2019ApJ...873...66R

Query : 2019ApJ...873...66R

2019ApJ...873...66R - Astrophys. J., 873, 66-66 (2019/March-1)

Massive stars in the SDSS-IV/APOGEE-2 survey. II. OB-stars in the (W345) complexes.

ROMAN-LOPES A., ROMAN-ZUNIGA C.G., TAPIA M., HERNANDEZ J., RAMIREZ-PRECIADO V., STRINGFELLOW G.S., YBARRA J.E., KIM J.S., MINNITI D., COVEY K.R., KOUNKEL M., SUAREZ G., BORISSOVA J., GARCIA-HERNANDEZ D.A., ZAMORA O. and TRUJILLO J.D.

Abstract (from CDS):

In this work, we have applied a semi-empirical spectral classification method for OB-stars using the APOGEE spectrograph to a sample of candidates in the W3-W4-W5 (W345) complexes. These massive star-forming regions span over 200 pc across the Perseus arm and have a notorious population of massive stars, from which a large fraction are members of various embedded and young open clusters. From 288 APOGEE spectra showing H-band spectral features typical of O- and B-type sources, 46 probably correspond to previously unknown O-type stars. Therefore, we confirm that Br11-Br13 together with He II λ16923 (7-12) and He II λ15723 (7-13) lines contained in the APOGEE spectral bands are useful in providing spectral classification down to one spectral sub-class for massive stars in regions as distant as d ≃ 2 kpc. The large number of newly found O-type stars as well as the numerous intermediate-mass population confirm that W345 is a very efficient massive star factory, with an integral stellar population probably amounting several thousand solar masses.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): Galaxy: stellar content - infrared: stars - stars: early-type - stars: massive - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/ApJ/873/66): table2.dat table3.dat>

Simbad objects: 70

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Number of rows : 70
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 LS I +60 226 * 02 17 53.2140969600 +61 11 12.923963808   11.95 10.82     O8.5-O9IV-V 20 0
2 IRAS 02144+6029 * 02 18 02.6687829480 +60 42 40.098803652           O9-B0I-III 6 0
3 LS I +61 266 * 02 22 44.9238714288 +61 50 23.752143996   12.52 11.78     O7.5IV-V 15 0
4 V* DN Cas SB* 02 23 11.5401628296 +60 49 50.178378072 10.22 10.46 9.93     O8.5V 93 0
5 LS I +61 267 * 02 24 36.1567179552 +61 41 15.904117608   12.22 11.17     O8IV-V 14 0
6 2MASS J02251857+6201169 Y*O 02 25 18.5673797160 +62 01 16.882020768   18.623 16.27 14.48 12.67 O5-7V+O7-9V 10 1
7 2MASS J02252738+6203432 * 02 25 27.3735722808 +62 03 43.121827224   18.333 16.418     O9.5IV-V 15 2
8 NAME W3 IRS 5 Y*O 02 25 40.54 +62 05 51.4           B1 367 0
9 Hilt 305 * 02 26 05.9752706328 +59 59 48.162877656 11.17 11.43 10.66     O9-B0IV-V 16 0
10 2MASS J02260862+6206477 Y*O 02 26 08.6079146424 +62 06 47.649741948           O9.5-B0IV-V 7 0
11 Sato 52 s*b 02 26 45.2787931200 +62 03 07.423616772   14.846 13.114     O9.7Ia 10 0
12 2MASS J02264963+6215350 Y*O 02 26 49.6370804928 +62 15 35.062188876   16.528 14.54 13.78   O6.5-O7IV-V 12 1
13 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
14 UCAC4 759-019225 * 02 27 15.5852145048 +61 37 31.193534964   14.629 13.395 13.115   O9.5IV-V 4 0
15 LS I +61 269 Y*O 02 27 27.0012048480 +62 03 27.934016544   13.21 12.39     O9.5-B0IV-V 15 1
16 TYC 4046-1930-1 * 02 28 09.0922636152 +60 49 10.924546872   12.41 11.47     O7.5IV-V 5 0
17 V* KM Cas Or* 02 29 30.4684170480 +61 29 44.163943476 12.21 12.285 11.229 10.990   O9.5V((f)) 53 0
18 2MASS J02302883+6132560 Y*O 02 30 28.8361712472 +61 32 56.079204504 14.41 14.34 13.26     B2.5V 15 0
19 2MASS J02311978+6130161 Y*O 02 31 19.7824367136 +61 30 16.121542860 13.17 13.29 12.47     B2.5V 19 0
20 LS I +61 272 * 02 31 54.6282662064 +62 03 29.088906084   11.02 10.64     O9.5-B0.5IV-V 13 0
21 BD+60 496 Y*O 02 31 56.1710199480 +61 32 13.385154660 10.64 11.10 10.60     B1V 37 0
22 BD+60 497 Y*O 02 31 57.0901516200 +61 36 43.948697940 10.466 9.39 8.85     O6.5V((f))+O8/B0V 110 0
23 LS I +61 275 EB* 02 32 09.6299057496 +61 38 23.556279372 11.59 12.04 11.445 11.64   B1V 37 0
24 BD+60 498 Y*O 02 32 10.8542551368 +61 33 07.940208384 11.61 10.47 9.94     O9V 113 0
25 BD+60 499 Y*O 02 32 16.7518284696 +61 33 14.996422332 10.27 10.85 10.31     O9.5V 87 0
26 NAME Heart Nebula HII 02 32.7 +61 27           ~ 336 1
27 2MASS J02324271+6129345 Y*O 02 32 42.7176295416 +61 29 34.482209316 11.33 11.71 11.22     B1.5V 31 0
28 IC 1805 158 Y*O 02 32 47.5614986376 +61 26 59.992622268 13.70 13.73 12.76     O9.5-B0.5IV-V 21 0
29 IC 1805 159 Y*O 02 32 49.3295858520 +61 26 41.588948940 14.36 14.45 13.74     O9-B0I-III 13 0
30 IC 1805 OpC 02 32 52.1 +61 28 36           ~ 542 1
31 LS I +61 287 Y*O 02 32 55.2304808304 +61 38 56.907143232 10.93 11.32 10.90     B1.5V 28 0
32 BD+60 506 Y*O 02 33 11.4562145568 +61 27 03.111314472 11.28 11.70 11.14     B1IV 37 0
33 IC 1805 188 Y*O 02 33 18.2348197992 +61 32 11.958603432 12.92 12.11 12.16     O9.5IV-V 24 0
34 HD 15629 Y*O 02 33 20.5873992264 +61 31 18.188762844 8.23 8.85 8.42     O4.5V((fc)) 255 0
35 BD+60 513 Y*O 02 34 02.5297182912 +61 23 10.877763048 9.38 9.88 9.39     O7Vnz 116 0
36 LS I +61 297 Y*O 02 34 15.0110270712 +61 24 40.270765752 11.33 11.45 10.937 11.08   B1V 22 0
37 2MASS J02343148+6130350 Y*O 02 34 31.4910714120 +61 30 35.095652208 11.65 11.97 11.51     B2V 30 0
38 LS I +61 298 Y*O 02 34 32.4297049536 +61 47 15.138539124 11.24 11.61 11.01     O9.5-B0.5IV-V 21 0
39 LS I +62 217 EB* 02 34 46.6158639960 +62 34 37.387567056   11.95 11.70     O9.5-B0.5IV-V 14 0
40 BD+61 441 * 02 37 32.4161577960 +61 50 31.758146988   9.69 9.49     O9.5-B0IV-V 15 0
41 BD+60 523 Em* 02 37 47.4130720128 +61 00 38.128253436   10.63 10.17     OB 21 0
42 BD+60 529 Y*? 02 39 00.1567927272 +61 14 15.716586228   11.58 11.23     O9.5-B0IV-V 16 0
43 LS I +61 302 EB* 02 39 18.0578182512 +61 19 25.190748876   11.16 10.77     O8.5IV-V 18 0
44 NAME W3/W4/W5 Region SFR 02 40.0 +61 00           ~ 34 0
45 TYC 4047-1732-1 * 02 40 34.3606090128 +61 18 15.066367092   12.21 11.46     O9.5-B0IV-V 6 0
46 BD+60 542 * 02 40 46.1369674104 +61 17 48.508997748   11.14 10.44     O9-B0IV-V 17 0
47 LS I +61 306 * 02 40 51.0471822888 +61 15 45.446713272   11.52 11.10     O9.5-B0IV-V 14 0
48 LS I +60 256 Em* 02 42 58.5032335728 +60 46 45.700979052   11.57 11.12     O9.5-B0.5IV-V 15 0
49 UCAC4 754-026225 * 02 44 23.6562953640 +60 40 58.055481408   13.360 12.555 12.440   O9.5-B0IV-V 4 0
50 LS I +60 260 * 02 45 57.6373877808 +60 49 47.965396476   12.07 11.50     B1 13 0
51 UCAC4 752-026183 * 02 46 10.1046639384 +60 15 57.718640340   15.310 13.902 13.554   O8.5IV-V 4 0
52 LS I +62 227 * 02 48 51.1260576120 +62 12 58.519958364   10.93 10.40     O9-B0I-III 15 0
53 LS I +60 263 * 02 49 06.3717502200 +60 33 38.496852828   11.57 10.82     O7.5I-III 16 0
54 HD 237007 Y*O 02 50 34.9021363608 +60 24 06.713097444 10.743 9.68 9.41     O9.5-B0IV-V 66 0
55 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
56 HD 237011 * 02 51 35.7244284120 +60 32 51.355948164   10.35 10.05     B1V 27 1
57 HD 237012 * 02 51 36.4876812432 +60 33 11.653699500   10.14 9.67     B0III 22 1
58 LS I +60 276 * 02 52 28.7467862784 +60 25 11.581005108   10.77 10.46     O9.5-B0IV-V 13 0
59 LS I +60 278 * 02 53 07.6817904408 +60 36 07.456389300 10.53 11.02 10.41     O9.5-B0IV-V 13 0
60 HD 237019 Y*O 02 53 28.4714345208 +60 27 34.983778176 11.257 10.14 9.70     O6.5-O7IV-V 96 0
61 BD+60 586 * 02 54 10.6733578416 +60 39 03.492857052 9.632 8.713 8.489 8.893   O7Vz 103 0
62 BD+60 594 * 02 57 04.1273587152 +61 24 57.669134904 10.563 9.58 9.30     O9.5IV-V 98 0
63 TYC 4048-1898-1 Y*O 02 58 01.3942556952 +60 28 28.156918728   12.86 12.76     O8-O9.5IV-V 5 0
64 HD 18326 Y*O 02 59 23.1709737312 +60 33 59.519691216 9.211 8.21 7.94     O6.5V((f))z+O9/B0V: 142 0
65 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
66 LS I +60 298 ** 03 01 19.3721593092 +60 34 20.259861357 10.61 10.941 10.210 9.999   B2III: 37 0
67 LS I +61 320 * 03 02 59.8562155512 +61 41 38.409609516 11.46 11.64 11.38     O9.5IV-V 11 1
68 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
69 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 238 0
70 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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