1995A&A...302..364S

Query : 1995A&A...302..364S

1995A&A...302..364S - Astronomy and Astrophysics, volume 302364-381 (1995/10-2)

Distance and metallicity limits of high-velocity clouds.

SCHWARZ U.J., WAKKER B.P. and VAN WOERDEN H.

Abstract (from CDS):

This paper presents results of a program to derive distances of high-velocity clouds (HVCs) through measurement of absorption in the CaIIH and K lines. The problems of the method and their solutions are discussed in detail. A probable detection of absorption toward the Seyfert galaxy Mark106 is reported, which gives a Ca+ abundance of (17±6)x10–9 in HVC complex A. The non-detection of CaII absorption against a stellar probe sets a tentative lower limit of 1.6kpc to the distance of complex A. Non-detections of HVC CaII lines in 9 stars projected on complexes M, C and H may give distance limits, if the Ca+/HI ratio in those HVCs can be derived from absorptions against extra-galactic probes. High-resolution HI observations are required to get reliable Ca+ abundances. Westerbork HI synthesis observations are reported for several directions together with profiles obtained at the Effelsberg 100-meter dish. From results on several HVCs, we conclude that the Ca+/HI ratio may vary strongly between different HVC complexes.

Abstract Copyright: ∼

Journal keyword(s): ISM: abundances - ISM: clouds - ISM: kinematics - Galaxy: halo - radio lines: interstellar - ISM: atoms

Simbad objects: 37

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Number of rows : 37
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 ESO 113-45 Sy1 01 23 45.7631533440 -58 48 20.808928944   14.08 13.83 13.34   ~ 965 0
2 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
3 PG 0832+676 HS* 08 37 34.7329769280 +67 24 13.597330788   13.87 14.12 14.47   sdOA 54 1
4 HVC 237+17+105 HVC 08 38 -12.           ~ 5 0
5 3C 206 Sy1 08 39 50.5829445936 -12 14 34.327188564   15.78 15.76     ~ 254 1
6 Z 264-57 GiG 09 04 33.5368637784 +51 36 50.966063640   13.6       ~ 51 0
7 Mrk 106 Sy2 09 19 55.3494938448 +55 21 37.128065832   16.34 16.15     ~ 133 0
8 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
9 HD 93521 * 10 48 23.5113981120 +37 34 13.083332412 5.67 6.79 7.03     O9.5IIInn 443 1
10 BD+38 2182 * 10 49 12.9127247352 +38 00 14.849836668   10.95 11.2     B3V 58 0
11 QSO J1115+4249 QSO 11 15 06.0152071752 +42 49 48.845332884   17.77 17.59     ~ 57 0
12 V* BR UMa RR* 11 24 04.2571691304 +42 56 50.322247008   13.8 14.27 13.7   ~ 8 0
13 PG 1126+469 HB* 11 29 28.6663597104 +46 35 31.728918444 13.752 14.49 14.53 14.647 14.721 B 8 0
14 HVC 287+22+240 HVC 11 36 -39.0           ~ 7 0
15 NGC 3783 Sy1 11 39 01.7096819040 -37 44 19.009642992   12.46 13.43 11.33 12.1 ~ 1765 1
16 Mrk 205 BLL 12 21 44.0724099888 +75 18 38.241006228   15.64 15.24 14.7   ~ 492 0
17 SN 1991T SN* 12 34 10.20 +02 39 56.4   11.70 11.51     SNIapec 795 1
18 LB 2522 Sy1 13 01 12.9250750776 +59 02 06.693816732   16.04 15.89     ~ 298 0
19 SN 1991J SN* 13 12 37.6 +12 35 03     17     SNII 16 1
20 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
21 SN 1986G SN* 13 25 36.46 -43 01 53.6   12.45 11.44     SNIapec 422 1
22 SN 1983N SN* 13 36 51.23 -29 54 01.7   11.7       SNIb 278 1
23 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2778 2
24 Feige 87 HS* 13 40 14.6950103088 +60 52 47.566392996   11.56 11.71     sdB+G4V 49 0
25 2XMM J135315.8+634546 Sy1 13 53 15.8311116864 +63 45 45.683126676   14.54 14.28     ~ 404 1
26 HD 121800 * 13 55 15.4510231656 +66 07 00.645739068 8.19 8.92 9.01     B5V 63 0
27 V* BT Dra RR* 14 51 44.6425410768 +60 04 09.038718840   11.76 11.49     kA8hF6 73 0
28 PG 1510+635 HS* 15 11 10.4376197328 +63 21 48.234938976   13.96 13.91 14.12   sdB8IVHe0 10 0
29 HD 135785 * 15 19 41.4559201848 -58 44 02.442512580   11.04 10.90     A0 5 0
30 8C 1704+608 Bla 17 04 41.3742408840 +60 44 30.520617000   15.65 15.40 15.30   ~ 782 1
31 V* V421 Her RR* 17 32 05.5615754208 +39 45 32.195114712     14.00     kA2.5hF0.5 27 0
32 PG 1743+477 HS* 17 44 26.3960708352 +47 41 46.918908168   13.68 13.79 13.99   sdB2VIIHe7 35 0
33 V* OW Her RR* 18 03 00.8637813168 +36 28 45.580858248   13.60 13.96     ~ 20 0
34 ClG 1821+64 ClG 18 21 56.7276 +64 20 55.841           ~ 511 1
35 7C 1821+6419 Sy1 18 21 57.2130271440 +64 20 36.221312076   14.23 14.24     ~ 632 1
36 V* RS Cas cC* 23 37 16.0608732192 +62 25 44.372375688   11.4 10.06   8.233 F7-G1Ib 122 0
37 V* IU Cas RR* 23 44 39.2470551744 +52 20 41.120289132           ~ 21 0

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