2013ApJ...775...85N

Query : 2013ApJ...775...85N

2013ApJ...775...85N - Astrophys. J., 775, 85 (2013/October-1)

A survey of H2O, CO2, and CO ice features toward background stars and low-mass young stellar objects using AKARI.

NOBLE J.A., FRASER H.J., AIKAWA Y., PONTOPPIDAN K.M. and SAKON I.

Abstract (from CDS):

We present near-infrared spectroscopic observations of 19 molecular clouds made using the AKARI satellite, and the data reduction pipeline written to analyze those observations. The 2.5-5 µm spectra of 30 objects–22 field stars behind quiescent molecular clouds and 8 low-mass young stellar objects in cores–were successfully extracted using the pipeline. Those spectra are further analyzed to calculate the column densities of key solid phase molecular species, including H2O, CO2, CO, and OCN–. The profile of the H2 O ice band is seen to vary across the objects observed and we suggest that the extended red wing may be an evolutionary indicator of both dust and ice mantle properties. The observation of 22 spectra with fluxes as low as < 5 mJy toward background stars, including 15 where the column densities of H2O, CO, and CO2 were calculated, provides valuable data that could help to benchmark the initial conditions in star-forming regions prior to the onset of star formation.

Abstract Copyright: ∼

Journal keyword(s): astrochemistry - infrared: stars - ISM: abundances - ISM: clouds - ISM: molecules - stars: formation

Nomenclature: Tables 2-3, Fig. 1: [NFA2013] NN (Nos 1-30).

Simbad objects: 59

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Number of rows : 59
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 2MASS J04312835+1807427 * 04 31 28.355 +18 07 42.80           ~ 1 0
2 LDN 1551 DNe 04 31 30.0 +18 12 30           ~ 823 1
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 HOPS 68 Y*O 05 35 24.2999 -05 08 30.686           ~ 67 0
6 [NFA2013] 2 Y*O 05 44 29.3 +09 08 57           ~ 4 0
7 NAME [BM89] B35A PoC 05 44 29.7 +09 08 54           ~ 4 0
8 2MASS J05443000+0908573 Y*O 05 44 30.007 +09 08 57.31           ~ 4 0
9 2MASS J05443085+0908260 Y*O 05 44 30.858 +09 08 26.05           ~ 3 0
10 2MASS J05443164+0908578 Y*O 05 44 31.648 +09 08 57.90           ~ 3 0
11 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
12 [DB2002b] G269.42+3.01 MoC 09 22 19 -45 48.9           ~ 14 0
13 BHR 53 MoC 09 28 47 -51 36.7           ~ 16 0
14 [NFA2013] 6 * 09 28 48.407 -51 36 37.91           ~ 2 0
15 2MASS J09285020-5136373 Y*O 09 28 50.1947864904 -51 36 37.383839496           ~ 3 0
16 2MASS J09285128-5136588 Y*O 09 28 51.2798318808 -51 36 58.951181232           ~ 3 0
17 [NFA2013] 9 * 09 46 46.3391521320 -51 05 42.441486504           ~ 1 0
18 BHR 55 MoC 09 46 51 -51 06.4           ~ 16 0
19 [NFA2013] 10 * 10 59 52.1090715144 -63 43 00.085755792           ~ 1 0
20 [DB2002b] G290.96-3.48 DNe 10 59 55 -63 44.3           ~ 7 0
21 [NFA2013] 11 * 10 59 55.4816218872 -63 43 21.044027244           ~ 1 0
22 [NFA2013] 12 * 11 07 06.230 -62 06 05.76           ~ 2 0
23 [DB2002b] G291.05-1.65 MoC 11 07 07 -62 05.8           ~ 17 0
24 [NFA2013] 14 * 11 07 10.340 -62 05 34.57           ~ 2 0
25 [NFA2013] 13 * 11 07 10.416 -62 06 01.31           ~ 2 0
26 TGU H1861 MoC 12 24 13 -66 10.7           ~ 12 0
27 [LM99] 111 cor 12 29 36.6 -71 10 39           ~ 6 0
28 [NFA2013] 15 * 12 30 50.1641640768 -71 01 33.321359280           ~ 1 0
29 [NFP2017] 10 * 12 31 27.8942181648 -63 43 22.070045100           ~ 2 0
30 NAME Coalsack G2 MoC 12 31 29 -63 44.8           ~ 40 0
31 [NFP2017] 4 * 12 31 30.6121230840 -63 43 37.633153548           ~ 2 0
32 [NFA2013] 18 * 12 31 32.172 -63 43 30.69           ~ 2 0
33 [NFP2017] 2 * 12 31 32.4752476296 -63 43 10.510993992           ~ 2 0
34 2MASS J12361240-6311509 * 12 36 12.401 -63 11 50.95           ~ 1 0
35 [DB2002b] G301.22-0.38 MoC 12 36 19 -63 12.6           ~ 12 0
36 2MASS J15424095-3409598 * 15 42 40.953 -34 09 59.81           ~ 1 0
37 2MASS J15424185-3409435 * 15 42 41.858 -34 09 43.58           ~ 1 0
38 Barnard 228 cor 15 43 00.9 -34 08 48           ~ 70 0
39 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 670 0
40 BHR 144 MoC 16 37 28 -35 13.9           ~ 10 0
41 [NFA2013] 23 * 16 37 28.7700935328 -35 13 58.770353100           ~ 1 0
42 [LM99] L1782-2 cor 16 42 32.7 -19 43 37           ~ 7 0
43 [NFA2013] 24 * 16 42 33.4067750256 -19 43 50.419966080           ~ 1 0
44 [LM99] CB 68-1 cor 16 57 19.8 -16 08 46           ~ 5 0
45 2MASS J16572088-1608241 * 16 57 20.888 -16 08 24.15           ~ 1 0
46 2MASS J16572151-1608423 Y*O 16 57 21.514 -16 08 42.35           ~ 1 0
47 NGC 6543 PN 17 58 33.4039587288 +66 37 58.750734000   11.09 11.28     [WC] 1197 2
48 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
49 CK 2 Y*O 18 30 00.618 +01 15 20.12           K5-M0III 54 0
50 LDN 1082A DNe 20 53 29.6 +60 14 40           ~ 43 1
51 IRAS 20582+7724 Y*O 20 57 12.9250225656 +77 35 43.656301932           ~ 119 0
52 LDN 1228 DNe 20 57 13 +77 35.8           ~ 131 0
53 2MASS J20573495+7737415 * 20 57 34.951 +77 37 41.53           ~ 1 0
54 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 507 2
55 2MASS J22064175+5906156 Y*O 22 06 41.753 +59 06 15.66           ~ 3 0
56 2MASS J22064185+5906000 * 22 06 41.856 +59 06 00.02           ~ 1 0
57 LDN 1165 DNe 22 06 50.7 +59 02 47           ~ 43 0
58 LDN 1221 DNe 22 28 02.9 +69 01 13           ~ 51 0
59 2MASS J22283131+6902272 * 22 28 31.313 +69 02 27.24           ~ 1 0

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