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Title: FIRST IMAGES OF DEBRIS DISKS AROUND TWA 7, TWA 25, HD 35650, AND HD 377

We present the first images of four debris disks observed in scattered light around the young (4–250 Myr old) M dwarfs TWA 7 and TWA 25, the K6 star HD 35650, and the G2 star HD 377. We obtained these images by reprocessing archival Hubble Space Telescope NICMOS coronagraph data with modern post-processing techniques as part of the Archival Legacy Investigation of Circumstellar Environments program. All four disks appear faint and compact compared with other debris disks resolved in scattered light. The disks around TWA 25, HD 35650, and HD 377 appear very inclined, while TWA 7's disk is viewed nearly face-on. The surface brightness of HD 35650's disk is strongly asymmetric. These new detections raise the number of disks resolved in scattered light around M and late-K stars from one (the AU Mic system) to four. This new sample of resolved disks enables comparative studies of heretofore scarce debris disks around low-mass stars relative to solar-type stars.
Authors:
; ; ; ; ; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4] ; ;  [5]
  1. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
  2. Arizona State University, Phoenix, AZ 85004 (United States)
  3. Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
  4. Univ. Grenoble Alpes, IPAG, F-38000 Grenoble (France)
  5. Johns Hopkins University, 3400 North Charles Street, Baltimore MD 21218 (United States)
Publication Date:
OSTI Identifier:
22518633
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 817; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASYMMETRY; BRIGHTNESS; COMPARATIVE EVALUATIONS; DETECTION; IMAGE PROCESSING; IMAGES; MAIN SEQUENCE STARS; MASS; REPROCESSING; SOLAR CORONA; SPACE; TELESCOPES; VISIBLE RADIATION