2017MNRAS.466.3582H

Query : 2017MNRAS.466.3582H

2017MNRAS.466.3582H - Mon. Not. R. Astron. Soc., 466, 3582-3593 (2017/April-2)

Atomic gas in debris discs.

HALES A.S., BARLOW M.J., CRAWFORD I.A. and CASASSUS S.

Abstract (from CDS):

We have conducted a search for optical circumstellar absorption lines in the spectra of 16 debris disc host stars. None of the stars in our sample showed signs of emission line activity in either Hα, Ca II or Na I, confirming their more evolved nature. Four stars were found to exhibit narrow absorption features near the cores of the photospheric Ca II and Na I D lines (when Na I D data were available). We analyse the characteristics of these spectral features to determine whether they are of circumstellar or interstellar origins. The strongest evidence for circumstellar gas is seen in the spectrum of HD 110058, which is known to host a debris disc observed close to edge-on. This is consistent with a recent ALMA detection of molecular gas in this debris disc, which shows many similarities to the β Pictoris system.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: spectroscopic - circumstellar matter - circumstellar matter

Simbad objects: 43

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Number of rows : 43
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 256 ** 00 07 18.2658367200 -17 23 13.173158760   6.311 6.203     A3Vn_sh 113 0
2 * 49 Cet PM* 01 34 37.7786780856 -15 40 34.898673000   5.667 5.607   5.54 A1V 348 0
3 HD 21620 EB* 03 31 29.3403535800 +49 12 35.181649440 6.390 6.350 6.280     A0Vn 69 0
4 NAME LIC Cld 04 41 +31.           ~ 317 0
5 HD 32297 * 05 02 27.4358754192 +07 27 39.678553260   8.32 8.14     A0V 234 0
6 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 2087 1
7 HD 53842 PM* 06 46 13.5367594104 -83 59 29.517958896   7.90 7.46     F5V 85 0
8 HD 61950 Be* 07 36 19.2609869616 -69 03 23.546586528   6.85 6.87     B7IVe 19 0
9 HD 67536 Pu* 08 04 42.9317148096 -62 50 10.843210284   6.136 6.241     B2Vn 72 1
10 * eta Cha Pu* 08 41 19.5125857944 -78 57 48.105898056 5.02 5.351 5.453     B8V 246 0
11 Cl Mamajek 1 OpC 08 42 32.9 -78 57 47           ~ 392 0
12 HD 76131 * 08 51 45.5508173088 -55 48 31.875933456   6.634 6.684     B6III 26 0
13 HD 80950 * 09 17 27.5695868640 -74 44 04.524994932   5.844 5.857     A0V 59 0
14 * q Vel PM* 10 14 44.1556880397 -42 07 18.988830783 3.98 3.90 3.85 3.83 3.81 A2Va 146 0
15 * K Car * 10 30 20.1277680782 -71 59 34.057907711   4.751 4.710     A1V 90 0
16 * phi Leo PM* 11 16 39.6997760978 -03 39 05.771550444   4.654 4.450     A5V 135 0
17 * gam Crt PM* 11 24 52.9236160183 -17 41 02.442764421   4.25 4.06 6.12   A7V(n) 139 0
18 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
19 HD 107663 * 12 22 36.5288431632 -49 19 34.090925412   8.08 7.94     A2IV/V 19 0
20 HD 109324 PM* 12 34 08.8441228056 -50 03 36.956733588   7.39 7.23     A3V 15 0
21 HD 109675 * 12 36 46.5968944320 -50 20 07.437736212   6.41 6.39     A0V 22 0
22 HD 110058 * 12 39 46.1962525608 -49 11 55.550898744   8.12 7.97     A0V 110 0
23 * rho Vir dS* 12 41 53.0569475088 +10 14 08.252569320 5.00 4.97 4.88 4.80 4.78 A0Va_lB 232 0
24 HD 117360 PM* 13 33 13.6589148360 -77 34 09.801727929   6.96 6.52     F8VFe-0.9 61 1
25 HD 123247 * 14 07 40.8080262960 -48 42 14.498997408 6.390 6.415 6.418     B9.5V 42 0
26 HD 131625 * 14 55 44.7084250488 -33 51 20.817083448   5.353 5.312     A0V 60 0
27 * 40 Boo PM* 14 59 36.9470701872 +39 15 55.196640648   5.955 5.634     F1III-IV 56 0
28 * bet Cir PM* 15 17 30.8494520580 -58 48 04.345266926   4.153 4.057     A3Va 136 0
29 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
30 HD 142758 s*b 15 59 23.7399409248 -58 43 34.398774588 6.62 7.236 7.072 7.96   B1Ia 66 0
31 HD 143448 Be* 16 03 44.4675408984 -60 29 54.471253992 6.49 7.25 7.30 8.29   B0Ve: 86 0
32 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
33 HD 145964 * 16 14 28.8827284680 -21 06 27.491575572   6.407 6.405     B9V 91 0
34 * tet Nor PM* 16 15 15.3177605472 -47 22 19.271560980   5.007 5.124     B8V 51 0
35 HD 166841 * 18 18 00.9612926184 -68 13 45.347971800   6.291 6.328     B8/9V 33 0
36 HD 172555 PM* 18 45 26.9009806435 -64 52 16.534807985   4.967 4.767     A7V 321 0
37 * zet CrA PM* 19 03 06.8768335825 -42 05 42.380397917   4.701 4.725   4.76 B9.5Vann 79 0
38 HD 181237 * 19 20 26.0300842080 -18 51 47.719681344   9.92 8.39     K3III 8 0
39 HD 181327 PM* 19 22 58.9437222504 -54 32 16.975668624   7.50 7.04   6.49 F6V 331 0
40 * alf Sgr PM* 19 23 53.1753985532 -40 36 57.373929695 3.54 3.841 3.943     B8V 110 0
41 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 188 0
42 HD 191089 SB? 20 09 05.2156358688 -26 13 26.520165768   7.62 7.18     F5V 177 0
43 * gam Pav PM* 21 26 26.6049826473 -65 21 58.313057521 4.57 4.70 4.22 3.75 3.45 F9VFe-1.4CH-0.7 439 0

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