The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope

Bibliographic Details
Title: The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope
Authors: Scicluna, P., Kemper, F., McDonald, I., Srinivasan, S., Trejo, A., Wallström, S. H. J., Wouterloot, J. G. A., Cami, J., Greaves, J., He, Jinhua, Hoai, D. T., Kim, Hyosun, Jones, O. C., Shinnaga, H., Clark, C. J. R., Dharmawardena, T., Holland, W., Imai, H., van Loon, J. Th., Menten, K. M., Wesson, R., Chawner, H., Feng, S., Goldman, S., Liu, F. C., MacIsaac, H., Tang, J., Zeegers, S., Amada, K., Antoniou, V., Bemis, A., Boyer, M. L., Chapman, S., Chen, X., Cho, S. -H., Cui, L., Dell'Agli, F., Friberg, P., Fukaya, S., Gomez, H., Gong, Y., Hadjara, M., Haswell, C., Hirano, N., Hony, S., Izumiura, H., Jeste, M., Jiang, X., Kaminski, T., Keaveney, N., Kim, J., Kraemer, K. E., Kuan, Y. -J., Lagadec, E., Lee, C. F., Li, D., Liu, S. -Y., Liu, T., de Looze, I., Lykou, F., Maraston, C., Marshall, J. P., Matsuura, M., Min, C., Otsuka, M., Oyadomari, M., Parsons, H., Patel, N. A., Peeters, E., Pham, T. A., Qiu, J., Randall, S., Rau, G., Redman, M. P., Richards, A. M. S., Serjeant, S., Shi, C., Sloan, G. C., Smith, M. W. L., Suh, K. -W., Toalá, J. A., Uttenthaler, S., Ventura, P., Wang, B., Yamamura, I., Yang, T., Yun, Y., Zhang, F., Zhang, Y., Zhao, G., Zhu, M., Zijlstra, A. A.
Publication Year: 2021
Collection: Astrophysics
Subject Terms: Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
More Details: The Nearby Evolved Stars Survey (NESS) is a volume-complete sample of $\sim$850 Galactic evolved stars within 3\,kpc at (sub-)mm wavelengths, observed in the CO $J = $ (2$-$1) and (3$-$2) rotational lines, and the sub-mm continuum, using the James Clark Maxwell Telescope and Atacama Pathfinder Experiment. NESS consists of five tiers, based on distances and dust-production rate (DPR). We define a new metric for estimating the distances to evolved stars and compare its results to \emph{Gaia} EDR3. Replicating other studies, the most-evolved, highly enshrouded objects in the Galactic Plane dominate the dust returned by our sources, and we initially estimate a total DPR of $4.7\times 10^{-5}$ M$_\odot$ yr$^{-1}$ from our sample. Our sub-mm fluxes are systematically higher and spectral indices are typically shallower than dust models typically predict. The 450/850 $\mu$m spectral indices are consistent with the blackbody Rayleigh--Jeans regime, suggesting a large fraction of evolved stars have unexpectedly large envelopes of cold dust.
Comment: 20 pages, 13 figures, 5 tables, accepted for publications in MNRAS
Document Type: Working Paper
DOI: 10.1093/mnras/stab2860
Access URL: http://arxiv.org/abs/2110.12562
Accession Number: edsarx.2110.12562
Database: arXiv