2002A&A...391.1039K

Query : 2002A&A...391.1039K

2002A&A...391.1039K - Astronomy and Astrophysics, volume 3911039-1052 (2002/9-1)

The determination of Teff for metal-poor A-type stars using V and 2MASS J, H and K magnitudes.

KINMAN T. and CASTELLI F.

Abstract (from CDS):

Effective temperatures (Teff) can be determined from (V-J)0, (V-H)0 and (V-K)0 colours that are derived from 2MASS magnitudes. This gives another way to estimate the Teff of faint blue halo stars (V≲15) whose temperatures are now usually deduced from (B-V)0. Transformations (adapted from Carpenter, 2001AJ....121.2851C) are used to change colours derived from the 2MASS data to the Johnson system. Teff is then derived from these colours using an updated Kurucz model. Tables are given to derive Teff as a function of (V-J)0, (V-H)0 and (V-K)0 for a variety of metallicities and logg suitable for blue horizontal branch and main sequence stars. The temperatures obtained in this way are compared with those in the recent literature for various stars with 5≤V≤15 and Teff in the range 6500 to 9500K; systematic differences are ∼100 K. An exception is the sample of BHB stars observed by Wilhelm et al. (1999AJ....117.2329W) whose Teff are significantly cooler than those we derive by an amount that increases with increasing temperature.

Abstract Copyright: ∼

Journal keyword(s): stars: fundamental parameters (temperatures) - stars: horizontal-branch

VizieR on-line data: <Available at CDS (J/A+A/391/1039): table2.dat table3.dat>

CDS comments: Table 13 : objects R-NNN = Cl* NGC 6205 Arp R-NNN, J NN = Cl* NGC 6205 AJ NN, SA NNN = Cl* NGC 6205 SAV ANNN.

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 - 2026 		#notes
1 Ton S 162 V* 00 31 25.7501220360 -23 57 26.802557280   14.36 14.14     A 12 0
2 HD 2857 HB* 00 31 53.7908406120 -05 15 42.870486708 10.52 10.17 9.98     A2IV 116 0
3 HD 3268 PM* 00 35 54.8017196664 +13 12 25.451468496   6.93   6.0   F7V 104 0
4 CD-24 266 BS* 00 40 47.9313619824 -24 07 34.183333668   12.955 12.656 12.441 12.216 CEMP-s 100 0
5 HD 14829 PM* 02 23 09.2476174920 -10 40 39.279956448 10.37 10.31 10.29     sdA0IVHe0 62 0
6 HD 19445 Pe* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 801 0
7 HD 24098 PM* 03 50 16.1644952280 -01 31 21.268135380   6.902 6.491 7.56   F5V 43 0
8 HD 26345 PM* 04 10 42.3629157312 +18 25 23.714993208   7.005 6.576 6.329 6.095 F6V 168 0
9 HD 26737 PM* 04 14 30.4159876488 +22 27 06.649100604   7.494 7.045     F5V 110 0
10 HD 27524 PM* 04 21 31.6490057568 +21 02 23.557097868   7.215 6.779 6.531 6.283 F5V 195 0
11 HD 27534 PM* 04 21 32.2684884072 +18 25 03.295609536   7.234 6.787 6.532 6.279 F5V 184 0
12 HD 27731 PM* 04 23 30.4004677416 +24 24 19.469650140   7.625 7.159 6.905 6.643 F6V 132 0
13 HD 28406 PM* 04 29 30.3506853024 +17 51 47.393997696 7.36 7.352 6.890 6.631 6.373 F6V 214 0
14 HD 28911 PM* 04 33 46.6420844064 +13 15 06.784086276   7.031 6.597 6.351 6.108 F6V 147 0
15 HD 29225 PM* 04 36 40.7173312344 +15 52 09.678087120   7.074 6.619 6.371 6.115 F6V 156 0
16 * 101 Tau PM* 04 59 44.3220286320 +15 55 00.236683308   7.220 6.747     F5V 155 0
17 HD 33400 SB* 05 10 47.5330285800 +20 34 09.027041880 8.250 8.250 7.850     F0 47 0
18 HD 40832 PM* 06 02 55.1727334152 +32 38 08.507027940   6.66   5.9   F4V 59 0
19 HD 252940 HB* 06 11 37.2505420824 +26 27 30.113583840   9.31 9.03     ~ 30 0
20 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1610 0
21 HD 60778 HB* 07 36 11.7736405176 -00 08 15.571268556 9.34 9.20 9.10     A0III/IV 117 0
22 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
23 HD 74721 HB* 08 45 59.2614567408 +13 15 48.591616392 8.88 8.75 8.72     A0V 166 0
24 HD 86986 HB* 10 02 29.5667305272 +14 33 25.186874796 8.27 8.11   7.9   A1V 188 0
25 HD 87047 HB* 10 03 12.7491822360 +31 03 19.068708168   9.85 9.74     A0 26 0
26 BPS BS 15621-0043 HB* 10 09 26.2729434912 +24 50 02.789046924   14.46 14.41     A0 7 0
27 TYC 1968-663-1 * 10 11 25.5316241088 +22 59 08.101572396   12.49 12.26     ~ 5 0
28 BPS BS 15621-0040 * 10 12 31.3390060272 +27 17 34.077836544   14.01 13.81     ~ 6 0
29 SDSS J101350.16+251822.3 * 10 13 50.1700018200 +25 18 22.470399900   13.66 13.60     ~ 8 0
30 ATO J154.0183+24.7370 PM* 10 16 04.5060095928 +24 44 14.329734432   11.96 11.46     ~ 9 0
31 TYC 1969-1002-1 * 10 17 04.7623403952 +24 15 49.691217060   12.09 12.18     ~ 3 0
32 TYC 1972-1159-1 * 10 17 16.9405241304 +25 50 13.628703804   12.38 12.57     ~ 4 0
33 BPS BS 15621-0032 * 10 19 15.7715743152 +26 27 26.126755704   14.90 14.86     ~ 7 0
34 CRTS J101938.7+262306 RR* 10 19 38.7528864816 +26 23 05.733452904   14.91 14.38     ~ 14 0
35 BPS BS 15621-0025 * 10 21 17.4172799736 +23 51 42.303090168   15.14 15.18 15.26   ~ 4 0
36 BPS BS 15621-0022 * 10 21 53.3226913824 +23 50 55.875593508   13.15 12.85     kA3hA5mA7 5 0
37 TYC 1970-567-1 * 10 26 19.1639454864 +23 30 31.094494200   12.56 11.82     ~ 8 0
38 ATO J156.8209+25.3695 EB* 10 27 17.0173997688 +25 22 10.630546068   12.37 12.33     ~ 7 0
39 BPS BS 15621-0009 * 10 28 01.1076884208 +27 32 32.832422340   14.21 13.93     kA3hA5mA7 8 0
40 TYC 1973-1057-1 * 10 29 10.9498437288 +25 58 53.130675720   11.99 12.36     kA1hA2mA3 7 0
41 HD 96574 PM* 11 07 36.1996720492 +13 51 31.751282766   7.87   7.0   F9V 74 0
42 * bet Leo dS* 11 49 03.57834 +14 34 19.4090 2.30 2.22 2.13 2.08 2.06 A3Va 605 1
43 * 9 Com PM* 12 19 29.5258397040 +28 09 24.904524312   6.83   6.1   F8Va 215 0
44 BD+42 2309 * 12 28 22.1632181880 +41 38 52.416055320   10.80 10.82     A0 51 0
45 HD 109995 HB* 12 38 47.5985869392 +39 18 31.626312732 7.83 7.68   7.6   A0V 237 0
46 BD+25 2602 HB* 13 09 25.5879361200 +24 19 25.102149672   10.14 10.04     A0 46 0
47 V* KT Lib SX* 14 39 19.9963857744 -20 50 31.715405520   12.98 12.72     ~ 12 0
48 HD 130095 PM* 14 46 51.2128847304 -27 14 53.963045736 8.28 8.20 8.12     B9V 103 0
49 HD 139798 PM* 15 38 16.2430975752 +46 47 51.978816816   6.089 5.742     F2V 105 0
50 NGC 6205 6 * 16 41 09.9360699984 +36 30 10.392889356   15.17 15.00     ~ 20 0
51 NGC 6205 17 * 16 41 15.2634792840 +36 23 16.196099100   15.18 15.09     ~ 14 0
52 NGC 6205 50 * 16 41 21.0192145944 +36 27 58.169091528   15.04 14.99     ~ 8 0
53 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
54 2MASS J16415196+3624337 RG* 16 41 51.9531609840 +36 24 33.699251556   15.20 15.07     ~ 13 0
55 NGC 6205 1055 * 16 41 57.4050976128 +36 28 31.805185188   15.26 15.08     ~ 6 0
56 Cl* NGC 6205 KAD 655 HB* 16 42 14.6337926736 +36 27 45.811632744   15.20 15.14     ~ 10 0
57 HD 151044 PM* 16 42 27.8123142480 +49 56 11.181141888       6.2   F8V 141 0
58 HD 167105 HB* 18 11 06.3095613216 +50 47 32.413621164 9.020 8.970 8.950     A0 48 0
59 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 221 1
60 HD 171620 PM* 18 34 30.6937288128 +34 24 56.298656232   8.06   7.2   F6p 85 0
61 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
62 * 3 Cyg ** 19 25 25.7579593032 +24 54 45.990132161   6.70   5.9   F8 104 0
63 HD 191096 PM* 20 05 21.4927152288 +56 20 29.108659416 6.600 6.590 6.180     F4V 60 0
64 V* AW Mic RR* 21 19 05.9161670520 -33 55 07.921872120   9.29 9.05     A0(III)w 52 0
65 * alf PsA PM* 22 57 39.04625 -29 37 20.0533 1.31 1.25 1.16 1.11 1.09 A4V 1303 3
66 V* BX Scl SX* 23 43 54.4551676392 -28 18 34.627551660   13.82 13.56     A 43 0
67 V* BY Scl SX* 23 51 32.2401548712 -25 45 46.662051420   14.05 13.85     A0 20 0

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