Scicluna, P;
Kemper, F;
McDonald, I;
Srinivasan, S;
Trejo, A;
Wallstrom, SHJ;
Wouterloot, JGA;
... Zijlstra, AA; + view all
(2022)
The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope.
Monthly Notices of the Royal Astronomical Society
, 512
(1)
pp. 1091-1110.
10.1093/mnras/stab2860.
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Abstract
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 $\mu$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.
| Type: | Article |
|---|---|
| Title: | The Nearby Evolved Stars Survey II: Constructing a volume-limited sample and first results from the James Clerk Maxwell Telescope |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stab2860 |
| Publisher version: | https://doi.org/10.1093/mnras/stab2860 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Astronomy & Astrophysics, catalogues, surveys, stars: AGB and post-AGB, stars: mass-loss, stars: winds, outflows, MASS-LOSS RATES, PERIOD-LUMINOSITY RELATION, CIRCUMSTELLAR CO EMISSION, CARBON-MONOXIDE EMISSION, REVISED AFGL CATALOGS, LOW-TEMPERATURE MIR, GIANT BRANCH STARS, AGB STARS, TP-AGB, ABSORPTION-COEFFICIENT |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10147262 |
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