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

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

邻近演化恒星巡天 II:构建体积有限的样本以及詹姆斯·克拉克·麦克斯韦望远镜的第一个结果

DOI:
10.1093/mnras/stab2860
复制
发表时间:
2021-10
期刊:
MNRAS
影响因子:
--
通讯作者:
et al.
et al.
中科院分区:
其他
文献类型:
--
作者:
P. Scicluna;F. Kemper;I. McDonald;S. Srinivasan;A. Trejo;S. H. J. Wallstro ̈m;J. G. A. Wouterloot;J. Cami;J. Greaves;Jinhua He;D. T. Hoai;et al.

文献摘要

参考文献

相似文献

近地演化恒星巡天(NESS)是利用詹姆斯·克拉克麦克斯韦望远镜和阿塔卡马探路者实验,在COJ=(2-1)和(3-2)旋转谱线以及亚毫米连续谱中观测到的,在3千秒差距以内,在(亚)毫米波长上的10850颗银河系演化恒星的体积完整样本。NESS根据距离和粉尘产生率(DPR)分为五个等级。我们定义了一个新的度量估计的距离演化恒星和比较其结果toGaiaEDR 3。与其他研究相同,银河平面中进化最快、高度隐蔽的天体在我们的来源返回的尘埃中占主导地位,我们最初估计我们样本的总DPR为4.7 × 10− 5 M yr− 1。我们的亚毫米通量系统较高,光谱指数通常比尘埃模型通常预测的要浅。450/850米的光谱指数与黑体瑞利-金斯制度一致,这表明大部分演化的恒星具有意想不到的大的冷尘埃包层。
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 COJ= (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 toGaiaEDR3. 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 × 10−5M⊙yr−1from our sample. Our sub-mm fluxes are systematically higher and spectral indices are typically shallower than dust models typically predict. The 450/850m spectral indices are consistent with the blackbody Rayleigh–Jeans regime, suggesting a large fraction of evolved stars have unexpectedly large envelopes of cold dust.
DOI: 10.1117/12.2249685
发表时间: 2016-08
期刊: --
影响因子: --
作者:
W. Holland;J. Zmuidzinas
通讯作者: W. Holland;J. Zmuidzinas
DOI: 10.1017/cbo9780511819056.007
发表时间: 2005-08
期刊: --
影响因子: --
作者:
A. Tielens
通讯作者: A. Tielens
DOI: 10.1142/s2251158x13000362
发表时间: 2006
期刊: --
影响因子: --
作者:
通讯作者: --
DOI: --
发表时间: 2003-06
期刊: --
影响因子: --
作者:
R. Cutri;M. Skrutskie;S. V. Dyk;C. Beichman;J. Carpenter;T. Chester;L. Cambrésy;T. Evans;J. Fow
通讯作者: R. Cutri;M. Skrutskie;S. V. Dyk;C. Beichman;J. Carpenter;T. Chester;L. Cambrésy;T. Evans;J. Fow
DOI: --
发表时间: 2001
期刊: --
影响因子: --
作者:
PhD Deepto Chakrabarty;PhD Lindley Winslow;PhD Raymond Ashoori;PhD Edmund Bertschinger;PhD Claude R. Canizares-PhD-Claude-R.
通讯作者: PhD Deepto Chakrabarty;PhD Lindley Winslow;PhD Raymond Ashoori;PhD Edmund Bertschinger;PhD Claude R. Canizares-PhD-Claude-R.