! Proposal 5933, submission 1 ! PI: Susan Neff ! Received Fri Feb 24 17:29:31 EST 1995 ! From: sas@kromos.jpl.nasa.gov ! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 5933,v 4.1 1995/11/22 02:02:43 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: Ray Lucas ! Phone: 410 338-4716 , E-mail: lucas@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sat Dec 17 10:49:20 EST 1994 ! Proposal_Information ! Section 4 Title: UV Spectroscopy of the Starburst Regions in Arp 299 Proposal_Category: GO Scientific_Category: Galaxies & Clusters Cycle: 5 Investigators PI_name: Susan Neff PI_Institution: NASA/GSFC CoI_Name: Adam Stanford CoI_Institution: JPL Contact: Y ! Y or N (designate at most one contact) CoI_Name: Bill Vacca CoI_Institution: UC-Berkeley Contact: ! Y or N (designate at most one contact) CoI_Name: Marshall Joy CoI_Institution: NASA/MSFC Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose to obtain FOS UV spectroscopy of the main starburst regions in the interacting galaxy system Arp 299 (=NGG3690/IC694). In Cycle 2 we obtained FOC UV images to locate the brightest UV knots in this pair of colliding galaxies, which many other wavelength regimes show to be the site of intense star formation. We will use spatially- resolved UV spectra of the starburst knots to place constraints on the ages, duration, and upper mass cut-off of the bursts. The relationship of these ages to the kinematics of the collision will be used to investigate the way the dynamics of a collision controls the location, strength and timing of starbursts in interacting galaxies. Questions ! Free format text (please update) Observing_Description: For each of 7 starburst regions we want to obtain a ~one hour exposure with the G160L grating on the FOS blue side with the 1.0 aperture. The aperture size is dictated by the separation of the emission regions, each of which is nearly a point source but only several arcsec apart. With the 1.0 aperture the observation will get nearly all of the flux from one region without including light from any other region. The G160L grating on the blue side was selected because it covers the necessary wavelength range for measuring the important aborption and emission lines produced by massive stars including Si iv Lambda 1400, C iv Lambda 1550, He ii Lambda 1640, and C iii Lambda 1909. The resulting wavelength resolution of ~6.5 Angstrom is sufficiently high to achieve our scientific goals. The ~one hour exposures will result in S/N=15 per diode on average for each starburst region at Lambda 1500 Angstrom. This exposure time was calculated based on the flux measured for each starburst region in our FOC UV images, and the curve shown in Figure 1.2.3 of the FOS Handbook for the G160L grating. For example, for region B1, the measured flux in a 0.9 arcsec aperture is 25 counts/s, which is equivalent to ~5.5 * 10^-16 erg s^-1 ang^-1 cm^-2. This value must be corrected by a factor of ~3 for the pre-COSTAR PSF, which brings the flux density in region B1 to ~1.6 * 10^-15 erg s^-1 ang^-1 cm^-2. The curve for the G160L grating in Figure 1.2.3 shows a count rate of ~0.4 per diode for F_Lambda= 1 * 10^-14 erg s^-1 ang^-1 cm^- 2. So the predicted count rate for B1 is 0.065 per diode, and to reach S/N=15 per diode a 57 minute exposure is required. The FOC UV image in Figure 1 shows the main knots of UV emission in the two galaxies of the Arp 299 system. We intend to obtain an UV spectrum of each of the 5 main knots, plus two smaller knots in region C, to achieve our scientific goal of mapping the progression of starbursts relative to the dynamics of the galaxy collision. Note that the observations will be very efficient (80%) because of the location of Arp 299 in the CVZ , and because they can be done as one visit. The total time required is 6 orbits, based on an average exposure time of 65 minutes per exposure for 7 knots, 9 minutes of ACQ/BINARY for each knot, 6 minutes of overhead per exposure for the ACCUM mode, and 12 minutes for the initial GS acquisition. Real_Time_Justification: The position of Arp 299 places it in a CVZ, which we want to take advantage of for efficiency. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: NGC3690-OFFSET Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA=11H 28M 29.92S +/- 0.05S, ! Most common specification format DEC=58D 33' 40.1" +/- 0.5" ! RA=0H 0M 0.00S +/- 0S, ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 17.0 +/- 0.3 B-V = 0.3 +/- 0.1 E(B-V) = 0.2 +/- 0.02 F(2000) = 1.2 +/- 0.3 E-15 ! Include at least V and B-V Comments: V mag is within 1 arcsec aperture Target_Number: 2 Target_Name: NGC3690-B1 Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA-OFF = +1.00S +/- 0.05S, ! DEC-OFF = +0.1" +/- 0.1", ! RA=0H 0M 0.00S +/- 0S, FROM 1 ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 16.9 +/- 0.3 B-V = 0.3 +/- 0.1 E(B-V) = 0.22 +/- 0.02 F(2000) = 1.6 +/- 0.3 E-15 ! Include at least V and B-V Comments: Target_Number: 3 Target_Name: NGC3690-B2 Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA-OFF = +0.89S +/- 0.05S, ! DEC-OFF = +2.7" +/- 0.1", ! RA=0H 0M 0.00S +/- 0S, FROM 1 ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 16.9 +/- 0.3 B-V = 0.3 +/- 0.1 E(B-V) = 0.22 +/- 0.02 F(2000) = 1.6 +/- 0.3 E-15 ! Include at least V and B-V Comments: Target_Number: 4 Target_Name: NGC3690-B3 Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA-OFF = +0.97S +/- 0.05S, ! DEC-OFF = +4.6" +/- 0.1", ! RA=0H 0M 0.00S +/- 0S, FROM 1 ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 16.7 +/- 0.3 B-V = 0.3 +/- 0.1 E(B-V) = 0.22 +/- 0.02 F(2000) = 1.6 +/- 0.3 E-15 ! Include at least V and B-V Comments: Target_Number: 5 Target_Name: NGC3690-C1 Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA-OFF = +0.73S +/- 0.05S, ! DEC-OFF = +8.6" +/- 0.1", ! RA=0H 0M 0.00S +/- 0S, FROM 1 ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 17.9 +/- 0.3 B-V = 0.2 +/- 0.1 E(B-V) = 0.24 +/- 0.02 F(2000) = 1.0 +/- 0.2 E-15 ! Include at least V and B-V Comments: Target_Number: 6 Target_Name: NGC3690-A Alternate_Names: ARP299 Description: GALAXY, INTERACTING GALAXY, STARBURST Position: RA-OFF = +3.29S +/- 0.05S, ! DEC-OFF = +2.9" +/- 0.1", ! RA=0H 0M 0.00S +/- 0S, FROM 1 ! DEC=0D 0' 0.0" +/- 0", ! PLATE-ID=0000 Equinox: 2000 RV_or_Z: V = +3150 RA_PM: ! Units are seconds of time per year Dec_PM: ! Units are seconds of arc per year Epoch: Annual_Parallax: Flux: V = 17.2 +/- 0.3 B-V = 0.3 +/- 0.1 E(B-V) = 0.42 +/- 0.02 F(2000) = 0.6 +/- 0.1 E-15 ! Include at least V and B-V Comments: ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits ! Section 6 Visit_Number: 1 Visit_Requirements: CVZ ! Section 7.1 ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling ! PCS MODE [Fine | Gyro] ! GUIDing TOLerance ! ORIENTation TO ! ORIENTation TO FROM ! ORIENTation TO FROM NOMINAL ! SAME ORIENTation AS ! CVZ ! PARallel ! AFTER [BY [TO ]] ! AFTER ! BEFORE ! BETWEEN AND ! GROUP WITHIN