NRC Herzberg Astronomy

Jan 6, 2025 | academic.oup.com | Gower Street |NRC Herzberg Astronomy

We present 450 m and 850 m James Clerk Maxwell Telescope (JCMT) observations of the Corona Australis (CrA) molecular cloud taken as part of the JCMT Gould Belt Legacy Survey (GBLS). We present a catalogue of 39 starless and protostellar sources, for which we determine source temperatures and masses using SCUBA-2 450 m/850 m flux density ratios for sources with reliable 450 m detections, and compare these to values determined using temperatures measured by the Herschel Gould Belt Survey (HGBS).

Jun 28, 2024 | inria.hal.science | NRC Herzberg Astronomy |Jean-Marc Petit |Abedin Abedin |J. Kavelaars

Article Dans Une Revue The Astronomical Journal Année : 2022 OSSOS. XXVI. On the Lack of Catastrophic Collisions in the Present Kuiper Belt Mots clés Trans-Neptunian objects Collisional processes Kuiper belt Planetesimals Fichier principal Abedin_2022_AJ_164_261.pdf (1.63 Mo) Télécharger le fichier Origine Fichiers éditeurs autorisés sur une archive ouverte hal-04627165 , version 1 (28-06-2024) Abedin Abedin, J.

Apr 24, 2024 | academic.oup.com | Simon FRASER |NRC Herzberg Astronomy

Determining stellar population properties (such as the mean stellar age and metallicity) of a galaxy based on its integrated optical spectrum has been a challenge for several decades. Pioneers of methods to derive stellar population properties from spectra (or broad-band spectral energy distributions) include Morgan (1956), Wood (1966), Tinsley (1968), Faber (1972), and Spinrad (1972).