2013A&A...550A..35P


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.06CET01:17:10

2013A&A...550A..35P - Astronomy and Astrophysics, volume 550A, 35-35 (2013/2-1)

Dust properties in the Galactic bulge.

POTTASCH S.R. and BERNARD-SALAS J.

Abstract (from CDS):

It has been suggested that the ratio of total-to-selective extinction RV in dust in the interstellar medium differs in the Galactic bulge from its value in the local neighborhood. We attempt to test this suggestion. The mid-infrared hydrogen lines in 16 Galactic bulge PNe measured by the Spitzer Space Telescope are used to determine the extinction corrected Hβ flux. This is compared to the observed Hβ flux to obtain the total extinction at Hβ. The selective extinction is obtained from the observed Balmer decrement in these nebulae. The value of RV can then be found. The ratio of total-to-selective extinction in the Galactic bulge is consistent with the value RV=3.1, which is the same as has been found in the local neighborhood. The suggestion that RV is different in the Galactic bulge is incorrect. The reasons for this are discussed.

Abstract Copyright:

Journal keyword(s): dust, extinction - planetary nebulae: general - infrared: ISM - radio continuum: ISM

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 PN M 2-5 PN 17 02 19.089 -33 10 04.97   16.28 15.08   14.44 ~ 65 0
2 PN M 2-10 PN 17 14 07.03 -31 19 42.9     15.00     ~ 78 0
3 PN H 1-15 PN 17 28 37.6287267935 -24 51 07.216657849     15.10     ~ 56 0
4 PN H 2-11 PN 17 29 25.9610992701 -25 49 07.209126602           ~ 58 0
5 PN H 1-20 PN 17 30 43.82 -28 04 06.8   17.1 16.0     ~ 80 0
6 PN M 4-5 PN 17 34 54.72 -26 35 57.3     17.50     ~ 65 0
7 PN SaSt 2-15 PN 17 38 57.3716181503 -18 17 35.779247942   13.93 13.66 13.82   ~ 68 0
8 WRAY 17-94 PN 17 40 12.84 -26 44 21.9     16.00     ~ 54 1
9 PN H 2-20 PN 17 45 39.81 -25 40 00.3     17.00     ~ 69 1
10 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11075 0
11 PN M 1-27 WR? 17 46 45.4756208895 -33 08 35.133141922     13.90     [WC11]? 95 0
12 PN M 3-44 PN 17 51 18.9231333773 -30 23 53.176361589     16.50     [WC11] 76 0
13 PN H 1-43 PN 17 58 14.4397467261 -33 47 37.625196722     15.10     [WC11] 72 0
14 PN M 1-37 PN 18 05 25.81 -28 22 04.3     14.70     [WC11]? 116 0
15 PN M 1-38 PN 18 06 05.74 -28 40 30.0     13.90     ~ 94 0
16 PN M 2-31 PN 18 13 16.0573157107 -25 30 05.262267071   13.3 13.60     [WC4/6] 90 0
17 PN H 1-62 PN 18 13 17.9554567527 -32 19 42.965989466   12 14.00     WC10-11 49 0
18 NGC 7027 PN 21 07 01.8 +42 14 10   9.1 10.9     ~ 2304 1
19 NAME Galactic Bulge reg ~ ~           ~ 3255 0

    Equat.    Gal    SGal    Ecl

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2019.12.06-01:17:10

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