Hostname: page-component-cd9895bd7-fscjk Total loading time: 0 Render date: 2024-12-25T05:07:01.719Z Has data issue: false hasContentIssue false

Infrared variability, maser activity, and accretion of massive young stellar objects

Published online by Cambridge University Press:  16 July 2018

Bringfried Stecklum
Affiliation:
Thüringer Landessternwarte Tautenburg, Sternwarte 5, D-07778 Tautenburg, Germany email: [email protected]
Alessio Caratti o Garatti
Affiliation:
Dublin Institute for Advanced Studies, Dublin, Ireland
Klaus Hodapp
Affiliation:
Institute for Astronomy, Hilo, USA
Hendrik Linz
Affiliation:
Max-Planck Institut fr Astronomie, Heidelberg, Germany
Luca Moscadelli
Affiliation:
INAF, Firenze, Italy
Alberto Sanna
Affiliation:
Max-Planck Institut fr Radioastronomie, Bonn, Germany
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Methanol and water masers indicate young stellar objects. They often exhibit flares, and a fraction shows periodic activity. Several mechanisms might explain this behavior but the lack of concurrent infrared (IR) data complicates the identification of its cause. Recently, 6.7 GHz methanol maser flares were observed, triggered by accretion bursts of high-mass YSOs which confirmed the IR-pumping of these masers. This suggests that regular IR changes might lead to maser periodicity. Hence, we scrutinized space-based IR imaging of YSOs associated with periodic methanol masers. We succeeded to extract the IR light curve from NEOWISE data for the intermediate mass YSO G107.298+5.639. Thus, for the first time a relationship between the maser and IR variability could be established. While the IR light curve shows the same period of ~34.6 days as the masers, its shape is distinct from that of the maser flares. Possible reasons for the IR periodicity are discussed.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2018 

References

Araya, E. D., Hofner, P., Goss, W. M., Kurtz, S., Richards, A. M. S et al. 2010, ApJ, 717, L133CrossRefGoogle Scholar
Artymowicz, P. & Lubow, S. 1996, ApJ, 467, L77CrossRefGoogle Scholar
Breen, S. L., Ellingsen, S. P., Contreras, Y., Green, J. A. et al. 2013, MNRAS, 435, 524CrossRefGoogle Scholar
Caratti o Garatti, A., Stecklum, B., Garcia Lopez, R., Eislffel, J. et al. 2017, NatPhys, 13, 276Google Scholar
Contreras Peña, C., Lucas, P. W., Minniti, D., Kurtev, R. et al. 2017a, MNRAS, 465, 3011CrossRefGoogle Scholar
Contreras Peña, C., Lucas, P. W., Kurtev, R., Minniti, D. et al. 2017b, MNRAS, 465, 3039CrossRefGoogle Scholar
Fujisawa, K., Takase, G., Kimura, S., Aoki, N., Nagadomi, Y. et al. 2014, PASJ, 66, 78CrossRefGoogle Scholar
Fujisawa, K., Yonekura, Y., Sugiyama, K., Horiuchi, H., Hayashi, T. et al. 2015, ATel, #8286Google Scholar
Goedhart, S., Maswanganye, J. P., Gaylard, M. J. et al. 2014, MNRAS, 437, 1808CrossRefGoogle Scholar
Herbig, G. 1977, ApJ, 217, 693CrossRefGoogle Scholar
Herbig, G. 1989, ESOC, 33, 233Google Scholar
Hirota, T., Bushimata, T., Choi, Y. K., Honma, M., Imai, H. et al. 2008, PASJ, 60, 961CrossRefGoogle Scholar
Hunter, T. R., Brogan, C. L., MacLeod, G., Cyganowski, C. J. et al. 2017, ApJ, 873, L29CrossRefGoogle Scholar
Inayoshi, K., Sugiyama, K., Hosokawa, T., Motogi, K., & Tanaka, K. 2013, ApJ, 769, L20CrossRefGoogle Scholar
Inno, I., Matsunaga, N., Romaniello, M., Bono, G., Monson, A. et al., 2015, A&A, 576, A30Google Scholar
Maswanganye, J. P. Gaylard, M. J., Goedhart, S. et al. 2015, MNRAS, 446, 2730CrossRefGoogle Scholar
Moscadelli, L., Sanna, A., Goddi, C., Walmsley, M. C., Cesaroni, R. et al., 2017, A&A, 600, L8Google Scholar
Parfenov, S. Y.u. & Sobolev, A. M. 2014, MNRAS, 444, 620CrossRefGoogle Scholar
Sánchez-Monge, A. S., Palau, A., Estalella, R., Kurtz, S., Zhang, Q. et al. 2010, ApJ, 721, L107CrossRefGoogle Scholar
Sobolev, A. M., Cragg, D. M., & Godfrey, P. D., 1997, A&A, 324, 211Google Scholar
Stecklum, B., & Caratti o Garatti, A., Cardenas, M. C., Greiner, J. et al. 2016, ATel, #8732Google Scholar
Slysh, V. I., Val’tts, I. E., Kalenskii, S. V., Larionov, G. M. et al. 1998, ASP Conf.Ser., 144, 379Google Scholar
Szymczak, M., Wolak, P., & Bartkiewicz, A. 2015, MNRAS, 448, 2284CrossRefGoogle Scholar
Szymczak, M., Olech, M., Wolak, P., Bartkiewicz, A., & Gawroski, M. 2016, MNRAS, 459, L56CrossRefGoogle Scholar
Szymczak, M., & Olech, M. Sarniak, R. Wolak, P. Bartkiewicz, A et al. 2017, arXiv, 1710.04595Google Scholar
van der Walt, D. J. 2011, AJ, 141, 152CrossRefGoogle Scholar