Zobrazeno 1 - 10
of 558
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
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
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
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
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
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:
B. De Marco, Shai Kaspi, Y. Wang, Gabriele Ponti, P.-O. Petrucci, Dominic J. Walton, Gerard A. Kriss, Nahum Arav, Ciro Pinto, Junjie Mao, Francesco Ursini, S. Grafton-Waters, Elisa Costantini, Graziella Branduardi-Raymont, Jelle Kaastra, Jacobo Ebrero, Stéphane Paltani, Giorgio Matt, Simone Bianchi, M. Mehdipour, Ehud Behar, L. Di Gesu, Michael S. Brotherton, Massimo Cappi
Publikováno v:
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Astronomy and Astrophysics, 652
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 652, pp.A150. ⟨10.1051/0004-6361/202141324⟩
Universitat Politècnica de Catalunya (UPC)
Astronomy and Astrophysics, 652
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 652, pp.A150. ⟨10.1051/0004-6361/202141324⟩
From Swift monitoring of a sample of active galactic nuclei (AGN) we found a transient X-ray obscuration event in Seyfert-1 galaxy NGC 3227, and thus triggered our joint XMM-Newton, NuSTAR, and Hubble Space Telescope (HST) observations to study this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce35e26f4d1b60fc0e78a4ef6d92efb0
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