1998AJ....116..868I

Query : 1998AJ....116..868I

1998AJ....116..868I - Astron. J., 116, 868-880 (1998/August-0)

A survey of dust features in the 3 micron spectra of YSO candidates.

ISHII M., NAGATA T., SATO S., WATANABE M., YAO Y. and JONES T.J.

Abstract (from CDS):

We present the results of spectrophotometry from 1.3 to 4.2 µm of 45 IRAS sources in the list of Campbell, Persson, & Matthews that have been presumed to be luminous young stellar objects because of their infrared colors and large IRAS fluxes. About 70% of the objects show 3.1 µm H2O ice absorption or 3.3 µm unidentified infrared emission, or both. Among those with 3.1 µm H2O ice absorption, three objects seem to have a distinct absorption near 3.4 µm, and their absorption profiles are different than the optical depth profiles of young stellar objects in the literature. In the HKL two-color diagram, objects with ice absorption occupy the same region as previously known young stellar objects with the ice feature, and those with unidentified infrared emission overlap with Herbig Ae/Be stars. We interpret the distribution in the HKL two-color diagram as indicating the evolutionary sequence of intermediate- to high-mass young stars.

Abstract Copyright: ∼

Journal keyword(s): Stars: Circumstellar Matter - ISM: Dust, Extinction - Stars: Pre-Main-Sequence

CDS comments: Table 1: Objects NN = CPM NN, Objects NN' = CPM PNN.

Simbad objects: 45

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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 - 2026 		#notes
1 2MASS J00235704+6605515 Y*O 00 23 57.0500557536 +66 05 51.747059688           ~ 28 0
2 V* NX Cas Y*O 00 38 59.3657735875 +59 27 47.791100439           ~ 19 0
3 2MASS J01175302+6427142 Y*O 01 17 53.0277209359 +64 27 14.289051463           ~ 17 0
4 [KSP2003] J024825.61+605508.0 Y*O 02 48 25.61 +60 55 08.0           ~ 12 0
5 IRAS 02497+6217 Y*O 02 53 43.4742904968 +62 29 23.012157228           ~ 14 0
6 2MASS J03172668+6009412 Y*O 03 17 26.68 +60 09 41.3           ~ 22 0
7 CPM 8 Y*O 03 33 10.15 +55 10 55.8           ~ 11 0
8 IRAS 03494+5204 LP* 03 53 15.988 +52 13 00.94           ~ 6 0
9 RAFGL 5113 Or* 04 10 11.8514463792 +50 59 54.681713664           ~ 29 0
10 IRAS 04579+4703 Y*O 05 01 39.661 +47 07 21.92           ~ 51 0
11 IRAS 05137+3919 Cld 05 17 13.3 +39 22 14           ~ 75 0
12 IRAS 05198+3325 Y*O 05 23 08.244 +33 28 34.01   14.45 15.734 15.442 14.085 B1.5Ve 26 0
13 CPM 17 V*? 05 37 22.7 +27 46 27           ~ 12 0
14 CPM 18 Y*O 05 38 47.2 +30 41 28           ~ 26 0
15 CPM 05439+3035 N Y*O 05 47 12.19 +30 36 15.3           ~ 4 0
16 2MASX J05471330+3036099 Y*O 05 47 13.308 +30 36 09.98           ~ 5 0
17 MSX6C G188.9696-01.9380 Y*O 05 58 24.452 +20 13 57.08           ~ 21 0
18 IRAS 05568+3206 Y*O 06 00 04.99320 +32 06 31.8276           ~ 20 0
19 IRAS 06040+2958 Or* 06 07 15.3938177424 +29 57 55.038550716   15.3 14.0     B2 26 0
20 EM* MWC 790 Em* 06 07 23.9375292000 +30 11 44.321473428   13.24 12.58 12.48   Be 19 0
21 2MASS J06235631+1430280 Or* 06 23 56.3104143768 +14 30 28.091289924 15.67 15.67 14.67     B2 34 0
22 IRAS 06294+0352 Y*O 06 32 07.5169232496 +03 50 07.586020356           ~ 17 0
23 KHA 39 Y*O 06 36 22.3196567400 +10 54 44.007785640       16.15   ~ 11 0
24 2MASS J06374159-0058376 Y*O 06 37 41.5966904565 -00 58 37.643706888           ~ 11 0
25 2MASX J06494021-0332523 Y*O 06 49 40.214 -03 32 52.36           ~ 11 0
26 2MASS J06543524-0042221 Y*O 06 54 35.25 -00 42 22.1           ~ 13 0
27 2MASX J06560633+0033477 Y*O 06 56 06.336 +00 33 47.70           ~ 11 0
28 IRAS 06552-0948 Y*O 06 57 35.1429253516 -09 52 40.292111768           ~ 7 0
29 PN MaC 1-1 Ae? 06 58 44.3623639536 -03 41 09.981124008   16.23 15.0     O9?e 40 1
30 IRAS 06584-0852 Y*O 07 00 50.94192 -08 56 30.1812           ~ 37 0
31 2MASX J07191037-1749270 Y*O 07 19 10.377 -17 49 27.08           ~ 6 0
32 RAFGL 5542 Y*O 18 53 37.88832 +01 50 30.5844           ~ 78 0
33 IRAS 19094+0944 mul 19 11 52.0 +09 49 46           ~ 18 0
34 SH 2-87 bub 19 46 20.69 +24 35 15.4           ~ 161 2
35 CPM 35 cor 20 23 23.855 +41 17 40.49           ~ 58 0
36 JCMTSF J202528.1+410812 * 20 25 27.8 +41 08 20           ~ 10 0
37 IRAS 20266+3544 Y*O 20 28 34.2437845560 +35 54 17.383789044           ~ 12 0
38 CPM P13 * 20 29 04.9 +40 31 58           ~ 11 0
39 2MASS J21314511+5115353 * 21 31 45.11 +51 15 35.3           ~ 10 0
40 PN K 4-45 Y*O 21 35 21.061 +53 47 11.21           ~ 57 2
41 2MASS J21430143+5456183 Y*O 21 43 01.4400 +54 56 17.800           ~ 64 2
42 IRAS 21558+5907 Y*O 21 57 25.2013300135 +59 21 56.651665029           ~ 28 0
43 CPM 37 HII 22 16 10.2534929760 +52 21 21.888940392           ~ 34 1
44 CPM 38 Y*O 22 55 59.780 +58 14 42.49           ~ 43 0
45 CPM 40 LP* 23 41 25.2212789088 +65 40 42.500854020       15.631   ~ 15 1

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