Zobrazeno 1 - 10
of 511
pro vyhledávání: '"Space Telescope Imaging Spectrograph"'
Autor:
D. M. Crenshaw, S. B. Kraemer, Mitchell Revalski, T. J. Turner, Travis Fischer, H. R. Schmitt
Publikováno v:
Proceedings of the International Astronomical Union. 15:131-135
We have analyzed Chandra/High Energy Transmission Grating spectra of the X-ray emission line gas in the Seyfert galaxy NGC 4151. The zeroth-order spectral images show extended H- and He-like O and Ne, up to a distance r ˜ 200 pc from the nucleus. Us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7fbb8d0988bec7aef49f20019d8935c7
https://doi.org/10.1017/s1743921320001660
https://doi.org/10.1017/s1743921320001660
Autor:
Thaisa Storchi-Bergmann, Rogemar A. Riffel, Dzhuliya Dashtamirova, G. E. Polack, H. R. Schmitt, S. B. Kraemer, C. L. Gnilka, Francisco Martínez, Mitchell Revalski, Travis Fischer, D. Michael Crenshaw, Beena Meena, Camilo Machuca
Publikováno v:
Proceedings of the International Astronomical Union. 15:318-322
We investigate the processes of active galactic nuclei (AGN) feeding and feedback in the narrow line regions (NLRs) and host galaxies of nearby AGN through spatially resolved spectroscopy with the Gemini Near-Infrared Integral Field Spectrograph (NIF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e84cfdd2c11fd0efcf122c539794b7f
https://doi.org/10.1017/s1743921320001623
https://doi.org/10.1017/s1743921320001623
Autor:
Adriana Valio, Raissa Estrela, Mark R. Swain, Elyar Sedaghati, Gael M. Roudier, Robert A. West
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
instname
The formation of hazes at microbar pressures has been explored by theoretical models of exoplanet atmospheres to explain Rayleigh scattering and/or featureless transmission spectra; however observational evidence of aerosols in the low-pressure forma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab90ce6a86702936519b5022e9352b66
http://hdl.handle.net/10261/254501
http://hdl.handle.net/10261/254501
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 84:788-790
A study is performed of the processes that occur during the interaction between the planetary atmosphere of Gliese 436 b and the incoming plasma wind and ionizing radiation of the parent star. The approximate values of the speed and density of the st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba5f9c1b26a272372d0c3d830ed27340
https://doi.org/10.3103/s1062873820070254
https://doi.org/10.3103/s1062873820070254
Autor:
J. Maíz Apellániz, J. I. González Hernández, S. Deustua, D. J. Lennon, Jorge Casares, Philip Dufton, T. Muñoz-Darias, Stephen Smartt, A. Herrero, Andreas Irrgang, A. de Burgos, Sergio Simón-Díaz, Ralph C. Bohlin
Publikováno v:
DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial
Universitat Pompeu Fabra
Universitat Pompeu Fabra
LB-1 has variously been proposed as either an X-ray dim B-type star plus black hole (B+BH) binary, or a Be star plus an inflated stripped star (Be+Bstr) binary. The Space Telescope Imaging Spectrograph (STIS) on board HST was used to obtain a flux-ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af3f1fbc26ee7f76a9790886327bd934
https://www.aanda.org/articles/aa/abs/2021/05/aa40253-20/aa40253-20.html
https://www.aanda.org/articles/aa/abs/2021/05/aa40253-20/aa40253-20.html
Autor:
J. B. Hutchings, Richard F. Mushotzky, Luis C. Ho, Anna Trindade Falcao, Travis Fischer, Henrique R. Schmitt, D. M. Crenshaw, Martin Ward, C. M. Gaskell, Mitchell Revalski, S. B. Kraemer, Fred Hamann, Hagai Netzer, Marianne Vestergaard, W. P. Maksym, Thaisa Storchi-Bergmann, T. J. Turner, Martin Elvis
Publikováno v:
Falcao, A T, Kraemer, S B, Fischer, T C, Crenshaw, D M, Revalski, M, Schmitt, H R, Maksym, W P, Vestergaard, M, Elvis, M, Gaskell, C M, Hamann, F, Ho, L C, Hutchings, J, Mushotzky, R, Netzer, H, Storchi-Bergmann, T, Turner, T J & Ward, M J 2021, ' Hubble Space Telescope [O III] emission-line kinematics in two nearby QSO2s : a case for X-ray feedback ', Monthly Notices of the Royal Astronomical Society, vol. 505, no. 2, pp. 3054-3069 . https://doi.org/10.1093/mnras/stab1549
Monthly Notices of the Royal Astronomical Society, 2021, Vol.505(2), pp.3054-3069 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society, 2021, Vol.505(2), pp.3054-3069 [Peer Reviewed Journal]
We present a dynamical study of the narrow-line regions in two nearby type 2 quasars (QSO2s). We construct dynamical models based on detailed photoionization models of the emission-line gas, including the effects of internal dust, to apply to observa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17a2eeb1257b5b4b2952234b1af283cb
Autor:
Dean C. Hines, Eugene Serabyn, Elodie Choquet, Marshall D. Perrin, Schuyler Wolff, J. Brendan Hagan, Julien Milli, Christopher C. Stark, Glenn Schneider, I. Rebollido, Christine Chen, Maxwell A. Millar-Blanchaer, Bin Ren, Rémi Soummer, Dimitri Mawet, Aki Roberge, Laurent Pueyo, John H. Debes
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, American Astronomical Society, 2021, 914 (2), pp.95. ⟨10.3847/1538-4357/ac03b9⟩
The Astrophysical Journal, 2021, 914 (2), pp.95. ⟨10.3847/1538-4357/ac03b9⟩
The Astrophysical Journal, American Astronomical Society, 2021, 914 (2), pp.95. ⟨10.3847/1538-4357/ac03b9⟩
The Astrophysical Journal, 2021, 914 (2), pp.95. ⟨10.3847/1538-4357/ac03b9⟩
We have obtained Hubble Space Telescope (HST) coronagraphic observations of the circumstellar disk around M star TWA 7 using the STIS instrument in visible light. Together with archival observations including HST/NICMOS using the F160W filter and Ver
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a5958b776f98668de0bfbb02701910d
Autor:
Terese T. Hansen, Inese I. Ivans, Timothy C. Beers, Vinicius M. Placco, James E. Lawler, Erika M. Holmbeck, Anna Frebel, Ian U. Roederer, Rana Ezzeddine, Amanda I. Karakas, Charli M. Sakari
We report the first detection of the Pb II line at 2203.534 Angstroms in three metal-poor stars, using ultraviolet spectra obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope. We perform a standard abundance ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fff2bebadab2f67621f8d808277ac6e
http://arxiv.org/abs/2009.14251
http://arxiv.org/abs/2009.14251
Autor:
Nick Devereux
Archival Hubble Space Telescope (HST) observations of the Seyfert 1 nucleus of NGC 3227 obtained with the Space Telescope Imaging Spectrograph (STIS) are re-examined in order to constrain a viable photoionization model for the broad-line region (BLR)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1b96253f9695b4a0615d06ca795e022
http://arxiv.org/abs/2009.11418
http://arxiv.org/abs/2009.11418
Autor:
Edward F. Guinan, Anita M. S. Richards, Richard Wasatonic, Lynn D. Matthews, Michael Weber, Miguel Montargès, Reimar Leike, Thomas Calderwood, Andrea K. Dupree, Han Uitenbroek, Klaus G. Strassmeier, Thomas Granzer
Publikováno v:
The Astrophysical Journal
Dupree, A K, Strassmeier, K G, Matthews, L D, Uitenbroek, H, Calderwood, T, Granzer, T, Guinan, E F, Leike, R, Montargès, M, Richards, A M S, Wasatonic, R & Weber, M 2020, ' Spatially Resolved Ultraviolet Spectroscopy of the Great Dimming of Betelgeuse ', The Astrophysical Journal, vol. 899, no. 1, 68 . https://doi.org/10.3847/1538-4357/aba516
Dupree, A K, Strassmeier, K G, Matthews, L D, Uitenbroek, H, Calderwood, T, Granzer, T, Guinan, E F, Leike, R, Montargès, M, Richards, A M S, Wasatonic, R & Weber, M 2020, ' Spatially Resolved Ultraviolet Spectroscopy of the Great Dimming of Betelgeuse ', The Astrophysical Journal, vol. 899, no. 1, 68 . https://doi.org/10.3847/1538-4357/aba516
The bright supergiant, Betelgeuse (Alpha Orionis, HD 39801) experienced a visual dimming during 2019 December and the first quarter of 2020 reaching an historic minimum 2020 February 7$-$13. During 2019 September-November, prior to the optical dimmin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d3aea86824ba1e4ea11df9fd9826593
http://arxiv.org/abs/2008.04945
http://arxiv.org/abs/2008.04945