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

P. Scicluna*, F. Kemper, I. McDonald, S. Srinivasan, A. Trejo, S. H.J. Wallström, J. G.A. Wouterloot, J. Cami, J. Greaves, Jinhua He, D. T. Hoai, Hyosun Kim, O. C. Jones, H. Shinnaga, C. J.R. Clark, T. Dharmawardena, W. Holland, H. Imai, J. Th Van Loon, K. M. MentenR. Wesson, H. Chawner, S. Feng, S. Goldman, F. C. Liu, H. MacIsaac, J. Tang, S. Zeegers, K. Amada, V. Antoniou, A. Bemis, M. L. Boyer, S. Chapman, X. Chen, S. H. Cho, L. Cui, F. Dell'Agli, P. Friberg, S. Fukaya, H. Gomez, Y. Gong, M. Hadjara, C. Haswell, N. Hirano, S. Hony, H. Izumiura, M. Jeste, X. Jiang, T. Kaminski, N. Keaveney, J. Kim, K. E. Kraemer, Y. J. Kuan, E. Lagadec, C. F. Lee, D. Li, S. Y. Liu, T. Liu, I. De Looze, F. Lykou, C. Maraston, J. P. Marshall, M. Matsuura, C. Min, M. Otsuka, M. Oyadomari, H. Parsons, N. A. Patel, E. Peeters, T. A. Pham, J. Qiu, S. Randall, G. Rau, M. P. Redman, A. M.S. Richards, S. Serjeant, C. Shi, G. C. Sloan, M. W.L. Smith, K. W. Suh, J. A. Toalá, S. Uttenthaler, P. Ventura, B. Wang, I. Yamamura, T. Yang, Y. Yun, F. Zhang, Y. Zhang, G. Zhao, M. Zhu, A. A. Zijlstra

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

The Nearby Evolved Stars Survey (NESS) is a volume-complete sample of ∼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 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 × 10-5 M⊙ 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 μm spectral indices are consistent with the blackbody Rayleigh-Jeans regime, suggesting a large fraction of evolved stars have unexpectedly large envelopes of cold dust.

原文英語
頁(從 - 到)1091-1110
頁數20
期刊Monthly Notices of the Royal Astronomical Society
512
發行號1
DOIs
出版狀態已發佈 - 2022 5月 1

ASJC Scopus subject areas

  • 天文和天體物理學
  • 空間與行星科學

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