! Proposal 5879, submission 1
! Revised version emailed 5/31/95
! PI: Richard C. Henry
! Received Mon Feb 27 11:28:00 EST 1995
! From: murthy@eta.pha.jhu.edu
! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template
! $Id: 5879,v 9.1 1995/11/20 19:26:57 pepsa Exp $
!
! Refer to the HST Phase II Proposal Instructions to fill this out
!
! Anything after a "!" is ignored, and may be deleted
!
! All keywords with multiple entries are comma delimited except the
! Visit_Requirements and Special_Requirements keywords which can be
! delimited with carriage returns or semi-colons, but not commas
!
! For help call your Program Coordinator: Alice Berman
! Phone: 410 338-4462 , E-mail: aberman@stsci.edu
!
! This partially completed template was generated from a Phase I
! proposal.
Proposal_Information ! Section 4
Title: The Deuterium to Hydrogen Ratio in the
Interstellar Medium
Proposal_Category: GO
Scientific_Category: Interstellar Medium
Cycle: 5
Investigators
PI_name: Richard C. Henry
PI_Institution: The Johns Hopkins University
CoI_Name: Wayne Landsman
CoI_Institution: STX Corporation
Contact: ! Y or N
CoI_Name: Jean Audouze
CoI_Institution: CNRS Institut d'Astrophysique
Contact: ! Y or N
CoI_Name: Alec Brown
CoI_Institution: JILA, University of Colorado
Contact: ! Y or N
CoI_Name: Ken Gayley
CoI_Institution: JILA, University of Colorado
Contact: ! Y or N
CoI_Name: Jeffrey Linsky
CoI_Institution: JILA, University of Colorado
Contact: ! Y or N
CoI_Name: Warren Moos
CoI_Institution: The Johns Hopkins University
Contact: ! Y or N
CoI_Name: Jayant Murthy
CoI_Institution: The Johns Hopkins University
Contact: Y ! Y or N
CoI_Name: A. Vidal-Madjar
CoI_Institution: CNRS Institut d'Astrophysique
Contact: ! Y or N
Abstract: ! Free format text (please update)
We will use the GHRS to study the deuterium to hydrogen ratio in the
local interstellar medium through observations of their interstellar
absorption against the chromospheric HI Lyman-Alpha emission line of 7
nearby late-type stars. This method provides the only reliable
determination of the D/H ratio in a setting where the processing of
primordial deuterium is relatively well understood. Except for the
observation of Linsky et al. (1993), all previous attempts to
determine this ratio in the LISM have been compromised by poor
signal-to-noise and insufficient instrumental resolution and the best
numbers are on the order of 1.0times10^-5 implying a baryon density on
the order of 1.0times10^-30 g cm^-3 in the universe. With observations
of several stars in different directions we expect to determine the
best value for the D/H ratio in the local interstellar medium and to
either prove or lay to rest controversial claims of local variations
in the ratio. As optical measurements have revealed several velocity
components on scales of 5 pc and less in the LISM, we also plan to
observe interstellar MgII and, where possible, FeII absorption lines
against the same stars. These narrow features will allow us to
discriminate between the different velocity components and thus model
more precisely the interstellar HI absorption profile. We will thus
also be able to place strong constraints on the column density,
velocity dispersion, and bulk motion of the interstellar gas along
many different lines of sight.
Questions ! Free format text (please update)
Observing_Description:
We are planning to observe 7 late-type stars in the immediate vicinity
of the Sun. These stars have been selected on the basis of their
strong Lyman-Alpha flux and the likelihood of being behind a small
enough column density of HI to allow detection of the interstellar DI
feature. The stars are well distributed in galactic coordinates and
will thus allow a determination of the D/H ratio in different
environments over different pathlengths. We will also observe
interstellar MgII absorption, and FeII absorption where possible, to
fully resolve the velocity structure of the gas in the line of
sight. All of our Lyman-Alpha observations are to be made through the
Echelle-A of the GHRS. We have chosen an exposure time of 1 hour at
Lyman-Alpha for each of our cool stars, yielding expected S/N between
60 and 130. The FeII (2600 A) and MgII (2800 A) lines will be observed
through Echelle-B with an exposure time of 2 minutes for each line,
yielding S/N of between 80 and 170. Note that we will only observe
FeII toward the two stars Beta-Cas and Alpha-Tri.
Real_Time_Justification:
There are optimum times of the year (typically a three month window)
for obtaining Lyman-Alpha observations toward late- type stars. These
times are when the velocity of the Earth is such that geocoronal
Lyman-Alpha (arising in the Earth's atmosphere) is centered in the
core of the HI absorption profile, where it may easily isolated and
removed. This strategy has been successfully used in both our
Copernicus and IUE observations (see Murthy et al. 1987). In addition,
we wish to observe Sigma-Gem at two different phases to disentangle
stellar features from the interstellar lines. No supporting or
coordinated observations are needed.
Calibration_Justification: None
Additional_Comments:
We are planning to use the interstellar absorption lines at Mg 2800 A
to extract different velocity components along the line of sight to
each star. We will then apply these ISM velocities to our observations
at Lyman-Alpha. We (in consultation with our P.C.) tentatively
concluded that no special wavelength calibrations were needed but want
to make sure of that.
Fixed_Targets ! Section 5.1
! Target coordinates updated from Hipparcos - 5/26/95
Target_Number:1
Target_Name:HD432
Alternate_Names:BETA-CAS, GSC3664-01985
Description:STAR, F0-F2
Position: RA = 00H 09M 10.63S +/- 0.01S,
DEC = 59D 08' 59.8" +/- 0.1"
Equinox:J2000
RV_or_Z:V=+012
RA_PM:+0.0679 ! Units are seconds of time per year
Dec_PM:-0.177 ! Units are seconds of arc per year
Epoch:2000.000
Annual_Parallax:+0.0692
Flux:F(1215) = 10 +/- 5 E-12, !Include at least V and B-V
F(2600) = 10 +/- 3 E-11,
F(2800) = 4 +/- 1 E-11,
V = 2.28
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:
! RA=0H 9M 10.719S +/- .01S,
! DEC=+59D 8' 58.99" +/- .01",
! Epoch:B1950
! Flux: V = 2.27
Target_Number:2
Target_Name:HD11443
Alternate_Names:ALPHA-TRI, GSC1763-03028
Description:STAR, F3-F9
Position: RA = 01H 53M 4.86S +/- 0.01S,
DEC = 29D 34' 44.3" +/- 0.1"
Equinox:J2000
RV_or_Z:V=-013
RA_PM:+0.0008 ! Units are seconds of time per year
Dec_PM:-0.229 ! Units are seconds of arc per year
Epoch:2000.000
Annual_Parallax:+0.0534
Flux:F(1215) = 11 +/- 5 E-12,!Include at least V and B-V
F(2600) = 10 +/- 3 E-11,
F(2800) = 4 +/- 1 E-11,
V = 3.40
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:RA=1H 53M 4.8995S +/- .01S,
! DEC=+29D 34' 43.94" +/- .01"
! Epoch:B1950
! Flux:V = 3.41
Target_Number:3
Target_Name:HD62044
Alternate_Names:SIGMA-GEM, GSC1924-02022
Description:STAR, K III-I
Position: RA = 07H 43M 18.69S +/- 0.01S,
DEC = 28D 53' 0.4" +/- 0.1"
Equinox:J2000
RV_or_Z:V=+046
RA_PM:+0.0051
Dec_PM:-0.234
Epoch:2000.000
Annual_Parallax:+0.0178
Flux:F(1215) = 3 +/- 1 E-11, !Include at least V and B-V
F(2800) = 4 +/- 1 E-11,
V = 4.30
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:
! RA=7H 43M 18.7375S +/- .01S,
! DEC=+28D 53' 0.52" +/- .01S
! Epoch:B1950
! Flux:V = 4.28
Target_Number:4
Target_Name:HD62509
Alternate_Names:BETA-GEM, GSC1920-02194
Description:STAR, K III-I
Position: RA = 07H 45M 18.95S +/- 0.01S,
DEC = 28D 01' 34.2" +/- 0.1"
Equinox:J2000
RV_or_Z:V=+003
RA_PM:-0.0474
Dec_PM:-0.051
Epoch:2000.000
Annual_Parallax:+0.0969
Flux:F(1215) = 17 +/- 3 E-12, !Include at least V and B-V
F(2800) = 4 +/- 1 E-11,
V = 1.10
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:
! RA=7H 45M 18.9435S +/- .01S,
! DEC=+28D 1' 34.28" +/- .01"
! Epoch:B1950
! Flux:V = 1.14
Target_Number:5
Target_Name:HD4128
Alternate_Names:BETA-CET, GSC5847-02333
Description:STAR, K III-I
Position: RA = 00H 43M 35.36S +/- 0.01S,
DEC = -17D 59' 11.7" +/- 0.1"
Equinox:J2000
RV_or_Z:V=+013
RA_PM:+0.163
Dec_PM:-0.036
Epoch:2000.000
Annual_Parallax:+0.061
Flux:F(1215) = 18 +/- 2 E-12, !Include at least V and B-V
F(2800) = 10 +/- 1 E-11,
V = 2.07
Comments: Coordinates are from Hipparcos INCA 6/12/95
! Original values:
! Position:RA = 00H 43M 35.3S +/- 0.01S,
! DEC = -17D 59' 12.0" +/- 0.1"
! Epoch: 1950
! Flux: V = 2.04
Target_Number:6
Target_Name:HD22049
Alternate_Names:EPS-ERI, GSC5296-01533
Description:STAR, K V-IV
Position: RA = 03H 32M 55.84S +/- 0.01S,
DEC = -09D 27' 29.7" +/- 0.1"
Equinox:J2000
RV_or_Z:V=+015
RA_PM:-0.0662
Dec_PM:+0.019
Epoch:2000.000
Annual_Parallax:+0.3056
Flux:F(1215) = 10 +/- 2 E-12, !Include at least V and B-V
F(2800) = 5 +/- 1 E-11,
V = 3.70
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:
! RA=3H 32M 55.8545S +/- .01S,
! DEC=-9D 27' 29.65" +/- .01"
! Epoch:B1950
! Flux:V = 3.73
Target_Number:7
Target_Name:HD111812
Alternate_Names:31-COM, GSC1995-02586
Description:STAR, G III-I
Position: RA = 12H 51M 41.92S +/- 0.01S,
DEC = 27D 32' 26.4" +/- 0.1"
Equinox:J2000
RV_or_Z:V=-001
RA_PM:-0.0010
Dec_PM:-0.013
Epoch:2000.000
Annual_Parallax:+0.0096
Flux:F(1215) = 8 +/- 2 E-12, !Include at least V and B-V
F(2800) = 10 +/- 3 E-12,
V = 4.90
Comments: Coordinates are from Hipparcos INCA
! Original values:
! Position:
! RA=12H 51M 41.9195S +/- 0.01S,
! DEC=+27D 32' 26.42" +/- 0.01"
! Epoch:B1950
! Flux:V = 4.94
Visits ! Section 6
Visit_Number:1
Visit_Requirements: BETWEEN 17-APR-95 AND 5-NOV-95
On_Hold_Comments:
Visit_Comments: CAN BE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD432
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:BRIGHT=RETURN
Number_of_Iterations:1
Time_Per_Exposure:9S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-4
Comments: STEP-TIME=1S
Exposure_Number:2 ! Section 6.5
Target_Name:HD432
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2600
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD432
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:4 ! Section 6.5
Target_Name:HD432
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:19
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:2
Visit_Requirements: BETWEEN 10-MAY-95 AND 17-OCT-95
On_Hold_Comments:
Visit_Comments: CAN BE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD11443
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:9S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-4
Comments: STEP-TIME=1S
Exposure_Number:2 ! Section 6.5
Target_Name:HD11443
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2600
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD11443
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:4 ! Section 6.5
Target_Name:HD11443
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:11
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:3
Visit_Requirements: BETWEEN 29-JUL-95 AND 31-DEC-95
On_Hold_Comments:
Visit_Comments: CAN USE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:72S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=8S
Exposure_Number:2 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:108.8S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:11
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:4
Visit_Requirements:BETWEEN 29-JUL-95 AND 31-DEC-95
On_Hold_Comments:
Visit_Comments:CAN USE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD62509
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:BRIGHT=RETURN
Number_of_Iterations:1
Time_Per_Exposure:45S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=5S
Exposure_Number:2 ! Section 6.5
Target_Name:HD62509
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD62509
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:18 ! Extra exposure added 5/31/95
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:5
Visit_Requirements:BETWEEN 8-AUG-95 AND 18-OCT-95
On_Hold_Comments:
Visit_Comments:ALSO 1-MAR-96 AND 11-MAY-96; CAN USE SAME DATES IN
1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD4128
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:45S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=5S
Exposure_Number:2 ! Section 6.5
Target_Name:HD4128
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD4128
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:11
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:6
Visit_Requirements: BETWEEN 21-MAY-95 AND 20-OCT-95
On_Hold_Comments:
Visit_Comments:CAN ALSO USE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD22049
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:45S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=5S
Exposure_Number:2 ! Section 6.5
Target_Name:HD22049
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2600
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD22049
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:17
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:7
Visit_Requirements: BETWEEN 3-AUG-95 AND 4-OCT-95
On_Hold_Comments:
Visit_Comments:ALSO 08-MAR-96 AND 9-JUNE-96; CAN USE SAME DATES IN
1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD111812
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:45S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=5S
Exposure_Number:2 ! Section 6.5
Target_Name:HD111812
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2600
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:326.4S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD111812
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:17
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Visit_Number:8
Visit_Requirements:BETWEEN 29-JUL-95 AND 31-DEC-95
On_Hold_Comments:
Visit_Comments: CAN USE SAME DATES IN 1996
Exposure_Number:1 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACQ
Aperture:2.0
Sp_Element:MIRROR-A2
Wavelength:
Optional_Parameters:
Number_of_Iterations:1
Time_Per_Exposure:72S
Special_Requirements: ! Section 7.2
ONBOARD ACQuisition FOR 2-3
Comments: STEP-TIME=8S
Exposure_Number:2 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-B
Wavelength:2800
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:1
Time_Per_Exposure:108.8S
Special_Requirements: ! Section 7.2
Exposure_Number:3 ! Section 6.5
Target_Name:HD62044
Config:HRS
Opmode:ACCUM
Aperture:2.0
Sp_Element:ECH-A
Wavelength:1215
Optional_Parameters:FP-SPLIT=FOUR
DOPPLER=ON
Number_of_Iterations:11
Time_Per_Exposure:435.2S
Special_Requirements: ! Section 7.2
Comments:
Data_Distribution ! Defaults indicated; change if desired
Medium: 8MM ! 8MM or 6250BPI or 1600BPI
Blocking_Factor: 10 ! 10 or 1
Ship_To: PI_Address ! The Johns Hopkins University
! Department of Physics and Astronomy
! Baltimore, MD 21218-2695
Ship_Via: UPS ! UPS (2-day) or OVERNIGHT
! Overnight shipping done at PI
! expense
Recipient_Email: ! Needed if Ship_To: is not
! PI_Address
! Let us know what you think of this template and software!
! Please send a list of your likes and dislikes to your Program
! Coordinator