CIRCUSTELLAR MATTER ACTIVITY IN AE/BE HERBIG STAR MWC 614

N. Z. Ismailov, A. N. Adigezalzade, U. Z. Bashirova

Анотація


The results of spectral observations of the Herbig  Ae/Be  type  star  HD  179218  are  presented.  Two wave-like  cycles  of  variability  in  the  parameters  of hydrogen lines Hα and Hβ with a characteristic time of ~ 40 days are revealed. The first wave of variations is deeper; the branches  of  decreasing  and  increasing  the  spectral parameters of the lines are more clearly expressed. At the time of the first minimum, in the profile of the emission lineHα the appearance and disappearance of additional blue and red emission components are observed. At the same time, narrow absorption components were discovered in the Hβ line. Possible mechanisms of the observed variability of the star are discussed.


Ключові слова


stars; variables; Herbig Ae/Be stars; circumstellar matter; individual – HD179218

Повний текст:

PDF (English)

Посилання


Alecian E., Catala C., Wade G. A. et al.: 2008, MNRAS, 385, 391.

Bouvier J., Alencar S.H.P., Harries T.J. et al.: 2007, in: Protostar and Planets V, Univ. Arizona Press, p. 479.

Dent W.R.F., Greaves J.S., Coulson I.M.: 2005, MNRAS, 359, 663.

Fedele D., Van den Ancker M.E., Acke B. et al.: 2008, Astron. and Astrophys., 491, 809.

Galazutdinov G.A.: 1992, Prepr. of the Special Astrophysical Observatory, №.92.

Guimaraes M.M., Alencar S.H.P., Corradi W.J.B., Vieira S.L.A.: 2006, Astron. and Astrophys., 457, 581.

Johns C.M., & Basri G.: 1995, AJ, 109, 2800.

Hebrig S., Stelzer B., Schцller M. et al.: 2009, Astron. and Astrophys., 502, 283.

Ismailov N.Z., Bahaddinova G.R., Kalilov O.V., Mikailov Kh.M.: 2013, Astrophys.Bull., 68, №2, 196.

Kozlova O.V.: 2004, Astrophys., 47, № 3, 287.

Kozlova O.V., Alekseev I.Yu.: 2017, ASP Conf. Ser., 510, 153.

Leinert Ch., van Boekel R., Waters L.B.F.M. et al.: 2004, Astron. and Astrophys., 423, 537.

Mora A., Eiroa C., Natta A. et al.: 2004, A&A, 419, 225.

Miroshnichenko A.S., Bjorkman K.S., Mulliss C.L. et al.: 1998, PASP, 110, 883.

Mendigutнa I., Eiroa C., Montesinos B., Mora A., Oudmaijer R.D., Merнn B., Meeus G.: 2011, A&A, 529, A34.

Mendigutıa I., Oudmaijer R.D., Mourard D., Muzerolle J.: 2017, Monthly Notices Royal Astron. Soc., 464, 1984.

Mendigutıa I., Mora A,, Montesinos B. et al.: 2012, A&A, 543, A59.

Millan-Gabet R., Schloerb F.P., Traub W.A.: 2001, Ap.J., 546, 358.

Praderie F., Simon T., Catala C., Boesgaard A.M.: 1986, ApJ, 303, 311.

Pogodin M.A.: 1994, A&A, 282, 141.

Pirzkal N., Spillar E.J., Dyck H.M.: 1997, Ap.J., 481, 392.

Rodgers B.,Wooden D.H., Grinin V. et al.: 2002, ApJ, 564, 405.

Schisano E., Covino E., Alcalб J.M. et al.: 2009, A&A, 501, 1013.

The P.S., De Winter D., Perez M.R.: 1994, A&ASS, 104, 315.

Wheelwright H.E., Oudmaijer R.D., Goodwin S.P.: 2010, Monthly Notices Royal Astron. Soc., 401, 1199.




DOI: https://doi.org/10.18524/1810-4215.2017.30.117155

Посилання

  • Поки немає зовнішніх посилань.


Copyright (c) 2017 Odessa Astronomical Publications

Creative Commons License
Ця робота ліцензована Creative Commons Attribution-NonCommercial 4.0 International License.