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pro vyhledávání: '"Humphreys, R. P."'
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Autor:
Mehner, A., Steffen, W., Groh, J. H., Vogt, F. P. A., Baade, D., Boffin, H. M. J., Davidson, K., de Wit, W. J., Humphreys, R. M., Martayan, C., Oudmaijer, R. D., Rivinius, T., Selman, F.
Publikováno v:
A&A 595, A120 (2016)
Aims. The structural inhomogeneities and kinematics of massive star nebulae are tracers of their mass-loss history. We conduct a three-dimensional morpho-kinematic analysis of the ejecta of eta Car outside its famous Homunculus nebula. Methods. We ca
Externí odkaz:
http://arxiv.org/abs/1610.01688
Autor:
Mehner, A., Davidson, K., Humphreys, R. M., Walter, F. M., Baade, D., de Wit, W. J., Martin, J., Ishibashi, K., Rivinius, T., Martayan, C., Ruiz, M. T., Weis, K.
Publikováno v:
A&A 578, A122 (2015)
Aims. Every 5.5 years eta Car's light curve and spectrum change remarkably across all observed wavelength bands. We compare the recent spectroscopic event in mid-2014 to the events in 2003 and 2009 and investigate long-term trends. Methods. Eta Car w
Externí odkaz:
http://arxiv.org/abs/1504.04940
The complex circumstellar ejecta of highly evolved, cool hypergiants are indicative of multiple, asymmetric mass loss events. To explore whether such episodic, non-isotropic mass loss may be driven by surface magnetic activity, we have observed the a
Externí odkaz:
http://arxiv.org/abs/1412.5120
Autor:
Roming, P. W. A., Pritchard, T. A., Prieto, J. L., Kochanek, C. S., Fryer, C. L., Davidson, K., Humphreys, R. M., Bayless, A. J., Beacom, J. F., Brown, P. J., Holland, S. T., Immler, S., Kuin, N. P. M., Oates, S. R., Pogge, R. W., Pojmanski, G., Stoll, R., Shappee, B. J., Stanek, K. Z., Szczygiel, D. M.
We present very early UV to optical photometric and spectroscopic observations of the peculiar Type IIn supernova (SN) 2011ht in UGC 5460. The UV observations of the rise to peak are only the second ever recorded for a Type IIn SN and are by far the
Externí odkaz:
http://arxiv.org/abs/1202.4840
Publikováno v:
Astron.J.139:348-356,2010
A significant asymmetry in the distribution of faint blue stars in the inner Galaxy, Quadrant 1 (l = 20 to 45 degrees) compared to Quadrant 4 was first reported by Larsen & Humphreys (1996). Parker et al (2003, 2004) greatly expanded the survey to de
Externí odkaz:
http://arxiv.org/abs/0911.3360
Autor:
Schuster, M. T., Marengo, M., Hora, J. L., Fazio, G. G., Humphreys, R. M., Gehrz, R. D., Hinz, P. M., Kenworthy, M. A., Hoffmann, W. F.
Publikováno v:
Astrophys.J.699:1423-1432,2009
We present sub-arcsec angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/IR source and cool hypergiant NML Cyg at 8.8, 9.8 and 11.7 um. These images reveal once more the complexity in the dusty envelope surrounding
Externí odkaz:
http://arxiv.org/abs/0904.4690
Autor:
Tabatabaei, F. S., Beck, R., Krause, M., Berkhuijsen, E. M., Gehrz, R., Gordon, K. D., Hinz, J. L., Humphreys, R., McQuinn, K., Polomski, E., Rieke, G. H., Woodward, C. E.
We investigate the energy sources of the infrared (IR) emission and their relation to the radio continuum emission at various spatial scales within the Scd galaxy M33. We use the wavelet transform to analyze IR data at the Spitzer wavelengths of 24,
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701897
Autor:
Barmby, P., Ashby, M. L. N., Bianchi, L., Engelbracht, C. W., Gehrz, R. D., Gordon, K. D., Hinz, J. L., Huchra, J. P., Humphreys, R. M., Pahre, M. A., Perez-Gonzalez, P. G., Polomski, E. F., Rieke, G. H., Thilker, D. A., Willner, S. P., Woodward, C. E.
Publikováno v:
Astrophys.J.650:L45-L49,2006
Mid-infrared observations of the Andromeda galaxy, M31, obtained with the Infrared Array Camera on board the Spitzer Space Telescope, are presented. The image mosaics cover areas of approximate 3.7deg x 1.6deg and include the satellite galaxies M32 a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0608593
Publikováno v:
Astrophys.J. 640 (2006) 474-490
We describe and analyze Hubble Space Telescope (HST) observations of transient emission near 4680 {\AA} in Eta Car, reported earlier by Steiner & Damineli (2004). If, as seems probable, this is He II $\lambda$4687, then it is a unique clue to Eta Car
Externí odkaz:
http://arxiv.org/abs/astro-ph/0504151