Wolfgang Gieren

[:en][three_fourth last=»no» spacing=»yes» center_content=»no» hide_on_mobile=»no» background_color=» background_image=» background_image=»» background_repeat=»no-repeat» background_position=»left top» hover_type=»none» link=»» border_position=»all» border_size=»0px» border_color=» border_style=» border_style=»» padding=» margin_top=» margin_top=»» margin_bottom=» animation_type=» animation_type=»» animation_direction=»» animation_speed=»0.1″ animation_offset=» class=» class=»» id=»»][fusion_text]Wolfgang Gieren´s research focuses on the calibration of the extragalactic distance scale mostly using stellar distance indicators, such as Cepheid variables, eclipsing binaries, red giants and blue supergiant stars. He is, together with Dr. Grzegorz Pietrzynski of the Copernicus Astronomical Center in Warsaw, the principal investigator of the Araucaria Project which has been one of the most productive projects in the distance scale area worldwide over the past 15 years. He is a leading expert on the Baade-Wesselink method to determine the distances of pulsating stars, and involved in a project to use Gaia parallaxes to improve this method to yield extremely accurate distances to Cepheid stars.

Gieren is also actively involved in the study of the physical and chemical properties of pulsating stars, mainly of Cepheid variables with a view to improve them as standard candles and use them, as a member of the Vista Variables in the Milky Way (VVV) research team, as a tool for the investigation of Galactic structure.

He has been regularly using telescopes in Chile, South Africa, and the Hubble Space Telescope for his research. Wolfgang Gieren obtained his PhD degree in 1975 at Bonn University in Germany and joined Universidad de Concepción in 1996 as a Full Professor.

Studies

  • M.Sc. in Physics, Bonn University (1972)
  • Ph.D. in Astronomy, Bonn University (1975)

[/fusion_text][/three_fourth][one_fourth last=»yes» spacing=»yes» center_content=»no» hide_on_mobile=»no» background_color=»» background_image=»» background_repeat=»no-repeat» background_position=»left top» hover_type=»none» link=»» border_position=»all» border_size=»0px» border_color=»» border_style=»» padding=»» margin_top=»» margin_bottom=»» animation_type=»» animation_direction=»» animation_speed=»0.1″ animation_offset=»» class=»» id=»»][person name=»Wolfgang Gieren» title=»Associate Researcher» picture=»http://www.astrofisicamas.cl/wp-content/uploads/2016/11/gieren.jpg» pic_link=»» linktarget=»_self» pic_style=»none» hover_type=»none» background_color=»» content_alignment=»» pic_style_color=»» pic_bordersize=»» pic_bordercolor=»» pic_borderradius=»» icon_position=»» social_icon_boxed=»» social_icon_boxed_radius=»» social_icon_color_type=»» social_icon_colors=»» social_icon_boxed_colors=»» social_icon_tooltip=»» email=»» facebook=»» twitter=»» instagram=»» dribbble=»» google=»» linkedin=»» blogger=»» tumblr=»» reddit=»» yahoo=»» deviantart=»» vimeo=»» youtube=»» pinterest=»» rss=»» digg=»» flickr=»» forrst=»» myspace=»» skype=»» paypal=»» dropbox=»» soundcloud=»» vk=»» xing=»» show_custom=»no» class=»» id=»»]
E-mail: wgieren@astro-udec.cl[/person][/one_fourth][fullwidth background_color=»» background_image=»» background_parallax=»none» enable_mobile=»no» parallax_speed=»0.3″ background_repeat=»no-repeat» background_position=»left top» video_url=»» video_aspect_ratio=»16:9″ video_webm=»» video_mp4=»» video_ogv=»» video_preview_image=»» overlay_color=»» overlay_opacity=»0.5″ video_mute=»yes» video_loop=»yes» fade=»no» border_size=»0px» border_color=»» border_style=»» padding_top=»20″ padding_bottom=»20″ padding_left=»» padding_right=»» hundred_percent=»no» equal_height_columns=»no» hide_on_mobile=»no» menu_anchor=»» class=»» id=»»][button link=»http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?db_key=AST&db_key=PRE&qform=AST&arxiv_sel=astro-ph&arxiv_sel=cond-mat&arxiv_sel=cs&arxiv_sel=gr-qc&arxiv_sel=hep-ex&arxiv_sel=hep-lat&arxiv_sel=hep-ph&arxiv_sel=hep-th&arxiv_sel=math&arxiv_sel=math-ph&arxiv_sel=nlin&arxiv_sel=nucl-ex&arxiv_sel=nucl-th&arxiv_sel=physics&arxiv_sel=quant-ph&arxiv_sel=q-bio&sim_query=YES&ned_query=YES&adsobj_query=YES&aut_logic=OR&obj_logic=OR&author=Gieren%2C+W&object=&start_mon=&start_year=&end_mon=&end_year=&ttl_logic=OR&title=&txt_logic=OR&text=&nr_to_return=200&start_nr=1&jou_pick=ALL&ref_stems=&data_and=ALL&group_and=ALL&start_entry_day=&start_entry_mon=&start_entry_year=&end_entry_day=&end_entry_mon=&end_entry_year=&min_score=&sort=SCORE&data_type=SHORT&aut_syn=YES&ttl_syn=YES&txt_syn=YES&aut_wt=1.0&obj_wt=1.0&ttl_wt=0.3&txt_wt=3.0&aut_wgt=YES&obj_wgt=YES&ttl_wgt=YES&txt_wgt=YES&ttl_sco=YES&txt_sco=YES&version=1
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» color=»darkgray» size=»medium» stretch=»no» type=»flat» shape=»square» target=»_blank» title=»» gradient_colors=»|» gradient_hover_colors=»|» accent_color=»» accent_hover_color=»» bevel_color=»» border_width=»» icon=»fa-hand-o-up» icon_position=»left» icon_divider=»no» modal=»» animation_type=»0″ animation_direction=»left» animation_speed=»1″ animation_offset=»» alignment=»» class=»» id=»»]See Publications[/button][/fullwidth][:es][three_fourth last=»last=»last=»link=»»»» spacing=»yes» center_content=»no» hide_on_mobile=»no» background_color=» background_image=» background_image=»» background_repeat=»no-repeat» background_position=»left top» hover_type=»none» link=»» border_position=»all» border_size=»0px» border_color=» border_style=» border_style=»» padding=» margin_top=» margin_top=»» margin_bottom=» animation_type=» animation_type=»» animation_direction=»» animation_speed=»0.1″ animation_offset=» class=» class=»» id=»»][fusion_text]La investigación que realiza el Dr. Wolfgang Gieren se enfoca en la calibración de la escala de distancia extragaláctica usando indicadores de distancias estelares como estrellas Cefeidas, estrellas rojas del “clump” y supergigantes azules. Él es el investigador principal del proyecto Araucaria en el cual estos objetos, y las herramientas usadas para medir sus distancias, son estudiados y comparados en un número de galaxias en el Grupo Local y de Sculptor.

Gieren también está involucrado en la investigación y estudio de compañeros planetarios a estrellas de tipo solar, los cuales muestran transientes fotométricos, y el seguimiento espectroscópico de gigantes del halo que pueden ser usadas para la grilla astrométrica de la misión espacial SIM. El usa regularmente los grandes telescopios en Chile obteniendo imágenes infrarrojas y ópticas y espectroscopia de baja y alta resolución.

El ha estado usando el telescopio espacial Hubble para su investigación. Wolfgang Gieren obtuvo su Ph.D. en 1975 en la Universidad de Bonn en Alemania y se incorporó a la Universidad de Concepción en 1996 como profesor titular.

Estudios

Máster (M.Sc.) en Física, Universidad de Bonn, Alemania (1972)
Doctorado (Ph.D.) en Astronomía, Universidad de Bonn, Alemania (1975)[/fusion_text][/three_fourth][one_fourth last=»yes» spacing=»yes» center_content=»no» hide_on_mobile=»no» background_color=»» background_image=»» background_repeat=»no-repeat» background_position=»left top» hover_type=»none» link=»» border_position=»all» border_size=»0px» border_color=»» border_style=»» padding=»» margin_top=»» margin_bottom=»» animation_type=»» animation_direction=»» animation_speed=»0.1″ animation_offset=»» class=»» id=»»][person name=»Wolfgang Gieren» title=»Investigador Asociado» picture=»http://www.astrofisicamas.cl/wp-content/uploads/2016/11/gieren.jpg» pic_link=»» linktarget=»_self» pic_style=»none» hover_type=»none» background_color=»» content_alignment=»» pic_style_color=»» pic_bordersize=»» pic_bordercolor=»» pic_borderradius=»» icon_position=»» social_icon_boxed=»» social_icon_boxed_radius=»» social_icon_color_type=»» social_icon_colors=»» social_icon_boxed_colors=»» social_icon_tooltip=»» email=»» facebook=»» twitter=»» instagram=»» dribbble=»» google=»» linkedin=»» blogger=»» tumblr=»» reddit=»» yahoo=»» deviantart=»» vimeo=»» youtube=»» pinterest=»» rss=»» digg=»» flickr=»» forrst=»» myspace=»» skype=»» paypal=»» dropbox=»» soundcloud=»» vk=»» xing=»» show_custom=»no» class=»» id=»»]E-mail: wgieren@astro-udec.cl[/person][/one_fourth][fullwidth background_color=»» background_image=»» background_parallax=»none» enable_mobile=»no» parallax_speed=»0.3″ background_repeat=»no-repeat» background_position=»left top» video_url=»» video_aspect_ratio=»16:9″ video_webm=»» video_mp4=»» video_ogv=»» video_preview_image=»» overlay_color=»» overlay_opacity=»0.5″ video_mute=»yes» video_loop=»yes» fade=»no» border_size=»0px» border_color=»» border_style=»» padding_top=»20″ padding_bottom=»20″ padding_left=»» padding_right=»» hundred_percent=»no» equal_height_columns=»no» hide_on_mobile=»no» menu_anchor=»» class=»» id=»»][button link=»http://adsabs.harvard.edu/cgi-bin/nph-abs_connect?db_key=AST&db_key=PRE&qform=AST&arxiv_sel=astro-ph&arxiv_sel=cond-mat&arxiv_sel=cs&arxiv_sel=gr-qc&arxiv_sel=hep-ex&arxiv_sel=hep-lat&arxiv_sel=hep-ph&arxiv_sel=hep-th&arxiv_sel=math&arxiv_sel=math-ph&arxiv_sel=nlin&arxiv_sel=nucl-ex&arxiv_sel=nucl-th&arxiv_sel=physics&arxiv_sel=quant-ph&arxiv_sel=q-bio&sim_query=YES&ned_query=YES&adsobj_query=YES&aut_logic=OR&obj_logic=OR&author=Gieren%2C+W&object=&start_mon=&start_year=&end_mon=&end_year=&ttl_logic=OR&title=&txt_logic=OR&text=&nr_to_return=200&start_nr=1&jou_pick=ALL&ref_stems=&data_and=ALL&group_and=ALL&start_entry_day=&start_entry_mon=&start_entry_year=&end_entry_day=&end_entry_mon=&end_entry_year=&min_score=&sort=SCORE&data_type=SHORT&aut_syn=YES&ttl_syn=YES&txt_syn=YES&aut_wt=1.0&obj_wt=1.0&ttl_wt=0.3&txt_wt=3.0&aut_wgt=YES&obj_wgt=YES&ttl_wgt=YES&txt_wgt=YES&ttl_sco=YES&txt_sco=YES&version=1
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