Spectrophotometric Distances - Problem of Interstellar Extinction

• Autorzy: Krełowski J. , Galazutdinov G. A. , Strobel A. , Bondar A.

Identyfikatory

DOI

10.32023/0001-5237/67.3.6

• Języki publikacji: EN

Abstrakty

EN

Distances to 112 hot reddened stars in the thin Galactic disk have been estimated with different methods and, their accuracies have been compared. Also, we have applied the CaII-method to test its relation to trigonometric parallax and the spectrophotometric one. Some interstellar clouds apparently contain especially large size dust grains which cause interstellar gray (neutral) extinction. The latter does not correlate with the typical color extinction and may falsify spectrophotometric distance estimates. We conclude that CaII and TiII based method provides in many cases the most correct and reliable distance estimates to hot, bright, distant stars in the thin disk of the Milky Way - more accurate than obtained with the spectrophotometric method.

Słowa kluczowe

EN

ISM: clouds; ISM: dust; ISM: extinction

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2017
• Tom: Vol. 67, No. 3
• Strony: 281--296
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Krełowski J.

• Center for Astronomy, Nicholas Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

autor

Galazutdinov G. A.

• Instituto de Astronomia, Universidad Catolica del Norte, Av. Angamos 0610, Antofagasta, Chile
• Pulkovo Observatory, Pulkovskoe Shosse 65, Saint-Petersburg, 196140, Russia
• Special Astrophysical Observatory, Nizhnij Arkhyz, 369167, Russia

autor

Strobel A.

• Center for Astronomy, Nicholas Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland

autor

Bondar A.

• International Center for Astronomical and Medico-Ecological Research, Zabolotnoho Str. 27, Kiev, Ukraine

Bibliografia

• Fitzpatrick, E., and Massa, D. 2007, ApJ, 663, 320.
• Galazutdinov, E., Strobel, A., Musaev, F.A., Bondar, A., and Krełowski, J. 2015, PASP, 127, 126.
• De Marchi, G., et al. 2016, MNRAS, 455, 4373.
• Megier, A., Strobel, A., Bondar, A., Musaev F.A., Han Inwoo, Krełowski, J., and Galazutdinov, G.A. 2005, ApJ, 634, 451.
• Megier, A., Strobel, A., Galazutdinov, G.A., and Krełowski, J. 2009, A&A, 507, 833.
• Papaj, J., Krełowski, J., and Wegner, W. 1993, A&A, 273, 575.
• Schmidt-Kaler Th. 1982, in: “Stars and Star Clusters” Landolt-Boernstein, Vol. 2, Eds. K. Schaifers, and H.H. Voight, Springer, Berlin Heidelberg New York.
• Sota, A., Apellániz, J.M., Morrell, N.I., Barbá, R.H., Walborn, N.R., Gamen, R.C., Arias, J.I., and Alfaro, E.J. 2014, ApJS, 211, 10.
• Trumpler, R.J. 1930, PASP, 42, 214.
• Walborn, N.R., and Fitzpatrick, E.L. 1990, PASP, 102, 379.
• Wegner, W. 2002, Baltic Astronomy, 11, 1.
• Wenger, M. et al. 2000, A&AS, 143, 9.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).