J/ApJ/858/111 Visible obs. of GOT C+ Northern sightlines (Rice+, 2018)
The connection between different tracers of the diffuse interstellar medium:
kinematics.
Rice J.S., Federman S.R., Flagey N., Goldsmith P.F., Langer W.D.,
Pineda J.L., Lambert D.L.
<Astrophys. J., 858, 111 (2018)>
=2018ApJ...858..111R 2018ApJ...858..111R
ADC_Keywords: Interstellar medium; Spectra, optical; Molecular data
Keywords: ISM: atoms; ISM: clouds; ISM: molecules; ISM: structure;
radio lines: ISM; submillimeter: ISM
Abstract:
Using visible, radio, microwave, and submillimeter data, we study
several lines of sight toward stars generally closer than 1kpc on a
component-by-component basis. We derive the component structure seen
in absorption at visible wavelengths from CaII, CaI, KI, CH, CH+, and
CN and compare it to emission from HI, CO and its isotopologues, and
C+ from the GOT C+ (Galactic Observations of Terahertz C+) survey
(Langer+ 2010A&A...521L..17L 2010A&A...521L..17L). The correspondence between components
in emission and absorption helps create a more unified picture of
diffuse atomic and molecular gas in the interstellar medium. We also
discuss how these tracers are related to the CO-dark H2 gas probed by
C+ emission and discuss the kinematic connections among the species
observed.
Description:
The data at visible wavelengths were taken at the McDonald Observatory
in 2012 December, 2014 July, and 2017 October with the echelle
spectrograph. Table 1 lists the stellar data and observational details
for the seventeen lines of sight.
Table 2 gives the results of fitting the absorption from the CaII,
CaI, KI, CH+, CH and CN species.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 17 Stellar data
table2.dat 115 137 Observations from McDonald observatory
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See also:
III/67 : Catalogue of Be stars (Jaschek+, 1982)
I/261 : The FON Astrographic Catalogue (FONAC) (Kislyuk+ 1999)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
VII/7 : Lynds' Catalogue of Dark Nebulae (LDN) (Lynds 1962)
VII/244 : Atlas and Catalog of Dark Clouds (Dobashi+, 2005)
VI/139 : Herschel Observation Log (Herschel Science Centre, 2013)
I/342 : FON Astrographic Catalogue, Version 3.0 (Andruk+, 2016)
J/A+AS/80/149 : IRAS Sources behind the Solar circle (Wouterloot+ 1989)
J/ApJS/147/61 : Interstellar Ca I absorption (Welty+, 2003)
J/PASJ/56/313 : 13CO survey of Mon & CMa molecular clouds (Kim+, 2004)
J/AN/331/349 : O, B-type & red supergiant masses & luminosities (Hohle+, 2010)
J/PASJ/63/S1 : Atlas & catalog of dark clouds based on 2MASS (Dobashi+, 2011)
J/ApJ/741/110 : The BGPS. VII. Massive star-forming regions (Dunham+, 2011)
J/ApJS/195/14 : Bolocam Galactic Plane Survey (BGPS). V. (Schlingman+, 2011)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Date UT date of observation
10- 19 A10 --- Star Star name
21- 26 F6.2 deg GLON [10.4/234.4] Galactic longitude
28- 32 F5.2 deg GLAT [-1.1/1.1] Galactic latitude
34- 38 F5.2 mag Bmag [8/10.1] B-band magnitude
40 A1 --- r_Bmag Reference of Bmag (1)
42- 45 F4.2 mag Vmag [7.8/10] V-band magnitude
47 A1 --- r_Vmag Reference of Vmag (1)
49- 52 F4.2 mag E(B-V) [0.02/1.4]? Color excess
54- 57 I4 pc Dist [200/2000]? Distance
59- 66 A8 --- SpT MK spectral type
68 A1 --- r_SpT Reference of SpT (1)
70- 74 I5 s ExpB [3600/17700]? Exposure time for "blue" setting (2)
76- 79 I4 s ExpR [3600/7200]? Exposure time for "blue" setting (2)
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Note (1): Reference as follows:
a = Jaschek & Egret (1982, III/67).
b = Houk & Smith-Moore (1988, III/133).
c = Hog et al. (2000, I/259).
d = Ducati (2002, II/237).
e = Walborn & Fitzpatrick (2000PASP..112...50W 2000PASP..112...50W).
f = Morgan et al. (1955ApJS....2...41M 1955ApJS....2...41M).
g = Cannon & Pickering (1993, III/135).
h = Houk & Swift (1999, III/214).
i = ESA (1997, I/239).
j = Kislyuk et al. (2000KFNT...16..483K 2000KFNT...16..483K ; I/261).
k = Hohle et al. (2010, J/AN/331/349).
l = Guetter (1968PASP...80..197G 1968PASP...80..197G).
m = Claria (1974AJ.....79.1022C 1974AJ.....79.1022C).
Note (2): CaIIλ3933, CaIλ4226, CH+λ4232, CHλ4300,
and CNλ3874 absorption features were able to all be observed with a
single exposure using the 56th order of the echelle grating centered
at 4065Å. This setting is denoted as "Blue".
KIλ7699 was observed with the 31st order of the echelle grating
centered on 7165Å. This setting is denoted as "Red".
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Star Star identifier
12 A1 --- f_Star [b] b= no additional data
14- 18 F5.1 km/s V-CaII [-46/66]? CaII3933Å local standard of rest
velocity
20- 24 F5.1 10+11/cm2 N-CaII [0.4/500]? CaII3933Å column density
26- 28 F3.1 km/s b-CaII [1/2.5]? CaII3933Å b-value
30- 34 F5.1 km/s V-KI [-15/15]? KI7699Å local standard of rest
velocity
36- 38 F3.1 10+11/cm2 N-KI [0.1/9.6]? KI7699Å column density
40- 42 F3.1 km/s b-KI [0.7/2.5]? KI7699Å b-value
44- 48 F5.1 km/s V-CaI [-13/23]? CaI4226Å local standard of rest
velocity
50- 53 A4 --- l_N-CaI [≤ ] Limit flag on N-CaI
55- 59 F5.3 10+11/cm2 N-CaI [0.05/0.2]? CaI4226Å column density
61- 63 F3.1 km/s b-CaI [0.4/2.5]? CaI4226Å b-value
65- 69 F5.1 km/s V-CH+ [-16/28]? CH+4232Å local standard of
rest velocity
71- 75 F5.1 10+11/cm2 N-CH+ [19/360]? CH+4232Å column density
77- 79 F3.1 km/s b-CH+ [1/3.5]? CH+4232Å b-value
81- 84 F4.1 km/s V-CH [-7/23]? CH4300Å local standard of rest
velocity
86- 90 F5.1 10+11/cm2 N-CH [12.4/345]? CH4300Å column density
92- 94 F3.1 km/s b-CH [0.8/2.5]? CH4300Å b-value
96- 99 F4.1 km/s V-CN [-2/18.5]? CN3874Å local standard of
rest velocity (1)
101-104 A4 --- l_N-CN [≤ ] Limit flag on N-CN
106-111 F6.1 10+11/cm2 N-CN [1.9/340]? CN3874Å column density (1)
113-115 F3.1 km/s b-CN [0.3/1.7]? CN3874Å b-value (1)
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Note (1): The column density for CN includes J=0 and J=1 for detections. For
upper limits, the column density for CN includes J=0 (at the maximum
depth at the largest CH component with b=1 km/s) and includes the
predicted J=1 column density, 50% of the J=0 column density.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 01-Apr-2019