2000A&A...357..681H


Query : 2000A&A...357..681H

2000A&A...357..681H - Astronomy and Astrophysics, volume 357, 681-685 (2000/5-2)

The distance to the nearest star-forming clouds: MBM 12 and MBM 20.

HEARTY T., FERNANDEZ M., ALCALA J.M., COVINO E. and NEUHAEUSER R.

Abstract (from CDS):

We present high-resolution spectra (R∼49,000) of stars that have parallax measurements from the Hipparcos satellite and are projected along the line of sight to the two nearest known star forming clouds to the Sun: MBM 12 and MBM 20. The spectra were obtained with the FOCES Echelle Spectrograph at the 2.2 meter telescope in Calar Alto, Spain and the wavelength range was chosen to include the interstellar NaI D lines at λ5889.950Å and λ5895.924Å. Since the stars are at a range of distances, we use their spectra along with their parallaxes from Hipparcos to determine the distance to the molecular gas. The stars in front of the cloud do not show interstellar NaI D absorption features while the stars behind the cloud do show interstellar absorption features. We find that both clouds are somewhat more distant than previously estimated. The revised distance to MBM12 is 58±5pc<d<90±12pc and the distance to MBM 20 is 112±15 pc<d<161±21pc.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: clouds - ISM: individual objects: MBM 12 - ISM: individual objects: MBM 20

Simbad objects: 45

goto View the references in ADS

Number of rows : 45
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 17332 ** 02 47 27.42146 +19 22 18.5443   7.55 6.87     G1V+G5V 96 0
2 BD+22 396 PM* 02 48 37.4276707386 +22 35 54.368718096   10.68   9.9   G4 38 0
3 HD 17659 PM* 02 50 42.6075376080 +19 09 37.717969644       6.3   F8 35 0
4 [DB2002b] G157.98-35.06 MoC 02 51 07.7 +19 32 20           ~ 17 0
5 BD+21 386 PM* 02 52 57.5792560704 +22 34 09.449172408       10.0   ~ 10 0
6 * rho01 Ari * 02 54 55.2047449800 +17 44 05.080846776 7.310 7.280 7.000     A3 32 0
7 HD 18106 PM* 02 55 04.8945005784 +21 35 42.540931500       8.3   F8 19 0
8 HD 18090 * 02 55 05.0979571056 +20 48 00.809005824   9.26 8.82     F2 13 0
9 BD+18 375 PM* 02 55 32.3030562792 +18 46 25.669528351       9.3   K0 36 0
10 HD 18190 ** 02 55 49.4782087365 +19 09 12.784673093   9.41 9.04     F 19 0
11 LDN 1457 DNe 02 55.9 +19 35           ~ 84 1
12 LDN 1453 DNe 02 56.0 +20 17           ~ 25 0
13 [DC82] 48 * 02 56 00.4 +19 40 44     18.7     G9 1 0
14 V* XY Ari CV* 02 56 08.185 +19 26 34.12           ~ 146 1
15 * rho Ari PM* 02 56 26.1717266513 +18 01 23.665188613   6.02 5.58 5.3   F6V 152 0
16 HD 18283 * 02 56 46.0640423520 +21 25 41.156335560   9.12 8.78     A5 24 0
17 LDN 1454 DNe 02 56.8 +20 12           ~ 26 0
18 MBM 12 MoC 02 56 50 +19 32.0           ~ 217 1
19 LDN 1458 DNe 02 57.8 +20 12           ~ 24 1
20 * 47 Ari PM* 02 58 05.2213070040 +20 40 07.442238720   6.230   5.6   F0V(e) 178 0
21 BD+18 382 ** 02 58 23.7705662712 +19 13 45.433792236   9.39 8.79     G0III 23 0
22 HD 18484 ** 02 58 53.07176 +21 37 03.8426           A3 93 0
23 HD 18508 PM* 02 59 10.3970263656 +19 59 23.423080128 7.720 7.710 7.350     F0 44 0
24 * eps Ari B * 02 59 12.678278 +21 20 24.26202   5.61 5.57     A3IVs 77 0
25 * eps Ari ** 02 59 12.72536 +21 20 25.5575 4.75 4.67 4.63 4.58 4.56 A2IV+A3IVs 42 0
26 * eps Ari A * 02 59 12.7258032120 +21 20 25.538577396   5.21 5.16     A2IV 72 0
27 [DB2002b] G161.59-35.89 MoC 02 59.4 +17 12           ~ 12 0
28 * 50 Ari ** 03 00 31.5051140088 +18 00 17.928599148   6.82 6.80     A0 29 0
29 HD 18783 PM* 03 01 50.5915918296 +16 31 04.930239864       8.0   F5 15 0
30 BD+17 477 ** 03 02 15.57735 +18 19 45.0341   10.27 9.70 9.55   G5 20 0
31 HD 18831 PM* 03 02 27.4081821480 +22 22 24.609046476   8.42 7.93     F5 30 0
32 MCC 411 * 03 03 13.6992602184 +22 22 11.395526016   12.2 10.7     M0 18 0
33 * 228 Eri Be* 04 29 06.9254098152 -13 02 54.127769208 4.45 5.23 5.41 5.46 5.63 B2(V)ne 271 0
34 HD 28763 * 04 31 25.8505846032 -13 38 39.202938816   6.321 6.250     A2/3V 45 0
35 HD 28856 * 04 32 17.7545423832 -13 35 11.480811504   9.46 9.27     A1V 19 0
36 IRAS 04325-1419 Y*O 04 34 49.75392 -14 13 08.6016           ~ 30 0
37 LDN 1642 MoC 04 35 18 -14 13.9           ~ 144 0
38 HD 29368 ** 04 36 53.92124 -14 55 32.5174           G2V 17 1
39 HD 29394 * 04 37 08.2900537488 -14 07 03.436296096 9.33 9.37 8.95     F5V 25 0
40 HD 29482 * 04 37 59.7665906952 -13 01 44.089165200 7.42 7.36 7.32     A0IVkB9 30 0
41 * l Eri ** 04 38 10.8240964091 -14 18 14.483465432 5.99 4.96 3.87 3.03 2.47 K2-IIIb 131 0
42 HD 29573 ** 04 38 53.5501496352 -12 07 23.068127568   5.065 5.002     A0V 88 0
43 BD-15 830 PM* 04 39 05.3260560816 -15 12 58.958552052   10.01 9.34     G5 14 0
44 BD-11 929 * 04 39 33.5390385648 -11 04 27.057571788   10.96 9.74     K5 2 0
45 HD 29851 * 04 41 42.0315143376 -12 28 32.816965332   6.76 6.64     A2IV-V 22 0

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2022.05.23-10:40:24

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