2005ApJS..159..118W


Query : 2005ApJS..159..118W

2005ApJS..159..118W - Astrophys. J., Suppl. Ser., 159, 118-140 (2005/July-0)

Stellar Lyα emission lines in the Hubble space telescope archive: intrinsic line fluxes and absorption from the heliosphere and astrospheres.

WOOD B.E., REDFIELD S., LINSKY J.L., MULLER H.-R. and ZANK G.P.

Abstract (from CDS):

We search the Hubble Space Telescope (HST) archive for previously unanalyzed observations of stellar H I Lyα emission lines, our primary purpose being to look for new detections of Lyα absorption from the outer heliosphere and to also search for analogous absorption from the astrospheres surrounding the observed stars. The astrospheric absorption is of particular interest because it can be used to study solar-like stellar winds that are otherwise undetectable. We find and analyze 33 HST Lyα spectra in the archive. All the spectra were taken with the E140M grating of the Space Telescope Imaging Spectrograph (STIS) instrument on board HST. The HST STIS spectra yield four new detections of heliospheric absorption (70 Oph, ξ Boo, 61 Vir, and HD 165185) and seven new detections of astrospheric absorption (EV Lac, 70 Oph, ξ Boo, 61 Vir, δ Eri, HD 128987, and DK UMa), doubling the previous number of heliospheric and astrospheric detections. When combined with previous results, 10 of 17 lines of sight within 10 pc yield detections of astrospheric absorption. This high detection fraction implies that most of the ISM within 10 pc must be at least partially neutral, since the presence of H I within the ISM surrounding the observed star is necessary for an astrospheric detection. In contrast, the detection percentage is only 9.7% (3 out of 31) for stars beyond 10 pc. Our Lyα analyses provide measurements of ISM H I and D I column densities for all 33 lines of sight, and we discuss some implications of these results. Finally, we measure chromospheric Lyα fluxes from the observed stars. We use these fluxes to determine how Lyα flux correlates with coronal X-ray and chromospheric Mg II emission, and we also study how Lyα emission depends on stellar rotation.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - ISM: Structure - Stars: Chromospheres - Stars: Winds, Outflows - Ultraviolet: ISM - Ultraviolet: Stars

Simbad objects: 67

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Number of rows : 67
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 166 BY* 00 06 36.7840068588 +29 01 17.412693890   6.88   5.6   G8 332 1
2 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 509 0
3 V* PW And RS* 00 18 20.8895755560 +30 57 22.129174872   9.78 8.86 8.3 7.78 K2V 113 1
4 * bet Cet PM* 00 43 35.37090 -17 59 11.7827 3.90 3.02 2.01 1.29 0.78 G9.5IIICH-1 508 0
5 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1173 1
6 * alf Tri SB* 01 53 04.9070960 +29 34 43.780094 3.96 3.90 3.42 3.00 2.72 F5III 281 0
7 V* FS Cet ** 02 35 07.5939240480 +03 43 56.816311296 11.027 12.209 12.412 12.325 11.968 DA1+dM 361 0
8 HD 17925 RS* 02 52 32.1281856011 -12 46 10.968056223 7.48 6.91 6.05 5.34 4.89 K1V 486 0
9 NAME G Cloud Cld 03 00 +50.2           ~ 67 0
10 * kap01 Cet BY* 03 19 21.6963205 +03 22 12.715139 5.71 5.52 4.85 4.27 3.91 G5V 849 0
11 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 1806 1
12 HD 22468 RS* 03 36 47.2911034958 +00 35 15.938962144 7.09 6.79 5.90 5.4   K2:Vnk 1147 0
13 * del Eri * 03 43 14.9005379551 -09 45 48.210955899 5.13 4.46 3.54 2.82 2.32 K0+IV 574 0
14 V* V471 Tau EB* 03 50 24.9666549840 +17 14 47.430910716   10.258 9.373   8.393 K2V+DA 639 0
15 * omi02 Eri Er* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 774 0
16 HD 28033 SB* 04 26 18.4982775648 +21 28 13.548422352   7.897 7.334     F8V 151 0
17 V* V993 Tau BY* 04 27 35.8912011816 +15 35 21.090336828   7.949 7.404 7.102 6.805 ~ 218 0
18 HD 28568 PM* 04 30 46.7980744680 +16 08 55.251488976   6.940 6.491 7.51   ~ 176 0
19 NAME LIC Cld 04 41 +31.           ~ 272 0
20 * 63 Eri SB* 04 59 50.4534782856 -10 15 47.916588204   6.180 5.390     G4IV-V+DA 102 1
21 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1035 0
22 * zet Dor PM* 05 05 30.6556741368 -57 28 21.736898832   5.215 4.708     F9VFe-0.5 227 0
23 * alf Aur SB* 05 16 41.35871 +45 59 52.7693 1.33 0.88 0.08 -0.52 -0.96 G3III: 1159 0
24 HD 37394 BY* 05 41 20.3356800431 +53 28 51.808818686 7.58 7.07 6.23 5.54 5.11 K1 313 0
25 * chi01 Ori RS* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 824 0
26 HD 43162 LM* 06 13 45.2953762392 -23 51 42.971547996   7.068 6.366 5.94 5.61 G6.5V 160 0
27 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1471 0
28 HD 59967 PM* 07 30 42.5117581608 -37 20 21.706958688 7.386 7.274 6.635 6.28 5.945 G3V 144 0
29 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1822 0
30 * sig Gem RS* 07 43 18.7269793 +28 53 00.642191 6.38 5.41 4.29 3.37 2.79 K1IIIe 463 0
31 * bet Gem PM* 07 45 18.94987 +28 01 34.3160 3.00 2.14 1.14 0.39 -0.11 K0IIIb 1075 1
32 V* V401 Hya BY* 08 37 50.2937396460 -06 48 24.779911420 7.577 7.394 6.725 6.365 6.029 G8/K0(IV) 153 0
33 V* LQ Hya BY* 09 32 25.5683895648 -11 11 04.692242760 9.316 8.761 7.891 7.288 6.815 K1Vp 429 0
34 HD 82443 BY* 09 32 43.7594578944 +26 59 18.706023348   7.78   6.6   G9V(k) 231 1
35 * d UMa RS* 09 34 28.8594727848 +69 49 49.226541888 5.67 5.34 4.57 3.91 3.50 G5III-IV 286 0
36 BD+20 2465 Er* 10 19 36.2808181226 +19 52 12.010446571   10.82 9.52 9.19   dM3 1228 0
37 * mu. Vel ** 10 46 46.17877 -49 25 12.9244 4.16 3.59 2.69 2.01 1.52 G6III 177 0
38 HD 97334 BY* 11 12 32.3503039560 +35 48 50.688978228   7.02   6.0   G2 270 0
39 HD 106516 SB* 12 15 10.55731 -10 18 44.6354 6.44 6.57 6.11     F9VFe-1.7CH-0.7 401 0
40 * 31 Com Ro* 12 51 41.9201696640 +27 32 26.565016812 5.81 5.61 4.94 4.39 4.04 G0IIIp 417 1
41 HZ 43A WD* 13 16 21.8529879473 +29 05 55.413524767   12.52 12.66     DAwk 460 0
42 * 61 Vir PM* 13 18 24.3139864471 -18 18 40.297748582 5.710 5.440 4.740     G6.5V 631 1
43 HD 116956 BY* 13 25 45.5320130664 +56 58 13.776984840 8.540 8.090   6.8   G9V 112 0
44 * alf Cen ** 14 39 29.71993 -60 49 55.9990   0.4 -0.1     G2V+K1V 890 0
45 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 963 1
46 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1206 0
47 V* KU Lib BY* 14 40 31.1063299272 -16 12 33.452598312 8.247 7.977 7.240 6.837 6.47 G8Vk: 89 0
48 * ksi Boo BY* 14 51 23.37993 +19 06 01.6994 5.618 5.370 4.593 3.91 3.48 G7Ve+K5Ve 452 0
49 * ksi Boo A PM* 14 51 23.3884659504 +19 06 01.619801424   5.40 4.675     G7Ve 515 0
50 * chi Her PM* 15 52 40.5410491705 +42 27 05.462878877 5.19 5.19 4.62 4.14 3.82 F8VFe-2Hdel-1 490 0
51 * 36 Oph A PM* 17 15 20.7836485323 -26 36 06.117207947   5.93 5.08     K2V 259 0
52 * 70 Oph ** 18 05 27.28518 +02 30 00.3558 5.40 4.89 4.03 3.38 2.92 K0-V 629 0
53 HD 165185 PM* 18 06 23.7195191736 -36 01 11.230597272 6.64 6.57 5.95 5.58   G1V 158 0
54 V* AU Mic LM* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1006 0
55 V* BO Mic BY* 20 47 45.0056152368 -36 35 40.769832192   10.39 9.337   8.216 K3V(e) 179 0
56 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 997 0
57 * iot Cap BY* 21 22 14.7956478 -16 50 04.359799 5.74 5.18 4.27 3.65 3.17 G7IIIFe-1.5 186 0
58 HD 203244 PM* 21 24 40.5220958049 -68 13 40.527845137   7.70 6.97     G5V 76 0
59 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1046 1
60 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 508 0
61 * nu. Peg PM* 22 05 40.7509642224 +05 03 30.708590796 8.08 6.28 4.84 3.77 3.01 K4III 100 0
62 V* EV Lac Er* 22 46 49.7312610268 +44 20 02.374381562   11.85 10.26 9.89   M4.0Ve 851 2
63 GD 246 WD* 23 12 21.6158334024 +10 47 04.257295476 11.578 12.772 13.090 13.238 13.418 DA.9 208 0
64 HD 220140 RS* 23 19 26.6385484104 +79 00 12.673035540   8.43 7.54 7.17 6.76 G9V 135 1
65 * ups Peg PM* 23 25 22.7828725585 +23 24 14.762916815 5.15 5.01 4.40 3.86 3.54 F8III 247 0
66 * lam And RS* 23 37 33.8427800830 +46 27 29.344721109 5.54 4.84 3.82 3.04 2.47 G8IVk 654 0
67 NAME Local Bubble ISM ~ ~           ~ 788 0

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2022.07.06-08:48:10

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