An ALMA Survey of Protoplanetary Disks in Lynds 1641
Sierra L. Grant, Catherine C. Espaillat, John Wendeborn, John J., Tobin, Enrique Mac\'ias, Anneliese Rilinger, \'Alvaro Ribas, S. Thomas, Megeath, William J. Fischer, Nuria Calvet, Kyoung Hee Kim

TL;DR
This study uses ALMA observations to analyze 101 protoplanetary disks in Lynds 1641, revealing their dust and gas properties, evolutionary trends, and a notably massive disk population compared to similar regions.
Contribution
First comprehensive ALMA survey of protoplanetary disks in Lynds 1641, providing detailed dust and gas measurements and comparing disk properties across evolutionary stages and regions.
Findings
High detection rate of dust continuum (88%) among disks.
Lynds 1641 hosts a relatively massive disk population.
Dust mass decreases with evolutionary state.
Abstract
We present ALMA observations of 101 protoplanetary disks within the star-forming region Lynds 1641 in the Orion Molecular Cloud A. Our observations include 1.33 mm continuum emission and spectral windows covering the J=2-1 transition of CO, CO, and CO. We detect 89 protoplanetary disks in the dust continuum at the 4 level (88% detection rate) and 31 in CO, 13 in CO, and 4 in CO. Our sample contains 23 transitional disks, 20 of which are detected in the continuum. We target infrared-bright Class II objects, which biases our sample towards massive disks. We determine dust masses or upper limits for all sources in our sample and compare our sample to protostars in this region. We find a decrease in dust mass with evolutionary state. We also compare this sample to other regions surveyed in the (sub-)millimeter and find that Lynds 1641…
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