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 - 2022
#notes
1 HD 256 ** 00 07 18.2658367200 -17 23 13.173158760   6.311 6.203 7.36   A3Vn_sh 105 0
2 * 49 Cet PM* 01 34 37.7786780856 -15 40 34.898673000   5.667 5.607   5.54 A1V 273 0
3 HD 21620 EB* 03 31 29.3403535800 +49 12 35.181649440 6.390 6.350 6.280     A0Vn 62 0
4 NAME LIC Cld 04 41 +31.           ~ 275 0
5 HD 32297 * 05 02 27.4358754192 +07 27 39.678553260   8.32 8.14     A0V 173 0
6 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1796 1
7 HD 53842 PM* 06 46 13.5367594104 -83 59 29.517958896   8.880 8.622     F5V 66 0
8 HD 61950 * 07 36 19.2609869616 -69 03 23.546586528   6.85 6.87     B8V 13 0
9 HD 67536 Pu* 08 04 42.9317148096 -62 50 10.843210284   6.136 6.241     B2Vn 56 1
10 * eta Cha * 08 41 19.5125857944 -78 57 48.105898056 5.02 5.351 5.453     B8V 221 0
11 NAME eta Cha Association OpC 08 42 33 -78 57.8           ~ 342 0
12 HD 76131 * 08 51 45.5508173088 -55 48 31.875933456   6.634 6.684     B6III 21 0
13 HD 80950 * 09 17 27.5695868640 -74 44 04.524994932   5.844 5.857     A0V 47 0
14 * q Vel PM* 10 14 44.1557297 -42 07 18.993292 3.98 3.90 3.85 3.83 3.81 A2Va 128 0
15 * K Car * 10 30 20.1271003 -71 59 34.060213   4.751 4.710     A1V 78 0
16 * phi Leo PM* 11 16 39.6995972 -03 39 05.777018   4.654 4.450     A5V 121 0
17 * gam Crt PM* 11 24 52.9236199 -17 41 02.429978   4.25 4.06 6.12   A7V(n) 123 0
18 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 420 1
19 HD 107663 * 12 22 36.5288431632 -49 19 34.090925412   8.08 7.94     A2IV/V 14 0
20 HD 109324 PM* 12 34 08.8441228056 -50 03 36.956733588   7.39 7.23     A3V 10 0
21 HD 109675 * 12 36 46.5968944320 -50 20 07.437736212   6.41 6.39     A0V 16 0
22 HD 110058 * 12 39 46.1962525608 -49 11 55.550898744   8.12 7.97     A0V 69 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 218 0
24 HD 117360 PM* 13 33 13.6589148360 -77 34 09.801727929   6.96 6.52     F8VFe-0.9 50 1
25 HD 123247 * 14 07 40.8080262960 -48 42 14.498997408 6.390 6.415 6.418     B9.5V 30 0
26 HD 131625 * 14 55 44.7084250488 -33 51 20.817083448   5.353 5.312     A0V 52 0
27 * 40 Boo PM* 14 59 36.9470701872 +39 15 55.196640648   5.955 5.634     F1III-IV 49 0
28 * bet Cir PM* 15 17 30.8501567 -58 48 04.337319   4.153 4.057     A3Va 118 0
29 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 421 1
30 HD 142758 s*b 15 59 23.7399409248 -58 43 34.398774588 6.62 7.236 7.072 7.96   B1Ia 57 0
31 HD 143448 Be* 16 03 44.4675408984 -60 29 54.471253992 6.49 7.25 7.30 8.29   B1Ve 76 0
32 NAME Upper Sco Association As* 16 12 -23.4           ~ 1216 1
33 HD 145964 * 16 14 28.8827284680 -21 06 27.491575572   6.407 6.405     B9V 77 0
34 * tet Nor PM* 16 15 15.3177605472 -47 22 19.271560980   5.007 5.124     B8V 43 0
35 HD 166841 * 18 18 00.9612926184 -68 13 45.347971800   6.291 6.328     B8/9V 28 1
36 HD 172555 PM* 18 45 26.9009806435 -64 52 16.534807985   4.967 4.767     A7V 258 0
37 * zet CrA PM* 19 03 06.8769803 -42 05 42.385816   4.701 4.725   4.76 B9.5Vann 70 0
38 HD 181237 * 19 20 26.0300842080 -18 51 47.719681344   9.92 8.39     K3III 6 0
39 HD 181327 PM* 19 22 58.9437222504 -54 32 16.975668624   7.50 7.04   6.49 F6V 257 0
40 * alf Sgr PM* 19 23 53.1748283 -40 36 57.370456 3.54 3.841 3.943     B8V 93 0
41 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 174 0
42 HD 191089 PM* 20 09 05.2156358688 -26 13 26.520165768   7.62 7.18     F5V 134 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-0.7 396 0

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2022.09.26-08:55:32

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