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1.	Guillevin, L, et al. (author) Functional impairment of systemic scleroderma patients with digital ulcerations: results from the DUO Registry 2013 In: CLINICAL AND EXPERIMENTAL RHEUMATOLOGY. - 0392-856X. ; 31:2, s. S71-S80 Journal article (other academic/artistic)
2.	Janson, Markus, et al. (author) A MULTIPLICITY CENSUS OF INTERMEDIATE-MASS STARS IN SCORPIUS-CENTAURUS 2013 In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 773:2, s. 170- Journal article (peer-reviewed)abstract Stellar multiplicity properties have been studied for the lowest and the highest stellar masses, but intermediate-mass stars from F-type to late A-type have received relatively little attention. Here, we report on a Gemini/NICI snapshot imaging survey of 138 such stars in the young Scorpius-Centaurus (Sco-Cen) region, for the purpose of studying multiplicity with sensitivity down to planetary masses at wide separations. In addition to two brown dwarfs and a companion straddling the hydrogen-burning limit which we reported previously, here we present 26 new stellar companions and determine a multiplicity fraction within 0 ''.1-5 ''.0 of 21% +/- 4%. Depending on the adopted semimajor axis distribution, our results imply a total multiplicity in the range of similar to 60%-80%, which further supports the known trend of a smooth continuous increase in the multiplicity fraction as a function of primary stellar mass. A surprising feature in the sample is a distinct lack of nearly equal-mass binaries, for which we discuss possible reasons. The survey yielded no additional companions below or near the deuterium-burning limit, implying that their frequency at >200 AU separations is not quite as high as might be inferred from previous detections of such objects within the Sco-Cen region.

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Type of publication: journal article (2)

Type of content: other academic/artistic (1); peer-reviewed (1)

Author/Editor: Bohm, J. (1); Cole, S. (1); Hamilton, A. (1); Becker, M (1); Baumann, C. (1); Gomez, R. (1); show more...; Schweda, K. (1); Williams, C. (1); Perez, E. (1); Muniz, G (1); Wahl, D. (1); Sassolas, B. (1); Klein, E (1); Weiss, E (1); Mitchell, A. (1); Garcia, E. (1); Costa, J (1); Valentini, G (1); Schmidt, K. (1); Nordin, A (1); Schneider, K. (1); Greco, M. (1); Brodmann, M (1); Dobson, J. (1); Smit, A (1); Giacomelli, R. (1); Bootsma, H. (1); Mathieu, A. (1); Rabe, B. (1); Brandeker, Alexis (1); Denton, C (1); Riemekasten, G (1); Simeon, CP (1); Airo, P (1); Herrick, A (1); Madhok, R (1); Kreuter, A (1); Scorza, R (1); Nemec, P (1); Garyfallos, A (1); Podda, M (1); Schaefer, C (1); Santos, P (1); Moore, T (1); Santos, C. (1); Mittag, M (1); Anderson, M. (1); Mayer, L. (1); Cruz, A (1); Boehm, J. (1); show less...

University: Stockholm University (1); Karolinska Institutet (1)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2013 (2)Undo refine

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