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Kevin Luhman is a professor of astronomy and astrophysics from Pennsylvania State University who discovered both the third closest stellar system Luhman 16[1] and the fourth closest stellar system WISE 0855−0714[2] to the Sun. Both systems are composed of substellar objects (objects less massive than stars), falling into the category of brown dwarfs (Luhman 16) or even less massive objects (WISE 0855−0714) which are categorized as sub-brown dwarfs but also referred to as "free floating planets" or "planetary mass objects". WISE 0855−0714 (discovery published 2014) is the coldest massive object outside the solar system that has been directly imaged.

Luhman 16 was named for its discoverer, following common practice for very nearby stars discovered in modern times.

These discoveries were made through analysis of mid-infrared data from the WISE satellite, a NASA mission that mapped the entire sky and detected several hundred million stars. The satellite mapped the entire sky twice between January 2010 and January 2011, thereby providing two sets of images and coordinates for every star. The motions of the nearest stars over the six month interval between the two sets of observations were measurable, enabling the discovery of these new objects.

Luhman graduated from the University of Texas with a B.A. in astronomy and a B.S. in physics in 1993.[3] He earned his Ph.D. in astronomy from the University of Arizona in 1998.


References


  1. "Close neighbor of sun discovered". UPI. Retrieved 2022-06-30.
  2. Credit: weareCentralPA.com, "Penn State Professor Makes Historic Space Discovery". April 28, 2014. Archived from the original on 2014-10-25. Retrieved 2014-10-25.
  3. Eberly College of Science, Department of Astronomy & Astrophysics, Penn State University, http://www.astro.psu.edu/people/kll207



На других языках


[de] Kevin Luhman

Kevin Luhman ist ein US-amerikanischer Astronom. Sein Fachgebiet ist die Suche nach Exoplaneten und Gebiete im Universum, die für extraterrestrisches Leben geeignet sind.
- [en] Kevin Luhman

[fr] Kevin Luhman

Kevin Luhman est professeur d'astronomie et d'astrophysique de l'Université d'État de Pennsylvanie. Il est connu pour avoir découvert à la fois les troisième et quatrième systèmes stellaires les plus proches du Soleil, à savoir Luhman 16[1] et WISE 0855-0714[2]. Les deux systèmes sont en réalité constitués d'objets substellaires (objets moins massifs que les étoiles), Luhman 16 étant composé de deux naines brunes alors que WISE 0855-0714 est un objet encore moins massif officiellement appelé sous-naine brune et parfois également nommé objet libre de masse planétaire. WISE 0855-0714, dont la découverte a été publiée en 2014, est également l'objet le plus froid en dehors du système solaire qui ait été directement photographié.

[ru] Луман, Кевин

Кевин Луман (англ. Kevin Luhman; род. XX век) — профессор астрономии и астрофизики из Университета штата Пенсильвания, который известен тем, что открыл третью ближайшую к Солнцу звездную систему Luhman 16[1] и четвертую ближайшую к Солнцу звездную систему WISE 0855−0714[2][3].



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