Browsing by Author "Kuhn, Michael A."

Now showing items 1-5 of 5

    • Clustering Properties of Intermediate and High-mass Young Stellar Objects 

      Vioque, Miguel; Cavieres, Manuel; González, Michelangelo Pantaleoni; Ribas, Álvaro; Oudmaijer, René D.; Mendigutía, Ignacio; Kilian, Lena; Canovas, Héctor; Kuhn, Michael A. (2023-11-01)
      We have selected 337 intermediate- and high-mass young stellar objects (YSOs; 1.5–20 M ⊙) well-characterized with spectroscopy. By means of the clustering algorithm HDBSCAN, we study their clustering and association ...

    • Evolution of X-Ray Activity in <25 Myr Old Pre-main Sequence Stars 

      Getman, Konstantin V.; Feigelson, Eric D.; Garmire, Gordon P.; Broos, Patrick S.; Kuhn, Michael A.; Preibisch, Thomas; Airapetian, Vladimir S. (2022-08-10)
      Measuring the evolution of X-ray emission from pre-main-sequence (PMS) stars gives insight into two issues: the response of magnetic dynamo processes to changes in the interior structure, and the effects of high-energy ...

    • LkH$α$ 225 (V1318 Cyg) South in Outburst 

      Hillenbrand, Lynne A.; Isaacson, Howard; Rodriguez, Antonio C.; Connelley, Michael; Reipurth, Bo; Kuhn, Michael A.; Beck, Tracy; Perez, Diego Rodriguez (2022-03-31)
      Magakian et al. called attention to the current bright state of LkHα 225 South, a well-known highly embedded,intermediate-mass young stellar object that over the past two decades has brightened visually from >20m to <13m.We ...

    • Spectroscopic Confirmation of a Population of Isolated, Intermediate-mass Young Stellar Objects 

      Kuhn, Michael A.; Saber, Ramzi; Povich, Matthew S.; de Souza, Rafael S.; Krone-Martins, Alberto; Ishida, Emille E.~O.; Zucker, Catherine; Benjamin, Robert A.; Hillenbrand, Lynne A.; Castro-Ginard, Alfred; Zhou, Xingyu; Collaboration, COIN (2023-01-31)
      Wide-field searches for young stellar objects (YSOs) can place useful constraints on the prevalence of clustered versus distributed star formation. The Spitzer/IRAC Candidate YSO (SPICY) catalog is one of the largest ...

    • XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk 

      Ramírez-Tannus, María Claudia; Bik, Arjan; Cuijpers, Lars; Waters, Rens; Göppl, Christiane; Henning, Thomas; Kamp, Inga; Preibisch, Thomas; Getman, Konstantin V.; Chaparro, Germán; Cuartas-Restrepo, Pablo; de Koter, Alex; Feigelson, Eric D.; Grant, Sierra L.; Haworth, Thomas J.; Hernández, Sebastián; Kuhn, Michael A.; Perotti, Giulia; Povich, Matthew S.; Reiter, Megan; Roccatagliata, Veronica; Sabbi, Elena; Tabone, Benoît; Winter, Andrew J.; McLeod, Anna F.; van Boekel, Roy; van Terwisga, Sierk E. (2023-12-01)
      We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions. These regions are ...