., et al. 2013, A&A, 549, A45
Dodson, R. G., & Ellingsen, S. P. 2002, MNRAS, 333, 307
Doyle, K. B. 2009, SPIE Conf. Ser, 7427, 9
Faúndez, S., Bronfman, L., Garay, G., Chini, R., Nyman, L.-Å., & May, J. 2004, A&A, 426, 97
Foster, J. B., et al. 2011, ApJS, 197, 25
Franco-Hernández, R., & Rodríguez, L. F. 2004, ApJ, 604, L105
Galván-Madrid, R., Rodríguez, L. F., Ho, P. T. P., & Keto, E. 2008, ApJ, 674, L33
Galván-Madrid, R., Peters, T., Keto, E. R., Mac Low, M., Banerjee, R., & Klessen, R. 2011, MNRAS, 416, 1033
Green, J. A., et al. 2009, MNRAS, 392, 783
Gum, C. S. 1955, MmRAS, 67, 155
Haario, H., Saksman, E., & Tamminen, J. 1998, Bernoulli, 7, 223
Han, J. L., & Zhang, J. S. 2007, A&A, 464, 609
Jones, P. A., et al. 2012, MNRAS, 419, 2961
Klassen, M., Peters, T., & Pudritz, R. E. 2012, ApJ, 758, 137
Kwok, S., Volk, K., & Bidelman, W. P. 1997, ApJS, 112, 557
Ladd, N., Purcell, C., Wong, T., & Robertson, S. 2005, PASA, 22, 62
Peters, T., Klessen, R. S., Mac Low, M., & Banerjee, R. 2010, ApJ, 725, 134
Robinson, B. J., Caswell, J. L., & Goss, W. M. 1974, AuJPh, 27, 575
Rodgers, A. W., Campbell, C. T., & Whiteoak, J. B. 1960, MNRAS, 121, 103
Schuller, F., et al. 2009, A&A, 504, 415
Urquhart, J. S., et al. 2010, PASA, 27, 321
van Dishoeck, E. F., & Blake, G. A. 1998, ARA&A, 36, 317
Vilas-Boas, J. W. S., & Abraham, Z. 2000, A&A, 355, 1115
Viti, S., Collings, M. P., Dever, J. W., McCoustra, M. R. S., & Williams, D. A. 2004, MNRAS, 354, 1141
Walsh, A. J., Bertoldi, F., Burton, M. G., & Nikola, T. 2001, MNRAS, 326, 36
Walsh, A. J., Burton, M. G., Hyland, A. R., & Robinson, G. 1998, MNRAS, 301, 640
Walsh, A. J., Burton, M. G., Hyland, A. R., & Robinson, G. 1999, MNRAS, 309, 905
Zinchenko, I., Henkel, C., & Mao, R. Q. 2000, A&A, 361, 1079

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