Cycle 11 Proposal Submission Statistics

Joint ALMA Observatory
May 16, 2024

Number of submitted proposals and time requested
Time requested (hours)
Number ofproposals

12-m

7-m

Total PowerAll proposals

1712

31,61012,9958928

ACA standalone

87-47702437

Large Programs

4247132152

1337

Time requested by region
All

Chile

East Asia

EuropeNorth
America

12-m Array time (hours)

31,6102346

6647

11,9469752

919

Offered

4300

430

968

1451

1451

see note

Subscription

7.4

5.5

6.9

8.2

6.7

N/A

7-m Array time (hours)

12,9951160

3261

49123503

158

Total Power Array time (hours)

8928

564

3136

2489

2585

154

OtherNote: All regions contribute observing time for proposals from PIs who are not affiliated with any of the ALMA regions.

Joint Proposals

PartnerObservatory

Number of proposals*Time requested on
Partner Observatory

JWST

50312 hVLA

14136 h

VLT

520 h

*67 Joint Proposals submitted in Cycle 11, as 2 proposals requested time on 2 or more partner observatories.

Requested 12-m Array Time per Proposal**Excluding Large Programs

Requested 12-m Array Time by Science Category**Excluding Large Programs

Percentage of proposals by region* and category: all arrays* Percentages by region correspond to the regional affiliation of the Principal Investigator (PI) and co-PIs.

Number of proposals by region, category, and band: 12-m Array• Results are for the 1625 proposals requesting the 12-m Array.
• Percentages by receiver band sum to greater than 100% since some proposals request more than one receiver band.

Requested time by region, category, and band: 12-m ArrayNumber of proposals by region, category, and band: 7-m Array• Results are for the 354 proposals requesting the 7-m Array.
• Percentages by receiver band sum to greater than 100% since some proposals request more than one receiver band.

Requested time by region, category, and band: 7-m ArrayNumber of proposals by region, category, and band: Total Power Array• Results are for the 129 proposals requesting the Total Power Array.
• Percentages by receiver band sum to greater than 100% since some proposals request more than one receiver band.

Requested time by region, category, and band: Total Power ArrayPercentage of Large Programs by region* and category: all arrays* Percentages by region correspond to the regional affiliation of the Principal Investigator (PI) and co-PIs.

Requested time for Large Programs: 12-m ArrayRequested time for Large Programs: 7-m ArrayRequested time for Large Programs: Total Power ArrayNumber of submitted proposals by Cycle

Number of submitted Large Programs by CycleDistribution of time requests on 12-m Array by Cycle• Each box plot shows:- median (horizontal line)- 25-75% distribution (box)- 5-95% distribution (whiskers)• Large Programs and standalone
ACA proposals are excluded.

Time requested by Cycle• Continued increase in the amountof requested time on the 12-mArray• Decrease in the amount ofrequested time on the 7-m andTotal Power Arrays- number of proposals isroughly the same in previous
cycles (see next slide)- main cause is reduced
number of proposals request
very large amounts of time

Number of 7-m and Total Power Proposals by Cycle
7-m Array

Total Power Array

Oversubscription rate on 12-m Array by Cycle