1995A&A...293...64T

Query : 1995A&A...293...64T

1995A&A...293...64T - Astronomy and Astrophysics, volume 293, 64-68 (1995/1-1)

Far-infrared observations of chromospherically active stars in stellar clusters.

TSIKOUDI V. and BROMAGE G.E.

Abstract (from CDS):

Using the IRAS database we have searched for far-infrared emission from a large number of chromospherically active dwarf stars (including flare stars) in stellar clusters of different ages and distances. Only stars in the nearest clusters (<50pc) were detected by IRAS. Their 12µm luminosity (L12) is in the range 0.2-5x1031erg/s. We find that the detected emission is photospheric in origin and that there is no correlation of flux either with age or with stellar-activity levels. The cluster stars' far-infrared radiation characteristics are very similar to those of solar-vicinity field stars of similar spectral type and chromospheric activity.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: chromospheres - infrared: stars - open clusters and associations

Nomenclature: IRAS CHHMMm+DDMM N=9

Simbad objects: 26

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Number of rows : 26
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 HD 23261 SB* 03 43 54.3415055736 +03 26 46.856371488   9.89 8.97     K1/2V 41 0
2 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3434 0
3 V* V988 Tau BY* 04 23 22.8504016872 +19 39 31.317351336   10.290 9.381     K0 123 0
4 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
5 V* V996 Tau BY* 04 32 50.1196981848 +16 00 20.931733080   9.85 8.900 9.02   K0V 111 0
6 HD 285931 SB* 04 33 58.5330004032 +15 09 49.227669684   9.311 8.495 8.79   G5 131 0
7 HD 29159 PM* 04 36 05.2673529024 +15 41 02.415425424   10.212 9.345 8.878 8.459 K0 122 0
8 V* AK Lep BY* 05 44 26.5367235521 -22 25 18.614500501   7.09 6.15     K3 165 0
9 * gam Lep PM* 05 44 27.7906169580 -22 26 54.187756254 4.08 4.07 3.60 3.15 2.89 F6V 428 0
10 NGC 2264 OpC 06 40 52.1 +09 52 37           ~ 1793 0
11 * 9 Pup SB* 07 51 46.30295 -13 53 52.9169           G0V 243 0
12 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1564 0
13 * 34 Leo ** 10 11 38.2115197 +13 21 18.407128   6.891 6.427     F6V 115 0
14 * 37 UMa PM* 10 35 09.6937360824 +57 04 57.487315116   5.481 5.148     F1V 182 1
15 * alf Crv PM* 12 08 24.8172764085 -24 43 43.952148016   4.33 4.01     F1V 180 0
16 Cl Melotte 111 OpC 12 24 03.4 +25 39 07           ~ 480 0
17 V* NO UMa RS* 12 31 18.9376512624 +55 07 08.278288104   9.04 8.10     K2Ve 134 0
18 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 439 2
19 HD 110463 BY* 12 41 44.5223098128 +55 43 28.822255644   9.250 8.265     K3Ve 114 0
20 IRAS F12394+5559 IR 12 41 46.0 +55 43 14           ~ 1 0
21 HD 111456 ** 12 48 39.4470003426 +60 19 11.037876361   6.299 5.831     F6V 202 1
22 * 78 UMa ** 13 00 43.69949 +56 21 58.8102   5.29 4.93     F2V 274 0
23 HD 115043 PM* 13 13 37.0081725552 +56 42 29.759356008   7.423 6.813     G1Va 255 0
24 * g UMa ** 13 25 13.5378333 +54 59 16.654781 4.260 4.180 4.010 3.85 3.78 A5V+M3-4V 305 0
25 HD 124752 ** 14 12 27.04957 +67 35 10.1661           K0-V+M2V 59 0
26 * 18 Boo PM* 14 19 16.2797193624 +13 00 15.483901068   5.788 5.396     F5IV 166 0

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