The Astrophysical Journal is a leading scientific journal that publishes original research articles in the field of astrophysics. The articles cover a wide range of topics such as cosmology, planetary science, star formation, and high-energy astrophysics. The journal has been published since 1895 and is recognized as a primary source of information for astrophysicists around the world. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.