2000ApJ...535..965L

Query : 2000ApJ...535..965L

2000ApJ...535..965L - Astrophys. J., 535, 965-974 (2000/June-1)

Spectral energy distributions for disk and halo M dwarfs.

LEGGETT S.K., ALLARD F., DAHN C., HAUSCHILDT P.H., KERR T.H. and RAYNER J.

Abstract (from CDS):

We have obtained infrared (1-2.5 µm) spectroscopy for 42 halo and disk dwarfs with spectral types M1-M6.5. These data are compared to synthetic spectra generated by the latest model atmospheres of Allard & Hauschildt. Photospheric parameters metallicity, effective temperature, and radius are determined for the sample.We find good agreement between observation and theory except for known problems due to incomplete molecular data for metal hydrides and H2O. The metal-poor M subdwarfs are well matched by the models, as oxide opacity sources are less important in this case. The derived effective temperatures for the sample range from 3600 to 2600 K; at these temperatures grain formation and extinction are not significant in the photosphere. The derived metallicities range from solar to 1/10 solar. The radii and effective temperatures derived agree well with recent models of low-mass stars. The spectra are available in electronic form upon request.

Abstract Copyright: ∼

Journal keyword(s): Infrared: Stars - Stars: Atmospheres - Stars: Late-Type - Stars: Low-Mass, Brown Dwarfs

Simbad objects: 41

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Number of rows : 41
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 G 158-27 PM* 00 06 43.1973190107 -07 32 17.019101068     13.837 13.605 10.15 M5.5V 257 0
2 HD 1326B PM* 00 18 25.8251408611 +44 01 38.092431857   12.84 11.04 10.3   M3.5V 317 0
3 LP 406-47 LM* 01 00 24.6980442392 +17 11 27.730221892   19.1   16.2   esdM3 21 0
4 Wolf 47 PM* 01 03 19.8350070578 +62 21 55.837228636   15.34 13.21 12.4   M5V 232 0
5 G 69-47 SB* 01 05 37.6425066824 +28 29 33.572409149   16.69   13.7   M5V 74 0
6 G 76-62 PM* 03 09 00.1673675770 +10 01 25.650761248   16.57 14.86 14.677   M5V 54 0
7 LP 417-42 LM* 05 10 39.0753733822 +19 24 07.020164855   19.9   17.4   esdM6 38 0
8 LP 545-45 LM* 08 43 58.4562364477 +06 00 39.410772766   19.7 18.49 17.1   esdM5.5 27 0
9 LP 731-58 PM* 10 48 12.6142508200 -11 20 09.610693470     15.784 16.01 11.25 M6.5V 198 0
10 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
11 BD+44 2051 PM* 11 05 28.5769490063 +43 31 36.386948721 11.440 10.270   7.9   M1.0V 368 0
12 BD+44 2051B PM* 11 05 30.8855820790 +43 31 17.885197587   16.45 14.45 13.4   M6.0V 279 0
13 LP 130-226 LM* 12 29 14.1557897744 +53 33 06.121451284   19.0   16.7   M6V 38 0
14 LP 857-48 LM* 14 31 38.2541364240 -25 25 32.848624058   16.8 15.68     esdM4 32 0
15 BD-11 3759 BY* 14 34 16.8116623459 -12 31 10.414495538 14.041 12.915 11.317 10.093 8.473 M3.5V 221 0
16 LP 440-52 LM* 14 39 00.3086540071 +18 39 38.710151529   19.6 18.39 17.3 14.64 sdM7 68 0
17 HD 131976 ** 14 57 26.53330 -21 24 41.5778 10.759 9.559 8.065 7.075 9.02 M1.5V 265 1
18 LP 502-32 LM* 15 20 29.4624631088 +14 34 39.211197621   21.1   18.5   esdM5.0 22 0
19 Ross 513B PM* 15 35 20.3303100438 +17 43 04.419693584       14.84   M4.5V 50 0
20 Ross 513 PM* 15 35 20.5212300654 +17 42 46.882017401   13.98   12.055   M2.5V 69 1
21 L 768-119 SB* 15 42 06.5402655256 -19 28 18.312134612 14.559 13.46 11.855 10.738 9.305 dM4.5 94 0
22 V* CM Dra BY* 16 34 20.3302660573 +57 09 44.368918696   14.50 12.87 10.85 9.26 M4.5V 467 0
23 G 138-59 LM* 16 42 04.3316456505 +10 25 58.785394380   16.74   14.4   sdM2.0 23 0
24 Wolf 629 PM* 16 55 25.2222453644 -08 19 21.296969167 14.691 13.436 11.759 10.574 9.044 M3.5V 243 0
25 HD 156384C PM* 17 18 58.8272997802 -34 59 48.612673382 12.96 11.79 10.22 10.05 8.82 M1.5V 249 1
26 G 181-42 PM* 17 23 52.3795826759 +33 00 07.310568980   14.6   13.248   M3V 20 0
27 LP 102-320 PM* 17 55 33.4226960149 +58 24 27.503724718   19.0 17.98 16.6 14.02 M5.5V 39 0
28 NAME Barnard's star BY* 17 57 48.4984700685 +04 41 36.113879676 12.497 11.24 9.511 8.298 6.741 M4V 907 2
29 LP 181-51 PM* 18 29 07.8085460932 +50 32 59.016094585   20.1   17.3   sdM5 18 0
30 HD 173739 PM* 18 42 46.7043860406 +59 37 49.409446059   10.43 8.93     M3V 427 1
31 HD 173740 PM* 18 42 46.8946714770 +59 37 36.721161413   11.32 9.78     M3.5V 381 1
32 LP 141-1 LM* 18 45 52.2450125367 +52 27 40.624600956   16.72 14.96 14.67   d/sdM4 48 0
33 G 208-44 Er* 19 53 54.4821159649 +44 24 51.341564299   15.31 13.126 13.083 9.78 M5.5Ve 220 1
34 G 208-45 LM* 19 53 55.1405033909 +44 24 54.147256052   15.97 13.99 14.3 10.27 M6V 205 0
35 G 125-55 PM* 20 03 26.5810806615 +29 51 59.529213703       14.09 11.24 M4.5V 91 0
36 Wolf 1130 PM* 20 05 02.1950576493 +54 26 03.234326252   11.970 13.883     sdM1 153 0
37 Wolf 896 PM* 20 56 46.5969248424 -10 26 54.747253252 14.112 12.999 11.487 10.428 9.106 dM2.5 116 0
38 LP 757-13 LM* 21 07 34.1477901866 -13 26 55.912672323   18.4 17.41     esdM1.5 15 0
39 Wolf 918 PM* 21 09 17.4271514815 -13 18 09.013127841 13.501 12.362 10.869 9.891 8.805 M1V 151 0
40 LP 760-3 LM* 22 28 54.3488414218 -13 25 19.457590378   19.3 17.14     M6.5V 82 0
41 Ross 248 BY* 23 41 55.0363002516 +44 10 38.818911116   14.19   11.1   M5.0V 361 0

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